./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.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/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/protection/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 19:29:50,892 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 19:29:50,949 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 19:29:50,952 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 19:29:50,952 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 19:29:50,977 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 19:29:50,977 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 19:29:50,978 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 19:29:50,978 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 19:29:50,978 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 19:29:50,979 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 19:29:50,979 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 19:29:50,979 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 19:29:50,980 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 19:29:50,980 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 19:29:50,980 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 19:29:50,980 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 19:29:50,981 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 19:29:50,981 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 19:29:50,981 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 19:29:50,982 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 19:29:50,982 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 19:29:50,982 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 19:29:50,983 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 19:29:50,992 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 19:29:50,992 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 19:29:50,993 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 19:29:50,993 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 19:29:50,993 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 19:29:50,993 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 19:29:50,994 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 19:29:50,994 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 19:29:50,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:29:50,994 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 19:29:50,995 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 19:29:50,995 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 19:29:50,995 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 19:29:50,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 19:29:50,996 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 19:29:50,996 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 19:29:50,997 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 19:29:50,997 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 19:29:50,997 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 19:29:50,997 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 19:29:51,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 19:29:51,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 19:29:51,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 19:29:51,190 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 19:29:51,190 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 19:29:51,191 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-27 19:29:51,328 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 19:29:51,329 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 19:29:51,330 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-27 19:29:52,339 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 19:29:52,533 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 19:29:52,533 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-27 19:29:52,542 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/039496e52/1d05d06f572b43fdadef4c4c5e91a72d/FLAGc6557d437 [2024-06-27 19:29:52,554 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/039496e52/1d05d06f572b43fdadef4c4c5e91a72d [2024-06-27 19:29:52,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 19:29:52,558 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 19:29:52,559 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 19:29:52,559 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 19:29:52,563 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 19:29:52,563 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:29:51" (1/2) ... [2024-06-27 19:29:52,564 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66efd896 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:29:52, skipping insertion in model container [2024-06-27 19:29:52,564 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:29:51" (1/2) ... [2024-06-27 19:29:52,565 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3eef47a8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:29:52, skipping insertion in model container [2024-06-27 19:29:52,565 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:29:52" (2/2) ... [2024-06-27 19:29:52,566 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66efd896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:29:52, skipping insertion in model container [2024-06-27 19:29:52,566 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:29:52" (2/2) ... [2024-06-27 19:29:52,566 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 19:29:52,591 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 19:29:52,591 INFO L97 edCorrectnessWitness]: Location invariant before [L780-L780] ((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (x == 0 || x == 1)) [2024-06-27 19:29:52,592 INFO L97 edCorrectnessWitness]: Location invariant before [L778-L778] ((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (x == 0 || x == 1)) [2024-06-27 19:29:52,592 INFO L97 edCorrectnessWitness]: Location invariant before [L781-L781] ((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (x == 0 || x == 1)) [2024-06-27 19:29:52,592 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 19:29:52,592 INFO L106 edCorrectnessWitness]: ghost_update [L776-L776] multithreaded = 1; [2024-06-27 19:29:52,615 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 19:29:52,887 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:29:52,915 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 19:29:53,014 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:29:53,041 INFO L206 MainTranslator]: Completed translation [2024-06-27 19:29:53,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:29:53 WrapperNode [2024-06-27 19:29:53,041 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 19:29:53,043 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 19:29:53,043 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 19:29:53,043 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 19:29:53,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:29:53" (1/1) ... [2024-06-27 19:29:53,064 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:29:53" (1/1) ... [2024-06-27 19:29:53,079 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 65 [2024-06-27 19:29:53,079 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 19:29:53,080 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 19:29:53,080 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 19:29:53,080 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 19:29:53,087 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:29:53" (1/1) ... [2024-06-27 19:29:53,087 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:29:53" (1/1) ... [2024-06-27 19:29:53,089 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:29:53" (1/1) ... [2024-06-27 19:29:53,097 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 19:29:53,098 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:29:53" (1/1) ... [2024-06-27 19:29:53,098 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:29:53" (1/1) ... [2024-06-27 19:29:53,101 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:29:53" (1/1) ... [2024-06-27 19:29:53,102 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:29:53" (1/1) ... [2024-06-27 19:29:53,103 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:29:53" (1/1) ... [2024-06-27 19:29:53,104 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:29:53" (1/1) ... [2024-06-27 19:29:53,106 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 19:29:53,106 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 19:29:53,106 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 19:29:53,106 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 19:29:53,107 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:29:53" (1/1) ... [2024-06-27 19:29:53,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:29:53,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 19:29:53,130 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 19:29:53,137 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 19:29:53,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 19:29:53,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 19:29:53,158 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 19:29:53,158 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 19:29:53,158 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 19:29:53,158 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 19:29:53,158 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 19:29:53,158 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 19:29:53,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 19:29:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 19:29:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 19:29:53,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 19:29:53,160 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 19:29:53,283 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 19:29:53,285 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 19:29:53,486 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 19:29:53,486 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 19:29:53,537 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 19:29:53,537 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 19:29:53,537 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:29:53 BoogieIcfgContainer [2024-06-27 19:29:53,537 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 19:29:53,539 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 19:29:53,539 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 19:29:53,541 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 19:29:53,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:29:51" (1/4) ... [2024-06-27 19:29:53,541 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbfce38 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:29:53, skipping insertion in model container [2024-06-27 19:29:53,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 07:29:52" (2/4) ... [2024-06-27 19:29:53,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbfce38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:29:53, skipping insertion in model container [2024-06-27 19:29:53,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:29:53" (3/4) ... [2024-06-27 19:29:53,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbfce38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:29:53, skipping insertion in model container [2024-06-27 19:29:53,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:29:53" (4/4) ... [2024-06-27 19:29:53,543 INFO L112 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-27 19:29:53,556 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 19:29:53,556 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-27 19:29:53,556 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 19:29:53,580 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 19:29:53,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 40 transitions, 92 flow [2024-06-27 19:29:53,634 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2024-06-27 19:29:53,635 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:29:53,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 37 events. 0/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 19:29:53,636 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 40 transitions, 92 flow [2024-06-27 19:29:53,640 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 71 flow [2024-06-27 19:29:53,651 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 19:29:53,659 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;@76f16b66, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 19:29:53,659 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-27 19:29:53,664 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 19:29:53,665 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 19:29:53,665 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:29:53,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:29:53,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 19:29:53,666 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:29:53,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:29:53,669 INFO L85 PathProgramCache]: Analyzing trace with hash 217843597, now seen corresponding path program 1 times [2024-06-27 19:29:53,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:29:53,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467338667] [2024-06-27 19:29:53,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:29:53,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:29:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:29:54,009 INFO 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 19:29:54,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:29:54,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467338667] [2024-06-27 19:29:54,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467338667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:29:54,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:29:54,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 19:29:54,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102308799] [2024-06-27 19:29:54,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:29:54,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:29:54,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:29:54,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:29:54,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:29:54,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 40 [2024-06-27 19:29:54,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:54,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:29:54,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 40 [2024-06-27 19:29:54,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:29:54,164 INFO L124 PetriNetUnfolderBase]: 471/816 cut-off events. [2024-06-27 19:29:54,164 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-06-27 19:29:54,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1604 conditions, 816 events. 471/816 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4041 event pairs, 288 based on Foata normal form. 1/772 useless extension candidates. Maximal degree in co-relation 1592. Up to 733 conditions per place. [2024-06-27 19:29:54,171 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 27 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2024-06-27 19:29:54,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 159 flow [2024-06-27 19:29:54,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:29:54,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:29:54,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-06-27 19:29:54,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2024-06-27 19:29:54,183 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 3 states and 85 transitions. [2024-06-27 19:29:54,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 159 flow [2024-06-27 19:29:54,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 41 transitions, 154 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 19:29:54,186 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 98 flow [2024-06-27 19:29:54,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2024-06-27 19:29:54,190 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 0 predicate places. [2024-06-27 19:29:54,190 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 98 flow [2024-06-27 19:29:54,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:54,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:29:54,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:29:54,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 19:29:54,191 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:29:54,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:29:54,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1105673172, now seen corresponding path program 1 times [2024-06-27 19:29:54,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:29:54,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386696566] [2024-06-27 19:29:54,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:29:54,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:29:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:29:54,269 INFO 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 19:29:54,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:29:54,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386696566] [2024-06-27 19:29:54,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386696566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:29:54,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:29:54,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 19:29:54,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800939268] [2024-06-27 19:29:54,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:29:54,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 19:29:54,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:29:54,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 19:29:54,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 19:29:54,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 40 [2024-06-27 19:29:54,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 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 19:29:54,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:29:54,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 40 [2024-06-27 19:29:54,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:29:54,488 INFO L124 PetriNetUnfolderBase]: 472/820 cut-off events. [2024-06-27 19:29:54,488 INFO L125 PetriNetUnfolderBase]: For 164/172 co-relation queries the response was YES. [2024-06-27 19:29:54,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1876 conditions, 820 events. 472/820 cut-off events. For 164/172 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4030 event pairs, 232 based on Foata normal form. 7/809 useless extension candidates. Maximal degree in co-relation 1864. Up to 707 conditions per place. [2024-06-27 19:29:54,494 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 36 selfloop transitions, 11 changer transitions 0/57 dead transitions. [2024-06-27 19:29:54,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 256 flow [2024-06-27 19:29:54,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:29:54,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:29:54,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-06-27 19:29:54,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.725 [2024-06-27 19:29:54,499 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 98 flow. Second operand 4 states and 116 transitions. [2024-06-27 19:29:54,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 256 flow [2024-06-27 19:29:54,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 57 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 19:29:54,502 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 170 flow [2024-06-27 19:29:54,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2024-06-27 19:29:54,502 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-06-27 19:29:54,503 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 170 flow [2024-06-27 19:29:54,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 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 19:29:54,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:29:54,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:29:54,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 19:29:54,506 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:29:54,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:29:54,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1589893622, now seen corresponding path program 1 times [2024-06-27 19:29:54,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:29:54,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941968238] [2024-06-27 19:29:54,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:29:54,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:29:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:29:54,629 INFO 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 19:29:54,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:29:54,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941968238] [2024-06-27 19:29:54,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941968238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:29:54,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:29:54,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 19:29:54,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141566921] [2024-06-27 19:29:54,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:29:54,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 19:29:54,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:29:54,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 19:29:54,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 19:29:54,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:29:54,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 170 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:54,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:29:54,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:29:54,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:29:54,776 INFO L124 PetriNetUnfolderBase]: 728/1202 cut-off events. [2024-06-27 19:29:54,776 INFO L125 PetriNetUnfolderBase]: For 812/812 co-relation queries the response was YES. [2024-06-27 19:29:54,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3278 conditions, 1202 events. 728/1202 cut-off events. For 812/812 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5880 event pairs, 392 based on Foata normal form. 2/1203 useless extension candidates. Maximal degree in co-relation 3263. Up to 1104 conditions per place. [2024-06-27 19:29:54,784 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 44 selfloop transitions, 7 changer transitions 0/59 dead transitions. [2024-06-27 19:29:54,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 59 transitions, 327 flow [2024-06-27 19:29:54,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:29:54,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:29:54,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-06-27 19:29:54,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6375 [2024-06-27 19:29:54,788 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 170 flow. Second operand 4 states and 102 transitions. [2024-06-27 19:29:54,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 59 transitions, 327 flow [2024-06-27 19:29:54,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 59 transitions, 323 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 19:29:54,791 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 229 flow [2024-06-27 19:29:54,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=229, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2024-06-27 19:29:54,792 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-06-27 19:29:54,792 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 229 flow [2024-06-27 19:29:54,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:54,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:29:54,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:29:54,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 19:29:54,794 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:29:54,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:29:54,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1070247574, now seen corresponding path program 1 times [2024-06-27 19:29:54,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:29:54,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205934589] [2024-06-27 19:29:54,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:29:54,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:29:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:29:54,932 INFO 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 19:29:54,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:29:54,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205934589] [2024-06-27 19:29:54,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205934589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:29:54,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:29:54,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:29:54,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584015725] [2024-06-27 19:29:54,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:29:54,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:29:54,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:29:54,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:29:54,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:29:55,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-06-27 19:29:55,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 229 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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 19:29:55,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:29:55,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-06-27 19:29:55,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:29:55,207 INFO L124 PetriNetUnfolderBase]: 722/1212 cut-off events. [2024-06-27 19:29:55,207 INFO L125 PetriNetUnfolderBase]: For 1438/1450 co-relation queries the response was YES. [2024-06-27 19:29:55,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3635 conditions, 1212 events. 722/1212 cut-off events. For 1438/1450 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6019 event pairs, 189 based on Foata normal form. 20/1220 useless extension candidates. Maximal degree in co-relation 3616. Up to 978 conditions per place. [2024-06-27 19:29:55,213 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 54 selfloop transitions, 19 changer transitions 0/84 dead transitions. [2024-06-27 19:29:55,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 84 transitions, 485 flow [2024-06-27 19:29:55,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:29:55,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:29:55,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2024-06-27 19:29:55,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6916666666666667 [2024-06-27 19:29:55,214 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 229 flow. Second operand 6 states and 166 transitions. [2024-06-27 19:29:55,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 84 transitions, 485 flow [2024-06-27 19:29:55,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 84 transitions, 481 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 19:29:55,217 INFO L231 Difference]: Finished difference. Result has 56 places, 53 transitions, 308 flow [2024-06-27 19:29:55,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=308, PETRI_PLACES=56, PETRI_TRANSITIONS=53} [2024-06-27 19:29:55,218 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 15 predicate places. [2024-06-27 19:29:55,218 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 53 transitions, 308 flow [2024-06-27 19:29:55,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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 19:29:55,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:29:55,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:29:55,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 19:29:55,219 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:29:55,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:29:55,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1113959529, now seen corresponding path program 1 times [2024-06-27 19:29:55,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:29:55,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470032165] [2024-06-27 19:29:55,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:29:55,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:29:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:29:55,291 INFO 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 19:29:55,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:29:55,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470032165] [2024-06-27 19:29:55,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470032165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:29:55,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:29:55,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:29:55,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268064176] [2024-06-27 19:29:55,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:29:55,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 19:29:55,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:29:55,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 19:29:55,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 19:29:55,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:29:55,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:55,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:29:55,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:29:55,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:29:55,438 INFO L124 PetriNetUnfolderBase]: 763/1270 cut-off events. [2024-06-27 19:29:55,438 INFO L125 PetriNetUnfolderBase]: For 2183/2183 co-relation queries the response was YES. [2024-06-27 19:29:55,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4232 conditions, 1270 events. 763/1270 cut-off events. For 2183/2183 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6270 event pairs, 266 based on Foata normal form. 2/1270 useless extension candidates. Maximal degree in co-relation 4209. Up to 1125 conditions per place. [2024-06-27 19:29:55,445 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 59 selfloop transitions, 14 changer transitions 0/81 dead transitions. [2024-06-27 19:29:55,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 557 flow [2024-06-27 19:29:55,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:29:55,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:29:55,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-06-27 19:29:55,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-06-27 19:29:55,446 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 308 flow. Second operand 5 states and 130 transitions. [2024-06-27 19:29:55,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 557 flow [2024-06-27 19:29:55,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 81 transitions, 517 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 19:29:55,449 INFO L231 Difference]: Finished difference. Result has 59 places, 61 transitions, 358 flow [2024-06-27 19:29:55,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=358, PETRI_PLACES=59, PETRI_TRANSITIONS=61} [2024-06-27 19:29:55,450 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2024-06-27 19:29:55,450 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 358 flow [2024-06-27 19:29:55,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:55,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:29:55,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:29:55,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 19:29:55,451 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:29:55,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:29:55,451 INFO L85 PathProgramCache]: Analyzing trace with hash -2115271477, now seen corresponding path program 2 times [2024-06-27 19:29:55,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:29:55,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874326282] [2024-06-27 19:29:55,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:29:55,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:29:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:29:55,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:29:55,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:29:55,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874326282] [2024-06-27 19:29:55,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874326282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:29:55,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:29:55,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:29:55,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376145625] [2024-06-27 19:29:55,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:29:55,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 19:29:55,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:29:55,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 19:29:55,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 19:29:55,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:29:55,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 358 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:55,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:29:55,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:29:55,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:29:55,634 INFO L124 PetriNetUnfolderBase]: 758/1261 cut-off events. [2024-06-27 19:29:55,635 INFO L125 PetriNetUnfolderBase]: For 2825/2825 co-relation queries the response was YES. [2024-06-27 19:29:55,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4445 conditions, 1261 events. 758/1261 cut-off events. For 2825/2825 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6199 event pairs, 269 based on Foata normal form. 2/1261 useless extension candidates. Maximal degree in co-relation 4420. Up to 1120 conditions per place. [2024-06-27 19:29:55,643 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 54 selfloop transitions, 15 changer transitions 0/77 dead transitions. [2024-06-27 19:29:55,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 77 transitions, 541 flow [2024-06-27 19:29:55,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:29:55,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:29:55,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-27 19:29:55,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-27 19:29:55,644 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 358 flow. Second operand 5 states and 125 transitions. [2024-06-27 19:29:55,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 77 transitions, 541 flow [2024-06-27 19:29:55,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 77 transitions, 515 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-27 19:29:55,647 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 377 flow [2024-06-27 19:29:55,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=377, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2024-06-27 19:29:55,648 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2024-06-27 19:29:55,648 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 377 flow [2024-06-27 19:29:55,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:55,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:29:55,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:29:55,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 19:29:55,649 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:29:55,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:29:55,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1120634697, now seen corresponding path program 1 times [2024-06-27 19:29:55,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:29:55,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733413301] [2024-06-27 19:29:55,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:29:55,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:29:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:29:55,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:29:55,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:29:55,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733413301] [2024-06-27 19:29:55,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733413301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:29:55,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:29:55,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:29:55,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043852818] [2024-06-27 19:29:55,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:29:55,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 19:29:55,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:29:55,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 19:29:55,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 19:29:55,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:29:55,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 377 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:55,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:29:55,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:29:55,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:29:55,884 INFO L124 PetriNetUnfolderBase]: 750/1254 cut-off events. [2024-06-27 19:29:55,884 INFO L125 PetriNetUnfolderBase]: For 3254/3254 co-relation queries the response was YES. [2024-06-27 19:29:55,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4472 conditions, 1254 events. 750/1254 cut-off events. For 3254/3254 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6144 event pairs, 246 based on Foata normal form. 4/1257 useless extension candidates. Maximal degree in co-relation 4446. Up to 1123 conditions per place. [2024-06-27 19:29:55,892 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 63 selfloop transitions, 9 changer transitions 0/80 dead transitions. [2024-06-27 19:29:55,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 80 transitions, 573 flow [2024-06-27 19:29:55,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:29:55,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:29:55,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-27 19:29:55,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.615 [2024-06-27 19:29:55,893 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 377 flow. Second operand 5 states and 123 transitions. [2024-06-27 19:29:55,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 80 transitions, 573 flow [2024-06-27 19:29:55,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 80 transitions, 551 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 19:29:55,897 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 396 flow [2024-06-27 19:29:55,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=396, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2024-06-27 19:29:55,898 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 24 predicate places. [2024-06-27 19:29:55,898 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 396 flow [2024-06-27 19:29:55,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:55,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:29:55,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:29:55,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 19:29:55,899 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:29:55,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:29:55,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1063530184, now seen corresponding path program 1 times [2024-06-27 19:29:55,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:29:55,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905020708] [2024-06-27 19:29:55,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:29:55,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:29:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:29:56,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:29:56,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:29:56,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905020708] [2024-06-27 19:29:56,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905020708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:29:56,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:29:56,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:29:56,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380448128] [2024-06-27 19:29:56,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:29:56,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:29:56,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:29:56,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:29:56,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:29:56,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:29:56,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 396 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:56,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:29:56,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:29:56,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:29:56,216 INFO L124 PetriNetUnfolderBase]: 773/1297 cut-off events. [2024-06-27 19:29:56,217 INFO L125 PetriNetUnfolderBase]: For 4190/4190 co-relation queries the response was YES. [2024-06-27 19:29:56,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4770 conditions, 1297 events. 773/1297 cut-off events. For 4190/4190 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6526 event pairs, 216 based on Foata normal form. 4/1298 useless extension candidates. Maximal degree in co-relation 4742. Up to 1101 conditions per place. [2024-06-27 19:29:56,224 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 65 selfloop transitions, 24 changer transitions 0/97 dead transitions. [2024-06-27 19:29:56,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 97 transitions, 694 flow [2024-06-27 19:29:56,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:29:56,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:29:56,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2024-06-27 19:29:56,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-06-27 19:29:56,227 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 396 flow. Second operand 6 states and 162 transitions. [2024-06-27 19:29:56,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 97 transitions, 694 flow [2024-06-27 19:29:56,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 97 transitions, 671 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 19:29:56,233 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 469 flow [2024-06-27 19:29:56,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=469, PETRI_PLACES=68, PETRI_TRANSITIONS=69} [2024-06-27 19:29:56,235 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 27 predicate places. [2024-06-27 19:29:56,235 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 469 flow [2024-06-27 19:29:56,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:56,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:29:56,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:29:56,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 19:29:56,236 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:29:56,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:29:56,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1068291784, now seen corresponding path program 2 times [2024-06-27 19:29:56,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:29:56,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105598400] [2024-06-27 19:29:56,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:29:56,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:29:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:29:56,331 INFO 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 19:29:56,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:29:56,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105598400] [2024-06-27 19:29:56,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105598400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:29:56,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:29:56,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:29:56,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139595198] [2024-06-27 19:29:56,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:29:56,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:29:56,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:29:56,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:29:56,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:29:56,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:29:56,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 469 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:56,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:29:56,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:29:56,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:29:56,491 INFO L124 PetriNetUnfolderBase]: 784/1325 cut-off events. [2024-06-27 19:29:56,491 INFO L125 PetriNetUnfolderBase]: For 4939/4939 co-relation queries the response was YES. [2024-06-27 19:29:56,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5317 conditions, 1325 events. 784/1325 cut-off events. For 4939/4939 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6680 event pairs, 243 based on Foata normal form. 2/1325 useless extension candidates. Maximal degree in co-relation 5288. Up to 1113 conditions per place. [2024-06-27 19:29:56,498 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 71 selfloop transitions, 24 changer transitions 0/103 dead transitions. [2024-06-27 19:29:56,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 103 transitions, 828 flow [2024-06-27 19:29:56,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:29:56,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:29:56,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-27 19:29:56,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6416666666666667 [2024-06-27 19:29:56,499 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 469 flow. Second operand 6 states and 154 transitions. [2024-06-27 19:29:56,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 103 transitions, 828 flow [2024-06-27 19:29:56,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 103 transitions, 757 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 19:29:56,505 INFO L231 Difference]: Finished difference. Result has 72 places, 79 transitions, 564 flow [2024-06-27 19:29:56,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=564, PETRI_PLACES=72, PETRI_TRANSITIONS=79} [2024-06-27 19:29:56,505 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 31 predicate places. [2024-06-27 19:29:56,505 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 79 transitions, 564 flow [2024-06-27 19:29:56,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:56,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:29:56,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:29:56,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 19:29:56,506 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:29:56,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:29:56,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1068298728, now seen corresponding path program 1 times [2024-06-27 19:29:56,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:29:56,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320843697] [2024-06-27 19:29:56,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:29:56,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:29:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:29:56,574 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 19:29:56,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:29:56,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320843697] [2024-06-27 19:29:56,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320843697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:29:56,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:29:56,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:29:56,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695647271] [2024-06-27 19:29:56,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:29:56,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:29:56,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:29:56,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:29:56,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:29:56,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:29:56,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 79 transitions, 564 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:56,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:29:56,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:29:56,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:29:56,727 INFO L124 PetriNetUnfolderBase]: 801/1350 cut-off events. [2024-06-27 19:29:56,727 INFO L125 PetriNetUnfolderBase]: For 6350/6350 co-relation queries the response was YES. [2024-06-27 19:29:56,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5728 conditions, 1350 events. 801/1350 cut-off events. For 6350/6350 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6767 event pairs, 239 based on Foata normal form. 4/1352 useless extension candidates. Maximal degree in co-relation 5696. Up to 1166 conditions per place. [2024-06-27 19:29:56,735 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 79 selfloop transitions, 17 changer transitions 0/104 dead transitions. [2024-06-27 19:29:56,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 104 transitions, 830 flow [2024-06-27 19:29:56,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:29:56,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:29:56,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-27 19:29:56,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-27 19:29:56,736 INFO L175 Difference]: Start difference. First operand has 72 places, 79 transitions, 564 flow. Second operand 6 states and 150 transitions. [2024-06-27 19:29:56,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 104 transitions, 830 flow [2024-06-27 19:29:56,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 104 transitions, 808 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-27 19:29:56,743 INFO L231 Difference]: Finished difference. Result has 77 places, 81 transitions, 603 flow [2024-06-27 19:29:56,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=603, PETRI_PLACES=77, PETRI_TRANSITIONS=81} [2024-06-27 19:29:56,743 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 36 predicate places. [2024-06-27 19:29:56,743 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 81 transitions, 603 flow [2024-06-27 19:29:56,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:56,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:29:56,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:29:56,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 19:29:56,744 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:29:56,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:29:56,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1256317270, now seen corresponding path program 3 times [2024-06-27 19:29:56,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:29:56,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662537915] [2024-06-27 19:29:56,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:29:56,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:29:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:29:56,802 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 19:29:56,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:29:56,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662537915] [2024-06-27 19:29:56,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662537915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:29:56,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:29:56,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:29:56,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812855813] [2024-06-27 19:29:56,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:29:56,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:29:56,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:29:56,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:29:56,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:29:56,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:29:56,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 81 transitions, 603 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:56,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:29:56,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:29:56,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:29:56,947 INFO L124 PetriNetUnfolderBase]: 796/1336 cut-off events. [2024-06-27 19:29:56,947 INFO L125 PetriNetUnfolderBase]: For 7305/7305 co-relation queries the response was YES. [2024-06-27 19:29:56,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5914 conditions, 1336 events. 796/1336 cut-off events. For 7305/7305 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6673 event pairs, 251 based on Foata normal form. 2/1335 useless extension candidates. Maximal degree in co-relation 5880. Up to 1135 conditions per place. [2024-06-27 19:29:56,977 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 68 selfloop transitions, 25 changer transitions 0/101 dead transitions. [2024-06-27 19:29:56,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 101 transitions, 848 flow [2024-06-27 19:29:56,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:29:56,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:29:56,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-27 19:29:56,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6208333333333333 [2024-06-27 19:29:56,979 INFO L175 Difference]: Start difference. First operand has 77 places, 81 transitions, 603 flow. Second operand 6 states and 149 transitions. [2024-06-27 19:29:56,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 101 transitions, 848 flow [2024-06-27 19:29:56,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 101 transitions, 791 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-27 19:29:56,986 INFO L231 Difference]: Finished difference. Result has 79 places, 82 transitions, 615 flow [2024-06-27 19:29:56,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=615, PETRI_PLACES=79, PETRI_TRANSITIONS=82} [2024-06-27 19:29:56,987 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 38 predicate places. [2024-06-27 19:29:56,987 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 82 transitions, 615 flow [2024-06-27 19:29:56,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:56,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:29:56,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:29:56,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 19:29:56,987 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:29:56,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:29:56,988 INFO L85 PathProgramCache]: Analyzing trace with hash 4905016, now seen corresponding path program 2 times [2024-06-27 19:29:56,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:29:56,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463234720] [2024-06-27 19:29:56,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:29:56,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:29:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:29:57,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:29:57,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:29:57,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463234720] [2024-06-27 19:29:57,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463234720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:29:57,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:29:57,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:29:57,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530893322] [2024-06-27 19:29:57,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:29:57,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:29:57,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:29:57,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:29:57,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:29:57,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:29:57,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 82 transitions, 615 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:57,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:29:57,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:29:57,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:29:57,240 INFO L124 PetriNetUnfolderBase]: 813/1378 cut-off events. [2024-06-27 19:29:57,240 INFO L125 PetriNetUnfolderBase]: For 8392/8392 co-relation queries the response was YES. [2024-06-27 19:29:57,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6112 conditions, 1378 events. 813/1378 cut-off events. For 8392/8392 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6960 event pairs, 249 based on Foata normal form. 4/1380 useless extension candidates. Maximal degree in co-relation 6077. Up to 1186 conditions per place. [2024-06-27 19:29:57,252 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 79 selfloop transitions, 17 changer transitions 0/104 dead transitions. [2024-06-27 19:29:57,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 104 transitions, 877 flow [2024-06-27 19:29:57,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:29:57,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:29:57,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-27 19:29:57,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6125 [2024-06-27 19:29:57,253 INFO L175 Difference]: Start difference. First operand has 79 places, 82 transitions, 615 flow. Second operand 6 states and 147 transitions. [2024-06-27 19:29:57,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 104 transitions, 877 flow [2024-06-27 19:29:57,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 104 transitions, 833 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 19:29:57,261 INFO L231 Difference]: Finished difference. Result has 82 places, 84 transitions, 636 flow [2024-06-27 19:29:57,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=636, PETRI_PLACES=82, PETRI_TRANSITIONS=84} [2024-06-27 19:29:57,261 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 41 predicate places. [2024-06-27 19:29:57,262 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 84 transitions, 636 flow [2024-06-27 19:29:57,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:57,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:29:57,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:29:57,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 19:29:57,262 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:29:57,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:29:57,263 INFO L85 PathProgramCache]: Analyzing trace with hash 5144026, now seen corresponding path program 3 times [2024-06-27 19:29:57,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:29:57,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693390232] [2024-06-27 19:29:57,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:29:57,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:29:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:29:57,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:29:57,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:29:57,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693390232] [2024-06-27 19:29:57,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693390232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:29:57,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:29:57,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:29:57,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863967382] [2024-06-27 19:29:57,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:29:57,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:29:57,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:29:57,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:29:57,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:29:57,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:29:57,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 84 transitions, 636 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:57,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:29:57,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:29:57,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:29:57,529 INFO L124 PetriNetUnfolderBase]: 805/1366 cut-off events. [2024-06-27 19:29:57,529 INFO L125 PetriNetUnfolderBase]: For 9531/9531 co-relation queries the response was YES. [2024-06-27 19:29:57,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6185 conditions, 1366 events. 805/1366 cut-off events. For 9531/9531 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6924 event pairs, 218 based on Foata normal form. 4/1368 useless extension candidates. Maximal degree in co-relation 6148. Up to 1115 conditions per place. [2024-06-27 19:29:57,536 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 77 selfloop transitions, 22 changer transitions 0/107 dead transitions. [2024-06-27 19:29:57,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 107 transitions, 910 flow [2024-06-27 19:29:57,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:29:57,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:29:57,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-27 19:29:57,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-06-27 19:29:57,536 INFO L175 Difference]: Start difference. First operand has 82 places, 84 transitions, 636 flow. Second operand 6 states and 148 transitions. [2024-06-27 19:29:57,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 107 transitions, 910 flow [2024-06-27 19:29:57,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 107 transitions, 863 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 19:29:57,544 INFO L231 Difference]: Finished difference. Result has 84 places, 86 transitions, 668 flow [2024-06-27 19:29:57,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=668, PETRI_PLACES=84, PETRI_TRANSITIONS=86} [2024-06-27 19:29:57,545 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 43 predicate places. [2024-06-27 19:29:57,545 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 86 transitions, 668 flow [2024-06-27 19:29:57,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:57,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:29:57,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:29:57,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 19:29:57,545 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:29:57,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:29:57,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1834330822, now seen corresponding path program 1 times [2024-06-27 19:29:57,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:29:57,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355372426] [2024-06-27 19:29:57,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:29:57,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:29:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:29:57,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:29:57,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:29:57,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355372426] [2024-06-27 19:29:57,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355372426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:29:57,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:29:57,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:29:57,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262744461] [2024-06-27 19:29:57,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:29:57,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 19:29:57,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:29:57,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 19:29:57,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 19:29:57,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-06-27 19:29:57,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 86 transitions, 668 flow. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:57,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:29:57,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-06-27 19:29:57,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:29:57,716 INFO L124 PetriNetUnfolderBase]: 727/1257 cut-off events. [2024-06-27 19:29:57,716 INFO L125 PetriNetUnfolderBase]: For 9946/9951 co-relation queries the response was YES. [2024-06-27 19:29:57,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5784 conditions, 1257 events. 727/1257 cut-off events. For 9946/9951 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6407 event pairs, 246 based on Foata normal form. 8/1261 useless extension candidates. Maximal degree in co-relation 5746. Up to 1045 conditions per place. [2024-06-27 19:29:57,723 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 60 selfloop transitions, 18 changer transitions 0/94 dead transitions. [2024-06-27 19:29:57,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 94 transitions, 844 flow [2024-06-27 19:29:57,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:29:57,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:29:57,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-06-27 19:29:57,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-06-27 19:29:57,724 INFO L175 Difference]: Start difference. First operand has 84 places, 86 transitions, 668 flow. Second operand 4 states and 104 transitions. [2024-06-27 19:29:57,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 94 transitions, 844 flow [2024-06-27 19:29:57,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 94 transitions, 783 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 19:29:57,733 INFO L231 Difference]: Finished difference. Result has 84 places, 86 transitions, 652 flow [2024-06-27 19:29:57,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=652, PETRI_PLACES=84, PETRI_TRANSITIONS=86} [2024-06-27 19:29:57,733 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 43 predicate places. [2024-06-27 19:29:57,733 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 86 transitions, 652 flow [2024-06-27 19:29:57,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:57,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:29:57,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:29:57,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 19:29:57,734 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:29:57,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:29:57,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1034448361, now seen corresponding path program 1 times [2024-06-27 19:29:57,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:29:57,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23729984] [2024-06-27 19:29:57,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:29:57,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:29:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:29:57,788 INFO 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 19:29:57,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:29:57,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23729984] [2024-06-27 19:29:57,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23729984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:29:57,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:29:57,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:29:57,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739691579] [2024-06-27 19:29:57,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:29:57,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 19:29:57,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:29:57,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 19:29:57,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 19:29:57,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:29:57,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 86 transitions, 652 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:57,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:29:57,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:29:57,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:29:57,944 INFO L124 PetriNetUnfolderBase]: 785/1330 cut-off events. [2024-06-27 19:29:57,945 INFO L125 PetriNetUnfolderBase]: For 10738/10738 co-relation queries the response was YES. [2024-06-27 19:29:57,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6193 conditions, 1330 events. 785/1330 cut-off events. For 10738/10738 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6634 event pairs, 235 based on Foata normal form. 1/1330 useless extension candidates. Maximal degree in co-relation 6154. Up to 1183 conditions per place. [2024-06-27 19:29:57,953 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 82 selfloop transitions, 15 changer transitions 0/105 dead transitions. [2024-06-27 19:29:57,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 105 transitions, 966 flow [2024-06-27 19:29:57,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:29:57,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:29:57,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-06-27 19:29:57,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.61 [2024-06-27 19:29:57,954 INFO L175 Difference]: Start difference. First operand has 84 places, 86 transitions, 652 flow. Second operand 5 states and 122 transitions. [2024-06-27 19:29:57,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 105 transitions, 966 flow [2024-06-27 19:29:57,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 105 transitions, 922 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 19:29:57,965 INFO L231 Difference]: Finished difference. Result has 86 places, 92 transitions, 710 flow [2024-06-27 19:29:57,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=710, PETRI_PLACES=86, PETRI_TRANSITIONS=92} [2024-06-27 19:29:57,965 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 45 predicate places. [2024-06-27 19:29:57,966 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 92 transitions, 710 flow [2024-06-27 19:29:57,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:57,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:29:57,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:29:57,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 19:29:57,966 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:29:57,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:29:57,966 INFO L85 PathProgramCache]: Analyzing trace with hash -428206471, now seen corresponding path program 2 times [2024-06-27 19:29:57,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:29:57,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401425676] [2024-06-27 19:29:57,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:29:57,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:29:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:29:58,030 INFO 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 19:29:58,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:29:58,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401425676] [2024-06-27 19:29:58,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401425676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:29:58,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:29:58,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:29:58,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780625329] [2024-06-27 19:29:58,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:29:58,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 19:29:58,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:29:58,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 19:29:58,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 19:29:58,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:29:58,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 92 transitions, 710 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:58,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:29:58,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:29:58,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:29:58,187 INFO L124 PetriNetUnfolderBase]: 782/1326 cut-off events. [2024-06-27 19:29:58,187 INFO L125 PetriNetUnfolderBase]: For 11978/11978 co-relation queries the response was YES. [2024-06-27 19:29:58,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6370 conditions, 1326 events. 782/1326 cut-off events. For 11978/11978 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6611 event pairs, 235 based on Foata normal form. 1/1326 useless extension candidates. Maximal degree in co-relation 6331. Up to 1183 conditions per place. [2024-06-27 19:29:58,194 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 83 selfloop transitions, 12 changer transitions 0/103 dead transitions. [2024-06-27 19:29:58,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 103 transitions, 928 flow [2024-06-27 19:29:58,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:29:58,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:29:58,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-06-27 19:29:58,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6375 [2024-06-27 19:29:58,195 INFO L175 Difference]: Start difference. First operand has 86 places, 92 transitions, 710 flow. Second operand 4 states and 102 transitions. [2024-06-27 19:29:58,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 103 transitions, 928 flow [2024-06-27 19:29:58,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 103 transitions, 882 flow, removed 20 selfloop flow, removed 1 redundant places. [2024-06-27 19:29:58,207 INFO L231 Difference]: Finished difference. Result has 89 places, 92 transitions, 698 flow [2024-06-27 19:29:58,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=698, PETRI_PLACES=89, PETRI_TRANSITIONS=92} [2024-06-27 19:29:58,207 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 48 predicate places. [2024-06-27 19:29:58,207 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 92 transitions, 698 flow [2024-06-27 19:29:58,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:58,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:29:58,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:29:58,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 19:29:58,208 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:29:58,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:29:58,208 INFO L85 PathProgramCache]: Analyzing trace with hash -152523481, now seen corresponding path program 1 times [2024-06-27 19:29:58,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:29:58,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162990235] [2024-06-27 19:29:58,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:29:58,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:29:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:29:58,289 INFO 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 19:29:58,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:29:58,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162990235] [2024-06-27 19:29:58,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162990235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:29:58,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:29:58,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:29:58,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808465283] [2024-06-27 19:29:58,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:29:58,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:29:58,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:29:58,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:29:58,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:29:58,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:29:58,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 92 transitions, 698 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:58,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:29:58,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:29:58,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:29:58,599 INFO L124 PetriNetUnfolderBase]: 1178/1992 cut-off events. [2024-06-27 19:29:58,599 INFO L125 PetriNetUnfolderBase]: For 26474/26474 co-relation queries the response was YES. [2024-06-27 19:29:58,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9638 conditions, 1992 events. 1178/1992 cut-off events. For 26474/26474 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10890 event pairs, 279 based on Foata normal form. 42/2031 useless extension candidates. Maximal degree in co-relation 9597. Up to 1089 conditions per place. [2024-06-27 19:29:58,644 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 101 selfloop transitions, 33 changer transitions 4/146 dead transitions. [2024-06-27 19:29:58,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 146 transitions, 1262 flow [2024-06-27 19:29:58,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:29:58,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:29:58,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 218 transitions. [2024-06-27 19:29:58,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.68125 [2024-06-27 19:29:58,645 INFO L175 Difference]: Start difference. First operand has 89 places, 92 transitions, 698 flow. Second operand 8 states and 218 transitions. [2024-06-27 19:29:58,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 146 transitions, 1262 flow [2024-06-27 19:29:58,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 146 transitions, 1238 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 19:29:58,661 INFO L231 Difference]: Finished difference. Result has 95 places, 97 transitions, 825 flow [2024-06-27 19:29:58,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=825, PETRI_PLACES=95, PETRI_TRANSITIONS=97} [2024-06-27 19:29:58,662 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 54 predicate places. [2024-06-27 19:29:58,662 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 97 transitions, 825 flow [2024-06-27 19:29:58,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:58,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:29:58,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:29:58,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 19:29:58,662 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:29:58,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:29:58,663 INFO L85 PathProgramCache]: Analyzing trace with hash -149666521, now seen corresponding path program 2 times [2024-06-27 19:29:58,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:29:58,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085974918] [2024-06-27 19:29:58,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:29:58,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:29:58,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:29:58,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:29:58,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:29:58,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085974918] [2024-06-27 19:29:58,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085974918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:29:58,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:29:58,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:29:58,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967751529] [2024-06-27 19:29:58,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:29:58,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:29:58,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:29:58,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:29:58,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:29:58,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:29:58,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 97 transitions, 825 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:58,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:29:58,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:29:58,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:29:58,978 INFO L124 PetriNetUnfolderBase]: 1051/1787 cut-off events. [2024-06-27 19:29:58,978 INFO L125 PetriNetUnfolderBase]: For 24175/24175 co-relation queries the response was YES. [2024-06-27 19:29:58,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8569 conditions, 1787 events. 1051/1787 cut-off events. For 24175/24175 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9575 event pairs, 332 based on Foata normal form. 50/1834 useless extension candidates. Maximal degree in co-relation 8526. Up to 1320 conditions per place. [2024-06-27 19:29:58,988 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 95 selfloop transitions, 28 changer transitions 3/134 dead transitions. [2024-06-27 19:29:58,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 134 transitions, 1214 flow [2024-06-27 19:29:58,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:29:58,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:29:58,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-27 19:29:58,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6678571428571428 [2024-06-27 19:29:58,989 INFO L175 Difference]: Start difference. First operand has 95 places, 97 transitions, 825 flow. Second operand 7 states and 187 transitions. [2024-06-27 19:29:58,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 134 transitions, 1214 flow [2024-06-27 19:29:59,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 134 transitions, 1144 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-27 19:29:59,010 INFO L231 Difference]: Finished difference. Result has 98 places, 97 transitions, 836 flow [2024-06-27 19:29:59,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=836, PETRI_PLACES=98, PETRI_TRANSITIONS=97} [2024-06-27 19:29:59,010 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 57 predicate places. [2024-06-27 19:29:59,010 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 97 transitions, 836 flow [2024-06-27 19:29:59,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:59,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:29:59,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:29:59,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 19:29:59,010 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:29:59,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:29:59,011 INFO L85 PathProgramCache]: Analyzing trace with hash -34375351, now seen corresponding path program 3 times [2024-06-27 19:29:59,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:29:59,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814761121] [2024-06-27 19:29:59,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:29:59,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:29:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:29:59,079 INFO 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 19:29:59,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:29:59,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814761121] [2024-06-27 19:29:59,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814761121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:29:59,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:29:59,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:29:59,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764866535] [2024-06-27 19:29:59,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:29:59,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:29:59,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:29:59,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:29:59,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:29:59,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:29:59,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 97 transitions, 836 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:59,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:29:59,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:29:59,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:29:59,314 INFO L124 PetriNetUnfolderBase]: 1099/1880 cut-off events. [2024-06-27 19:29:59,315 INFO L125 PetriNetUnfolderBase]: For 20984/20984 co-relation queries the response was YES. [2024-06-27 19:29:59,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8961 conditions, 1880 events. 1099/1880 cut-off events. For 20984/20984 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10210 event pairs, 349 based on Foata normal form. 16/1894 useless extension candidates. Maximal degree in co-relation 8916. Up to 1561 conditions per place. [2024-06-27 19:29:59,324 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 94 selfloop transitions, 26 changer transitions 0/128 dead transitions. [2024-06-27 19:29:59,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 128 transitions, 1184 flow [2024-06-27 19:29:59,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:29:59,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:29:59,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 19:29:59,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-06-27 19:29:59,325 INFO L175 Difference]: Start difference. First operand has 98 places, 97 transitions, 836 flow. Second operand 7 states and 176 transitions. [2024-06-27 19:29:59,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 128 transitions, 1184 flow [2024-06-27 19:29:59,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 128 transitions, 1132 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-27 19:29:59,345 INFO L231 Difference]: Finished difference. Result has 100 places, 98 transitions, 863 flow [2024-06-27 19:29:59,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=863, PETRI_PLACES=100, PETRI_TRANSITIONS=98} [2024-06-27 19:29:59,346 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 59 predicate places. [2024-06-27 19:29:59,346 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 98 transitions, 863 flow [2024-06-27 19:29:59,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:59,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:29:59,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:29:59,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 19:29:59,346 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:29:59,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:29:59,347 INFO L85 PathProgramCache]: Analyzing trace with hash 137934983, now seen corresponding path program 1 times [2024-06-27 19:29:59,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:29:59,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896663704] [2024-06-27 19:29:59,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:29:59,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:29:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:29:59,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:29:59,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:29:59,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896663704] [2024-06-27 19:29:59,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896663704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:29:59,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:29:59,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:29:59,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246190390] [2024-06-27 19:29:59,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:29:59,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:29:59,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:29:59,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:29:59,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:29:59,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:29:59,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 98 transitions, 863 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:59,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:29:59,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:29:59,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:29:59,640 INFO L124 PetriNetUnfolderBase]: 1140/1961 cut-off events. [2024-06-27 19:29:59,640 INFO L125 PetriNetUnfolderBase]: For 22870/22870 co-relation queries the response was YES. [2024-06-27 19:29:59,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9373 conditions, 1961 events. 1140/1961 cut-off events. For 22870/22870 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 10862 event pairs, 345 based on Foata normal form. 12/1971 useless extension candidates. Maximal degree in co-relation 9327. Up to 1453 conditions per place. [2024-06-27 19:29:59,650 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 95 selfloop transitions, 29 changer transitions 0/132 dead transitions. [2024-06-27 19:29:59,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 132 transitions, 1233 flow [2024-06-27 19:29:59,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:29:59,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:29:59,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-27 19:29:59,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6357142857142857 [2024-06-27 19:29:59,651 INFO L175 Difference]: Start difference. First operand has 100 places, 98 transitions, 863 flow. Second operand 7 states and 178 transitions. [2024-06-27 19:29:59,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 132 transitions, 1233 flow [2024-06-27 19:29:59,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 132 transitions, 1174 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 19:29:59,672 INFO L231 Difference]: Finished difference. Result has 102 places, 99 transitions, 890 flow [2024-06-27 19:29:59,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=890, PETRI_PLACES=102, PETRI_TRANSITIONS=99} [2024-06-27 19:29:59,672 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 61 predicate places. [2024-06-27 19:29:59,672 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 99 transitions, 890 flow [2024-06-27 19:29:59,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:59,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:29:59,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:29:59,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 19:29:59,672 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:29:59,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:29:59,673 INFO L85 PathProgramCache]: Analyzing trace with hash -545647347, now seen corresponding path program 4 times [2024-06-27 19:29:59,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:29:59,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715373571] [2024-06-27 19:29:59,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:29:59,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:29:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:29:59,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:29:59,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:29:59,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715373571] [2024-06-27 19:29:59,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715373571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:29:59,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:29:59,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:29:59,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680083591] [2024-06-27 19:29:59,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:29:59,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:29:59,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:29:59,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:29:59,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:29:59,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:29:59,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 99 transitions, 890 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:59,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:29:59,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:29:59,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:00,082 INFO L124 PetriNetUnfolderBase]: 1173/2013 cut-off events. [2024-06-27 19:30:00,096 INFO L125 PetriNetUnfolderBase]: For 25262/25262 co-relation queries the response was YES. [2024-06-27 19:30:00,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9623 conditions, 2013 events. 1173/2013 cut-off events. For 25262/25262 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11244 event pairs, 382 based on Foata normal form. 16/2026 useless extension candidates. Maximal degree in co-relation 9576. Up to 1691 conditions per place. [2024-06-27 19:30:00,107 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 93 selfloop transitions, 26 changer transitions 0/127 dead transitions. [2024-06-27 19:30:00,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 127 transitions, 1232 flow [2024-06-27 19:30:00,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:30:00,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:30:00,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-27 19:30:00,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6178571428571429 [2024-06-27 19:30:00,120 INFO L175 Difference]: Start difference. First operand has 102 places, 99 transitions, 890 flow. Second operand 7 states and 173 transitions. [2024-06-27 19:30:00,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 127 transitions, 1232 flow [2024-06-27 19:30:00,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 127 transitions, 1171 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 19:30:00,143 INFO L231 Difference]: Finished difference. Result has 105 places, 100 transitions, 912 flow [2024-06-27 19:30:00,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=912, PETRI_PLACES=105, PETRI_TRANSITIONS=100} [2024-06-27 19:30:00,143 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 64 predicate places. [2024-06-27 19:30:00,143 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 100 transitions, 912 flow [2024-06-27 19:30:00,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:00,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:00,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:00,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 19:30:00,144 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:00,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:00,144 INFO L85 PathProgramCache]: Analyzing trace with hash 418794199, now seen corresponding path program 2 times [2024-06-27 19:30:00,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:00,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039976191] [2024-06-27 19:30:00,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:00,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:00,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:00,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:00,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:00,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039976191] [2024-06-27 19:30:00,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039976191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:00,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:00,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:00,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125794344] [2024-06-27 19:30:00,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:00,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:00,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:00,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:00,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:00,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:00,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 100 transitions, 912 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:00,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:00,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:00,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:00,507 INFO L124 PetriNetUnfolderBase]: 1214/2094 cut-off events. [2024-06-27 19:30:00,507 INFO L125 PetriNetUnfolderBase]: For 26794/26794 co-relation queries the response was YES. [2024-06-27 19:30:00,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9978 conditions, 2094 events. 1214/2094 cut-off events. For 26794/26794 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11814 event pairs, 382 based on Foata normal form. 12/2103 useless extension candidates. Maximal degree in co-relation 9930. Up to 1675 conditions per place. [2024-06-27 19:30:00,518 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 95 selfloop transitions, 28 changer transitions 0/131 dead transitions. [2024-06-27 19:30:00,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 131 transitions, 1276 flow [2024-06-27 19:30:00,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:30:00,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:30:00,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 19:30:00,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-06-27 19:30:00,520 INFO L175 Difference]: Start difference. First operand has 105 places, 100 transitions, 912 flow. Second operand 7 states and 176 transitions. [2024-06-27 19:30:00,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 131 transitions, 1276 flow [2024-06-27 19:30:00,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 131 transitions, 1213 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 19:30:00,544 INFO L231 Difference]: Finished difference. Result has 107 places, 101 transitions, 937 flow [2024-06-27 19:30:00,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=937, PETRI_PLACES=107, PETRI_TRANSITIONS=101} [2024-06-27 19:30:00,544 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 66 predicate places. [2024-06-27 19:30:00,544 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 101 transitions, 937 flow [2024-06-27 19:30:00,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:00,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:00,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:00,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 19:30:00,546 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:00,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:00,546 INFO L85 PathProgramCache]: Analyzing trace with hash 984385245, now seen corresponding path program 3 times [2024-06-27 19:30:00,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:00,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422402792] [2024-06-27 19:30:00,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:00,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:00,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:00,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:00,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422402792] [2024-06-27 19:30:00,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422402792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:00,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:00,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:00,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380865746] [2024-06-27 19:30:00,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:00,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:00,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:00,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:00,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:00,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:00,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 101 transitions, 937 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:00,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:00,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:00,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:00,900 INFO L124 PetriNetUnfolderBase]: 1194/2062 cut-off events. [2024-06-27 19:30:00,900 INFO L125 PetriNetUnfolderBase]: For 25740/25740 co-relation queries the response was YES. [2024-06-27 19:30:00,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9617 conditions, 2062 events. 1194/2062 cut-off events. For 25740/25740 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 11654 event pairs, 327 based on Foata normal form. 12/2071 useless extension candidates. Maximal degree in co-relation 9568. Up to 1262 conditions per place. [2024-06-27 19:30:00,912 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 88 selfloop transitions, 35 changer transitions 0/131 dead transitions. [2024-06-27 19:30:00,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 131 transitions, 1239 flow [2024-06-27 19:30:00,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:30:00,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:30:00,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 19:30:00,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-27 19:30:00,914 INFO L175 Difference]: Start difference. First operand has 107 places, 101 transitions, 937 flow. Second operand 7 states and 175 transitions. [2024-06-27 19:30:00,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 131 transitions, 1239 flow [2024-06-27 19:30:00,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 131 transitions, 1167 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 19:30:00,948 INFO L231 Difference]: Finished difference. Result has 108 places, 100 transitions, 899 flow [2024-06-27 19:30:00,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=899, PETRI_PLACES=108, PETRI_TRANSITIONS=100} [2024-06-27 19:30:00,948 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 67 predicate places. [2024-06-27 19:30:00,948 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 100 transitions, 899 flow [2024-06-27 19:30:00,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:00,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:00,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:00,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 19:30:00,949 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:00,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:00,949 INFO L85 PathProgramCache]: Analyzing trace with hash -561238237, now seen corresponding path program 1 times [2024-06-27 19:30:00,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:00,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113006912] [2024-06-27 19:30:00,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:00,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:01,020 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 19:30:01,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:01,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113006912] [2024-06-27 19:30:01,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113006912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:01,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:01,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:30:01,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210728161] [2024-06-27 19:30:01,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:01,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:30:01,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:01,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:30:01,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:30:01,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:01,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 100 transitions, 899 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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 19:30:01,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:01,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:01,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:01,225 INFO L124 PetriNetUnfolderBase]: 1222/2115 cut-off events. [2024-06-27 19:30:01,225 INFO L125 PetriNetUnfolderBase]: For 25631/25631 co-relation queries the response was YES. [2024-06-27 19:30:01,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9958 conditions, 2115 events. 1222/2115 cut-off events. For 25631/25631 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 11977 event pairs, 378 based on Foata normal form. 2/2115 useless extension candidates. Maximal degree in co-relation 9908. Up to 1837 conditions per place. [2024-06-27 19:30:01,236 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 90 selfloop transitions, 33 changer transitions 0/131 dead transitions. [2024-06-27 19:30:01,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 131 transitions, 1441 flow [2024-06-27 19:30:01,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:30:01,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:30:01,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-27 19:30:01,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-06-27 19:30:01,237 INFO L175 Difference]: Start difference. First operand has 108 places, 100 transitions, 899 flow. Second operand 6 states and 148 transitions. [2024-06-27 19:30:01,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 131 transitions, 1441 flow [2024-06-27 19:30:01,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 131 transitions, 1353 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 19:30:01,264 INFO L231 Difference]: Finished difference. Result has 111 places, 114 transitions, 1062 flow [2024-06-27 19:30:01,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1062, PETRI_PLACES=111, PETRI_TRANSITIONS=114} [2024-06-27 19:30:01,264 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 70 predicate places. [2024-06-27 19:30:01,264 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 114 transitions, 1062 flow [2024-06-27 19:30:01,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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 19:30:01,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:01,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:01,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 19:30:01,265 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:01,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:01,265 INFO L85 PathProgramCache]: Analyzing trace with hash -389497927, now seen corresponding path program 2 times [2024-06-27 19:30:01,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:01,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796328005] [2024-06-27 19:30:01,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:01,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:01,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:01,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:01,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796328005] [2024-06-27 19:30:01,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796328005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:01,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:01,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:30:01,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696548840] [2024-06-27 19:30:01,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:01,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:30:01,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:01,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:30:01,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:30:01,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:01,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 114 transitions, 1062 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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 19:30:01,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:01,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:01,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:01,607 INFO L124 PetriNetUnfolderBase]: 1247/2154 cut-off events. [2024-06-27 19:30:01,607 INFO L125 PetriNetUnfolderBase]: For 28181/28181 co-relation queries the response was YES. [2024-06-27 19:30:01,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10477 conditions, 2154 events. 1247/2154 cut-off events. For 28181/28181 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12255 event pairs, 389 based on Foata normal form. 3/2154 useless extension candidates. Maximal degree in co-relation 10424. Up to 1840 conditions per place. [2024-06-27 19:30:01,618 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 86 selfloop transitions, 45 changer transitions 0/139 dead transitions. [2024-06-27 19:30:01,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 139 transitions, 1544 flow [2024-06-27 19:30:01,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:30:01,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:30:01,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-06-27 19:30:01,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.645 [2024-06-27 19:30:01,619 INFO L175 Difference]: Start difference. First operand has 111 places, 114 transitions, 1062 flow. Second operand 5 states and 129 transitions. [2024-06-27 19:30:01,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 139 transitions, 1544 flow [2024-06-27 19:30:01,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 139 transitions, 1482 flow, removed 31 selfloop flow, removed 0 redundant places. [2024-06-27 19:30:01,653 INFO L231 Difference]: Finished difference. Result has 117 places, 125 transitions, 1270 flow [2024-06-27 19:30:01,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1004, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1270, PETRI_PLACES=117, PETRI_TRANSITIONS=125} [2024-06-27 19:30:01,653 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 76 predicate places. [2024-06-27 19:30:01,653 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 125 transitions, 1270 flow [2024-06-27 19:30:01,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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 19:30:01,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:01,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:01,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 19:30:01,654 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:01,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:01,654 INFO L85 PathProgramCache]: Analyzing trace with hash -2142234227, now seen corresponding path program 3 times [2024-06-27 19:30:01,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:01,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487252546] [2024-06-27 19:30:01,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:01,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:01,713 INFO 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 19:30:01,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:01,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487252546] [2024-06-27 19:30:01,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487252546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:01,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:01,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:30:01,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656929097] [2024-06-27 19:30:01,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:01,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:30:01,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:01,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:30:01,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:30:01,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:01,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 125 transitions, 1270 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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 19:30:01,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:01,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:01,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:01,949 INFO L124 PetriNetUnfolderBase]: 1246/2155 cut-off events. [2024-06-27 19:30:01,949 INFO L125 PetriNetUnfolderBase]: For 31338/31338 co-relation queries the response was YES. [2024-06-27 19:30:01,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11022 conditions, 2155 events. 1246/2155 cut-off events. For 31338/31338 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12269 event pairs, 386 based on Foata normal form. 3/2155 useless extension candidates. Maximal degree in co-relation 10965. Up to 1841 conditions per place. [2024-06-27 19:30:01,961 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 83 selfloop transitions, 53 changer transitions 0/144 dead transitions. [2024-06-27 19:30:01,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 144 transitions, 1685 flow [2024-06-27 19:30:01,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:30:01,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:30:01,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-27 19:30:01,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6107142857142858 [2024-06-27 19:30:01,962 INFO L175 Difference]: Start difference. First operand has 117 places, 125 transitions, 1270 flow. Second operand 7 states and 171 transitions. [2024-06-27 19:30:01,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 144 transitions, 1685 flow [2024-06-27 19:30:01,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 144 transitions, 1612 flow, removed 29 selfloop flow, removed 1 redundant places. [2024-06-27 19:30:01,996 INFO L231 Difference]: Finished difference. Result has 123 places, 129 transitions, 1373 flow [2024-06-27 19:30:01,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1197, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1373, PETRI_PLACES=123, PETRI_TRANSITIONS=129} [2024-06-27 19:30:01,997 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 82 predicate places. [2024-06-27 19:30:01,997 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 129 transitions, 1373 flow [2024-06-27 19:30:01,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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 19:30:01,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:01,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:01,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 19:30:01,997 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:01,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:01,998 INFO L85 PathProgramCache]: Analyzing trace with hash -389282601, now seen corresponding path program 1 times [2024-06-27 19:30:01,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:01,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571887385] [2024-06-27 19:30:01,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:01,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:02,066 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 19:30:02,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:02,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571887385] [2024-06-27 19:30:02,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571887385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:02,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:02,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:30:02,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488160031] [2024-06-27 19:30:02,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:02,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:30:02,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:02,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:30:02,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:30:02,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-06-27 19:30:02,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 129 transitions, 1373 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:02,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:02,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-06-27 19:30:02,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:02,292 INFO L124 PetriNetUnfolderBase]: 1196/2095 cut-off events. [2024-06-27 19:30:02,292 INFO L125 PetriNetUnfolderBase]: For 36022/36027 co-relation queries the response was YES. [2024-06-27 19:30:02,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10905 conditions, 2095 events. 1196/2095 cut-off events. For 36022/36027 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 12137 event pairs, 367 based on Foata normal form. 17/2090 useless extension candidates. Maximal degree in co-relation 10846. Up to 1768 conditions per place. [2024-06-27 19:30:02,305 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 101 selfloop transitions, 21 changer transitions 0/144 dead transitions. [2024-06-27 19:30:02,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 144 transitions, 1689 flow [2024-06-27 19:30:02,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:30:02,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:30:02,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-06-27 19:30:02,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.63 [2024-06-27 19:30:02,306 INFO L175 Difference]: Start difference. First operand has 123 places, 129 transitions, 1373 flow. Second operand 5 states and 126 transitions. [2024-06-27 19:30:02,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 144 transitions, 1689 flow [2024-06-27 19:30:02,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 144 transitions, 1535 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-27 19:30:02,342 INFO L231 Difference]: Finished difference. Result has 123 places, 131 transitions, 1298 flow [2024-06-27 19:30:02,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1298, PETRI_PLACES=123, PETRI_TRANSITIONS=131} [2024-06-27 19:30:02,343 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 82 predicate places. [2024-06-27 19:30:02,343 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 131 transitions, 1298 flow [2024-06-27 19:30:02,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:02,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:02,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:02,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 19:30:02,343 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:02,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:02,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1907868594, now seen corresponding path program 1 times [2024-06-27 19:30:02,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:02,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272041391] [2024-06-27 19:30:02,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:02,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:02,399 INFO 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 19:30:02,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:02,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272041391] [2024-06-27 19:30:02,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272041391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:02,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:02,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:30:02,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908530191] [2024-06-27 19:30:02,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:02,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:30:02,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:02,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:30:02,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:30:02,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:02,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 131 transitions, 1298 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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 19:30:02,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:02,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:02,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:02,625 INFO L124 PetriNetUnfolderBase]: 1298/2245 cut-off events. [2024-06-27 19:30:02,625 INFO L125 PetriNetUnfolderBase]: For 34833/34833 co-relation queries the response was YES. [2024-06-27 19:30:02,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11677 conditions, 2245 events. 1298/2245 cut-off events. For 34833/34833 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 12832 event pairs, 388 based on Foata normal form. 1/2241 useless extension candidates. Maximal degree in co-relation 11617. Up to 1936 conditions per place. [2024-06-27 19:30:02,638 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 101 selfloop transitions, 50 changer transitions 0/159 dead transitions. [2024-06-27 19:30:02,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 159 transitions, 1857 flow [2024-06-27 19:30:02,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:30:02,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:30:02,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-27 19:30:02,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6416666666666667 [2024-06-27 19:30:02,639 INFO L175 Difference]: Start difference. First operand has 123 places, 131 transitions, 1298 flow. Second operand 6 states and 154 transitions. [2024-06-27 19:30:02,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 159 transitions, 1857 flow [2024-06-27 19:30:02,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 159 transitions, 1800 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 19:30:02,678 INFO L231 Difference]: Finished difference. Result has 126 places, 138 transitions, 1444 flow [2024-06-27 19:30:02,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1241, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1444, PETRI_PLACES=126, PETRI_TRANSITIONS=138} [2024-06-27 19:30:02,679 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 85 predicate places. [2024-06-27 19:30:02,679 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 138 transitions, 1444 flow [2024-06-27 19:30:02,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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 19:30:02,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:02,679 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 19:30:02,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 19:30:02,679 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:02,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:02,680 INFO L85 PathProgramCache]: Analyzing trace with hash 209593462, now seen corresponding path program 2 times [2024-06-27 19:30:02,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:02,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637191854] [2024-06-27 19:30:02,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:02,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:02,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:02,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:02,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637191854] [2024-06-27 19:30:02,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637191854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:02,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:02,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:30:02,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045785864] [2024-06-27 19:30:02,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:02,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:30:02,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:02,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:30:02,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:30:02,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:02,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 138 transitions, 1444 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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 19:30:02,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:02,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:02,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:03,027 INFO L124 PetriNetUnfolderBase]: 1318/2285 cut-off events. [2024-06-27 19:30:03,027 INFO L125 PetriNetUnfolderBase]: For 36910/36910 co-relation queries the response was YES. [2024-06-27 19:30:03,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11996 conditions, 2285 events. 1318/2285 cut-off events. For 36910/36910 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 13130 event pairs, 377 based on Foata normal form. 1/2283 useless extension candidates. Maximal degree in co-relation 11935. Up to 2011 conditions per place. [2024-06-27 19:30:03,042 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 125 selfloop transitions, 33 changer transitions 0/166 dead transitions. [2024-06-27 19:30:03,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 166 transitions, 1959 flow [2024-06-27 19:30:03,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:30:03,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:30:03,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-27 19:30:03,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6208333333333333 [2024-06-27 19:30:03,043 INFO L175 Difference]: Start difference. First operand has 126 places, 138 transitions, 1444 flow. Second operand 6 states and 149 transitions. [2024-06-27 19:30:03,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 166 transitions, 1959 flow [2024-06-27 19:30:03,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 166 transitions, 1867 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-06-27 19:30:03,093 INFO L231 Difference]: Finished difference. Result has 130 places, 149 transitions, 1589 flow [2024-06-27 19:30:03,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1364, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1589, PETRI_PLACES=130, PETRI_TRANSITIONS=149} [2024-06-27 19:30:03,093 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 89 predicate places. [2024-06-27 19:30:03,093 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 149 transitions, 1589 flow [2024-06-27 19:30:03,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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 19:30:03,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:03,094 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 19:30:03,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 19:30:03,094 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:03,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:03,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1978846090, now seen corresponding path program 3 times [2024-06-27 19:30:03,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:03,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035623036] [2024-06-27 19:30:03,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:03,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:03,163 INFO 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 19:30:03,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:03,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035623036] [2024-06-27 19:30:03,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035623036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:03,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:03,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:30:03,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329557883] [2024-06-27 19:30:03,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:03,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:30:03,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:03,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:30:03,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:30:03,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:03,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 149 transitions, 1589 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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 19:30:03,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:03,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:03,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:03,444 INFO L124 PetriNetUnfolderBase]: 1323/2291 cut-off events. [2024-06-27 19:30:03,444 INFO L125 PetriNetUnfolderBase]: For 39428/39428 co-relation queries the response was YES. [2024-06-27 19:30:03,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12015 conditions, 2291 events. 1323/2291 cut-off events. For 39428/39428 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 13159 event pairs, 386 based on Foata normal form. 1/2290 useless extension candidates. Maximal degree in co-relation 11953. Up to 1960 conditions per place. [2024-06-27 19:30:03,458 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 109 selfloop transitions, 53 changer transitions 0/170 dead transitions. [2024-06-27 19:30:03,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 170 transitions, 2111 flow [2024-06-27 19:30:03,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:30:03,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:30:03,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-27 19:30:03,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-27 19:30:03,458 INFO L175 Difference]: Start difference. First operand has 130 places, 149 transitions, 1589 flow. Second operand 6 states and 150 transitions. [2024-06-27 19:30:03,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 170 transitions, 2111 flow [2024-06-27 19:30:03,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 170 transitions, 2046 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-27 19:30:03,515 INFO L231 Difference]: Finished difference. Result has 134 places, 152 transitions, 1674 flow [2024-06-27 19:30:03,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1524, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1674, PETRI_PLACES=134, PETRI_TRANSITIONS=152} [2024-06-27 19:30:03,515 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 93 predicate places. [2024-06-27 19:30:03,515 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 152 transitions, 1674 flow [2024-06-27 19:30:03,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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 19:30:03,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:03,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:03,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 19:30:03,516 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:03,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:03,516 INFO L85 PathProgramCache]: Analyzing trace with hash 377650042, now seen corresponding path program 4 times [2024-06-27 19:30:03,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:03,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875275097] [2024-06-27 19:30:03,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:03,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:03,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:03,583 INFO 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 19:30:03,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:03,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875275097] [2024-06-27 19:30:03,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875275097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:03,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:03,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:30:03,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154117706] [2024-06-27 19:30:03,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:03,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:30:03,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:03,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:30:03,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:30:03,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:03,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 152 transitions, 1674 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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 19:30:03,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:03,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:03,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:03,821 INFO L124 PetriNetUnfolderBase]: 1315/2279 cut-off events. [2024-06-27 19:30:03,821 INFO L125 PetriNetUnfolderBase]: For 41446/41446 co-relation queries the response was YES. [2024-06-27 19:30:03,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12056 conditions, 2279 events. 1315/2279 cut-off events. For 41446/41446 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 13134 event pairs, 386 based on Foata normal form. 2/2279 useless extension candidates. Maximal degree in co-relation 11993. Up to 1952 conditions per place. [2024-06-27 19:30:03,836 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 109 selfloop transitions, 49 changer transitions 0/166 dead transitions. [2024-06-27 19:30:03,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 166 transitions, 2084 flow [2024-06-27 19:30:03,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:30:03,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:30:03,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-27 19:30:03,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6125 [2024-06-27 19:30:03,837 INFO L175 Difference]: Start difference. First operand has 134 places, 152 transitions, 1674 flow. Second operand 6 states and 147 transitions. [2024-06-27 19:30:03,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 166 transitions, 2084 flow [2024-06-27 19:30:03,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 166 transitions, 1965 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-27 19:30:03,901 INFO L231 Difference]: Finished difference. Result has 137 places, 152 transitions, 1661 flow [2024-06-27 19:30:03,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1555, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1661, PETRI_PLACES=137, PETRI_TRANSITIONS=152} [2024-06-27 19:30:03,902 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 96 predicate places. [2024-06-27 19:30:03,902 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 152 transitions, 1661 flow [2024-06-27 19:30:03,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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 19:30:03,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:03,902 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 19:30:03,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 19:30:03,902 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:03,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:03,902 INFO L85 PathProgramCache]: Analyzing trace with hash 810453080, now seen corresponding path program 5 times [2024-06-27 19:30:03,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:03,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280988383] [2024-06-27 19:30:03,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:03,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:03,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:03,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:03,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280988383] [2024-06-27 19:30:03,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280988383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:03,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:03,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:30:03,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457669720] [2024-06-27 19:30:03,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:03,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:30:03,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:03,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:30:03,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:30:03,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:03,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 152 transitions, 1661 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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 19:30:03,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:03,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:03,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:04,237 INFO L124 PetriNetUnfolderBase]: 1309/2266 cut-off events. [2024-06-27 19:30:04,237 INFO L125 PetriNetUnfolderBase]: For 42628/42628 co-relation queries the response was YES. [2024-06-27 19:30:04,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11967 conditions, 2266 events. 1309/2266 cut-off events. For 42628/42628 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 13073 event pairs, 397 based on Foata normal form. 2/2265 useless extension candidates. Maximal degree in co-relation 11903. Up to 1913 conditions per place. [2024-06-27 19:30:04,251 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 101 selfloop transitions, 59 changer transitions 0/168 dead transitions. [2024-06-27 19:30:04,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 168 transitions, 2083 flow [2024-06-27 19:30:04,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:30:04,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:30:04,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-06-27 19:30:04,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.66 [2024-06-27 19:30:04,252 INFO L175 Difference]: Start difference. First operand has 137 places, 152 transitions, 1661 flow. Second operand 5 states and 132 transitions. [2024-06-27 19:30:04,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 168 transitions, 2083 flow [2024-06-27 19:30:04,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 168 transitions, 1955 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 19:30:04,327 INFO L231 Difference]: Finished difference. Result has 137 places, 152 transitions, 1664 flow [2024-06-27 19:30:04,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1533, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1664, PETRI_PLACES=137, PETRI_TRANSITIONS=152} [2024-06-27 19:30:04,327 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 96 predicate places. [2024-06-27 19:30:04,327 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 152 transitions, 1664 flow [2024-06-27 19:30:04,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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 19:30:04,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:04,327 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 19:30:04,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 19:30:04,327 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:04,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:04,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1023355174, now seen corresponding path program 6 times [2024-06-27 19:30:04,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:04,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533088272] [2024-06-27 19:30:04,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:04,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:04,384 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 19:30:04,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:04,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533088272] [2024-06-27 19:30:04,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533088272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:04,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:04,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:30:04,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196855507] [2024-06-27 19:30:04,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:04,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:30:04,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:04,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:30:04,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:30:04,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:04,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 152 transitions, 1664 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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 19:30:04,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:04,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:04,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:04,687 INFO L124 PetriNetUnfolderBase]: 1301/2262 cut-off events. [2024-06-27 19:30:04,687 INFO L125 PetriNetUnfolderBase]: For 43353/43353 co-relation queries the response was YES. [2024-06-27 19:30:04,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11914 conditions, 2262 events. 1301/2262 cut-off events. For 43353/43353 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 13000 event pairs, 377 based on Foata normal form. 2/2261 useless extension candidates. Maximal degree in co-relation 11849. Up to 1905 conditions per place. [2024-06-27 19:30:04,702 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 100 selfloop transitions, 70 changer transitions 0/178 dead transitions. [2024-06-27 19:30:04,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 178 transitions, 2070 flow [2024-06-27 19:30:04,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:30:04,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:30:04,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-27 19:30:04,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2024-06-27 19:30:04,703 INFO L175 Difference]: Start difference. First operand has 137 places, 152 transitions, 1664 flow. Second operand 7 states and 184 transitions. [2024-06-27 19:30:04,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 178 transitions, 2070 flow [2024-06-27 19:30:04,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 178 transitions, 1876 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 19:30:04,790 INFO L231 Difference]: Finished difference. Result has 138 places, 152 transitions, 1637 flow [2024-06-27 19:30:04,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1470, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1637, PETRI_PLACES=138, PETRI_TRANSITIONS=152} [2024-06-27 19:30:04,791 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 97 predicate places. [2024-06-27 19:30:04,791 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 152 transitions, 1637 flow [2024-06-27 19:30:04,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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 19:30:04,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:04,791 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 19:30:04,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 19:30:04,791 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:04,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:04,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1970266282, now seen corresponding path program 1 times [2024-06-27 19:30:04,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:04,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667633326] [2024-06-27 19:30:04,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:04,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:04,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:04,852 INFO 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 19:30:04,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:04,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667633326] [2024-06-27 19:30:04,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667633326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:04,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:04,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:30:04,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843699509] [2024-06-27 19:30:04,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:04,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:30:04,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:04,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:30:04,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:30:04,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:04,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 152 transitions, 1637 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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 19:30:04,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:04,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:04,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:05,127 INFO L124 PetriNetUnfolderBase]: 1309/2276 cut-off events. [2024-06-27 19:30:05,127 INFO L125 PetriNetUnfolderBase]: For 43248/43248 co-relation queries the response was YES. [2024-06-27 19:30:05,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12011 conditions, 2276 events. 1309/2276 cut-off events. For 43248/43248 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 13108 event pairs, 341 based on Foata normal form. 2/2277 useless extension candidates. Maximal degree in co-relation 11946. Up to 2019 conditions per place. [2024-06-27 19:30:05,140 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 147 selfloop transitions, 20 changer transitions 0/175 dead transitions. [2024-06-27 19:30:05,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 175 transitions, 2157 flow [2024-06-27 19:30:05,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:30:05,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:30:05,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-27 19:30:05,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-27 19:30:05,141 INFO L175 Difference]: Start difference. First operand has 138 places, 152 transitions, 1637 flow. Second operand 6 states and 144 transitions. [2024-06-27 19:30:05,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 175 transitions, 2157 flow [2024-06-27 19:30:05,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 175 transitions, 2005 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 19:30:05,221 INFO L231 Difference]: Finished difference. Result has 137 places, 156 transitions, 1614 flow [2024-06-27 19:30:05,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1489, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1614, PETRI_PLACES=137, PETRI_TRANSITIONS=156} [2024-06-27 19:30:05,221 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 96 predicate places. [2024-06-27 19:30:05,221 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 156 transitions, 1614 flow [2024-06-27 19:30:05,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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 19:30:05,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:05,221 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 19:30:05,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 19:30:05,222 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:05,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:05,222 INFO L85 PathProgramCache]: Analyzing trace with hash 728727600, now seen corresponding path program 2 times [2024-06-27 19:30:05,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:05,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742358730] [2024-06-27 19:30:05,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:05,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:05,284 INFO 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 19:30:05,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:05,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742358730] [2024-06-27 19:30:05,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742358730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:05,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:05,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:30:05,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869864816] [2024-06-27 19:30:05,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:05,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:30:05,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:05,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:30:05,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:30:05,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:05,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 156 transitions, 1614 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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 19:30:05,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:05,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:05,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:05,524 INFO L124 PetriNetUnfolderBase]: 1317/2299 cut-off events. [2024-06-27 19:30:05,524 INFO L125 PetriNetUnfolderBase]: For 41463/41463 co-relation queries the response was YES. [2024-06-27 19:30:05,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11971 conditions, 2299 events. 1317/2299 cut-off events. For 41463/41463 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 13296 event pairs, 372 based on Foata normal form. 2/2300 useless extension candidates. Maximal degree in co-relation 11906. Up to 2062 conditions per place. [2024-06-27 19:30:05,539 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 147 selfloop transitions, 17 changer transitions 0/172 dead transitions. [2024-06-27 19:30:05,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 172 transitions, 2018 flow [2024-06-27 19:30:05,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:30:05,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:30:05,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-27 19:30:05,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5791666666666667 [2024-06-27 19:30:05,553 INFO L175 Difference]: Start difference. First operand has 137 places, 156 transitions, 1614 flow. Second operand 6 states and 139 transitions. [2024-06-27 19:30:05,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 172 transitions, 2018 flow [2024-06-27 19:30:05,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 172 transitions, 1944 flow, removed 29 selfloop flow, removed 2 redundant places. [2024-06-27 19:30:05,641 INFO L231 Difference]: Finished difference. Result has 141 places, 158 transitions, 1625 flow [2024-06-27 19:30:05,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1552, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1625, PETRI_PLACES=141, PETRI_TRANSITIONS=158} [2024-06-27 19:30:05,641 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 100 predicate places. [2024-06-27 19:30:05,641 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 158 transitions, 1625 flow [2024-06-27 19:30:05,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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 19:30:05,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:05,642 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 19:30:05,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 19:30:05,642 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:05,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:05,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1984928720, now seen corresponding path program 3 times [2024-06-27 19:30:05,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:05,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505497169] [2024-06-27 19:30:05,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:05,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:05,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:05,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:05,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505497169] [2024-06-27 19:30:05,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505497169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:05,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:05,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:30:05,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977556808] [2024-06-27 19:30:05,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:05,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:30:05,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:05,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:30:05,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:30:05,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:05,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 158 transitions, 1625 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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 19:30:05,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:05,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:05,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:06,027 INFO L124 PetriNetUnfolderBase]: 1312/2281 cut-off events. [2024-06-27 19:30:06,027 INFO L125 PetriNetUnfolderBase]: For 42195/42195 co-relation queries the response was YES. [2024-06-27 19:30:06,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11856 conditions, 2281 events. 1312/2281 cut-off events. For 42195/42195 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 13148 event pairs, 340 based on Foata normal form. 2/2282 useless extension candidates. Maximal degree in co-relation 11789. Up to 2040 conditions per place. [2024-06-27 19:30:06,042 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 150 selfloop transitions, 16 changer transitions 0/174 dead transitions. [2024-06-27 19:30:06,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 174 transitions, 1997 flow [2024-06-27 19:30:06,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:30:06,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:30:06,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-06-27 19:30:06,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-06-27 19:30:06,043 INFO L175 Difference]: Start difference. First operand has 141 places, 158 transitions, 1625 flow. Second operand 5 states and 124 transitions. [2024-06-27 19:30:06,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 174 transitions, 1997 flow [2024-06-27 19:30:06,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 174 transitions, 1924 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-27 19:30:06,135 INFO L231 Difference]: Finished difference. Result has 142 places, 158 transitions, 1592 flow [2024-06-27 19:30:06,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1552, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1592, PETRI_PLACES=142, PETRI_TRANSITIONS=158} [2024-06-27 19:30:06,136 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 101 predicate places. [2024-06-27 19:30:06,136 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 158 transitions, 1592 flow [2024-06-27 19:30:06,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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 19:30:06,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:06,136 INFO 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 19:30:06,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 19:30:06,136 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:06,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:06,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1671073924, now seen corresponding path program 1 times [2024-06-27 19:30:06,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:06,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639993901] [2024-06-27 19:30:06,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:06,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:06,204 INFO 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 19:30:06,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:06,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639993901] [2024-06-27 19:30:06,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639993901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:06,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:06,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:30:06,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983083350] [2024-06-27 19:30:06,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:06,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:30:06,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:06,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:30:06,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:30:06,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-06-27 19:30:06,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 158 transitions, 1592 flow. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:06,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:06,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-06-27 19:30:06,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:06,548 INFO L124 PetriNetUnfolderBase]: 1255/2222 cut-off events. [2024-06-27 19:30:06,548 INFO L125 PetriNetUnfolderBase]: For 47205/47205 co-relation queries the response was YES. [2024-06-27 19:30:06,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11613 conditions, 2222 events. 1255/2222 cut-off events. For 47205/47205 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 12999 event pairs, 271 based on Foata normal form. 7/2210 useless extension candidates. Maximal degree in co-relation 11545. Up to 1794 conditions per place. [2024-06-27 19:30:06,565 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 124 selfloop transitions, 30 changer transitions 1/181 dead transitions. [2024-06-27 19:30:06,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 181 transitions, 1982 flow [2024-06-27 19:30:06,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:30:06,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:30:06,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-06-27 19:30:06,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.685 [2024-06-27 19:30:06,566 INFO L175 Difference]: Start difference. First operand has 142 places, 158 transitions, 1592 flow. Second operand 5 states and 137 transitions. [2024-06-27 19:30:06,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 181 transitions, 1982 flow [2024-06-27 19:30:06,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 181 transitions, 1943 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 19:30:06,642 INFO L231 Difference]: Finished difference. Result has 143 places, 159 transitions, 1636 flow [2024-06-27 19:30:06,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1553, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1636, PETRI_PLACES=143, PETRI_TRANSITIONS=159} [2024-06-27 19:30:06,642 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 102 predicate places. [2024-06-27 19:30:06,643 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 159 transitions, 1636 flow [2024-06-27 19:30:06,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:06,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:06,643 INFO 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 19:30:06,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 19:30:06,643 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:06,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:06,644 INFO L85 PathProgramCache]: Analyzing trace with hash -438413514, now seen corresponding path program 2 times [2024-06-27 19:30:06,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:06,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527687766] [2024-06-27 19:30:06,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:06,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:06,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:06,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:06,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527687766] [2024-06-27 19:30:06,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527687766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:06,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:06,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:30:06,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403860563] [2024-06-27 19:30:06,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:06,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:30:06,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:06,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:30:06,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:30:06,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-06-27 19:30:06,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 159 transitions, 1636 flow. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:06,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:06,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-06-27 19:30:06,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:06,996 INFO L124 PetriNetUnfolderBase]: 1257/2215 cut-off events. [2024-06-27 19:30:06,996 INFO L125 PetriNetUnfolderBase]: For 48046/48051 co-relation queries the response was YES. [2024-06-27 19:30:07,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11645 conditions, 2215 events. 1257/2215 cut-off events. For 48046/48051 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 12962 event pairs, 277 based on Foata normal form. 13/2208 useless extension candidates. Maximal degree in co-relation 11576. Up to 1693 conditions per place. [2024-06-27 19:30:07,014 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 129 selfloop transitions, 25 changer transitions 0/180 dead transitions. [2024-06-27 19:30:07,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 180 transitions, 2094 flow [2024-06-27 19:30:07,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:30:07,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:30:07,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-06-27 19:30:07,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.655 [2024-06-27 19:30:07,016 INFO L175 Difference]: Start difference. First operand has 143 places, 159 transitions, 1636 flow. Second operand 5 states and 131 transitions. [2024-06-27 19:30:07,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 180 transitions, 2094 flow [2024-06-27 19:30:07,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 180 transitions, 2039 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 19:30:07,108 INFO L231 Difference]: Finished difference. Result has 145 places, 160 transitions, 1647 flow [2024-06-27 19:30:07,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1647, PETRI_PLACES=145, PETRI_TRANSITIONS=160} [2024-06-27 19:30:07,108 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 104 predicate places. [2024-06-27 19:30:07,108 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 160 transitions, 1647 flow [2024-06-27 19:30:07,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:07,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:07,109 INFO 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 19:30:07,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 19:30:07,109 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:07,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:07,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1027154146, now seen corresponding path program 1 times [2024-06-27 19:30:07,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:07,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375119163] [2024-06-27 19:30:07,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:07,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:07,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:07,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:07,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375119163] [2024-06-27 19:30:07,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375119163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:07,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:07,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:07,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197026412] [2024-06-27 19:30:07,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:07,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:07,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:07,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:07,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:07,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:07,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 160 transitions, 1647 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:07,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:07,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:07,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:07,539 INFO L124 PetriNetUnfolderBase]: 1501/2597 cut-off events. [2024-06-27 19:30:07,539 INFO L125 PetriNetUnfolderBase]: For 67027/67027 co-relation queries the response was YES. [2024-06-27 19:30:07,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14260 conditions, 2597 events. 1501/2597 cut-off events. For 67027/67027 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 15360 event pairs, 362 based on Foata normal form. 12/2607 useless extension candidates. Maximal degree in co-relation 14190. Up to 1840 conditions per place. [2024-06-27 19:30:07,554 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 132 selfloop transitions, 56 changer transitions 0/196 dead transitions. [2024-06-27 19:30:07,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 196 transitions, 2387 flow [2024-06-27 19:30:07,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:30:07,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:30:07,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-27 19:30:07,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6321428571428571 [2024-06-27 19:30:07,555 INFO L175 Difference]: Start difference. First operand has 145 places, 160 transitions, 1647 flow. Second operand 7 states and 177 transitions. [2024-06-27 19:30:07,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 196 transitions, 2387 flow [2024-06-27 19:30:07,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 196 transitions, 2344 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 19:30:07,658 INFO L231 Difference]: Finished difference. Result has 151 places, 165 transitions, 1814 flow [2024-06-27 19:30:07,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1604, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1814, PETRI_PLACES=151, PETRI_TRANSITIONS=165} [2024-06-27 19:30:07,659 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 110 predicate places. [2024-06-27 19:30:07,659 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 165 transitions, 1814 flow [2024-06-27 19:30:07,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:07,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:07,659 INFO 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 19:30:07,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 19:30:07,659 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:07,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:07,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1015949186, now seen corresponding path program 2 times [2024-06-27 19:30:07,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:07,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742277292] [2024-06-27 19:30:07,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:07,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:07,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:07,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:07,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742277292] [2024-06-27 19:30:07,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742277292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:07,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:07,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:07,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123107848] [2024-06-27 19:30:07,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:07,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:07,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:07,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:07,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:07,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:07,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 165 transitions, 1814 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:07,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:07,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:07,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:08,072 INFO L124 PetriNetUnfolderBase]: 1557/2693 cut-off events. [2024-06-27 19:30:08,073 INFO L125 PetriNetUnfolderBase]: For 75435/75435 co-relation queries the response was YES. [2024-06-27 19:30:08,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15137 conditions, 2693 events. 1557/2693 cut-off events. For 75435/75435 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 16083 event pairs, 462 based on Foata normal form. 16/2707 useless extension candidates. Maximal degree in co-relation 15065. Up to 2279 conditions per place. [2024-06-27 19:30:08,092 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 124 selfloop transitions, 53 changer transitions 0/185 dead transitions. [2024-06-27 19:30:08,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 185 transitions, 2270 flow [2024-06-27 19:30:08,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:30:08,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:30:08,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-27 19:30:08,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-27 19:30:08,093 INFO L175 Difference]: Start difference. First operand has 151 places, 165 transitions, 1814 flow. Second operand 7 states and 168 transitions. [2024-06-27 19:30:08,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 185 transitions, 2270 flow [2024-06-27 19:30:08,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 185 transitions, 2183 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-27 19:30:08,211 INFO L231 Difference]: Finished difference. Result has 156 places, 167 transitions, 1881 flow [2024-06-27 19:30:08,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1727, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1881, PETRI_PLACES=156, PETRI_TRANSITIONS=167} [2024-06-27 19:30:08,212 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 115 predicate places. [2024-06-27 19:30:08,212 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 167 transitions, 1881 flow [2024-06-27 19:30:08,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:08,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:08,212 INFO 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 19:30:08,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 19:30:08,212 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:08,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:08,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1029028096, now seen corresponding path program 3 times [2024-06-27 19:30:08,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:08,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085891109] [2024-06-27 19:30:08,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:08,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:08,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:08,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:08,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085891109] [2024-06-27 19:30:08,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085891109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:08,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:08,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:08,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483201467] [2024-06-27 19:30:08,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:08,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:08,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:08,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:08,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:08,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:08,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 167 transitions, 1881 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:08,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:08,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:08,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:08,613 INFO L124 PetriNetUnfolderBase]: 1663/2869 cut-off events. [2024-06-27 19:30:08,613 INFO L125 PetriNetUnfolderBase]: For 84893/84893 co-relation queries the response was YES. [2024-06-27 19:30:08,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16612 conditions, 2869 events. 1663/2869 cut-off events. For 84893/84893 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 17393 event pairs, 479 based on Foata normal form. 12/2879 useless extension candidates. Maximal degree in co-relation 16538. Up to 2287 conditions per place. [2024-06-27 19:30:08,634 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 133 selfloop transitions, 52 changer transitions 0/193 dead transitions. [2024-06-27 19:30:08,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 193 transitions, 2485 flow [2024-06-27 19:30:08,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:30:08,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:30:08,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-27 19:30:08,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6107142857142858 [2024-06-27 19:30:08,635 INFO L175 Difference]: Start difference. First operand has 156 places, 167 transitions, 1881 flow. Second operand 7 states and 171 transitions. [2024-06-27 19:30:08,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 193 transitions, 2485 flow [2024-06-27 19:30:08,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 193 transitions, 2359 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 19:30:08,746 INFO L231 Difference]: Finished difference. Result has 159 places, 171 transitions, 1963 flow [2024-06-27 19:30:08,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1755, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1963, PETRI_PLACES=159, PETRI_TRANSITIONS=171} [2024-06-27 19:30:08,746 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 118 predicate places. [2024-06-27 19:30:08,746 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 171 transitions, 1963 flow [2024-06-27 19:30:08,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:08,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:08,746 INFO 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 19:30:08,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 19:30:08,746 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:08,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:08,747 INFO L85 PathProgramCache]: Analyzing trace with hash -645477022, now seen corresponding path program 4 times [2024-06-27 19:30:08,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:08,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501817144] [2024-06-27 19:30:08,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:08,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:08,837 INFO 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 19:30:08,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:08,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501817144] [2024-06-27 19:30:08,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501817144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:08,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:08,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:08,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181656070] [2024-06-27 19:30:08,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:08,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:08,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:08,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:08,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:08,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:08,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 171 transitions, 1963 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:08,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:08,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:08,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:09,209 INFO L124 PetriNetUnfolderBase]: 1795/3076 cut-off events. [2024-06-27 19:30:09,209 INFO L125 PetriNetUnfolderBase]: For 114772/114772 co-relation queries the response was YES. [2024-06-27 19:30:09,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17842 conditions, 3076 events. 1795/3076 cut-off events. For 114772/114772 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 18882 event pairs, 541 based on Foata normal form. 42/3115 useless extension candidates. Maximal degree in co-relation 17766. Up to 2493 conditions per place. [2024-06-27 19:30:09,232 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 119 selfloop transitions, 58 changer transitions 7/192 dead transitions. [2024-06-27 19:30:09,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 192 transitions, 2451 flow [2024-06-27 19:30:09,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:30:09,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:30:09,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-27 19:30:09,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-06-27 19:30:09,233 INFO L175 Difference]: Start difference. First operand has 159 places, 171 transitions, 1963 flow. Second operand 6 states and 152 transitions. [2024-06-27 19:30:09,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 192 transitions, 2451 flow [2024-06-27 19:30:09,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 192 transitions, 2354 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-27 19:30:09,354 INFO L231 Difference]: Finished difference. Result has 162 places, 168 transitions, 1997 flow [2024-06-27 19:30:09,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1866, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1997, PETRI_PLACES=162, PETRI_TRANSITIONS=168} [2024-06-27 19:30:09,355 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 121 predicate places. [2024-06-27 19:30:09,355 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 168 transitions, 1997 flow [2024-06-27 19:30:09,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:09,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:09,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:09,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 19:30:09,355 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:09,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:09,355 INFO L85 PathProgramCache]: Analyzing trace with hash -645480742, now seen corresponding path program 5 times [2024-06-27 19:30:09,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:09,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712480068] [2024-06-27 19:30:09,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:09,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:09,425 INFO 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 19:30:09,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:09,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712480068] [2024-06-27 19:30:09,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712480068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:09,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:09,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:09,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937176317] [2024-06-27 19:30:09,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:09,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:09,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:09,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:09,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:09,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:09,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 168 transitions, 1997 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:09,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:09,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:09,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:09,860 INFO L124 PetriNetUnfolderBase]: 1952/3359 cut-off events. [2024-06-27 19:30:09,860 INFO L125 PetriNetUnfolderBase]: For 136014/136014 co-relation queries the response was YES. [2024-06-27 19:30:09,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20162 conditions, 3359 events. 1952/3359 cut-off events. For 136014/136014 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 21090 event pairs, 496 based on Foata normal form. 36/3392 useless extension candidates. Maximal degree in co-relation 20084. Up to 1983 conditions per place. [2024-06-27 19:30:09,888 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 124 selfloop transitions, 59 changer transitions 10/201 dead transitions. [2024-06-27 19:30:09,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 201 transitions, 2691 flow [2024-06-27 19:30:09,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:30:09,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:30:09,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-06-27 19:30:09,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6708333333333333 [2024-06-27 19:30:09,889 INFO L175 Difference]: Start difference. First operand has 162 places, 168 transitions, 1997 flow. Second operand 6 states and 161 transitions. [2024-06-27 19:30:09,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 201 transitions, 2691 flow [2024-06-27 19:30:10,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 201 transitions, 2547 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 19:30:10,059 INFO L231 Difference]: Finished difference. Result has 165 places, 164 transitions, 1995 flow [2024-06-27 19:30:10,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1853, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1995, PETRI_PLACES=165, PETRI_TRANSITIONS=164} [2024-06-27 19:30:10,060 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 124 predicate places. [2024-06-27 19:30:10,060 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 164 transitions, 1995 flow [2024-06-27 19:30:10,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:10,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:10,060 INFO 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 19:30:10,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 19:30:10,060 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:10,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:10,060 INFO L85 PathProgramCache]: Analyzing trace with hash -446031082, now seen corresponding path program 6 times [2024-06-27 19:30:10,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:10,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955067079] [2024-06-27 19:30:10,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:10,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:10,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:10,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:10,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:10,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955067079] [2024-06-27 19:30:10,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955067079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:10,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:10,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:10,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522312478] [2024-06-27 19:30:10,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:10,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:10,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:10,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:10,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:10,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:10,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 164 transitions, 1995 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:10,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:10,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:10,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:10,547 INFO L124 PetriNetUnfolderBase]: 1732/2981 cut-off events. [2024-06-27 19:30:10,547 INFO L125 PetriNetUnfolderBase]: For 119403/119403 co-relation queries the response was YES. [2024-06-27 19:30:10,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17569 conditions, 2981 events. 1732/2981 cut-off events. For 119403/119403 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 18369 event pairs, 509 based on Foata normal form. 42/3020 useless extension candidates. Maximal degree in co-relation 17489. Up to 2410 conditions per place. [2024-06-27 19:30:10,571 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 118 selfloop transitions, 55 changer transitions 6/187 dead transitions. [2024-06-27 19:30:10,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 187 transitions, 2486 flow [2024-06-27 19:30:10,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:30:10,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:30:10,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 19:30:10,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.603125 [2024-06-27 19:30:10,572 INFO L175 Difference]: Start difference. First operand has 165 places, 164 transitions, 1995 flow. Second operand 8 states and 193 transitions. [2024-06-27 19:30:10,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 187 transitions, 2486 flow [2024-06-27 19:30:10,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 187 transitions, 2290 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-27 19:30:10,715 INFO L231 Difference]: Finished difference. Result has 166 places, 162 transitions, 1934 flow [2024-06-27 19:30:10,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1802, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1934, PETRI_PLACES=166, PETRI_TRANSITIONS=162} [2024-06-27 19:30:10,716 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 125 predicate places. [2024-06-27 19:30:10,716 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 162 transitions, 1934 flow [2024-06-27 19:30:10,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:10,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:10,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:10,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 19:30:10,717 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:10,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:10,717 INFO L85 PathProgramCache]: Analyzing trace with hash -438406570, now seen corresponding path program 1 times [2024-06-27 19:30:10,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:10,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5900401] [2024-06-27 19:30:10,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:10,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:10,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:10,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:10,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5900401] [2024-06-27 19:30:10,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5900401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:10,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:10,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:10,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734242882] [2024-06-27 19:30:10,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:10,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:10,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:10,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:10,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:10,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:10,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 162 transitions, 1934 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:10,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:10,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:10,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:11,193 INFO L124 PetriNetUnfolderBase]: 1744/3037 cut-off events. [2024-06-27 19:30:11,193 INFO L125 PetriNetUnfolderBase]: For 110083/110083 co-relation queries the response was YES. [2024-06-27 19:30:11,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16901 conditions, 3037 events. 1744/3037 cut-off events. For 110083/110083 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 18925 event pairs, 445 based on Foata normal form. 36/3070 useless extension candidates. Maximal degree in co-relation 16822. Up to 2283 conditions per place. [2024-06-27 19:30:11,215 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 116 selfloop transitions, 58 changer transitions 10/192 dead transitions. [2024-06-27 19:30:11,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 192 transitions, 2457 flow [2024-06-27 19:30:11,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:30:11,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:30:11,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 19:30:11,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.615625 [2024-06-27 19:30:11,219 INFO L175 Difference]: Start difference. First operand has 166 places, 162 transitions, 1934 flow. Second operand 8 states and 197 transitions. [2024-06-27 19:30:11,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 192 transitions, 2457 flow [2024-06-27 19:30:11,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 192 transitions, 2250 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 19:30:11,335 INFO L231 Difference]: Finished difference. Result has 167 places, 160 transitions, 1850 flow [2024-06-27 19:30:11,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1727, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1850, PETRI_PLACES=167, PETRI_TRANSITIONS=160} [2024-06-27 19:30:11,336 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 126 predicate places. [2024-06-27 19:30:11,336 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 160 transitions, 1850 flow [2024-06-27 19:30:11,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:11,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:11,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:11,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 19:30:11,337 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:11,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:11,337 INFO L85 PathProgramCache]: Analyzing trace with hash -2130994535, now seen corresponding path program 1 times [2024-06-27 19:30:11,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:11,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977611812] [2024-06-27 19:30:11,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:11,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:11,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:11,425 INFO 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 19:30:11,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:11,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977611812] [2024-06-27 19:30:11,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977611812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:11,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:11,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:11,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563859774] [2024-06-27 19:30:11,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:11,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:11,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:11,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:11,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:11,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:11,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 160 transitions, 1850 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:11,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:11,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:11,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:11,839 INFO L124 PetriNetUnfolderBase]: 1644/2854 cut-off events. [2024-06-27 19:30:11,839 INFO L125 PetriNetUnfolderBase]: For 82297/82297 co-relation queries the response was YES. [2024-06-27 19:30:11,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16236 conditions, 2854 events. 1644/2854 cut-off events. For 82297/82297 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 17439 event pairs, 453 based on Foata normal form. 1/2853 useless extension candidates. Maximal degree in co-relation 16155. Up to 2538 conditions per place. [2024-06-27 19:30:11,857 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 155 selfloop transitions, 26 changer transitions 0/189 dead transitions. [2024-06-27 19:30:11,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 189 transitions, 2330 flow [2024-06-27 19:30:11,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:30:11,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:30:11,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-27 19:30:11,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2024-06-27 19:30:11,859 INFO L175 Difference]: Start difference. First operand has 167 places, 160 transitions, 1850 flow. Second operand 7 states and 172 transitions. [2024-06-27 19:30:11,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 189 transitions, 2330 flow [2024-06-27 19:30:12,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 189 transitions, 2159 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 19:30:12,014 INFO L231 Difference]: Finished difference. Result has 166 places, 163 transitions, 1795 flow [2024-06-27 19:30:12,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1679, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1795, PETRI_PLACES=166, PETRI_TRANSITIONS=163} [2024-06-27 19:30:12,015 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 125 predicate places. [2024-06-27 19:30:12,015 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 163 transitions, 1795 flow [2024-06-27 19:30:12,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:12,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:12,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:12,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 19:30:12,016 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:12,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:12,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1765370697, now seen corresponding path program 2 times [2024-06-27 19:30:12,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:12,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830726156] [2024-06-27 19:30:12,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:12,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:12,075 INFO 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 19:30:12,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:12,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830726156] [2024-06-27 19:30:12,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830726156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:12,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:12,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:12,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904484760] [2024-06-27 19:30:12,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:12,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:12,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:12,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:12,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:12,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:12,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 163 transitions, 1795 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:12,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:12,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:12,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:12,471 INFO L124 PetriNetUnfolderBase]: 1673/2914 cut-off events. [2024-06-27 19:30:12,471 INFO L125 PetriNetUnfolderBase]: For 87798/87798 co-relation queries the response was YES. [2024-06-27 19:30:12,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16789 conditions, 2914 events. 1673/2914 cut-off events. For 87798/87798 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 18061 event pairs, 475 based on Foata normal form. 1/2909 useless extension candidates. Maximal degree in co-relation 16710. Up to 2423 conditions per place. [2024-06-27 19:30:12,499 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 120 selfloop transitions, 75 changer transitions 0/203 dead transitions. [2024-06-27 19:30:12,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 203 transitions, 2741 flow [2024-06-27 19:30:12,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:30:12,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:30:12,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-27 19:30:12,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-06-27 19:30:12,501 INFO L175 Difference]: Start difference. First operand has 166 places, 163 transitions, 1795 flow. Second operand 7 states and 182 transitions. [2024-06-27 19:30:12,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 203 transitions, 2741 flow [2024-06-27 19:30:12,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 203 transitions, 2639 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-27 19:30:12,676 INFO L231 Difference]: Finished difference. Result has 168 places, 177 transitions, 2097 flow [2024-06-27 19:30:12,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1699, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2097, PETRI_PLACES=168, PETRI_TRANSITIONS=177} [2024-06-27 19:30:12,677 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 127 predicate places. [2024-06-27 19:30:12,677 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 177 transitions, 2097 flow [2024-06-27 19:30:12,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:12,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:12,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:12,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 19:30:12,678 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:12,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:12,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1105209289, now seen corresponding path program 3 times [2024-06-27 19:30:12,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:12,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654253339] [2024-06-27 19:30:12,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:12,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:12,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:12,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:12,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654253339] [2024-06-27 19:30:12,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654253339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:12,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:12,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:12,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267178691] [2024-06-27 19:30:12,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:12,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:12,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:12,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:12,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:12,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:12,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 177 transitions, 2097 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:12,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:12,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:12,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:13,161 INFO L124 PetriNetUnfolderBase]: 1678/2915 cut-off events. [2024-06-27 19:30:13,161 INFO L125 PetriNetUnfolderBase]: For 90247/90247 co-relation queries the response was YES. [2024-06-27 19:30:13,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17351 conditions, 2915 events. 1678/2915 cut-off events. For 90247/90247 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 18031 event pairs, 467 based on Foata normal form. 1/2910 useless extension candidates. Maximal degree in co-relation 17271. Up to 2427 conditions per place. [2024-06-27 19:30:13,184 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 118 selfloop transitions, 77 changer transitions 0/203 dead transitions. [2024-06-27 19:30:13,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 203 transitions, 2865 flow [2024-06-27 19:30:13,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:30:13,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:30:13,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-27 19:30:13,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6357142857142857 [2024-06-27 19:30:13,186 INFO L175 Difference]: Start difference. First operand has 168 places, 177 transitions, 2097 flow. Second operand 7 states and 178 transitions. [2024-06-27 19:30:13,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 203 transitions, 2865 flow [2024-06-27 19:30:13,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 203 transitions, 2708 flow, removed 68 selfloop flow, removed 1 redundant places. [2024-06-27 19:30:13,472 INFO L231 Difference]: Finished difference. Result has 174 places, 180 transitions, 2164 flow [2024-06-27 19:30:13,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1968, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2164, PETRI_PLACES=174, PETRI_TRANSITIONS=180} [2024-06-27 19:30:13,472 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 133 predicate places. [2024-06-27 19:30:13,472 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 180 transitions, 2164 flow [2024-06-27 19:30:13,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:13,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:13,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:13,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 19:30:13,473 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:13,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:13,474 INFO L85 PathProgramCache]: Analyzing trace with hash -2027613709, now seen corresponding path program 4 times [2024-06-27 19:30:13,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:13,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758044293] [2024-06-27 19:30:13,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:13,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:13,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:13,566 INFO 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 19:30:13,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:13,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758044293] [2024-06-27 19:30:13,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758044293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:13,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:13,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:13,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698629483] [2024-06-27 19:30:13,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:13,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:13,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:13,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:13,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:13,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:13,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 180 transitions, 2164 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:13,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:13,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:13,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:13,969 INFO L124 PetriNetUnfolderBase]: 1683/2934 cut-off events. [2024-06-27 19:30:13,969 INFO L125 PetriNetUnfolderBase]: For 91161/91161 co-relation queries the response was YES. [2024-06-27 19:30:13,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17158 conditions, 2934 events. 1683/2934 cut-off events. For 91161/91161 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 18179 event pairs, 457 based on Foata normal form. 1/2933 useless extension candidates. Maximal degree in co-relation 17075. Up to 2598 conditions per place. [2024-06-27 19:30:13,995 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 167 selfloop transitions, 26 changer transitions 0/201 dead transitions. [2024-06-27 19:30:13,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 201 transitions, 2642 flow [2024-06-27 19:30:13,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:30:13,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:30:13,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-27 19:30:13,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2024-06-27 19:30:13,997 INFO L175 Difference]: Start difference. First operand has 174 places, 180 transitions, 2164 flow. Second operand 7 states and 165 transitions. [2024-06-27 19:30:13,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 201 transitions, 2642 flow [2024-06-27 19:30:14,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 201 transitions, 2486 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 19:30:14,154 INFO L231 Difference]: Finished difference. Result has 177 places, 183 transitions, 2114 flow [2024-06-27 19:30:14,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2011, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2114, PETRI_PLACES=177, PETRI_TRANSITIONS=183} [2024-06-27 19:30:14,155 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 136 predicate places. [2024-06-27 19:30:14,155 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 183 transitions, 2114 flow [2024-06-27 19:30:14,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:14,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:14,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:14,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 19:30:14,156 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:14,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:14,156 INFO L85 PathProgramCache]: Analyzing trace with hash -727912971, now seen corresponding path program 1 times [2024-06-27 19:30:14,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:14,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884674137] [2024-06-27 19:30:14,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:14,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:14,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:14,233 INFO 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 19:30:14,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:14,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884674137] [2024-06-27 19:30:14,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884674137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:14,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:14,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:14,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386695502] [2024-06-27 19:30:14,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:14,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:14,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:14,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:14,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:14,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:14,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 183 transitions, 2114 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:14,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:14,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:14,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:14,663 INFO L124 PetriNetUnfolderBase]: 1763/3040 cut-off events. [2024-06-27 19:30:14,663 INFO L125 PetriNetUnfolderBase]: For 109586/109586 co-relation queries the response was YES. [2024-06-27 19:30:14,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18419 conditions, 3040 events. 1763/3040 cut-off events. For 109586/109586 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 18820 event pairs, 476 based on Foata normal form. 2/3029 useless extension candidates. Maximal degree in co-relation 18335. Up to 2566 conditions per place. [2024-06-27 19:30:14,688 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 146 selfloop transitions, 64 changer transitions 0/218 dead transitions. [2024-06-27 19:30:14,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 218 transitions, 2825 flow [2024-06-27 19:30:14,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:30:14,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:30:14,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-27 19:30:14,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6392857142857142 [2024-06-27 19:30:14,689 INFO L175 Difference]: Start difference. First operand has 177 places, 183 transitions, 2114 flow. Second operand 7 states and 179 transitions. [2024-06-27 19:30:14,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 218 transitions, 2825 flow [2024-06-27 19:30:14,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 218 transitions, 2753 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 19:30:14,858 INFO L231 Difference]: Finished difference. Result has 180 places, 189 transitions, 2305 flow [2024-06-27 19:30:14,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2042, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2305, PETRI_PLACES=180, PETRI_TRANSITIONS=189} [2024-06-27 19:30:14,859 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 139 predicate places. [2024-06-27 19:30:14,859 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 189 transitions, 2305 flow [2024-06-27 19:30:14,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:14,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:14,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:14,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 19:30:14,860 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:14,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:14,860 INFO L85 PathProgramCache]: Analyzing trace with hash 550105849, now seen corresponding path program 2 times [2024-06-27 19:30:14,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:14,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636889352] [2024-06-27 19:30:14,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:14,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:14,932 INFO 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 19:30:14,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:14,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636889352] [2024-06-27 19:30:14,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636889352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:14,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:14,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:14,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566030543] [2024-06-27 19:30:14,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:14,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:14,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:14,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:14,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:14,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:14,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 189 transitions, 2305 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:14,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:14,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:14,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:15,293 INFO L124 PetriNetUnfolderBase]: 1758/3044 cut-off events. [2024-06-27 19:30:15,293 INFO L125 PetriNetUnfolderBase]: For 112532/112532 co-relation queries the response was YES. [2024-06-27 19:30:15,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18693 conditions, 3044 events. 1758/3044 cut-off events. For 112532/112532 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 18874 event pairs, 488 based on Foata normal form. 2/3039 useless extension candidates. Maximal degree in co-relation 18607. Up to 2649 conditions per place. [2024-06-27 19:30:15,318 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 143 selfloop transitions, 59 changer transitions 0/210 dead transitions. [2024-06-27 19:30:15,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 210 transitions, 2761 flow [2024-06-27 19:30:15,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:30:15,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:30:15,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-27 19:30:15,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6107142857142858 [2024-06-27 19:30:15,319 INFO L175 Difference]: Start difference. First operand has 180 places, 189 transitions, 2305 flow. Second operand 7 states and 171 transitions. [2024-06-27 19:30:15,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 210 transitions, 2761 flow [2024-06-27 19:30:15,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 210 transitions, 2623 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 19:30:15,501 INFO L231 Difference]: Finished difference. Result has 183 places, 189 transitions, 2290 flow [2024-06-27 19:30:15,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2167, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2290, PETRI_PLACES=183, PETRI_TRANSITIONS=189} [2024-06-27 19:30:15,502 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 142 predicate places. [2024-06-27 19:30:15,502 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 189 transitions, 2290 flow [2024-06-27 19:30:15,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:15,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:15,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:15,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 19:30:15,502 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:15,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:15,503 INFO L85 PathProgramCache]: Analyzing trace with hash -444125707, now seen corresponding path program 3 times [2024-06-27 19:30:15,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:15,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661539406] [2024-06-27 19:30:15,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:15,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:15,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:15,584 INFO 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 19:30:15,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:15,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661539406] [2024-06-27 19:30:15,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661539406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:15,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:15,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:15,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907949556] [2024-06-27 19:30:15,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:15,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:15,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:15,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:15,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:15,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:15,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 189 transitions, 2290 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:15,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:15,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:15,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:15,983 INFO L124 PetriNetUnfolderBase]: 1766/3061 cut-off events. [2024-06-27 19:30:15,984 INFO L125 PetriNetUnfolderBase]: For 116701/116701 co-relation queries the response was YES. [2024-06-27 19:30:16,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18807 conditions, 3061 events. 1766/3061 cut-off events. For 116701/116701 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 18963 event pairs, 476 based on Foata normal form. 2/3059 useless extension candidates. Maximal degree in co-relation 18720. Up to 2720 conditions per place. [2024-06-27 19:30:16,010 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 177 selfloop transitions, 25 changer transitions 0/210 dead transitions. [2024-06-27 19:30:16,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 210 transitions, 2790 flow [2024-06-27 19:30:16,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:30:16,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:30:16,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-27 19:30:16,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2024-06-27 19:30:16,012 INFO L175 Difference]: Start difference. First operand has 183 places, 189 transitions, 2290 flow. Second operand 7 states and 165 transitions. [2024-06-27 19:30:16,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 210 transitions, 2790 flow [2024-06-27 19:30:16,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 210 transitions, 2651 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 19:30:16,222 INFO L231 Difference]: Finished difference. Result has 185 places, 191 transitions, 2254 flow [2024-06-27 19:30:16,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2153, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2254, PETRI_PLACES=185, PETRI_TRANSITIONS=191} [2024-06-27 19:30:16,223 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 144 predicate places. [2024-06-27 19:30:16,223 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 191 transitions, 2254 flow [2024-06-27 19:30:16,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:16,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:16,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:16,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 19:30:16,223 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:16,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:16,224 INFO L85 PathProgramCache]: Analyzing trace with hash 2112212271, now seen corresponding path program 5 times [2024-06-27 19:30:16,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:16,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032872081] [2024-06-27 19:30:16,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:16,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:16,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:16,300 INFO 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 19:30:16,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:16,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032872081] [2024-06-27 19:30:16,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032872081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:16,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:16,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:16,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292725834] [2024-06-27 19:30:16,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:16,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:16,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:16,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:16,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:16,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:16,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 191 transitions, 2254 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:16,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:16,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:16,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:16,672 INFO L124 PetriNetUnfolderBase]: 1771/3063 cut-off events. [2024-06-27 19:30:16,673 INFO L125 PetriNetUnfolderBase]: For 120183/120183 co-relation queries the response was YES. [2024-06-27 19:30:16,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18850 conditions, 3063 events. 1771/3063 cut-off events. For 120183/120183 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 19076 event pairs, 496 based on Foata normal form. 1/3061 useless extension candidates. Maximal degree in co-relation 18762. Up to 2560 conditions per place. [2024-06-27 19:30:16,700 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 134 selfloop transitions, 74 changer transitions 0/216 dead transitions. [2024-06-27 19:30:16,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 216 transitions, 2968 flow [2024-06-27 19:30:16,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:30:16,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:30:16,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 19:30:16,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-06-27 19:30:16,701 INFO L175 Difference]: Start difference. First operand has 185 places, 191 transitions, 2254 flow. Second operand 7 states and 176 transitions. [2024-06-27 19:30:16,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 216 transitions, 2968 flow [2024-06-27 19:30:16,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 216 transitions, 2895 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 19:30:16,911 INFO L231 Difference]: Finished difference. Result has 187 places, 194 transitions, 2387 flow [2024-06-27 19:30:16,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2181, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2387, PETRI_PLACES=187, PETRI_TRANSITIONS=194} [2024-06-27 19:30:16,912 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 146 predicate places. [2024-06-27 19:30:16,912 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 194 transitions, 2387 flow [2024-06-27 19:30:16,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:16,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:16,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:16,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 19:30:16,913 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:16,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:16,913 INFO L85 PathProgramCache]: Analyzing trace with hash 999432917, now seen corresponding path program 6 times [2024-06-27 19:30:16,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:16,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948910492] [2024-06-27 19:30:16,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:16,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:16,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:16,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:16,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948910492] [2024-06-27 19:30:16,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948910492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:16,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:16,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:16,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377031033] [2024-06-27 19:30:16,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:16,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:16,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:16,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:16,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:17,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:17,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 194 transitions, 2387 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:17,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:17,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:17,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:17,358 INFO L124 PetriNetUnfolderBase]: 1776/3084 cut-off events. [2024-06-27 19:30:17,358 INFO L125 PetriNetUnfolderBase]: For 124615/124615 co-relation queries the response was YES. [2024-06-27 19:30:17,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19141 conditions, 3084 events. 1776/3084 cut-off events. For 124615/124615 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 19295 event pairs, 506 based on Foata normal form. 1/3082 useless extension candidates. Maximal degree in co-relation 19052. Up to 2564 conditions per place. [2024-06-27 19:30:17,385 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 133 selfloop transitions, 75 changer transitions 0/216 dead transitions. [2024-06-27 19:30:17,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 216 transitions, 3103 flow [2024-06-27 19:30:17,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:30:17,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:30:17,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-27 19:30:17,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6178571428571429 [2024-06-27 19:30:17,387 INFO L175 Difference]: Start difference. First operand has 187 places, 194 transitions, 2387 flow. Second operand 7 states and 173 transitions. [2024-06-27 19:30:17,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 216 transitions, 3103 flow [2024-06-27 19:30:17,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 216 transitions, 2845 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-27 19:30:17,591 INFO L231 Difference]: Finished difference. Result has 188 places, 197 transitions, 2343 flow [2024-06-27 19:30:17,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2150, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2343, PETRI_PLACES=188, PETRI_TRANSITIONS=197} [2024-06-27 19:30:17,592 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 147 predicate places. [2024-06-27 19:30:17,592 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 197 transitions, 2343 flow [2024-06-27 19:30:17,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:17,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:17,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:17,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 19:30:17,592 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:17,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:17,593 INFO L85 PathProgramCache]: Analyzing trace with hash 218987823, now seen corresponding path program 7 times [2024-06-27 19:30:17,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:17,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270036791] [2024-06-27 19:30:17,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:17,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:17,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:17,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:17,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270036791] [2024-06-27 19:30:17,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270036791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:17,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:17,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:17,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003372182] [2024-06-27 19:30:17,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:17,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:17,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:17,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:17,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:17,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:17,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 197 transitions, 2343 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:17,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:17,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:17,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:18,034 INFO L124 PetriNetUnfolderBase]: 1794/3103 cut-off events. [2024-06-27 19:30:18,034 INFO L125 PetriNetUnfolderBase]: For 131756/131756 co-relation queries the response was YES. [2024-06-27 19:30:18,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19252 conditions, 3103 events. 1794/3103 cut-off events. For 131756/131756 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 19377 event pairs, 497 based on Foata normal form. 2/3102 useless extension candidates. Maximal degree in co-relation 19164. Up to 2583 conditions per place. [2024-06-27 19:30:18,059 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 135 selfloop transitions, 77 changer transitions 0/220 dead transitions. [2024-06-27 19:30:18,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 220 transitions, 3107 flow [2024-06-27 19:30:18,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:30:18,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:30:18,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-27 19:30:18,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6107142857142858 [2024-06-27 19:30:18,061 INFO L175 Difference]: Start difference. First operand has 188 places, 197 transitions, 2343 flow. Second operand 7 states and 171 transitions. [2024-06-27 19:30:18,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 220 transitions, 3107 flow [2024-06-27 19:30:18,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 220 transitions, 2948 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 19:30:18,331 INFO L231 Difference]: Finished difference. Result has 191 places, 204 transitions, 2449 flow [2024-06-27 19:30:18,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2194, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2449, PETRI_PLACES=191, PETRI_TRANSITIONS=204} [2024-06-27 19:30:18,332 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 150 predicate places. [2024-06-27 19:30:18,332 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 204 transitions, 2449 flow [2024-06-27 19:30:18,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:18,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:18,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:18,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 19:30:18,332 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:18,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:18,333 INFO L85 PathProgramCache]: Analyzing trace with hash -654946761, now seen corresponding path program 8 times [2024-06-27 19:30:18,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:18,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521087061] [2024-06-27 19:30:18,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:18,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:18,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:18,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:18,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521087061] [2024-06-27 19:30:18,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521087061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:18,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:18,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:18,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93767027] [2024-06-27 19:30:18,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:18,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:18,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:18,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:18,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:18,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:18,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 204 transitions, 2449 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:18,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:18,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:18,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:18,808 INFO L124 PetriNetUnfolderBase]: 1788/3104 cut-off events. [2024-06-27 19:30:18,808 INFO L125 PetriNetUnfolderBase]: For 133606/133606 co-relation queries the response was YES. [2024-06-27 19:30:18,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19194 conditions, 3104 events. 1788/3104 cut-off events. For 133606/133606 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 19346 event pairs, 478 based on Foata normal form. 2/3104 useless extension candidates. Maximal degree in co-relation 19105. Up to 2640 conditions per place. [2024-06-27 19:30:18,835 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 161 selfloop transitions, 67 changer transitions 0/236 dead transitions. [2024-06-27 19:30:18,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 236 transitions, 3189 flow [2024-06-27 19:30:18,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:30:18,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:30:18,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-27 19:30:18,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.653125 [2024-06-27 19:30:18,836 INFO L175 Difference]: Start difference. First operand has 191 places, 204 transitions, 2449 flow. Second operand 8 states and 209 transitions. [2024-06-27 19:30:18,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 236 transitions, 3189 flow [2024-06-27 19:30:19,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 236 transitions, 3051 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-27 19:30:19,147 INFO L231 Difference]: Finished difference. Result has 196 places, 204 transitions, 2460 flow [2024-06-27 19:30:19,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2311, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2460, PETRI_PLACES=196, PETRI_TRANSITIONS=204} [2024-06-27 19:30:19,148 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 155 predicate places. [2024-06-27 19:30:19,148 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 204 transitions, 2460 flow [2024-06-27 19:30:19,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:19,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:19,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:19,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 19:30:19,148 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:19,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:19,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1456342583, now seen corresponding path program 9 times [2024-06-27 19:30:19,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:19,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453468159] [2024-06-27 19:30:19,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:19,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:19,223 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 19:30:19,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:19,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453468159] [2024-06-27 19:30:19,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453468159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:19,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:19,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:19,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009167050] [2024-06-27 19:30:19,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:19,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:19,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:19,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:19,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:19,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:19,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 204 transitions, 2460 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:19,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:19,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:19,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:19,624 INFO L124 PetriNetUnfolderBase]: 1782/3087 cut-off events. [2024-06-27 19:30:19,624 INFO L125 PetriNetUnfolderBase]: For 135870/135870 co-relation queries the response was YES. [2024-06-27 19:30:19,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19087 conditions, 3087 events. 1782/3087 cut-off events. For 135870/135870 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 19217 event pairs, 498 based on Foata normal form. 2/3086 useless extension candidates. Maximal degree in co-relation 18997. Up to 2635 conditions per place. [2024-06-27 19:30:19,652 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 159 selfloop transitions, 57 changer transitions 0/224 dead transitions. [2024-06-27 19:30:19,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 224 transitions, 3046 flow [2024-06-27 19:30:19,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:30:19,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:30:19,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-06-27 19:30:19,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-06-27 19:30:19,654 INFO L175 Difference]: Start difference. First operand has 196 places, 204 transitions, 2460 flow. Second operand 6 states and 156 transitions. [2024-06-27 19:30:19,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 224 transitions, 3046 flow [2024-06-27 19:30:19,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 224 transitions, 2819 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 19:30:19,919 INFO L231 Difference]: Finished difference. Result has 193 places, 204 transitions, 2362 flow [2024-06-27 19:30:19,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2237, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2362, PETRI_PLACES=193, PETRI_TRANSITIONS=204} [2024-06-27 19:30:19,919 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 152 predicate places. [2024-06-27 19:30:19,919 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 204 transitions, 2362 flow [2024-06-27 19:30:19,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:19,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:19,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:19,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 19:30:19,920 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:19,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:19,920 INFO L85 PathProgramCache]: Analyzing trace with hash 996582901, now seen corresponding path program 4 times [2024-06-27 19:30:19,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:19,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825973251] [2024-06-27 19:30:19,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:19,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:19,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:19,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:19,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825973251] [2024-06-27 19:30:19,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825973251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:19,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:19,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:19,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857797830] [2024-06-27 19:30:19,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:19,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:19,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:19,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:19,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:20,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:20,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 204 transitions, 2362 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:20,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:20,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:20,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:20,431 INFO L124 PetriNetUnfolderBase]: 1908/3304 cut-off events. [2024-06-27 19:30:20,432 INFO L125 PetriNetUnfolderBase]: For 159366/159366 co-relation queries the response was YES. [2024-06-27 19:30:20,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21272 conditions, 3304 events. 1908/3304 cut-off events. For 159366/159366 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 20864 event pairs, 526 based on Foata normal form. 2/3303 useless extension candidates. Maximal degree in co-relation 21182. Up to 2734 conditions per place. [2024-06-27 19:30:20,460 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 169 selfloop transitions, 59 changer transitions 0/236 dead transitions. [2024-06-27 19:30:20,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 236 transitions, 3125 flow [2024-06-27 19:30:20,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:30:20,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:30:20,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 19:30:20,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-27 19:30:20,461 INFO L175 Difference]: Start difference. First operand has 193 places, 204 transitions, 2362 flow. Second operand 7 states and 175 transitions. [2024-06-27 19:30:20,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 236 transitions, 3125 flow [2024-06-27 19:30:20,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 236 transitions, 2978 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 19:30:20,744 INFO L231 Difference]: Finished difference. Result has 194 places, 210 transitions, 2483 flow [2024-06-27 19:30:20,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2217, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2483, PETRI_PLACES=194, PETRI_TRANSITIONS=210} [2024-06-27 19:30:20,745 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 153 predicate places. [2024-06-27 19:30:20,745 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 210 transitions, 2483 flow [2024-06-27 19:30:20,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:20,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:20,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:20,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 19:30:20,745 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:20,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:20,746 INFO L85 PathProgramCache]: Analyzing trace with hash 2121742415, now seen corresponding path program 5 times [2024-06-27 19:30:20,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:20,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240523183] [2024-06-27 19:30:20,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:20,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:20,811 INFO 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 19:30:20,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:20,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240523183] [2024-06-27 19:30:20,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240523183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:20,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:20,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:20,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714284149] [2024-06-27 19:30:20,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:20,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:20,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:20,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:20,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:20,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:20,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 210 transitions, 2483 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:20,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:20,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:20,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:21,220 INFO L124 PetriNetUnfolderBase]: 1916/3322 cut-off events. [2024-06-27 19:30:21,220 INFO L125 PetriNetUnfolderBase]: For 160290/160290 co-relation queries the response was YES. [2024-06-27 19:30:21,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21623 conditions, 3322 events. 1916/3322 cut-off events. For 160290/160290 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 21068 event pairs, 534 based on Foata normal form. 2/3322 useless extension candidates. Maximal degree in co-relation 21532. Up to 2886 conditions per place. [2024-06-27 19:30:21,252 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 168 selfloop transitions, 54 changer transitions 0/230 dead transitions. [2024-06-27 19:30:21,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 230 transitions, 3017 flow [2024-06-27 19:30:21,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:30:21,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:30:21,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 19:30:21,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5964285714285714 [2024-06-27 19:30:21,254 INFO L175 Difference]: Start difference. First operand has 194 places, 210 transitions, 2483 flow. Second operand 7 states and 167 transitions. [2024-06-27 19:30:21,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 230 transitions, 3017 flow [2024-06-27 19:30:21,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 230 transitions, 2870 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-27 19:30:21,580 INFO L231 Difference]: Finished difference. Result has 197 places, 212 transitions, 2499 flow [2024-06-27 19:30:21,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2344, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2499, PETRI_PLACES=197, PETRI_TRANSITIONS=212} [2024-06-27 19:30:21,581 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 156 predicate places. [2024-06-27 19:30:21,581 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 212 transitions, 2499 flow [2024-06-27 19:30:21,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:21,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:21,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:21,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 19:30:21,581 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:21,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:21,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1765566543, now seen corresponding path program 6 times [2024-06-27 19:30:21,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:21,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690144548] [2024-06-27 19:30:21,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:21,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:21,647 INFO 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 19:30:21,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:21,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690144548] [2024-06-27 19:30:21,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690144548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:21,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:21,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:21,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448617014] [2024-06-27 19:30:21,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:21,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:21,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:21,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:21,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:21,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:21,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 212 transitions, 2499 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:21,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:21,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:21,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:22,096 INFO L124 PetriNetUnfolderBase]: 1924/3330 cut-off events. [2024-06-27 19:30:22,097 INFO L125 PetriNetUnfolderBase]: For 165349/165349 co-relation queries the response was YES. [2024-06-27 19:30:22,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21647 conditions, 3330 events. 1924/3330 cut-off events. For 165349/165349 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 20981 event pairs, 406 based on Foata normal form. 2/3330 useless extension candidates. Maximal degree in co-relation 21555. Up to 1941 conditions per place. [2024-06-27 19:30:22,138 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 159 selfloop transitions, 78 changer transitions 0/245 dead transitions. [2024-06-27 19:30:22,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 245 transitions, 3338 flow [2024-06-27 19:30:22,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:30:22,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:30:22,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-27 19:30:22,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6392857142857142 [2024-06-27 19:30:22,140 INFO L175 Difference]: Start difference. First operand has 197 places, 212 transitions, 2499 flow. Second operand 7 states and 179 transitions. [2024-06-27 19:30:22,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 245 transitions, 3338 flow [2024-06-27 19:30:22,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 245 transitions, 3211 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 19:30:22,506 INFO L231 Difference]: Finished difference. Result has 199 places, 214 transitions, 2570 flow [2024-06-27 19:30:22,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2372, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2570, PETRI_PLACES=199, PETRI_TRANSITIONS=214} [2024-06-27 19:30:22,507 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 158 predicate places. [2024-06-27 19:30:22,507 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 214 transitions, 2570 flow [2024-06-27 19:30:22,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:22,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:22,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:22,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 19:30:22,508 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:22,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:22,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1776994383, now seen corresponding path program 7 times [2024-06-27 19:30:22,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:22,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384493805] [2024-06-27 19:30:22,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:22,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:22,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:22,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:22,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384493805] [2024-06-27 19:30:22,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384493805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:22,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:22,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:22,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609233902] [2024-06-27 19:30:22,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:22,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:22,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:22,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:22,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:22,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:22,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 214 transitions, 2570 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:22,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:22,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:22,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:23,039 INFO L124 PetriNetUnfolderBase]: 1899/3283 cut-off events. [2024-06-27 19:30:23,039 INFO L125 PetriNetUnfolderBase]: For 170428/170428 co-relation queries the response was YES. [2024-06-27 19:30:23,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21509 conditions, 3283 events. 1899/3283 cut-off events. For 170428/170428 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 20666 event pairs, 444 based on Foata normal form. 8/3289 useless extension candidates. Maximal degree in co-relation 21416. Up to 1927 conditions per place. [2024-06-27 19:30:23,069 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 164 selfloop transitions, 70 changer transitions 0/242 dead transitions. [2024-06-27 19:30:23,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 242 transitions, 3248 flow [2024-06-27 19:30:23,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:30:23,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:30:23,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 19:30:23,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-06-27 19:30:23,070 INFO L175 Difference]: Start difference. First operand has 199 places, 214 transitions, 2570 flow. Second operand 7 states and 176 transitions. [2024-06-27 19:30:23,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 242 transitions, 3248 flow [2024-06-27 19:30:23,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 242 transitions, 3024 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-27 19:30:23,392 INFO L231 Difference]: Finished difference. Result has 200 places, 214 transitions, 2492 flow [2024-06-27 19:30:23,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2346, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2492, PETRI_PLACES=200, PETRI_TRANSITIONS=214} [2024-06-27 19:30:23,392 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 159 predicate places. [2024-06-27 19:30:23,392 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 214 transitions, 2492 flow [2024-06-27 19:30:23,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:23,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:23,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:23,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 19:30:23,393 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:23,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:23,393 INFO L85 PathProgramCache]: Analyzing trace with hash -894736907, now seen corresponding path program 8 times [2024-06-27 19:30:23,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:23,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106767660] [2024-06-27 19:30:23,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:23,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:23,455 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 19:30:23,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:23,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106767660] [2024-06-27 19:30:23,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106767660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:23,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:23,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:23,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065672203] [2024-06-27 19:30:23,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:23,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:23,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:23,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:23,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:23,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:23,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 214 transitions, 2492 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:23,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:23,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:23,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:23,856 INFO L124 PetriNetUnfolderBase]: 1876/3262 cut-off events. [2024-06-27 19:30:23,856 INFO L125 PetriNetUnfolderBase]: For 162406/162406 co-relation queries the response was YES. [2024-06-27 19:30:23,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20482 conditions, 3262 events. 1876/3262 cut-off events. For 162406/162406 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 20647 event pairs, 498 based on Foata normal form. 10/3270 useless extension candidates. Maximal degree in co-relation 20390. Up to 2558 conditions per place. [2024-06-27 19:30:23,885 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 174 selfloop transitions, 55 changer transitions 0/237 dead transitions. [2024-06-27 19:30:23,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 237 transitions, 3158 flow [2024-06-27 19:30:23,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:30:23,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:30:23,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-27 19:30:23,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2024-06-27 19:30:23,890 INFO L175 Difference]: Start difference. First operand has 200 places, 214 transitions, 2492 flow. Second operand 7 states and 172 transitions. [2024-06-27 19:30:23,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 237 transitions, 3158 flow [2024-06-27 19:30:24,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 237 transitions, 3000 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 19:30:24,224 INFO L231 Difference]: Finished difference. Result has 201 places, 214 transitions, 2451 flow [2024-06-27 19:30:24,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2334, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2451, PETRI_PLACES=201, PETRI_TRANSITIONS=214} [2024-06-27 19:30:24,225 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 160 predicate places. [2024-06-27 19:30:24,225 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 214 transitions, 2451 flow [2024-06-27 19:30:24,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:24,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:24,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:24,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 19:30:24,225 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:24,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:24,226 INFO L85 PathProgramCache]: Analyzing trace with hash 218994767, now seen corresponding path program 9 times [2024-06-27 19:30:24,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:24,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746509817] [2024-06-27 19:30:24,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:24,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:24,331 INFO 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 19:30:24,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:24,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746509817] [2024-06-27 19:30:24,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746509817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:24,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:24,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:24,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109678957] [2024-06-27 19:30:24,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:24,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:24,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:24,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:24,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:24,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:24,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 214 transitions, 2451 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:24,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:24,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:24,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:24,725 INFO L124 PetriNetUnfolderBase]: 1846/3216 cut-off events. [2024-06-27 19:30:24,725 INFO L125 PetriNetUnfolderBase]: For 151216/151216 co-relation queries the response was YES. [2024-06-27 19:30:24,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19521 conditions, 3216 events. 1846/3216 cut-off events. For 151216/151216 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 20395 event pairs, 504 based on Foata normal form. 10/3224 useless extension candidates. Maximal degree in co-relation 19428. Up to 2748 conditions per place. [2024-06-27 19:30:24,753 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 174 selfloop transitions, 50 changer transitions 0/232 dead transitions. [2024-06-27 19:30:24,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 232 transitions, 2965 flow [2024-06-27 19:30:24,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:30:24,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:30:24,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-27 19:30:24,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-27 19:30:24,755 INFO L175 Difference]: Start difference. First operand has 201 places, 214 transitions, 2451 flow. Second operand 7 states and 168 transitions. [2024-06-27 19:30:24,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 232 transitions, 2965 flow [2024-06-27 19:30:25,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 232 transitions, 2850 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-27 19:30:25,236 INFO L231 Difference]: Finished difference. Result has 204 places, 214 transitions, 2442 flow [2024-06-27 19:30:25,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2336, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2442, PETRI_PLACES=204, PETRI_TRANSITIONS=214} [2024-06-27 19:30:25,237 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 163 predicate places. [2024-06-27 19:30:25,237 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 214 transitions, 2442 flow [2024-06-27 19:30:25,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:25,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:25,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:25,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 19:30:25,237 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:25,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:25,237 INFO L85 PathProgramCache]: Analyzing trace with hash -787481231, now seen corresponding path program 10 times [2024-06-27 19:30:25,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:25,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029413163] [2024-06-27 19:30:25,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:25,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:25,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:25,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:25,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:25,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029413163] [2024-06-27 19:30:25,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029413163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:25,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:25,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:25,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349872103] [2024-06-27 19:30:25,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:25,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:25,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:25,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:25,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:25,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:25,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 214 transitions, 2442 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:25,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:25,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:25,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:25,809 INFO L124 PetriNetUnfolderBase]: 1823/3180 cut-off events. [2024-06-27 19:30:25,809 INFO L125 PetriNetUnfolderBase]: For 139065/139065 co-relation queries the response was YES. [2024-06-27 19:30:25,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18655 conditions, 3180 events. 1823/3180 cut-off events. For 139065/139065 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 20127 event pairs, 474 based on Foata normal form. 10/3186 useless extension candidates. Maximal degree in co-relation 18561. Up to 2589 conditions per place. [2024-06-27 19:30:25,837 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 184 selfloop transitions, 58 changer transitions 0/250 dead transitions. [2024-06-27 19:30:25,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 250 transitions, 3048 flow [2024-06-27 19:30:25,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:30:25,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:30:25,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-27 19:30:25,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.653125 [2024-06-27 19:30:25,839 INFO L175 Difference]: Start difference. First operand has 204 places, 214 transitions, 2442 flow. Second operand 8 states and 209 transitions. [2024-06-27 19:30:25,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 250 transitions, 3048 flow [2024-06-27 19:30:26,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 250 transitions, 2896 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 19:30:26,154 INFO L231 Difference]: Finished difference. Result has 205 places, 214 transitions, 2421 flow [2024-06-27 19:30:26,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2290, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2421, PETRI_PLACES=205, PETRI_TRANSITIONS=214} [2024-06-27 19:30:26,156 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 164 predicate places. [2024-06-27 19:30:26,157 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 214 transitions, 2421 flow [2024-06-27 19:30:26,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:26,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:26,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:26,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 19:30:26,157 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:26,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:26,158 INFO L85 PathProgramCache]: Analyzing trace with hash -559580081, now seen corresponding path program 11 times [2024-06-27 19:30:26,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:26,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149780003] [2024-06-27 19:30:26,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:26,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:26,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:26,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:26,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149780003] [2024-06-27 19:30:26,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149780003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:26,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:26,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:26,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661009727] [2024-06-27 19:30:26,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:26,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:26,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:26,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:26,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:26,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:26,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 214 transitions, 2421 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:26,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:26,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:26,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:26,652 INFO L124 PetriNetUnfolderBase]: 1800/3140 cut-off events. [2024-06-27 19:30:26,653 INFO L125 PetriNetUnfolderBase]: For 125510/125510 co-relation queries the response was YES. [2024-06-27 19:30:26,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17851 conditions, 3140 events. 1800/3140 cut-off events. For 125510/125510 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 19913 event pairs, 489 based on Foata normal form. 10/3147 useless extension candidates. Maximal degree in co-relation 17756. Up to 2654 conditions per place. [2024-06-27 19:30:26,680 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 181 selfloop transitions, 48 changer transitions 0/237 dead transitions. [2024-06-27 19:30:26,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 237 transitions, 2959 flow [2024-06-27 19:30:26,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:30:26,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:30:26,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-27 19:30:26,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6541666666666667 [2024-06-27 19:30:26,681 INFO L175 Difference]: Start difference. First operand has 205 places, 214 transitions, 2421 flow. Second operand 6 states and 157 transitions. [2024-06-27 19:30:26,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 237 transitions, 2959 flow [2024-06-27 19:30:27,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 237 transitions, 2838 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 19:30:27,037 INFO L231 Difference]: Finished difference. Result has 205 places, 214 transitions, 2405 flow [2024-06-27 19:30:27,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2300, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2405, PETRI_PLACES=205, PETRI_TRANSITIONS=214} [2024-06-27 19:30:27,037 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 164 predicate places. [2024-06-27 19:30:27,037 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 214 transitions, 2405 flow [2024-06-27 19:30:27,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:27,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:27,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:27,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 19:30:27,038 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:27,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:27,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1456588537, now seen corresponding path program 12 times [2024-06-27 19:30:27,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:27,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554421773] [2024-06-27 19:30:27,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:27,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:27,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:27,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:27,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:27,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554421773] [2024-06-27 19:30:27,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554421773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:27,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:27,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:27,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301828637] [2024-06-27 19:30:27,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:27,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:27,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:27,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:27,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:27,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:27,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 214 transitions, 2405 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:27,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:27,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:27,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:27,619 INFO L124 PetriNetUnfolderBase]: 1770/3089 cut-off events. [2024-06-27 19:30:27,619 INFO L125 PetriNetUnfolderBase]: For 108289/108289 co-relation queries the response was YES. [2024-06-27 19:30:27,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16926 conditions, 3089 events. 1770/3089 cut-off events. For 108289/108289 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 19543 event pairs, 376 based on Foata normal form. 10/3096 useless extension candidates. Maximal degree in co-relation 16830. Up to 2139 conditions per place. [2024-06-27 19:30:27,644 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 175 selfloop transitions, 60 changer transitions 0/243 dead transitions. [2024-06-27 19:30:27,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 243 transitions, 3001 flow [2024-06-27 19:30:27,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:30:27,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:30:27,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2024-06-27 19:30:27,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-06-27 19:30:27,646 INFO L175 Difference]: Start difference. First operand has 205 places, 214 transitions, 2405 flow. Second operand 6 states and 162 transitions. [2024-06-27 19:30:27,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 243 transitions, 3001 flow [2024-06-27 19:30:27,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 243 transitions, 2882 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 19:30:27,962 INFO L231 Difference]: Finished difference. Result has 206 places, 214 transitions, 2417 flow [2024-06-27 19:30:27,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2286, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2417, PETRI_PLACES=206, PETRI_TRANSITIONS=214} [2024-06-27 19:30:27,963 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 165 predicate places. [2024-06-27 19:30:27,963 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 214 transitions, 2417 flow [2024-06-27 19:30:27,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:27,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:27,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:27,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 19:30:27,964 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:27,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:27,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1636320359, now seen corresponding path program 1 times [2024-06-27 19:30:27,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:27,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950070349] [2024-06-27 19:30:27,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:27,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:28,027 INFO 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 19:30:28,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:28,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950070349] [2024-06-27 19:30:28,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950070349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:28,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:28,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:28,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128148492] [2024-06-27 19:30:28,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:28,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:28,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:28,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:28,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:28,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:28,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 214 transitions, 2417 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:28,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:28,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:28,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:28,467 INFO L124 PetriNetUnfolderBase]: 1775/3098 cut-off events. [2024-06-27 19:30:28,467 INFO L125 PetriNetUnfolderBase]: For 97263/97263 co-relation queries the response was YES. [2024-06-27 19:30:28,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17114 conditions, 3098 events. 1775/3098 cut-off events. For 97263/97263 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 19594 event pairs, 483 based on Foata normal form. 1/3096 useless extension candidates. Maximal degree in co-relation 17017. Up to 2640 conditions per place. [2024-06-27 19:30:28,499 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 161 selfloop transitions, 61 changer transitions 0/230 dead transitions. [2024-06-27 19:30:28,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 230 transitions, 2929 flow [2024-06-27 19:30:28,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:30:28,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:30:28,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-27 19:30:28,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-27 19:30:28,501 INFO L175 Difference]: Start difference. First operand has 206 places, 214 transitions, 2417 flow. Second operand 6 states and 150 transitions. [2024-06-27 19:30:28,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 230 transitions, 2929 flow [2024-06-27 19:30:28,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 230 transitions, 2725 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 19:30:28,844 INFO L231 Difference]: Finished difference. Result has 205 places, 217 transitions, 2391 flow [2024-06-27 19:30:28,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2213, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2391, PETRI_PLACES=205, PETRI_TRANSITIONS=217} [2024-06-27 19:30:28,844 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 164 predicate places. [2024-06-27 19:30:28,845 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 217 transitions, 2391 flow [2024-06-27 19:30:28,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:28,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:28,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:28,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 19:30:28,845 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:28,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:28,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1716249121, now seen corresponding path program 2 times [2024-06-27 19:30:28,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:28,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617677373] [2024-06-27 19:30:28,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:28,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:28,900 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 19:30:28,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:28,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617677373] [2024-06-27 19:30:28,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617677373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:28,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:28,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:28,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412851896] [2024-06-27 19:30:28,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:28,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:28,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:28,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:28,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:28,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:28,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 217 transitions, 2391 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:28,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:28,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:28,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:29,273 INFO L124 PetriNetUnfolderBase]: 1780/3107 cut-off events. [2024-06-27 19:30:29,273 INFO L125 PetriNetUnfolderBase]: For 97596/97596 co-relation queries the response was YES. [2024-06-27 19:30:29,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16872 conditions, 3107 events. 1780/3107 cut-off events. For 97596/97596 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 19689 event pairs, 483 based on Foata normal form. 1/3105 useless extension candidates. Maximal degree in co-relation 16774. Up to 2569 conditions per place. [2024-06-27 19:30:29,300 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 143 selfloop transitions, 87 changer transitions 0/238 dead transitions. [2024-06-27 19:30:29,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 238 transitions, 3055 flow [2024-06-27 19:30:29,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:30:29,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:30:29,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 19:30:29,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-06-27 19:30:29,301 INFO L175 Difference]: Start difference. First operand has 205 places, 217 transitions, 2391 flow. Second operand 7 states and 170 transitions. [2024-06-27 19:30:29,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 238 transitions, 3055 flow [2024-06-27 19:30:29,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 238 transitions, 2919 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 19:30:29,742 INFO L231 Difference]: Finished difference. Result has 207 places, 220 transitions, 2480 flow [2024-06-27 19:30:29,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2257, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2480, PETRI_PLACES=207, PETRI_TRANSITIONS=220} [2024-06-27 19:30:29,743 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 166 predicate places. [2024-06-27 19:30:29,743 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 220 transitions, 2480 flow [2024-06-27 19:30:29,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:29,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:29,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:29,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 19:30:29,743 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:29,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:29,744 INFO L85 PathProgramCache]: Analyzing trace with hash 35602363, now seen corresponding path program 3 times [2024-06-27 19:30:29,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:29,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374633703] [2024-06-27 19:30:29,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:29,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:29,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:29,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:29,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374633703] [2024-06-27 19:30:29,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374633703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:29,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:29,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:29,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533712722] [2024-06-27 19:30:29,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:29,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:29,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:29,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:29,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:29,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:29,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 220 transitions, 2480 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:29,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:29,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:29,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:30,183 INFO L124 PetriNetUnfolderBase]: 1785/3116 cut-off events. [2024-06-27 19:30:30,184 INFO L125 PetriNetUnfolderBase]: For 98094/98094 co-relation queries the response was YES. [2024-06-27 19:30:30,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16996 conditions, 3116 events. 1785/3116 cut-off events. For 98094/98094 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 19724 event pairs, 483 based on Foata normal form. 1/3114 useless extension candidates. Maximal degree in co-relation 16898. Up to 2575 conditions per place. [2024-06-27 19:30:30,211 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 143 selfloop transitions, 88 changer transitions 0/239 dead transitions. [2024-06-27 19:30:30,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 239 transitions, 3264 flow [2024-06-27 19:30:30,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:30:30,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:30:30,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 19:30:30,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-06-27 19:30:30,212 INFO L175 Difference]: Start difference. First operand has 207 places, 220 transitions, 2480 flow. Second operand 7 states and 170 transitions. [2024-06-27 19:30:30,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 239 transitions, 3264 flow [2024-06-27 19:30:30,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 239 transitions, 3048 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-27 19:30:30,591 INFO L231 Difference]: Finished difference. Result has 209 places, 223 transitions, 2496 flow [2024-06-27 19:30:30,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2273, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2496, PETRI_PLACES=209, PETRI_TRANSITIONS=223} [2024-06-27 19:30:30,592 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 168 predicate places. [2024-06-27 19:30:30,592 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 223 transitions, 2496 flow [2024-06-27 19:30:30,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:30,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:30,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:30,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 19:30:30,593 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:30,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:30,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1911905921, now seen corresponding path program 4 times [2024-06-27 19:30:30,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:30,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809561746] [2024-06-27 19:30:30,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:30,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:30,647 INFO 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 19:30:30,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:30,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809561746] [2024-06-27 19:30:30,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809561746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:30,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:30,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:30,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125894873] [2024-06-27 19:30:30,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:30,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:30,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:30,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:30,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:30,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:30,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 223 transitions, 2496 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:30,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:30,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:30,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:31,036 INFO L124 PetriNetUnfolderBase]: 1782/3112 cut-off events. [2024-06-27 19:30:31,036 INFO L125 PetriNetUnfolderBase]: For 99099/99099 co-relation queries the response was YES. [2024-06-27 19:30:31,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16822 conditions, 3112 events. 1782/3112 cut-off events. For 99099/99099 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 19674 event pairs, 483 based on Foata normal form. 1/3110 useless extension candidates. Maximal degree in co-relation 16724. Up to 2572 conditions per place. [2024-06-27 19:30:31,062 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 137 selfloop transitions, 93 changer transitions 0/238 dead transitions. [2024-06-27 19:30:31,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 238 transitions, 3112 flow [2024-06-27 19:30:31,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:30:31,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:30:31,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 19:30:31,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-06-27 19:30:31,064 INFO L175 Difference]: Start difference. First operand has 209 places, 223 transitions, 2496 flow. Second operand 7 states and 170 transitions. [2024-06-27 19:30:31,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 238 transitions, 3112 flow [2024-06-27 19:30:31,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 238 transitions, 2923 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-27 19:30:31,368 INFO L231 Difference]: Finished difference. Result has 212 places, 223 transitions, 2499 flow [2024-06-27 19:30:31,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2307, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2499, PETRI_PLACES=212, PETRI_TRANSITIONS=223} [2024-06-27 19:30:31,369 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 171 predicate places. [2024-06-27 19:30:31,369 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 223 transitions, 2499 flow [2024-06-27 19:30:31,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:31,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:31,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:31,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 19:30:31,369 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:31,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:31,370 INFO L85 PathProgramCache]: Analyzing trace with hash 449925653, now seen corresponding path program 5 times [2024-06-27 19:30:31,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:31,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056449625] [2024-06-27 19:30:31,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:31,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:31,426 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 19:30:31,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:31,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056449625] [2024-06-27 19:30:31,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056449625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:31,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:31,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:31,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233119269] [2024-06-27 19:30:31,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:31,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:31,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:31,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:31,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:31,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:31,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 223 transitions, 2499 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:31,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:31,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:31,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:31,813 INFO L124 PetriNetUnfolderBase]: 1787/3121 cut-off events. [2024-06-27 19:30:31,813 INFO L125 PetriNetUnfolderBase]: For 101958/101958 co-relation queries the response was YES. [2024-06-27 19:30:31,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16908 conditions, 3121 events. 1787/3121 cut-off events. For 101958/101958 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 19812 event pairs, 481 based on Foata normal form. 1/3119 useless extension candidates. Maximal degree in co-relation 16809. Up to 2642 conditions per place. [2024-06-27 19:30:31,841 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 168 selfloop transitions, 66 changer transitions 0/242 dead transitions. [2024-06-27 19:30:31,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 242 transitions, 3170 flow [2024-06-27 19:30:31,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:30:31,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:30:31,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-27 19:30:31,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.584375 [2024-06-27 19:30:31,842 INFO L175 Difference]: Start difference. First operand has 212 places, 223 transitions, 2499 flow. Second operand 8 states and 187 transitions. [2024-06-27 19:30:31,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 242 transitions, 3170 flow [2024-06-27 19:30:32,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 242 transitions, 2806 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 19:30:32,212 INFO L231 Difference]: Finished difference. Result has 211 places, 226 transitions, 2316 flow [2024-06-27 19:30:32,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2147, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2316, PETRI_PLACES=211, PETRI_TRANSITIONS=226} [2024-06-27 19:30:32,213 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 170 predicate places. [2024-06-27 19:30:32,213 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 226 transitions, 2316 flow [2024-06-27 19:30:32,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:32,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:32,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:32,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 19:30:32,214 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:32,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:32,214 INFO L85 PathProgramCache]: Analyzing trace with hash 250623863, now seen corresponding path program 6 times [2024-06-27 19:30:32,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:32,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298156686] [2024-06-27 19:30:32,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:32,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:32,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:32,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:32,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298156686] [2024-06-27 19:30:32,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298156686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:32,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:32,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:32,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213953698] [2024-06-27 19:30:32,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:32,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:32,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:32,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:32,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:32,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:32,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 226 transitions, 2316 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:32,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:32,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:32,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:32,643 INFO L124 PetriNetUnfolderBase]: 1792/3130 cut-off events. [2024-06-27 19:30:32,643 INFO L125 PetriNetUnfolderBase]: For 103514/103514 co-relation queries the response was YES. [2024-06-27 19:30:32,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16836 conditions, 3130 events. 1792/3130 cut-off events. For 103514/103514 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 19883 event pairs, 483 based on Foata normal form. 1/3128 useless extension candidates. Maximal degree in co-relation 16737. Up to 2648 conditions per place. [2024-06-27 19:30:32,670 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 171 selfloop transitions, 64 changer transitions 0/243 dead transitions. [2024-06-27 19:30:32,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 243 transitions, 2981 flow [2024-06-27 19:30:32,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:30:32,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:30:32,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-27 19:30:32,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-06-27 19:30:32,671 INFO L175 Difference]: Start difference. First operand has 211 places, 226 transitions, 2316 flow. Second operand 6 states and 148 transitions. [2024-06-27 19:30:32,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 243 transitions, 2981 flow [2024-06-27 19:30:33,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 243 transitions, 2810 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 19:30:33,089 INFO L231 Difference]: Finished difference. Result has 211 places, 229 transitions, 2316 flow [2024-06-27 19:30:33,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2155, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2316, PETRI_PLACES=211, PETRI_TRANSITIONS=229} [2024-06-27 19:30:33,090 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 170 predicate places. [2024-06-27 19:30:33,090 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 229 transitions, 2316 flow [2024-06-27 19:30:33,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:33,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:33,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:33,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 19:30:33,091 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:33,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:33,091 INFO L85 PathProgramCache]: Analyzing trace with hash 250267673, now seen corresponding path program 7 times [2024-06-27 19:30:33,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:33,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881554439] [2024-06-27 19:30:33,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:33,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:33,147 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 19:30:33,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:33,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881554439] [2024-06-27 19:30:33,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881554439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:33,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:33,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:33,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180722738] [2024-06-27 19:30:33,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:33,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:33,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:33,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:33,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:33,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:33,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 229 transitions, 2316 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:33,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:33,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:33,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:33,534 INFO L124 PetriNetUnfolderBase]: 1789/3126 cut-off events. [2024-06-27 19:30:33,534 INFO L125 PetriNetUnfolderBase]: For 104272/104272 co-relation queries the response was YES. [2024-06-27 19:30:33,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16764 conditions, 3126 events. 1789/3126 cut-off events. For 104272/104272 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 19877 event pairs, 483 based on Foata normal form. 1/3124 useless extension candidates. Maximal degree in co-relation 16664. Up to 2645 conditions per place. [2024-06-27 19:30:33,561 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 172 selfloop transitions, 65 changer transitions 0/245 dead transitions. [2024-06-27 19:30:33,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 245 transitions, 2830 flow [2024-06-27 19:30:33,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:30:33,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:30:33,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-27 19:30:33,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-27 19:30:33,563 INFO L175 Difference]: Start difference. First operand has 211 places, 229 transitions, 2316 flow. Second operand 6 states and 150 transitions. [2024-06-27 19:30:33,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 245 transitions, 2830 flow [2024-06-27 19:30:34,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 245 transitions, 2680 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 19:30:34,016 INFO L231 Difference]: Finished difference. Result has 213 places, 229 transitions, 2304 flow [2024-06-27 19:30:34,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2166, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2304, PETRI_PLACES=213, PETRI_TRANSITIONS=229} [2024-06-27 19:30:34,016 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 172 predicate places. [2024-06-27 19:30:34,016 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 229 transitions, 2304 flow [2024-06-27 19:30:34,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:34,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:34,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:34,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 19:30:34,017 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:34,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:34,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1724978375, now seen corresponding path program 1 times [2024-06-27 19:30:34,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:34,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137578761] [2024-06-27 19:30:34,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:34,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:34,077 INFO 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 19:30:34,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:34,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137578761] [2024-06-27 19:30:34,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137578761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:34,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:34,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:34,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218597099] [2024-06-27 19:30:34,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:34,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:34,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:34,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:34,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:34,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:34,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 229 transitions, 2304 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:34,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:34,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:34,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:34,467 INFO L124 PetriNetUnfolderBase]: 1809/3156 cut-off events. [2024-06-27 19:30:34,467 INFO L125 PetriNetUnfolderBase]: For 117460/117460 co-relation queries the response was YES. [2024-06-27 19:30:34,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16945 conditions, 3156 events. 1809/3156 cut-off events. For 117460/117460 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 19980 event pairs, 369 based on Foata normal form. 6/3159 useless extension candidates. Maximal degree in co-relation 16844. Up to 2568 conditions per place. [2024-06-27 19:30:34,496 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 222 selfloop transitions, 23 changer transitions 0/253 dead transitions. [2024-06-27 19:30:34,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 253 transitions, 3027 flow [2024-06-27 19:30:34,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:30:34,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:30:34,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-27 19:30:34,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-06-27 19:30:34,498 INFO L175 Difference]: Start difference. First operand has 213 places, 229 transitions, 2304 flow. Second operand 6 states and 148 transitions. [2024-06-27 19:30:34,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 253 transitions, 3027 flow [2024-06-27 19:30:34,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 253 transitions, 2842 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 19:30:34,927 INFO L231 Difference]: Finished difference. Result has 213 places, 230 transitions, 2182 flow [2024-06-27 19:30:34,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2119, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2182, PETRI_PLACES=213, PETRI_TRANSITIONS=230} [2024-06-27 19:30:34,927 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 172 predicate places. [2024-06-27 19:30:34,927 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 230 transitions, 2182 flow [2024-06-27 19:30:34,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:34,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:34,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:34,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 19:30:34,928 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:34,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:34,928 INFO L85 PathProgramCache]: Analyzing trace with hash -635242223, now seen corresponding path program 2 times [2024-06-27 19:30:34,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:34,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483447509] [2024-06-27 19:30:34,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:34,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:34,989 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 19:30:34,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:34,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483447509] [2024-06-27 19:30:34,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483447509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:34,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:34,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:34,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719781474] [2024-06-27 19:30:34,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:34,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:34,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:34,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:34,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:35,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:35,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 230 transitions, 2182 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:35,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:35,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:35,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:35,378 INFO L124 PetriNetUnfolderBase]: 1796/3137 cut-off events. [2024-06-27 19:30:35,378 INFO L125 PetriNetUnfolderBase]: For 108125/108125 co-relation queries the response was YES. [2024-06-27 19:30:35,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16449 conditions, 3137 events. 1796/3137 cut-off events. For 108125/108125 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 19848 event pairs, 358 based on Foata normal form. 6/3140 useless extension candidates. Maximal degree in co-relation 16347. Up to 2562 conditions per place. [2024-06-27 19:30:35,406 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 218 selfloop transitions, 23 changer transitions 1/250 dead transitions. [2024-06-27 19:30:35,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 250 transitions, 2752 flow [2024-06-27 19:30:35,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:30:35,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:30:35,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-06-27 19:30:35,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-06-27 19:30:35,407 INFO L175 Difference]: Start difference. First operand has 213 places, 230 transitions, 2182 flow. Second operand 5 states and 128 transitions. [2024-06-27 19:30:35,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 250 transitions, 2752 flow [2024-06-27 19:30:35,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 250 transitions, 2696 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 19:30:35,813 INFO L231 Difference]: Finished difference. Result has 215 places, 230 transitions, 2178 flow [2024-06-27 19:30:35,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2126, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2178, PETRI_PLACES=215, PETRI_TRANSITIONS=230} [2024-06-27 19:30:35,813 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 174 predicate places. [2024-06-27 19:30:35,814 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 230 transitions, 2178 flow [2024-06-27 19:30:35,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:35,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:35,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:35,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 19:30:35,816 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:35,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:35,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1251364619, now seen corresponding path program 1 times [2024-06-27 19:30:35,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:35,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620604391] [2024-06-27 19:30:35,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:35,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:35,888 INFO 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 19:30:35,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:35,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620604391] [2024-06-27 19:30:35,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620604391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:35,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:35,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:35,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808162390] [2024-06-27 19:30:35,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:35,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:35,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:35,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:35,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:35,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:35,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 230 transitions, 2178 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:35,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:35,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:35,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:36,362 INFO L124 PetriNetUnfolderBase]: 1816/3182 cut-off events. [2024-06-27 19:30:36,362 INFO L125 PetriNetUnfolderBase]: For 111876/111876 co-relation queries the response was YES. [2024-06-27 19:30:36,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16608 conditions, 3182 events. 1816/3182 cut-off events. For 111876/111876 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 20262 event pairs, 321 based on Foata normal form. 6/3184 useless extension candidates. Maximal degree in co-relation 16506. Up to 2247 conditions per place. [2024-06-27 19:30:36,392 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 195 selfloop transitions, 70 changer transitions 1/274 dead transitions. [2024-06-27 19:30:36,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 274 transitions, 2910 flow [2024-06-27 19:30:36,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:30:36,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:30:36,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-27 19:30:36,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.665625 [2024-06-27 19:30:36,393 INFO L175 Difference]: Start difference. First operand has 215 places, 230 transitions, 2178 flow. Second operand 8 states and 213 transitions. [2024-06-27 19:30:36,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 274 transitions, 2910 flow [2024-06-27 19:30:36,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 274 transitions, 2837 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 19:30:36,828 INFO L231 Difference]: Finished difference. Result has 218 places, 233 transitions, 2329 flow [2024-06-27 19:30:36,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2108, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2329, PETRI_PLACES=218, PETRI_TRANSITIONS=233} [2024-06-27 19:30:36,828 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 177 predicate places. [2024-06-27 19:30:36,828 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 233 transitions, 2329 flow [2024-06-27 19:30:36,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:36,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:36,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:36,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 19:30:36,829 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:36,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:36,829 INFO L85 PathProgramCache]: Analyzing trace with hash -402144617, now seen corresponding path program 2 times [2024-06-27 19:30:36,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:36,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003255214] [2024-06-27 19:30:36,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:36,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:36,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:36,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:36,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003255214] [2024-06-27 19:30:36,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003255214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:36,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:36,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:36,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010225970] [2024-06-27 19:30:36,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:36,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:36,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:36,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:36,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:36,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:36,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 233 transitions, 2329 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:36,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:36,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:36,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:37,391 INFO L124 PetriNetUnfolderBase]: 1917/3360 cut-off events. [2024-06-27 19:30:37,392 INFO L125 PetriNetUnfolderBase]: For 146809/146809 co-relation queries the response was YES. [2024-06-27 19:30:37,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18749 conditions, 3360 events. 1917/3360 cut-off events. For 146809/146809 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 21535 event pairs, 330 based on Foata normal form. 6/3363 useless extension candidates. Maximal degree in co-relation 18647. Up to 1779 conditions per place. [2024-06-27 19:30:37,422 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 191 selfloop transitions, 71 changer transitions 0/270 dead transitions. [2024-06-27 19:30:37,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 270 transitions, 3292 flow [2024-06-27 19:30:37,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:30:37,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:30:37,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-27 19:30:37,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6642857142857143 [2024-06-27 19:30:37,424 INFO L175 Difference]: Start difference. First operand has 218 places, 233 transitions, 2329 flow. Second operand 7 states and 186 transitions. [2024-06-27 19:30:37,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 270 transitions, 3292 flow [2024-06-27 19:30:37,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 270 transitions, 3199 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 19:30:37,889 INFO L231 Difference]: Finished difference. Result has 221 places, 235 transitions, 2426 flow [2024-06-27 19:30:37,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2240, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2426, PETRI_PLACES=221, PETRI_TRANSITIONS=235} [2024-06-27 19:30:37,890 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 180 predicate places. [2024-06-27 19:30:37,890 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 235 transitions, 2426 flow [2024-06-27 19:30:37,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:37,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:37,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:37,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 19:30:37,891 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:37,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:37,891 INFO L85 PathProgramCache]: Analyzing trace with hash -401907467, now seen corresponding path program 3 times [2024-06-27 19:30:37,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:37,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780877409] [2024-06-27 19:30:37,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:37,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:37,977 INFO 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 19:30:37,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:37,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780877409] [2024-06-27 19:30:37,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780877409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:37,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:37,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:30:37,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666565386] [2024-06-27 19:30:37,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:37,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:30:37,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:37,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:30:37,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:30:38,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:38,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 235 transitions, 2426 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:38,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:38,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:38,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:38,460 INFO L124 PetriNetUnfolderBase]: 1904/3346 cut-off events. [2024-06-27 19:30:38,461 INFO L125 PetriNetUnfolderBase]: For 136632/136632 co-relation queries the response was YES. [2024-06-27 19:30:38,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18658 conditions, 3346 events. 1904/3346 cut-off events. For 136632/136632 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 21487 event pairs, 287 based on Foata normal form. 6/3349 useless extension candidates. Maximal degree in co-relation 18554. Up to 1773 conditions per place. [2024-06-27 19:30:38,494 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 194 selfloop transitions, 69 changer transitions 0/271 dead transitions. [2024-06-27 19:30:38,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 271 transitions, 3257 flow [2024-06-27 19:30:38,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:30:38,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:30:38,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-27 19:30:38,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6642857142857143 [2024-06-27 19:30:38,495 INFO L175 Difference]: Start difference. First operand has 221 places, 235 transitions, 2426 flow. Second operand 7 states and 186 transitions. [2024-06-27 19:30:38,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 271 transitions, 3257 flow [2024-06-27 19:30:39,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 271 transitions, 3030 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 19:30:39,102 INFO L231 Difference]: Finished difference. Result has 222 places, 236 transitions, 2362 flow [2024-06-27 19:30:39,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2208, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2362, PETRI_PLACES=222, PETRI_TRANSITIONS=236} [2024-06-27 19:30:39,102 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 181 predicate places. [2024-06-27 19:30:39,102 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 236 transitions, 2362 flow [2024-06-27 19:30:39,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:39,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:39,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:39,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 19:30:39,103 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:39,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:39,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1934905830, now seen corresponding path program 1 times [2024-06-27 19:30:39,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:39,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856387300] [2024-06-27 19:30:39,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:39,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:39,180 INFO 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 19:30:39,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:39,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856387300] [2024-06-27 19:30:39,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856387300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:39,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:39,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:30:39,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377092403] [2024-06-27 19:30:39,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:39,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:30:39,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:39,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:30:39,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:30:39,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:39,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 236 transitions, 2362 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:39,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:39,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:39,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:39,731 INFO L124 PetriNetUnfolderBase]: 2003/3502 cut-off events. [2024-06-27 19:30:39,731 INFO L125 PetriNetUnfolderBase]: For 172493/172493 co-relation queries the response was YES. [2024-06-27 19:30:39,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20294 conditions, 3502 events. 2003/3502 cut-off events. For 172493/172493 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 22555 event pairs, 418 based on Foata normal form. 6/3503 useless extension candidates. Maximal degree in co-relation 20191. Up to 2613 conditions per place. [2024-06-27 19:30:39,764 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 243 selfloop transitions, 34 changer transitions 4/289 dead transitions. [2024-06-27 19:30:39,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 289 transitions, 3458 flow [2024-06-27 19:30:39,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:30:39,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:30:39,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-27 19:30:39,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-06-27 19:30:39,765 INFO L175 Difference]: Start difference. First operand has 222 places, 236 transitions, 2362 flow. Second operand 9 states and 230 transitions. [2024-06-27 19:30:39,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 289 transitions, 3458 flow [2024-06-27 19:30:40,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 289 transitions, 3362 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 19:30:40,167 INFO L231 Difference]: Finished difference. Result has 227 places, 239 transitions, 2418 flow [2024-06-27 19:30:40,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2266, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2418, PETRI_PLACES=227, PETRI_TRANSITIONS=239} [2024-06-27 19:30:40,167 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 186 predicate places. [2024-06-27 19:30:40,167 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 239 transitions, 2418 flow [2024-06-27 19:30:40,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:40,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:40,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:40,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 19:30:40,168 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:40,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:40,168 INFO L85 PathProgramCache]: Analyzing trace with hash 592846132, now seen corresponding path program 2 times [2024-06-27 19:30:40,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:40,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079739761] [2024-06-27 19:30:40,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:40,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:40,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:40,252 INFO 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 19:30:40,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:40,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079739761] [2024-06-27 19:30:40,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079739761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:40,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:40,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:30:40,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697784432] [2024-06-27 19:30:40,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:40,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:30:40,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:40,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:30:40,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:30:40,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:40,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 239 transitions, 2418 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:40,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:40,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:40,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:40,749 INFO L124 PetriNetUnfolderBase]: 1909/3345 cut-off events. [2024-06-27 19:30:40,749 INFO L125 PetriNetUnfolderBase]: For 122491/122491 co-relation queries the response was YES. [2024-06-27 19:30:40,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17994 conditions, 3345 events. 1909/3345 cut-off events. For 122491/122491 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 21434 event pairs, 413 based on Foata normal form. 6/3349 useless extension candidates. Maximal degree in co-relation 17890. Up to 2863 conditions per place. [2024-06-27 19:30:40,779 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 237 selfloop transitions, 26 changer transitions 2/273 dead transitions. [2024-06-27 19:30:40,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 273 transitions, 3054 flow [2024-06-27 19:30:40,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:30:40,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:30:40,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 19:30:40,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-06-27 19:30:40,780 INFO L175 Difference]: Start difference. First operand has 227 places, 239 transitions, 2418 flow. Second operand 8 states and 195 transitions. [2024-06-27 19:30:40,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 273 transitions, 3054 flow [2024-06-27 19:30:41,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 273 transitions, 2983 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-27 19:30:41,188 INFO L231 Difference]: Finished difference. Result has 231 places, 239 transitions, 2403 flow [2024-06-27 19:30:41,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2347, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2403, PETRI_PLACES=231, PETRI_TRANSITIONS=239} [2024-06-27 19:30:41,189 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 190 predicate places. [2024-06-27 19:30:41,189 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 239 transitions, 2403 flow [2024-06-27 19:30:41,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:41,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:41,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:41,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 19:30:41,190 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:41,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:41,190 INFO L85 PathProgramCache]: Analyzing trace with hash -829797434, now seen corresponding path program 3 times [2024-06-27 19:30:41,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:41,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149527415] [2024-06-27 19:30:41,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:41,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:41,282 INFO 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 19:30:41,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:41,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149527415] [2024-06-27 19:30:41,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149527415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:41,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:41,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:30:41,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101063621] [2024-06-27 19:30:41,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:41,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:30:41,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:41,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:30:41,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:30:41,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:41,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 239 transitions, 2403 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:41,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:41,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:41,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:41,763 INFO L124 PetriNetUnfolderBase]: 1937/3387 cut-off events. [2024-06-27 19:30:41,763 INFO L125 PetriNetUnfolderBase]: For 131458/131458 co-relation queries the response was YES. [2024-06-27 19:30:41,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18168 conditions, 3387 events. 1937/3387 cut-off events. For 131458/131458 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 21796 event pairs, 497 based on Foata normal form. 8/3391 useless extension candidates. Maximal degree in co-relation 18062. Up to 2801 conditions per place. [2024-06-27 19:30:41,795 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 243 selfloop transitions, 28 changer transitions 0/279 dead transitions. [2024-06-27 19:30:41,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 279 transitions, 3249 flow [2024-06-27 19:30:41,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:30:41,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:30:41,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-27 19:30:41,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.628125 [2024-06-27 19:30:41,796 INFO L175 Difference]: Start difference. First operand has 231 places, 239 transitions, 2403 flow. Second operand 8 states and 201 transitions. [2024-06-27 19:30:41,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 279 transitions, 3249 flow [2024-06-27 19:30:42,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 279 transitions, 3178 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 19:30:42,222 INFO L231 Difference]: Finished difference. Result has 231 places, 240 transitions, 2414 flow [2024-06-27 19:30:42,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2332, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2414, PETRI_PLACES=231, PETRI_TRANSITIONS=240} [2024-06-27 19:30:42,223 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 190 predicate places. [2024-06-27 19:30:42,223 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 240 transitions, 2414 flow [2024-06-27 19:30:42,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:42,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:42,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:42,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 19:30:42,223 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:42,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:42,224 INFO L85 PathProgramCache]: Analyzing trace with hash -687485114, now seen corresponding path program 4 times [2024-06-27 19:30:42,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:42,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83967457] [2024-06-27 19:30:42,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:42,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:42,294 INFO 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 19:30:42,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:42,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83967457] [2024-06-27 19:30:42,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83967457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:42,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:42,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:30:42,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766700109] [2024-06-27 19:30:42,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:42,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:30:42,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:42,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:30:42,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:30:42,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:42,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 240 transitions, 2414 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:42,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:42,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:42,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:42,792 INFO L124 PetriNetUnfolderBase]: 1919/3363 cut-off events. [2024-06-27 19:30:42,792 INFO L125 PetriNetUnfolderBase]: For 115508/115508 co-relation queries the response was YES. [2024-06-27 19:30:42,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17459 conditions, 3363 events. 1919/3363 cut-off events. For 115508/115508 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 21659 event pairs, 507 based on Foata normal form. 8/3369 useless extension candidates. Maximal degree in co-relation 17352. Up to 2929 conditions per place. [2024-06-27 19:30:42,823 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 236 selfloop transitions, 27 changer transitions 0/271 dead transitions. [2024-06-27 19:30:42,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 271 transitions, 3042 flow [2024-06-27 19:30:42,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:30:42,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:30:42,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 19:30:42,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.603125 [2024-06-27 19:30:42,824 INFO L175 Difference]: Start difference. First operand has 231 places, 240 transitions, 2414 flow. Second operand 8 states and 193 transitions. [2024-06-27 19:30:42,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 271 transitions, 3042 flow [2024-06-27 19:30:43,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 271 transitions, 2965 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 19:30:43,184 INFO L231 Difference]: Finished difference. Result has 233 places, 240 transitions, 2396 flow [2024-06-27 19:30:43,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2337, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2396, PETRI_PLACES=233, PETRI_TRANSITIONS=240} [2024-06-27 19:30:43,184 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 192 predicate places. [2024-06-27 19:30:43,184 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 240 transitions, 2396 flow [2024-06-27 19:30:43,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:43,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:43,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:43,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 19:30:43,185 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:43,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:43,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1248731172, now seen corresponding path program 5 times [2024-06-27 19:30:43,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:43,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762485967] [2024-06-27 19:30:43,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:43,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:43,249 INFO 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 19:30:43,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:43,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762485967] [2024-06-27 19:30:43,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762485967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:43,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:43,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:30:43,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601274286] [2024-06-27 19:30:43,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:43,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:30:43,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:43,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:30:43,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:30:43,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:43,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 240 transitions, 2396 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:43,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:43,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:43,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:43,816 INFO L124 PetriNetUnfolderBase]: 2120/3673 cut-off events. [2024-06-27 19:30:43,816 INFO L125 PetriNetUnfolderBase]: For 203908/203908 co-relation queries the response was YES. [2024-06-27 19:30:43,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21381 conditions, 3673 events. 2120/3673 cut-off events. For 203908/203908 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 23711 event pairs, 615 based on Foata normal form. 8/3672 useless extension candidates. Maximal degree in co-relation 21273. Up to 2701 conditions per place. [2024-06-27 19:30:43,851 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 161 selfloop transitions, 111 changer transitions 0/280 dead transitions. [2024-06-27 19:30:43,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 280 transitions, 3282 flow [2024-06-27 19:30:43,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:30:43,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:30:43,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-27 19:30:43,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.653125 [2024-06-27 19:30:43,852 INFO L175 Difference]: Start difference. First operand has 233 places, 240 transitions, 2396 flow. Second operand 8 states and 209 transitions. [2024-06-27 19:30:43,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 280 transitions, 3282 flow [2024-06-27 19:30:44,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 280 transitions, 3206 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 19:30:44,515 INFO L231 Difference]: Finished difference. Result has 233 places, 242 transitions, 2600 flow [2024-06-27 19:30:44,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2320, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2600, PETRI_PLACES=233, PETRI_TRANSITIONS=242} [2024-06-27 19:30:44,515 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 192 predicate places. [2024-06-27 19:30:44,515 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 242 transitions, 2600 flow [2024-06-27 19:30:44,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:44,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:44,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:44,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 19:30:44,516 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:44,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:44,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1562643148, now seen corresponding path program 6 times [2024-06-27 19:30:44,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:44,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708295964] [2024-06-27 19:30:44,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:44,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:44,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:44,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:44,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708295964] [2024-06-27 19:30:44,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708295964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:44,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:44,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:30:44,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383371699] [2024-06-27 19:30:44,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:44,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:30:44,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:44,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:30:44,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:30:44,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:44,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 242 transitions, 2600 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:44,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:44,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:44,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:45,109 INFO L124 PetriNetUnfolderBase]: 2148/3717 cut-off events. [2024-06-27 19:30:45,109 INFO L125 PetriNetUnfolderBase]: For 211402/211402 co-relation queries the response was YES. [2024-06-27 19:30:45,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21965 conditions, 3717 events. 2148/3717 cut-off events. For 211402/211402 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 24004 event pairs, 635 based on Foata normal form. 8/3716 useless extension candidates. Maximal degree in co-relation 21857. Up to 3122 conditions per place. [2024-06-27 19:30:45,147 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 153 selfloop transitions, 110 changer transitions 0/271 dead transitions. [2024-06-27 19:30:45,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 271 transitions, 3248 flow [2024-06-27 19:30:45,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:30:45,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:30:45,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-27 19:30:45,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-27 19:30:45,148 INFO L175 Difference]: Start difference. First operand has 233 places, 242 transitions, 2600 flow. Second operand 8 states and 200 transitions. [2024-06-27 19:30:45,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 271 transitions, 3248 flow [2024-06-27 19:30:45,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 271 transitions, 3070 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-27 19:30:45,833 INFO L231 Difference]: Finished difference. Result has 237 places, 243 transitions, 2677 flow [2024-06-27 19:30:45,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2432, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2677, PETRI_PLACES=237, PETRI_TRANSITIONS=243} [2024-06-27 19:30:45,834 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 196 predicate places. [2024-06-27 19:30:45,834 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 243 transitions, 2677 flow [2024-06-27 19:30:45,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:45,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:45,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:45,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 19:30:45,835 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:45,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:45,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1000782540, now seen corresponding path program 7 times [2024-06-27 19:30:45,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:45,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530930873] [2024-06-27 19:30:45,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:45,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:45,905 INFO 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 19:30:45,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:45,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530930873] [2024-06-27 19:30:45,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530930873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:45,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:45,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:30:45,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854730003] [2024-06-27 19:30:45,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:45,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:30:45,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:45,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:30:45,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:30:45,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:45,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 243 transitions, 2677 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:45,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:45,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:45,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:46,413 INFO L124 PetriNetUnfolderBase]: 2176/3761 cut-off events. [2024-06-27 19:30:46,413 INFO L125 PetriNetUnfolderBase]: For 215105/215105 co-relation queries the response was YES. [2024-06-27 19:30:46,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22262 conditions, 3761 events. 2176/3761 cut-off events. For 215105/215105 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 24296 event pairs, 639 based on Foata normal form. 8/3760 useless extension candidates. Maximal degree in co-relation 22152. Up to 3166 conditions per place. [2024-06-27 19:30:46,450 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 152 selfloop transitions, 109 changer transitions 0/269 dead transitions. [2024-06-27 19:30:46,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 269 transitions, 3305 flow [2024-06-27 19:30:46,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:30:46,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:30:46,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 19:30:46,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6125 [2024-06-27 19:30:46,451 INFO L175 Difference]: Start difference. First operand has 237 places, 243 transitions, 2677 flow. Second operand 8 states and 196 transitions. [2024-06-27 19:30:46,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 269 transitions, 3305 flow [2024-06-27 19:30:47,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 269 transitions, 3082 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 19:30:47,126 INFO L231 Difference]: Finished difference. Result has 239 places, 244 transitions, 2699 flow [2024-06-27 19:30:47,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2454, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2699, PETRI_PLACES=239, PETRI_TRANSITIONS=244} [2024-06-27 19:30:47,127 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 198 predicate places. [2024-06-27 19:30:47,127 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 244 transitions, 2699 flow [2024-06-27 19:30:47,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:47,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:47,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:47,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 19:30:47,128 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:47,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:47,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1609700044, now seen corresponding path program 8 times [2024-06-27 19:30:47,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:47,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3470849] [2024-06-27 19:30:47,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:47,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:47,200 INFO 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 19:30:47,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:47,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3470849] [2024-06-27 19:30:47,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3470849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:47,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:47,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:30:47,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087003379] [2024-06-27 19:30:47,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:47,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:30:47,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:47,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:30:47,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:30:47,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:47,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 244 transitions, 2699 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:47,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:47,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:47,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:47,733 INFO L124 PetriNetUnfolderBase]: 2204/3814 cut-off events. [2024-06-27 19:30:47,734 INFO L125 PetriNetUnfolderBase]: For 221248/221248 co-relation queries the response was YES. [2024-06-27 19:30:47,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22629 conditions, 3814 events. 2204/3814 cut-off events. For 221248/221248 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 24774 event pairs, 624 based on Foata normal form. 8/3820 useless extension candidates. Maximal degree in co-relation 22518. Up to 3386 conditions per place. [2024-06-27 19:30:47,771 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 233 selfloop transitions, 27 changer transitions 0/268 dead transitions. [2024-06-27 19:30:47,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 268 transitions, 3327 flow [2024-06-27 19:30:47,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:30:47,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:30:47,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 19:30:47,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58125 [2024-06-27 19:30:47,772 INFO L175 Difference]: Start difference. First operand has 239 places, 244 transitions, 2699 flow. Second operand 8 states and 186 transitions. [2024-06-27 19:30:47,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 268 transitions, 3327 flow [2024-06-27 19:30:48,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 268 transitions, 3104 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 19:30:48,262 INFO L231 Difference]: Finished difference. Result has 241 places, 245 transitions, 2559 flow [2024-06-27 19:30:48,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2476, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2559, PETRI_PLACES=241, PETRI_TRANSITIONS=245} [2024-06-27 19:30:48,263 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 200 predicate places. [2024-06-27 19:30:48,263 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 245 transitions, 2559 flow [2024-06-27 19:30:48,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:48,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:48,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:48,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 19:30:48,264 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:48,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:48,264 INFO L85 PathProgramCache]: Analyzing trace with hash 545794196, now seen corresponding path program 1 times [2024-06-27 19:30:48,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:48,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127577263] [2024-06-27 19:30:48,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:48,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:48,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:48,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:48,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127577263] [2024-06-27 19:30:48,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127577263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:48,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:48,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:30:48,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361712284] [2024-06-27 19:30:48,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:48,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:30:48,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:48,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:30:48,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:30:48,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:48,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 245 transitions, 2559 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:48,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:48,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:48,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:48,933 INFO L124 PetriNetUnfolderBase]: 2371/4086 cut-off events. [2024-06-27 19:30:48,933 INFO L125 PetriNetUnfolderBase]: For 304554/304554 co-relation queries the response was YES. [2024-06-27 19:30:48,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25996 conditions, 4086 events. 2371/4086 cut-off events. For 304554/304554 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 26743 event pairs, 640 based on Foata normal form. 6/4075 useless extension candidates. Maximal degree in co-relation 25884. Up to 2422 conditions per place. [2024-06-27 19:30:48,975 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 160 selfloop transitions, 123 changer transitions 0/291 dead transitions. [2024-06-27 19:30:48,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 291 transitions, 3657 flow [2024-06-27 19:30:48,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:30:48,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:30:48,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-27 19:30:48,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.665625 [2024-06-27 19:30:48,976 INFO L175 Difference]: Start difference. First operand has 241 places, 245 transitions, 2559 flow. Second operand 8 states and 213 transitions. [2024-06-27 19:30:48,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 291 transitions, 3657 flow [2024-06-27 19:30:49,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 291 transitions, 3596 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 19:30:49,756 INFO L231 Difference]: Finished difference. Result has 243 places, 247 transitions, 2806 flow [2024-06-27 19:30:49,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2498, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2806, PETRI_PLACES=243, PETRI_TRANSITIONS=247} [2024-06-27 19:30:49,756 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 202 predicate places. [2024-06-27 19:30:49,757 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 247 transitions, 2806 flow [2024-06-27 19:30:49,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:49,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:49,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:49,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 19:30:49,757 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:49,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:49,757 INFO L85 PathProgramCache]: Analyzing trace with hash 555317396, now seen corresponding path program 2 times [2024-06-27 19:30:49,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:49,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019752068] [2024-06-27 19:30:49,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:49,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:49,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:49,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:49,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019752068] [2024-06-27 19:30:49,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019752068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:49,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:49,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:30:49,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669739490] [2024-06-27 19:30:49,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:49,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:30:49,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:49,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:30:49,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:30:49,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:49,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 247 transitions, 2806 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:49,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:49,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:49,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:50,443 INFO L124 PetriNetUnfolderBase]: 2391/4116 cut-off events. [2024-06-27 19:30:50,444 INFO L125 PetriNetUnfolderBase]: For 315900/315900 co-relation queries the response was YES. [2024-06-27 19:30:50,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26720 conditions, 4116 events. 2391/4116 cut-off events. For 315900/315900 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 26949 event pairs, 702 based on Foata normal form. 6/4105 useless extension candidates. Maximal degree in co-relation 26607. Up to 2434 conditions per place. [2024-06-27 19:30:50,487 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 155 selfloop transitions, 123 changer transitions 0/286 dead transitions. [2024-06-27 19:30:50,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 286 transitions, 3700 flow [2024-06-27 19:30:50,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:30:50,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:30:50,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-27 19:30:50,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.646875 [2024-06-27 19:30:50,488 INFO L175 Difference]: Start difference. First operand has 243 places, 247 transitions, 2806 flow. Second operand 8 states and 207 transitions. [2024-06-27 19:30:50,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 286 transitions, 3700 flow [2024-06-27 19:30:51,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 286 transitions, 3416 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 19:30:51,451 INFO L231 Difference]: Finished difference. Result has 246 places, 248 transitions, 2802 flow [2024-06-27 19:30:51,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2534, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2802, PETRI_PLACES=246, PETRI_TRANSITIONS=248} [2024-06-27 19:30:51,451 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 205 predicate places. [2024-06-27 19:30:51,451 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 248 transitions, 2802 flow [2024-06-27 19:30:51,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:51,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:51,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:51,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 19:30:51,452 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:51,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:51,452 INFO L85 PathProgramCache]: Analyzing trace with hash -994111340, now seen corresponding path program 3 times [2024-06-27 19:30:51,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:51,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430812989] [2024-06-27 19:30:51,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:51,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:51,518 INFO 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 19:30:51,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:51,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430812989] [2024-06-27 19:30:51,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430812989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:51,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:51,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:30:51,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240909590] [2024-06-27 19:30:51,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:51,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:30:51,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:51,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:30:51,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:30:51,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:51,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 248 transitions, 2802 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:51,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:51,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:51,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:52,143 INFO L124 PetriNetUnfolderBase]: 2411/4164 cut-off events. [2024-06-27 19:30:52,143 INFO L125 PetriNetUnfolderBase]: For 319635/319635 co-relation queries the response was YES. [2024-06-27 19:30:52,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26828 conditions, 4164 events. 2411/4164 cut-off events. For 319635/319635 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 27415 event pairs, 762 based on Foata normal form. 6/4159 useless extension candidates. Maximal degree in co-relation 26714. Up to 3449 conditions per place. [2024-06-27 19:30:52,190 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 156 selfloop transitions, 113 changer transitions 0/277 dead transitions. [2024-06-27 19:30:52,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 277 transitions, 3462 flow [2024-06-27 19:30:52,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:30:52,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:30:52,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 19:30:52,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.61875 [2024-06-27 19:30:52,191 INFO L175 Difference]: Start difference. First operand has 246 places, 248 transitions, 2802 flow. Second operand 8 states and 198 transitions. [2024-06-27 19:30:52,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 277 transitions, 3462 flow [2024-06-27 19:30:53,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 277 transitions, 3242 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 19:30:53,051 INFO L231 Difference]: Finished difference. Result has 249 places, 249 transitions, 2834 flow [2024-06-27 19:30:53,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2583, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2834, PETRI_PLACES=249, PETRI_TRANSITIONS=249} [2024-06-27 19:30:53,051 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 208 predicate places. [2024-06-27 19:30:53,051 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 249 transitions, 2834 flow [2024-06-27 19:30:53,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:53,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:53,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:53,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 19:30:53,052 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:53,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:53,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1868446666, now seen corresponding path program 4 times [2024-06-27 19:30:53,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:53,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599169719] [2024-06-27 19:30:53,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:53,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:53,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:53,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:53,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:53,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599169719] [2024-06-27 19:30:53,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599169719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:53,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:53,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:30:53,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354764007] [2024-06-27 19:30:53,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:53,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:30:53,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:53,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:30:53,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:30:53,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:53,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 249 transitions, 2834 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:53,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:53,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:53,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:53,757 INFO L124 PetriNetUnfolderBase]: 2431/4209 cut-off events. [2024-06-27 19:30:53,758 INFO L125 PetriNetUnfolderBase]: For 327896/327896 co-relation queries the response was YES. [2024-06-27 19:30:53,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27011 conditions, 4209 events. 2431/4209 cut-off events. For 327896/327896 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 27805 event pairs, 749 based on Foata normal form. 6/4211 useless extension candidates. Maximal degree in co-relation 26896. Up to 3721 conditions per place. [2024-06-27 19:30:53,799 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 239 selfloop transitions, 29 changer transitions 0/276 dead transitions. [2024-06-27 19:30:53,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 276 transitions, 3493 flow [2024-06-27 19:30:53,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:30:53,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:30:53,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 19:30:53,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.590625 [2024-06-27 19:30:53,800 INFO L175 Difference]: Start difference. First operand has 249 places, 249 transitions, 2834 flow. Second operand 8 states and 189 transitions. [2024-06-27 19:30:53,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 276 transitions, 3493 flow [2024-06-27 19:30:54,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 276 transitions, 3261 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 19:30:54,453 INFO L231 Difference]: Finished difference. Result has 251 places, 250 transitions, 2687 flow [2024-06-27 19:30:54,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2602, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2687, PETRI_PLACES=251, PETRI_TRANSITIONS=250} [2024-06-27 19:30:54,454 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 210 predicate places. [2024-06-27 19:30:54,454 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 250 transitions, 2687 flow [2024-06-27 19:30:54,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:54,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:54,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:54,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 19:30:54,455 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:54,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:54,455 INFO L85 PathProgramCache]: Analyzing trace with hash 2107862324, now seen corresponding path program 9 times [2024-06-27 19:30:54,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:54,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669583827] [2024-06-27 19:30:54,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:54,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:54,532 INFO 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 19:30:54,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:54,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669583827] [2024-06-27 19:30:54,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669583827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:54,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:54,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:30:54,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174840597] [2024-06-27 19:30:54,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:54,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:30:54,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:54,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:30:54,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:30:54,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:54,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 250 transitions, 2687 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:54,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:54,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:54,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:55,195 INFO L124 PetriNetUnfolderBase]: 2619/4502 cut-off events. [2024-06-27 19:30:55,196 INFO L125 PetriNetUnfolderBase]: For 441733/441733 co-relation queries the response was YES. [2024-06-27 19:30:55,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30866 conditions, 4502 events. 2619/4502 cut-off events. For 441733/441733 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 30036 event pairs, 863 based on Foata normal form. 8/4507 useless extension candidates. Maximal degree in co-relation 30750. Up to 3492 conditions per place. [2024-06-27 19:30:55,246 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 178 selfloop transitions, 101 changer transitions 0/287 dead transitions. [2024-06-27 19:30:55,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 287 transitions, 3599 flow [2024-06-27 19:30:55,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:30:55,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:30:55,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-27 19:30:55,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6375 [2024-06-27 19:30:55,247 INFO L175 Difference]: Start difference. First operand has 251 places, 250 transitions, 2687 flow. Second operand 8 states and 204 transitions. [2024-06-27 19:30:55,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 287 transitions, 3599 flow [2024-06-27 19:30:56,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 287 transitions, 3533 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 19:30:56,436 INFO L231 Difference]: Finished difference. Result has 253 places, 252 transitions, 2885 flow [2024-06-27 19:30:56,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2621, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2885, PETRI_PLACES=253, PETRI_TRANSITIONS=252} [2024-06-27 19:30:56,436 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 212 predicate places. [2024-06-27 19:30:56,436 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 252 transitions, 2885 flow [2024-06-27 19:30:56,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:56,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:56,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:56,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 19:30:56,437 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:56,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:56,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1683523314, now seen corresponding path program 10 times [2024-06-27 19:30:56,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:56,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976218496] [2024-06-27 19:30:56,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:56,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:56,529 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 19:30:56,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:56,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976218496] [2024-06-27 19:30:56,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976218496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:56,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:56,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:30:56,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258826756] [2024-06-27 19:30:56,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:56,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:30:56,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:56,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:30:56,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:30:56,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:56,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 252 transitions, 2885 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:56,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:56,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:56,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:57,219 INFO L124 PetriNetUnfolderBase]: 2647/4546 cut-off events. [2024-06-27 19:30:57,219 INFO L125 PetriNetUnfolderBase]: For 454608/454608 co-relation queries the response was YES. [2024-06-27 19:30:57,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31566 conditions, 4546 events. 2647/4546 cut-off events. For 454608/454608 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 30325 event pairs, 883 based on Foata normal form. 8/4551 useless extension candidates. Maximal degree in co-relation 31449. Up to 3919 conditions per place. [2024-06-27 19:30:57,264 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 170 selfloop transitions, 100 changer transitions 0/278 dead transitions. [2024-06-27 19:30:57,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 278 transitions, 3541 flow [2024-06-27 19:30:57,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:30:57,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:30:57,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 19:30:57,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-06-27 19:30:57,265 INFO L175 Difference]: Start difference. First operand has 253 places, 252 transitions, 2885 flow. Second operand 8 states and 195 transitions. [2024-06-27 19:30:57,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 278 transitions, 3541 flow [2024-06-27 19:30:58,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 278 transitions, 3377 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-27 19:30:58,226 INFO L231 Difference]: Finished difference. Result has 257 places, 253 transitions, 2958 flow [2024-06-27 19:30:58,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2733, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2958, PETRI_PLACES=257, PETRI_TRANSITIONS=253} [2024-06-27 19:30:58,227 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 216 predicate places. [2024-06-27 19:30:58,227 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 253 transitions, 2958 flow [2024-06-27 19:30:58,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:58,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:58,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:58,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 19:30:58,228 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:30:58,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:58,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1617625804, now seen corresponding path program 11 times [2024-06-27 19:30:58,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:58,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444065275] [2024-06-27 19:30:58,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:58,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:58,324 INFO 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 19:30:58,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:58,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444065275] [2024-06-27 19:30:58,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444065275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:58,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:58,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:30:58,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657792089] [2024-06-27 19:30:58,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:58,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:30:58,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:58,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:30:58,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:30:58,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:30:58,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 253 transitions, 2958 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:58,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:58,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:30:58,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:58,995 INFO L124 PetriNetUnfolderBase]: 2675/4590 cut-off events. [2024-06-27 19:30:58,995 INFO L125 PetriNetUnfolderBase]: For 463261/463261 co-relation queries the response was YES. [2024-06-27 19:30:59,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31869 conditions, 4590 events. 2675/4590 cut-off events. For 463261/463261 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 30698 event pairs, 887 based on Foata normal form. 8/4595 useless extension candidates. Maximal degree in co-relation 31750. Up to 3963 conditions per place. [2024-06-27 19:30:59,048 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 170 selfloop transitions, 98 changer transitions 0/276 dead transitions. [2024-06-27 19:30:59,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 276 transitions, 3592 flow [2024-06-27 19:30:59,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:30:59,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:30:59,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 19:30:59,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-27 19:30:59,049 INFO L175 Difference]: Start difference. First operand has 257 places, 253 transitions, 2958 flow. Second operand 8 states and 192 transitions. [2024-06-27 19:30:59,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 276 transitions, 3592 flow [2024-06-27 19:31:00,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 276 transitions, 3389 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 19:31:00,111 INFO L231 Difference]: Finished difference. Result has 259 places, 254 transitions, 2978 flow [2024-06-27 19:31:00,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2755, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2978, PETRI_PLACES=259, PETRI_TRANSITIONS=254} [2024-06-27 19:31:00,112 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 218 predicate places. [2024-06-27 19:31:00,112 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 254 transitions, 2978 flow [2024-06-27 19:31:00,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:00,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:00,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:00,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 19:31:00,112 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:00,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:00,113 INFO L85 PathProgramCache]: Analyzing trace with hash -502047436, now seen corresponding path program 12 times [2024-06-27 19:31:00,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:00,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149530007] [2024-06-27 19:31:00,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:00,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:00,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:00,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:31:00,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:00,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149530007] [2024-06-27 19:31:00,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149530007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:00,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:00,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:00,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565523111] [2024-06-27 19:31:00,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:00,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:00,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:00,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:00,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:00,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:00,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 254 transitions, 2978 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:00,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:00,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:00,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:00,878 INFO L124 PetriNetUnfolderBase]: 2779/4762 cut-off events. [2024-06-27 19:31:00,878 INFO L125 PetriNetUnfolderBase]: For 560903/560903 co-relation queries the response was YES. [2024-06-27 19:31:00,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32813 conditions, 4762 events. 2779/4762 cut-off events. For 560903/560903 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 32055 event pairs, 927 based on Foata normal form. 34/4793 useless extension candidates. Maximal degree in co-relation 32693. Up to 4001 conditions per place. [2024-06-27 19:31:00,931 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 173 selfloop transitions, 92 changer transitions 3/276 dead transitions. [2024-06-27 19:31:00,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 276 transitions, 3618 flow [2024-06-27 19:31:00,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:31:00,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:31:00,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 19:31:00,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-27 19:31:00,932 INFO L175 Difference]: Start difference. First operand has 259 places, 254 transitions, 2978 flow. Second operand 8 states and 192 transitions. [2024-06-27 19:31:00,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 276 transitions, 3618 flow [2024-06-27 19:31:02,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 276 transitions, 3417 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 19:31:02,076 INFO L231 Difference]: Finished difference. Result has 261 places, 254 transitions, 2983 flow [2024-06-27 19:31:02,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2777, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2983, PETRI_PLACES=261, PETRI_TRANSITIONS=254} [2024-06-27 19:31:02,077 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 220 predicate places. [2024-06-27 19:31:02,077 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 254 transitions, 2983 flow [2024-06-27 19:31:02,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:02,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:02,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:02,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 19:31:02,077 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:02,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:02,078 INFO L85 PathProgramCache]: Analyzing trace with hash -71049068, now seen corresponding path program 5 times [2024-06-27 19:31:02,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:02,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820591114] [2024-06-27 19:31:02,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:02,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:02,140 INFO 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 19:31:02,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:02,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820591114] [2024-06-27 19:31:02,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820591114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:02,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:02,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:02,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137068528] [2024-06-27 19:31:02,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:02,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:02,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:02,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:02,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:02,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:02,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 254 transitions, 2983 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:02,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:02,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:02,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:02,894 INFO L124 PetriNetUnfolderBase]: 2936/5037 cut-off events. [2024-06-27 19:31:02,894 INFO L125 PetriNetUnfolderBase]: For 582812/582812 co-relation queries the response was YES. [2024-06-27 19:31:02,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36647 conditions, 5037 events. 2936/5037 cut-off events. For 582812/582812 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 34242 event pairs, 932 based on Foata normal form. 6/5040 useless extension candidates. Maximal degree in co-relation 36526. Up to 3333 conditions per place. [2024-06-27 19:31:02,955 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 179 selfloop transitions, 110 changer transitions 0/297 dead transitions. [2024-06-27 19:31:02,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 297 transitions, 4121 flow [2024-06-27 19:31:02,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:31:02,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:31:02,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-27 19:31:02,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.653125 [2024-06-27 19:31:02,956 INFO L175 Difference]: Start difference. First operand has 261 places, 254 transitions, 2983 flow. Second operand 8 states and 209 transitions. [2024-06-27 19:31:02,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 297 transitions, 4121 flow [2024-06-27 19:31:04,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 297 transitions, 3930 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 19:31:04,277 INFO L231 Difference]: Finished difference. Result has 263 places, 256 transitions, 3078 flow [2024-06-27 19:31:04,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2792, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3078, PETRI_PLACES=263, PETRI_TRANSITIONS=256} [2024-06-27 19:31:04,278 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 222 predicate places. [2024-06-27 19:31:04,278 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 256 transitions, 3078 flow [2024-06-27 19:31:04,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:04,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:04,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:04,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 19:31:04,279 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:04,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:04,279 INFO L85 PathProgramCache]: Analyzing trace with hash -61525868, now seen corresponding path program 6 times [2024-06-27 19:31:04,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:04,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765174643] [2024-06-27 19:31:04,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:04,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:04,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:04,342 INFO 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 19:31:04,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:04,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765174643] [2024-06-27 19:31:04,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765174643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:04,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:04,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:04,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856044746] [2024-06-27 19:31:04,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:04,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:04,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:04,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:04,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:04,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:04,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 256 transitions, 3078 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:04,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:04,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:04,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:05,095 INFO L124 PetriNetUnfolderBase]: 2956/5067 cut-off events. [2024-06-27 19:31:05,095 INFO L125 PetriNetUnfolderBase]: For 599436/599436 co-relation queries the response was YES. [2024-06-27 19:31:05,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37221 conditions, 5067 events. 2956/5067 cut-off events. For 599436/599436 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 34465 event pairs, 1010 based on Foata normal form. 6/5070 useless extension candidates. Maximal degree in co-relation 37099. Up to 3345 conditions per place. [2024-06-27 19:31:05,153 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 175 selfloop transitions, 109 changer transitions 0/292 dead transitions. [2024-06-27 19:31:05,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 292 transitions, 3994 flow [2024-06-27 19:31:05,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:31:05,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:31:05,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 19:31:05,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.634375 [2024-06-27 19:31:05,154 INFO L175 Difference]: Start difference. First operand has 263 places, 256 transitions, 3078 flow. Second operand 8 states and 203 transitions. [2024-06-27 19:31:05,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 292 transitions, 3994 flow [2024-06-27 19:31:06,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 292 transitions, 3731 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-27 19:31:06,203 INFO L231 Difference]: Finished difference. Result has 266 places, 257 transitions, 3069 flow [2024-06-27 19:31:06,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2829, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3069, PETRI_PLACES=266, PETRI_TRANSITIONS=257} [2024-06-27 19:31:06,203 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 225 predicate places. [2024-06-27 19:31:06,203 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 257 transitions, 3069 flow [2024-06-27 19:31:06,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:06,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:06,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:06,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 19:31:06,204 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:06,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:06,204 INFO L85 PathProgramCache]: Analyzing trace with hash 656440408, now seen corresponding path program 7 times [2024-06-27 19:31:06,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:06,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308235017] [2024-06-27 19:31:06,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:06,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:06,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:31:06,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:06,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308235017] [2024-06-27 19:31:06,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308235017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:06,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:06,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:06,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705889280] [2024-06-27 19:31:06,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:06,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:06,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:06,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:06,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:06,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:06,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 257 transitions, 3069 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:06,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:06,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:06,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:07,077 INFO L124 PetriNetUnfolderBase]: 2976/5109 cut-off events. [2024-06-27 19:31:07,078 INFO L125 PetriNetUnfolderBase]: For 609141/609141 co-relation queries the response was YES. [2024-06-27 19:31:07,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37311 conditions, 5109 events. 2976/5109 cut-off events. For 609141/609141 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 34868 event pairs, 1048 based on Foata normal form. 6/5112 useless extension candidates. Maximal degree in co-relation 37188. Up to 4392 conditions per place. [2024-06-27 19:31:07,130 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 175 selfloop transitions, 100 changer transitions 0/283 dead transitions. [2024-06-27 19:31:07,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 283 transitions, 3733 flow [2024-06-27 19:31:07,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:31:07,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:31:07,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 19:31:07,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.60625 [2024-06-27 19:31:07,131 INFO L175 Difference]: Start difference. First operand has 266 places, 257 transitions, 3069 flow. Second operand 8 states and 194 transitions. [2024-06-27 19:31:07,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 283 transitions, 3733 flow [2024-06-27 19:31:08,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 283 transitions, 3536 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 19:31:08,421 INFO L231 Difference]: Finished difference. Result has 269 places, 258 transitions, 3098 flow [2024-06-27 19:31:08,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2873, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3098, PETRI_PLACES=269, PETRI_TRANSITIONS=258} [2024-06-27 19:31:08,422 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 228 predicate places. [2024-06-27 19:31:08,422 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 258 transitions, 3098 flow [2024-06-27 19:31:08,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:08,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:08,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:08,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 19:31:08,423 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:08,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:08,423 INFO L85 PathProgramCache]: Analyzing trace with hash -308107116, now seen corresponding path program 8 times [2024-06-27 19:31:08,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:08,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459363015] [2024-06-27 19:31:08,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:08,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:08,484 INFO 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 19:31:08,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:08,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459363015] [2024-06-27 19:31:08,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459363015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:08,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:08,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:08,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149409520] [2024-06-27 19:31:08,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:08,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:08,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:08,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:08,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:08,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:08,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 258 transitions, 3098 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:08,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:08,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:08,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:09,297 INFO L124 PetriNetUnfolderBase]: 3224/5567 cut-off events. [2024-06-27 19:31:09,297 INFO L125 PetriNetUnfolderBase]: For 798180/798180 co-relation queries the response was YES. [2024-06-27 19:31:09,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43195 conditions, 5567 events. 3224/5567 cut-off events. For 798180/798180 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 38828 event pairs, 1075 based on Foata normal form. 6/5570 useless extension candidates. Maximal degree in co-relation 43071. Up to 3377 conditions per place. [2024-06-27 19:31:09,361 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 194 selfloop transitions, 102 changer transitions 0/304 dead transitions. [2024-06-27 19:31:09,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 304 transitions, 4264 flow [2024-06-27 19:31:09,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:31:09,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:31:09,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-27 19:31:09,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.659375 [2024-06-27 19:31:09,362 INFO L175 Difference]: Start difference. First operand has 269 places, 258 transitions, 3098 flow. Second operand 8 states and 211 transitions. [2024-06-27 19:31:09,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 304 transitions, 4264 flow [2024-06-27 19:31:10,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 304 transitions, 4058 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 19:31:10,575 INFO L231 Difference]: Finished difference. Result has 271 places, 259 transitions, 3130 flow [2024-06-27 19:31:10,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2892, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3130, PETRI_PLACES=271, PETRI_TRANSITIONS=259} [2024-06-27 19:31:10,575 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 230 predicate places. [2024-06-27 19:31:10,575 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 259 transitions, 3130 flow [2024-06-27 19:31:10,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:10,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:10,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:10,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 19:31:10,576 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:10,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:10,576 INFO L85 PathProgramCache]: Analyzing trace with hash 197379182, now seen corresponding path program 9 times [2024-06-27 19:31:10,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:10,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11922945] [2024-06-27 19:31:10,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:10,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:10,652 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 19:31:10,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:10,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11922945] [2024-06-27 19:31:10,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11922945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:10,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:10,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:10,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785508035] [2024-06-27 19:31:10,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:10,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:10,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:10,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:10,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:10,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:10,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 259 transitions, 3130 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:10,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:10,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:10,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:11,552 INFO L124 PetriNetUnfolderBase]: 3244/5603 cut-off events. [2024-06-27 19:31:11,553 INFO L125 PetriNetUnfolderBase]: For 818612/818612 co-relation queries the response was YES. [2024-06-27 19:31:11,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43789 conditions, 5603 events. 3244/5603 cut-off events. For 818612/818612 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 39082 event pairs, 1075 based on Foata normal form. 6/5606 useless extension candidates. Maximal degree in co-relation 43664. Up to 3389 conditions per place. [2024-06-27 19:31:11,626 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 193 selfloop transitions, 100 changer transitions 0/301 dead transitions. [2024-06-27 19:31:11,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 301 transitions, 4272 flow [2024-06-27 19:31:11,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:31:11,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:31:11,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-27 19:31:11,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.646875 [2024-06-27 19:31:11,627 INFO L175 Difference]: Start difference. First operand has 271 places, 259 transitions, 3130 flow. Second operand 8 states and 207 transitions. [2024-06-27 19:31:11,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 301 transitions, 4272 flow [2024-06-27 19:31:13,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 301 transitions, 3788 flow, removed 25 selfloop flow, removed 12 redundant places. [2024-06-27 19:31:13,470 INFO L231 Difference]: Finished difference. Result has 267 places, 260 transitions, 2882 flow [2024-06-27 19:31:13,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2661, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2882, PETRI_PLACES=267, PETRI_TRANSITIONS=260} [2024-06-27 19:31:13,471 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 226 predicate places. [2024-06-27 19:31:13,471 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 260 transitions, 2882 flow [2024-06-27 19:31:13,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:13,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:13,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:13,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 19:31:13,471 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:13,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:13,472 INFO L85 PathProgramCache]: Analyzing trace with hash 2093635732, now seen corresponding path program 10 times [2024-06-27 19:31:13,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:13,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33584661] [2024-06-27 19:31:13,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:13,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:13,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:31:13,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:13,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33584661] [2024-06-27 19:31:13,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33584661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:13,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:13,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:13,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806775821] [2024-06-27 19:31:13,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:13,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:13,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:13,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:13,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:13,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:13,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 260 transitions, 2882 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:13,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:13,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:13,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:14,499 INFO L124 PetriNetUnfolderBase]: 3426/5899 cut-off events. [2024-06-27 19:31:14,500 INFO L125 PetriNetUnfolderBase]: For 993986/993986 co-relation queries the response was YES. [2024-06-27 19:31:14,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45780 conditions, 5899 events. 3426/5899 cut-off events. For 993986/993986 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 41542 event pairs, 1110 based on Foata normal form. 24/5920 useless extension candidates. Maximal degree in co-relation 45661. Up to 3424 conditions per place. [2024-06-27 19:31:14,564 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 193 selfloop transitions, 94 changer transitions 6/301 dead transitions. [2024-06-27 19:31:14,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 301 transitions, 4017 flow [2024-06-27 19:31:14,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:31:14,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:31:14,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-27 19:31:14,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.64375 [2024-06-27 19:31:14,565 INFO L175 Difference]: Start difference. First operand has 267 places, 260 transitions, 2882 flow. Second operand 8 states and 206 transitions. [2024-06-27 19:31:14,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 301 transitions, 4017 flow [2024-06-27 19:31:16,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 301 transitions, 3826 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 19:31:16,701 INFO L231 Difference]: Finished difference. Result has 270 places, 259 transitions, 2891 flow [2024-06-27 19:31:16,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2692, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2891, PETRI_PLACES=270, PETRI_TRANSITIONS=259} [2024-06-27 19:31:16,702 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 229 predicate places. [2024-06-27 19:31:16,702 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 259 transitions, 2891 flow [2024-06-27 19:31:16,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:16,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:16,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:16,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 19:31:16,703 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:16,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:16,703 INFO L85 PathProgramCache]: Analyzing trace with hash -352732050, now seen corresponding path program 11 times [2024-06-27 19:31:16,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:16,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169512084] [2024-06-27 19:31:16,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:16,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:16,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:16,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:31:16,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:16,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169512084] [2024-06-27 19:31:16,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169512084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:16,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:16,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:16,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706016029] [2024-06-27 19:31:16,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:16,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:16,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:16,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:16,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:16,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:16,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 259 transitions, 2891 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:16,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:16,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:16,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:17,721 INFO L124 PetriNetUnfolderBase]: 3696/6381 cut-off events. [2024-06-27 19:31:17,721 INFO L125 PetriNetUnfolderBase]: For 1252721/1252721 co-relation queries the response was YES. [2024-06-27 19:31:17,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52907 conditions, 6381 events. 3696/6381 cut-off events. For 1252721/1252721 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 46051 event pairs, 1494 based on Foata normal form. 30/6408 useless extension candidates. Maximal degree in co-relation 52787. Up to 4256 conditions per place. [2024-06-27 19:31:17,803 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 186 selfloop transitions, 90 changer transitions 9/293 dead transitions. [2024-06-27 19:31:17,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 293 transitions, 3839 flow [2024-06-27 19:31:17,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:31:17,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:31:17,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-27 19:31:17,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-27 19:31:17,804 INFO L175 Difference]: Start difference. First operand has 270 places, 259 transitions, 2891 flow. Second operand 8 states and 200 transitions. [2024-06-27 19:31:17,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 293 transitions, 3839 flow [2024-06-27 19:31:20,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 293 transitions, 3641 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 19:31:20,257 INFO L231 Difference]: Finished difference. Result has 272 places, 257 transitions, 2875 flow [2024-06-27 19:31:20,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2693, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2875, PETRI_PLACES=272, PETRI_TRANSITIONS=257} [2024-06-27 19:31:20,259 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 231 predicate places. [2024-06-27 19:31:20,260 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 257 transitions, 2875 flow [2024-06-27 19:31:20,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:20,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:20,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:20,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 19:31:20,260 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:20,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:20,276 INFO L85 PathProgramCache]: Analyzing trace with hash 586862, now seen corresponding path program 12 times [2024-06-27 19:31:20,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:20,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070332727] [2024-06-27 19:31:20,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:20,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:20,349 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 19:31:20,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:20,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070332727] [2024-06-27 19:31:20,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070332727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:20,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:20,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:20,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085777495] [2024-06-27 19:31:20,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:20,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:20,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:20,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:20,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:20,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:20,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 257 transitions, 2875 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:20,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:20,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:20,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:21,237 INFO L124 PetriNetUnfolderBase]: 3273/5632 cut-off events. [2024-06-27 19:31:21,237 INFO L125 PetriNetUnfolderBase]: For 971832/971832 co-relation queries the response was YES. [2024-06-27 19:31:21,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43376 conditions, 5632 events. 3273/5632 cut-off events. For 971832/971832 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 39358 event pairs, 1203 based on Foata normal form. 30/5659 useless extension candidates. Maximal degree in co-relation 43255. Up to 4643 conditions per place. [2024-06-27 19:31:21,306 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 177 selfloop transitions, 92 changer transitions 8/285 dead transitions. [2024-06-27 19:31:21,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 285 transitions, 3577 flow [2024-06-27 19:31:21,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:31:21,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:31:21,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 19:31:21,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.615625 [2024-06-27 19:31:21,307 INFO L175 Difference]: Start difference. First operand has 272 places, 257 transitions, 2875 flow. Second operand 8 states and 197 transitions. [2024-06-27 19:31:21,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 285 transitions, 3577 flow [2024-06-27 19:31:23,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 285 transitions, 3381 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 19:31:23,169 INFO L231 Difference]: Finished difference. Result has 274 places, 255 transitions, 2865 flow [2024-06-27 19:31:23,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2679, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2865, PETRI_PLACES=274, PETRI_TRANSITIONS=255} [2024-06-27 19:31:23,170 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 233 predicate places. [2024-06-27 19:31:23,170 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 255 transitions, 2865 flow [2024-06-27 19:31:23,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:23,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:23,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:23,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 19:31:23,171 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:23,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:23,171 INFO L85 PathProgramCache]: Analyzing trace with hash 859335014, now seen corresponding path program 13 times [2024-06-27 19:31:23,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:23,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778861957] [2024-06-27 19:31:23,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:23,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:23,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:23,245 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 19:31:23,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:23,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778861957] [2024-06-27 19:31:23,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778861957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:23,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:23,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:23,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262453385] [2024-06-27 19:31:23,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:23,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:23,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:23,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:23,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:23,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:23,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 255 transitions, 2865 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:23,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:23,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:23,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:24,099 INFO L124 PetriNetUnfolderBase]: 2886/4973 cut-off events. [2024-06-27 19:31:24,099 INFO L125 PetriNetUnfolderBase]: For 765920/765920 co-relation queries the response was YES. [2024-06-27 19:31:24,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35513 conditions, 4973 events. 2886/4973 cut-off events. For 765920/765920 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 33948 event pairs, 1025 based on Foata normal form. 34/5004 useless extension candidates. Maximal degree in co-relation 35391. Up to 4162 conditions per place. [2024-06-27 19:31:24,154 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 209 selfloop transitions, 64 changer transitions 3/284 dead transitions. [2024-06-27 19:31:24,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 284 transitions, 3521 flow [2024-06-27 19:31:24,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:31:24,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:31:24,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-27 19:31:24,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-06-27 19:31:24,155 INFO L175 Difference]: Start difference. First operand has 274 places, 255 transitions, 2865 flow. Second operand 7 states and 182 transitions. [2024-06-27 19:31:24,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 284 transitions, 3521 flow [2024-06-27 19:31:26,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 284 transitions, 3315 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 19:31:26,345 INFO L231 Difference]: Finished difference. Result has 275 places, 254 transitions, 2788 flow [2024-06-27 19:31:26,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2659, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2788, PETRI_PLACES=275, PETRI_TRANSITIONS=254} [2024-06-27 19:31:26,345 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 234 predicate places. [2024-06-27 19:31:26,346 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 254 transitions, 2788 flow [2024-06-27 19:31:26,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:26,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:26,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:26,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 19:31:26,346 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:26,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:26,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1790731320, now seen corresponding path program 14 times [2024-06-27 19:31:26,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:26,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876754125] [2024-06-27 19:31:26,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:26,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:26,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:26,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:31:26,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:26,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876754125] [2024-06-27 19:31:26,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876754125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:26,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:26,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:26,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40429832] [2024-06-27 19:31:26,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:26,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:26,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:26,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:26,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:26,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:26,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 254 transitions, 2788 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:26,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:26,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:26,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:27,147 INFO L124 PetriNetUnfolderBase]: 2807/4865 cut-off events. [2024-06-27 19:31:27,148 INFO L125 PetriNetUnfolderBase]: For 640858/640858 co-relation queries the response was YES. [2024-06-27 19:31:27,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31907 conditions, 4865 events. 2807/4865 cut-off events. For 640858/640858 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 33135 event pairs, 956 based on Foata normal form. 34/4897 useless extension candidates. Maximal degree in co-relation 31784. Up to 4013 conditions per place. [2024-06-27 19:31:27,200 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 209 selfloop transitions, 74 changer transitions 3/294 dead transitions. [2024-06-27 19:31:27,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 294 transitions, 3492 flow [2024-06-27 19:31:27,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:31:27,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:31:27,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-27 19:31:27,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-06-27 19:31:27,201 INFO L175 Difference]: Start difference. First operand has 275 places, 254 transitions, 2788 flow. Second operand 9 states and 234 transitions. [2024-06-27 19:31:27,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 294 transitions, 3492 flow [2024-06-27 19:31:29,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 294 transitions, 3338 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 19:31:29,014 INFO L231 Difference]: Finished difference. Result has 277 places, 253 transitions, 2786 flow [2024-06-27 19:31:29,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2634, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2786, PETRI_PLACES=277, PETRI_TRANSITIONS=253} [2024-06-27 19:31:29,015 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 236 predicate places. [2024-06-27 19:31:29,015 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 253 transitions, 2786 flow [2024-06-27 19:31:29,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:29,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:29,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:29,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 19:31:29,015 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:29,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:29,037 INFO L85 PathProgramCache]: Analyzing trace with hash -607429770, now seen corresponding path program 13 times [2024-06-27 19:31:29,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:29,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044251755] [2024-06-27 19:31:29,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:29,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:29,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:29,128 INFO 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 19:31:29,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:29,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044251755] [2024-06-27 19:31:29,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044251755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:29,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:29,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:29,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998972258] [2024-06-27 19:31:29,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:29,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:29,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:29,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:29,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:29,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:29,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 253 transitions, 2786 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:29,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:29,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:29,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:29,909 INFO L124 PetriNetUnfolderBase]: 2738/4753 cut-off events. [2024-06-27 19:31:29,910 INFO L125 PetriNetUnfolderBase]: For 499239/499239 co-relation queries the response was YES. [2024-06-27 19:31:29,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28690 conditions, 4753 events. 2738/4753 cut-off events. For 499239/499239 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 32339 event pairs, 848 based on Foata normal form. 30/4780 useless extension candidates. Maximal degree in co-relation 28567. Up to 3675 conditions per place. [2024-06-27 19:31:29,964 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 208 selfloop transitions, 64 changer transitions 8/288 dead transitions. [2024-06-27 19:31:29,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 288 transitions, 3496 flow [2024-06-27 19:31:29,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:31:29,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:31:29,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-27 19:31:29,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6678571428571428 [2024-06-27 19:31:29,965 INFO L175 Difference]: Start difference. First operand has 277 places, 253 transitions, 2786 flow. Second operand 7 states and 187 transitions. [2024-06-27 19:31:29,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 288 transitions, 3496 flow [2024-06-27 19:31:31,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 288 transitions, 3325 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 19:31:31,210 INFO L231 Difference]: Finished difference. Result has 275 places, 250 transitions, 2725 flow [2024-06-27 19:31:31,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2615, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2725, PETRI_PLACES=275, PETRI_TRANSITIONS=250} [2024-06-27 19:31:31,211 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 234 predicate places. [2024-06-27 19:31:31,211 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 250 transitions, 2725 flow [2024-06-27 19:31:31,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:31,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:31,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:31,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 19:31:31,211 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:31,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:31,212 INFO L85 PathProgramCache]: Analyzing trace with hash -960748682, now seen corresponding path program 14 times [2024-06-27 19:31:31,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:31,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536368323] [2024-06-27 19:31:31,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:31,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:31,299 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 19:31:31,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:31,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536368323] [2024-06-27 19:31:31,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536368323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:31,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:31,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:31,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144549752] [2024-06-27 19:31:31,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:31,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:31,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:31,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:31,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:31,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:31,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 250 transitions, 2725 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:31,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:31,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:31,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:31,997 INFO L124 PetriNetUnfolderBase]: 2630/4583 cut-off events. [2024-06-27 19:31:31,997 INFO L125 PetriNetUnfolderBase]: For 472736/472736 co-relation queries the response was YES. [2024-06-27 19:31:32,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27371 conditions, 4583 events. 2630/4583 cut-off events. For 472736/472736 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 31091 event pairs, 664 based on Foata normal form. 30/4610 useless extension candidates. Maximal degree in co-relation 27248. Up to 2120 conditions per place. [2024-06-27 19:31:32,046 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 203 selfloop transitions, 68 changer transitions 11/290 dead transitions. [2024-06-27 19:31:32,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 290 transitions, 3653 flow [2024-06-27 19:31:32,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:31:32,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:31:32,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-06-27 19:31:32,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2024-06-27 19:31:32,048 INFO L175 Difference]: Start difference. First operand has 275 places, 250 transitions, 2725 flow. Second operand 7 states and 190 transitions. [2024-06-27 19:31:32,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 290 transitions, 3653 flow [2024-06-27 19:31:33,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 290 transitions, 3466 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 19:31:33,159 INFO L231 Difference]: Finished difference. Result has 274 places, 245 transitions, 2630 flow [2024-06-27 19:31:33,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2540, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2630, PETRI_PLACES=274, PETRI_TRANSITIONS=245} [2024-06-27 19:31:33,160 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 233 predicate places. [2024-06-27 19:31:33,160 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 245 transitions, 2630 flow [2024-06-27 19:31:33,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:33,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:33,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:33,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 19:31:33,160 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:33,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:33,161 INFO L85 PathProgramCache]: Analyzing trace with hash -855205616, now seen corresponding path program 15 times [2024-06-27 19:31:33,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:33,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745398957] [2024-06-27 19:31:33,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:33,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:33,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:31:33,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:33,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745398957] [2024-06-27 19:31:33,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745398957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:33,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:33,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:33,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880146750] [2024-06-27 19:31:33,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:33,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:33,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:33,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:33,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:33,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:33,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 245 transitions, 2630 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:33,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:33,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:33,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:33,901 INFO L124 PetriNetUnfolderBase]: 2402/4190 cut-off events. [2024-06-27 19:31:33,902 INFO L125 PetriNetUnfolderBase]: For 350172/350172 co-relation queries the response was YES. [2024-06-27 19:31:33,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22918 conditions, 4190 events. 2402/4190 cut-off events. For 350172/350172 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 28012 event pairs, 637 based on Foata normal form. 30/4216 useless extension candidates. Maximal degree in co-relation 22795. Up to 3004 conditions per place. [2024-06-27 19:31:33,945 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 200 selfloop transitions, 77 changer transitions 6/291 dead transitions. [2024-06-27 19:31:33,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 291 transitions, 3374 flow [2024-06-27 19:31:33,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:31:33,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:31:33,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-06-27 19:31:33,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6555555555555556 [2024-06-27 19:31:33,947 INFO L175 Difference]: Start difference. First operand has 274 places, 245 transitions, 2630 flow. Second operand 9 states and 236 transitions. [2024-06-27 19:31:33,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 291 transitions, 3374 flow [2024-06-27 19:31:34,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 291 transitions, 3194 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 19:31:34,762 INFO L231 Difference]: Finished difference. Result has 275 places, 244 transitions, 2599 flow [2024-06-27 19:31:34,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2450, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2599, PETRI_PLACES=275, PETRI_TRANSITIONS=244} [2024-06-27 19:31:34,762 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 234 predicate places. [2024-06-27 19:31:34,762 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 244 transitions, 2599 flow [2024-06-27 19:31:34,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:34,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:34,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:34,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 19:31:34,763 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:34,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:34,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1754781842, now seen corresponding path program 1 times [2024-06-27 19:31:34,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:34,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892727386] [2024-06-27 19:31:34,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:34,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:34,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:31:34,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:34,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892727386] [2024-06-27 19:31:34,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892727386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:34,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:34,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:34,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38246524] [2024-06-27 19:31:34,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:34,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:34,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:34,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:34,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:34,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:34,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 244 transitions, 2599 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:34,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:34,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:34,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:35,478 INFO L124 PetriNetUnfolderBase]: 2501/4397 cut-off events. [2024-06-27 19:31:35,479 INFO L125 PetriNetUnfolderBase]: For 372146/372146 co-relation queries the response was YES. [2024-06-27 19:31:35,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25011 conditions, 4397 events. 2501/4397 cut-off events. For 372146/372146 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 29653 event pairs, 480 based on Foata normal form. 18/4412 useless extension candidates. Maximal degree in co-relation 24888. Up to 2230 conditions per place. [2024-06-27 19:31:35,524 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 180 selfloop transitions, 83 changer transitions 15/286 dead transitions. [2024-06-27 19:31:35,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 286 transitions, 3707 flow [2024-06-27 19:31:35,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:31:35,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:31:35,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-27 19:31:35,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.64375 [2024-06-27 19:31:35,525 INFO L175 Difference]: Start difference. First operand has 275 places, 244 transitions, 2599 flow. Second operand 8 states and 206 transitions. [2024-06-27 19:31:35,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 286 transitions, 3707 flow [2024-06-27 19:31:36,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 286 transitions, 3488 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-27 19:31:36,662 INFO L231 Difference]: Finished difference. Result has 273 places, 242 transitions, 2535 flow [2024-06-27 19:31:36,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2392, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2535, PETRI_PLACES=273, PETRI_TRANSITIONS=242} [2024-06-27 19:31:36,663 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 232 predicate places. [2024-06-27 19:31:36,663 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 242 transitions, 2535 flow [2024-06-27 19:31:36,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:36,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:36,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:36,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 19:31:36,664 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:36,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:36,664 INFO L85 PathProgramCache]: Analyzing trace with hash 152968730, now seen corresponding path program 2 times [2024-06-27 19:31:36,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:36,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204562952] [2024-06-27 19:31:36,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:36,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:36,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:31:36,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:36,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204562952] [2024-06-27 19:31:36,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204562952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:36,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:36,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:36,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186149295] [2024-06-27 19:31:36,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:36,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:36,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:36,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:36,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:36,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:36,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 242 transitions, 2535 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:36,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:36,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:36,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:37,442 INFO L124 PetriNetUnfolderBase]: 2550/4483 cut-off events. [2024-06-27 19:31:37,442 INFO L125 PetriNetUnfolderBase]: For 425584/425584 co-relation queries the response was YES. [2024-06-27 19:31:37,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26688 conditions, 4483 events. 2550/4483 cut-off events. For 425584/425584 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 30454 event pairs, 715 based on Foata normal form. 18/4498 useless extension candidates. Maximal degree in co-relation 26565. Up to 3573 conditions per place. [2024-06-27 19:31:37,489 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 235 selfloop transitions, 23 changer transitions 8/274 dead transitions. [2024-06-27 19:31:37,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 274 transitions, 3387 flow [2024-06-27 19:31:37,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:31:37,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:31:37,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-27 19:31:37,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6178571428571429 [2024-06-27 19:31:37,490 INFO L175 Difference]: Start difference. First operand has 273 places, 242 transitions, 2535 flow. Second operand 7 states and 173 transitions. [2024-06-27 19:31:37,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 274 transitions, 3387 flow [2024-06-27 19:31:38,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 274 transitions, 3213 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 19:31:38,610 INFO L231 Difference]: Finished difference. Result has 270 places, 240 transitions, 2393 flow [2024-06-27 19:31:38,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2365, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2393, PETRI_PLACES=270, PETRI_TRANSITIONS=240} [2024-06-27 19:31:38,610 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 229 predicate places. [2024-06-27 19:31:38,610 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 240 transitions, 2393 flow [2024-06-27 19:31:38,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:38,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:38,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:38,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 19:31:38,611 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:38,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:38,611 INFO L85 PathProgramCache]: Analyzing trace with hash -723175216, now seen corresponding path program 3 times [2024-06-27 19:31:38,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:38,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295002559] [2024-06-27 19:31:38,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:38,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:38,679 INFO 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 19:31:38,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:38,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295002559] [2024-06-27 19:31:38,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295002559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:38,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:38,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:38,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837364157] [2024-06-27 19:31:38,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:38,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:38,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:38,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:38,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:38,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:38,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 240 transitions, 2393 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:38,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:38,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:38,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:39,256 INFO L124 PetriNetUnfolderBase]: 2237/3928 cut-off events. [2024-06-27 19:31:39,256 INFO L125 PetriNetUnfolderBase]: For 182705/182705 co-relation queries the response was YES. [2024-06-27 19:31:39,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18898 conditions, 3928 events. 2237/3928 cut-off events. For 182705/182705 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 25896 event pairs, 539 based on Foata normal form. 18/3943 useless extension candidates. Maximal degree in co-relation 18776. Up to 3233 conditions per place. [2024-06-27 19:31:39,301 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 217 selfloop transitions, 20 changer transitions 22/267 dead transitions. [2024-06-27 19:31:39,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 267 transitions, 3021 flow [2024-06-27 19:31:39,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:31:39,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:31:39,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 19:31:39,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5964285714285714 [2024-06-27 19:31:39,302 INFO L175 Difference]: Start difference. First operand has 270 places, 240 transitions, 2393 flow. Second operand 7 states and 167 transitions. [2024-06-27 19:31:39,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 267 transitions, 3021 flow [2024-06-27 19:31:39,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 267 transitions, 2972 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 19:31:39,768 INFO L231 Difference]: Finished difference. Result has 269 places, 236 transitions, 2340 flow [2024-06-27 19:31:39,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2344, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2340, PETRI_PLACES=269, PETRI_TRANSITIONS=236} [2024-06-27 19:31:39,768 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 228 predicate places. [2024-06-27 19:31:39,768 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 236 transitions, 2340 flow [2024-06-27 19:31:39,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:39,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:39,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:39,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 19:31:39,769 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:39,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:39,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1193574528, now seen corresponding path program 4 times [2024-06-27 19:31:39,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:39,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044105777] [2024-06-27 19:31:39,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:39,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:39,879 INFO 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 19:31:39,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:39,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044105777] [2024-06-27 19:31:39,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044105777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:39,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:39,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:39,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342780044] [2024-06-27 19:31:39,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:39,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:39,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:39,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:39,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:39,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:39,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 236 transitions, 2340 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:39,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:39,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:39,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:40,468 INFO L124 PetriNetUnfolderBase]: 2303/4013 cut-off events. [2024-06-27 19:31:40,468 INFO L125 PetriNetUnfolderBase]: For 296809/296809 co-relation queries the response was YES. [2024-06-27 19:31:40,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21428 conditions, 4013 events. 2303/4013 cut-off events. For 296809/296809 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 26601 event pairs, 514 based on Foata normal form. 24/4035 useless extension candidates. Maximal degree in co-relation 21307. Up to 2582 conditions per place. [2024-06-27 19:31:40,509 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 175 selfloop transitions, 74 changer transitions 10/267 dead transitions. [2024-06-27 19:31:40,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 267 transitions, 3192 flow [2024-06-27 19:31:40,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:31:40,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:31:40,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-27 19:31:40,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-06-27 19:31:40,511 INFO L175 Difference]: Start difference. First operand has 269 places, 236 transitions, 2340 flow. Second operand 7 states and 180 transitions. [2024-06-27 19:31:40,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 267 transitions, 3192 flow [2024-06-27 19:31:41,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 267 transitions, 3134 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 19:31:41,225 INFO L231 Difference]: Finished difference. Result has 265 places, 232 transitions, 2385 flow [2024-06-27 19:31:41,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2284, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2385, PETRI_PLACES=265, PETRI_TRANSITIONS=232} [2024-06-27 19:31:41,226 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 224 predicate places. [2024-06-27 19:31:41,226 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 232 transitions, 2385 flow [2024-06-27 19:31:41,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:41,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:41,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:41,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 19:31:41,226 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:41,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:41,227 INFO L85 PathProgramCache]: Analyzing trace with hash -545819400, now seen corresponding path program 5 times [2024-06-27 19:31:41,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:41,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701696980] [2024-06-27 19:31:41,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:41,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:41,300 INFO 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 19:31:41,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:41,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701696980] [2024-06-27 19:31:41,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701696980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:41,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:41,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:41,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534773799] [2024-06-27 19:31:41,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:41,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:41,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:41,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:41,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:41,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:41,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 232 transitions, 2385 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:41,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:41,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:41,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:41,915 INFO L124 PetriNetUnfolderBase]: 2202/3857 cut-off events. [2024-06-27 19:31:41,915 INFO L125 PetriNetUnfolderBase]: For 296889/296889 co-relation queries the response was YES. [2024-06-27 19:31:41,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20664 conditions, 3857 events. 2202/3857 cut-off events. For 296889/296889 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 25422 event pairs, 734 based on Foata normal form. 26/3881 useless extension candidates. Maximal degree in co-relation 20543. Up to 3223 conditions per place. [2024-06-27 19:31:41,957 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 185 selfloop transitions, 50 changer transitions 6/249 dead transitions. [2024-06-27 19:31:41,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 249 transitions, 2939 flow [2024-06-27 19:31:41,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:31:41,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:31:41,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 19:31:41,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5964285714285714 [2024-06-27 19:31:41,958 INFO L175 Difference]: Start difference. First operand has 265 places, 232 transitions, 2385 flow. Second operand 7 states and 167 transitions. [2024-06-27 19:31:41,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 249 transitions, 2939 flow [2024-06-27 19:31:42,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 249 transitions, 2768 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 19:31:42,626 INFO L231 Difference]: Finished difference. Result has 261 places, 228 transitions, 2294 flow [2024-06-27 19:31:42,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2214, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2294, PETRI_PLACES=261, PETRI_TRANSITIONS=228} [2024-06-27 19:31:42,626 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 220 predicate places. [2024-06-27 19:31:42,627 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 228 transitions, 2294 flow [2024-06-27 19:31:42,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:42,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:42,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:42,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 19:31:42,628 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:42,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:42,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1329831298, now seen corresponding path program 6 times [2024-06-27 19:31:42,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:42,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5007077] [2024-06-27 19:31:42,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:42,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:42,717 INFO 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 19:31:42,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:42,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5007077] [2024-06-27 19:31:42,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5007077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:42,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:42,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:42,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193302892] [2024-06-27 19:31:42,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:42,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:42,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:42,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:42,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:42,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:42,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 228 transitions, 2294 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:42,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:42,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:42,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:43,285 INFO L124 PetriNetUnfolderBase]: 2073/3640 cut-off events. [2024-06-27 19:31:43,285 INFO L125 PetriNetUnfolderBase]: For 194667/194667 co-relation queries the response was YES. [2024-06-27 19:31:43,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17552 conditions, 3640 events. 2073/3640 cut-off events. For 194667/194667 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 23812 event pairs, 596 based on Foata normal form. 24/3662 useless extension candidates. Maximal degree in co-relation 17432. Up to 2921 conditions per place. [2024-06-27 19:31:43,324 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 181 selfloop transitions, 52 changer transitions 10/251 dead transitions. [2024-06-27 19:31:43,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 251 transitions, 2898 flow [2024-06-27 19:31:43,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:31:43,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:31:43,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-27 19:31:43,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6178571428571429 [2024-06-27 19:31:43,325 INFO L175 Difference]: Start difference. First operand has 261 places, 228 transitions, 2294 flow. Second operand 7 states and 173 transitions. [2024-06-27 19:31:43,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 251 transitions, 2898 flow [2024-06-27 19:31:43,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 251 transitions, 2787 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 19:31:43,831 INFO L231 Difference]: Finished difference. Result has 260 places, 223 transitions, 2248 flow [2024-06-27 19:31:43,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2183, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2248, PETRI_PLACES=260, PETRI_TRANSITIONS=223} [2024-06-27 19:31:43,832 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 219 predicate places. [2024-06-27 19:31:43,832 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 223 transitions, 2248 flow [2024-06-27 19:31:43,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:43,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:43,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:43,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 19:31:43,832 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:43,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:43,833 INFO L85 PathProgramCache]: Analyzing trace with hash -420016520, now seen corresponding path program 7 times [2024-06-27 19:31:43,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:43,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434385093] [2024-06-27 19:31:43,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:43,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:43,909 INFO 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 19:31:43,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:43,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434385093] [2024-06-27 19:31:43,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434385093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:43,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:43,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:43,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515132979] [2024-06-27 19:31:43,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:43,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:43,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:43,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:43,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:43,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:43,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 223 transitions, 2248 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:43,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:43,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:43,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:44,494 INFO L124 PetriNetUnfolderBase]: 2097/3693 cut-off events. [2024-06-27 19:31:44,494 INFO L125 PetriNetUnfolderBase]: For 237207/237207 co-relation queries the response was YES. [2024-06-27 19:31:44,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19161 conditions, 3693 events. 2097/3693 cut-off events. For 237207/237207 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 24135 event pairs, 353 based on Foata normal form. 18/3709 useless extension candidates. Maximal degree in co-relation 19041. Up to 2425 conditions per place. [2024-06-27 19:31:44,535 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 180 selfloop transitions, 57 changer transitions 8/253 dead transitions. [2024-06-27 19:31:44,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 253 transitions, 3046 flow [2024-06-27 19:31:44,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:31:44,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:31:44,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-27 19:31:44,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6357142857142857 [2024-06-27 19:31:44,536 INFO L175 Difference]: Start difference. First operand has 260 places, 223 transitions, 2248 flow. Second operand 7 states and 178 transitions. [2024-06-27 19:31:44,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 253 transitions, 3046 flow [2024-06-27 19:31:45,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 253 transitions, 2865 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-27 19:31:45,377 INFO L231 Difference]: Finished difference. Result has 255 places, 221 transitions, 2172 flow [2024-06-27 19:31:45,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2079, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2172, PETRI_PLACES=255, PETRI_TRANSITIONS=221} [2024-06-27 19:31:45,378 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 214 predicate places. [2024-06-27 19:31:45,378 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 221 transitions, 2172 flow [2024-06-27 19:31:45,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:45,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:45,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:45,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 19:31:45,378 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:45,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:45,379 INFO L85 PathProgramCache]: Analyzing trace with hash -419809130, now seen corresponding path program 8 times [2024-06-27 19:31:45,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:45,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274858887] [2024-06-27 19:31:45,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:45,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:45,455 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 19:31:45,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:45,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274858887] [2024-06-27 19:31:45,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274858887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:45,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:45,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:45,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479797426] [2024-06-27 19:31:45,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:45,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:45,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:45,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:45,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:45,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:45,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 221 transitions, 2172 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:45,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:45,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:45,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:45,968 INFO L124 PetriNetUnfolderBase]: 1932/3404 cut-off events. [2024-06-27 19:31:45,968 INFO L125 PetriNetUnfolderBase]: For 163039/163039 co-relation queries the response was YES. [2024-06-27 19:31:45,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15917 conditions, 3404 events. 1932/3404 cut-off events. For 163039/163039 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 22021 event pairs, 359 based on Foata normal form. 18/3420 useless extension candidates. Maximal degree in co-relation 15799. Up to 2425 conditions per place. [2024-06-27 19:31:46,000 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 171 selfloop transitions, 55 changer transitions 15/249 dead transitions. [2024-06-27 19:31:46,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 249 transitions, 2768 flow [2024-06-27 19:31:46,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:31:46,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:31:46,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 19:31:46,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-27 19:31:46,002 INFO L175 Difference]: Start difference. First operand has 255 places, 221 transitions, 2172 flow. Second operand 7 states and 175 transitions. [2024-06-27 19:31:46,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 249 transitions, 2768 flow [2024-06-27 19:31:46,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 249 transitions, 2652 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 19:31:46,478 INFO L231 Difference]: Finished difference. Result has 254 places, 214 transitions, 2093 flow [2024-06-27 19:31:46,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2056, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2093, PETRI_PLACES=254, PETRI_TRANSITIONS=214} [2024-06-27 19:31:46,480 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 213 predicate places. [2024-06-27 19:31:46,480 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 214 transitions, 2093 flow [2024-06-27 19:31:46,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:46,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:46,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:46,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 19:31:46,481 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:46,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:46,481 INFO L85 PathProgramCache]: Analyzing trace with hash -188493150, now seen corresponding path program 9 times [2024-06-27 19:31:46,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:46,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417595081] [2024-06-27 19:31:46,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:46,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:46,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:31:46,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:46,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417595081] [2024-06-27 19:31:46,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417595081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:46,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:46,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:46,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972644617] [2024-06-27 19:31:46,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:46,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:46,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:46,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:46,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:46,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:46,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 214 transitions, 2093 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:46,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:46,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:46,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:47,080 INFO L124 PetriNetUnfolderBase]: 2016/3530 cut-off events. [2024-06-27 19:31:47,080 INFO L125 PetriNetUnfolderBase]: For 266047/266047 co-relation queries the response was YES. [2024-06-27 19:31:47,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18307 conditions, 3530 events. 2016/3530 cut-off events. For 266047/266047 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 22820 event pairs, 592 based on Foata normal form. 24/3548 useless extension candidates. Maximal degree in co-relation 18189. Up to 1887 conditions per place. [2024-06-27 19:31:47,118 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 147 selfloop transitions, 71 changer transitions 23/249 dead transitions. [2024-06-27 19:31:47,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 249 transitions, 2901 flow [2024-06-27 19:31:47,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:31:47,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:31:47,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 19:31:47,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6125 [2024-06-27 19:31:47,119 INFO L175 Difference]: Start difference. First operand has 254 places, 214 transitions, 2093 flow. Second operand 8 states and 196 transitions. [2024-06-27 19:31:47,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 249 transitions, 2901 flow [2024-06-27 19:31:47,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 249 transitions, 2747 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-27 19:31:47,995 INFO L231 Difference]: Finished difference. Result has 246 places, 206 transitions, 2001 flow [2024-06-27 19:31:47,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1943, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2001, PETRI_PLACES=246, PETRI_TRANSITIONS=206} [2024-06-27 19:31:47,995 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 205 predicate places. [2024-06-27 19:31:47,996 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 206 transitions, 2001 flow [2024-06-27 19:31:47,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:47,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:47,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:47,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 19:31:47,996 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:47,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:47,997 INFO L85 PathProgramCache]: Analyzing trace with hash 47835970, now seen corresponding path program 1 times [2024-06-27 19:31:47,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:47,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447488543] [2024-06-27 19:31:47,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:47,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:48,057 INFO 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 19:31:48,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:48,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447488543] [2024-06-27 19:31:48,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447488543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:48,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:48,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:48,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138597200] [2024-06-27 19:31:48,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:48,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:48,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:48,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:48,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:48,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:48,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 206 transitions, 2001 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:48,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:48,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:48,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:48,561 INFO L124 PetriNetUnfolderBase]: 1951/3431 cut-off events. [2024-06-27 19:31:48,561 INFO L125 PetriNetUnfolderBase]: For 345766/345766 co-relation queries the response was YES. [2024-06-27 19:31:48,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19654 conditions, 3431 events. 1951/3431 cut-off events. For 345766/345766 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 22227 event pairs, 649 based on Foata normal form. 24/3449 useless extension candidates. Maximal degree in co-relation 19540. Up to 2530 conditions per place. [2024-06-27 19:31:48,598 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 144 selfloop transitions, 69 changer transitions 13/234 dead transitions. [2024-06-27 19:31:48,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 234 transitions, 2739 flow [2024-06-27 19:31:48,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:31:48,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:31:48,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 19:31:48,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.596875 [2024-06-27 19:31:48,599 INFO L175 Difference]: Start difference. First operand has 246 places, 206 transitions, 2001 flow. Second operand 8 states and 191 transitions. [2024-06-27 19:31:48,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 234 transitions, 2739 flow [2024-06-27 19:31:49,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 234 transitions, 2595 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 19:31:49,466 INFO L231 Difference]: Finished difference. Result has 241 places, 200 transitions, 1955 flow [2024-06-27 19:31:49,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1867, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1955, PETRI_PLACES=241, PETRI_TRANSITIONS=200} [2024-06-27 19:31:49,466 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 200 predicate places. [2024-06-27 19:31:49,466 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 200 transitions, 1955 flow [2024-06-27 19:31:49,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:49,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:49,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:49,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 19:31:49,467 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:49,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:49,467 INFO L85 PathProgramCache]: Analyzing trace with hash -21674856, now seen corresponding path program 2 times [2024-06-27 19:31:49,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:49,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961170131] [2024-06-27 19:31:49,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:49,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:49,534 INFO 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 19:31:49,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:49,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961170131] [2024-06-27 19:31:49,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961170131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:49,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:49,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:49,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090170101] [2024-06-27 19:31:49,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:49,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:49,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:49,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:49,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:49,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:49,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 200 transitions, 1955 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:49,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:49,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:49,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:49,992 INFO L124 PetriNetUnfolderBase]: 1768/3126 cut-off events. [2024-06-27 19:31:49,992 INFO L125 PetriNetUnfolderBase]: For 251906/251906 co-relation queries the response was YES. [2024-06-27 19:31:50,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16096 conditions, 3126 events. 1768/3126 cut-off events. For 251906/251906 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 20019 event pairs, 600 based on Foata normal form. 26/3146 useless extension candidates. Maximal degree in co-relation 15984. Up to 2530 conditions per place. [2024-06-27 19:31:50,027 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 130 selfloop transitions, 62 changer transitions 21/221 dead transitions. [2024-06-27 19:31:50,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 221 transitions, 2457 flow [2024-06-27 19:31:50,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:31:50,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:31:50,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-27 19:31:50,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.571875 [2024-06-27 19:31:50,028 INFO L175 Difference]: Start difference. First operand has 241 places, 200 transitions, 1955 flow. Second operand 8 states and 183 transitions. [2024-06-27 19:31:50,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 221 transitions, 2457 flow [2024-06-27 19:31:50,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 221 transitions, 2316 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 19:31:50,656 INFO L231 Difference]: Finished difference. Result has 238 places, 191 transitions, 1867 flow [2024-06-27 19:31:50,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1814, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1867, PETRI_PLACES=238, PETRI_TRANSITIONS=191} [2024-06-27 19:31:50,656 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 197 predicate places. [2024-06-27 19:31:50,656 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 191 transitions, 1867 flow [2024-06-27 19:31:50,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:50,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:50,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:50,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 19:31:50,657 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:50,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:50,657 INFO L85 PathProgramCache]: Analyzing trace with hash 553089628, now seen corresponding path program 3 times [2024-06-27 19:31:50,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:50,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702163654] [2024-06-27 19:31:50,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:50,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:50,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:31:50,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:50,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702163654] [2024-06-27 19:31:50,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702163654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:50,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:50,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:50,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448760071] [2024-06-27 19:31:50,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:50,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:50,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:50,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:50,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:50,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:50,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 191 transitions, 1867 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:50,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:50,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:50,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:51,161 INFO L124 PetriNetUnfolderBase]: 1802/3187 cut-off events. [2024-06-27 19:31:51,161 INFO L125 PetriNetUnfolderBase]: For 270203/270203 co-relation queries the response was YES. [2024-06-27 19:31:51,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17440 conditions, 3187 events. 1802/3187 cut-off events. For 270203/270203 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 20552 event pairs, 364 based on Foata normal form. 18/3204 useless extension candidates. Maximal degree in co-relation 17330. Up to 1082 conditions per place. [2024-06-27 19:31:51,190 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 126 selfloop transitions, 71 changer transitions 22/227 dead transitions. [2024-06-27 19:31:51,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 227 transitions, 2767 flow [2024-06-27 19:31:51,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:31:51,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:31:51,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 19:31:51,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-06-27 19:31:51,191 INFO L175 Difference]: Start difference. First operand has 238 places, 191 transitions, 1867 flow. Second operand 8 states and 195 transitions. [2024-06-27 19:31:51,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 227 transitions, 2767 flow [2024-06-27 19:31:51,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 227 transitions, 2611 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 19:31:51,686 INFO L231 Difference]: Finished difference. Result has 229 places, 182 transitions, 1775 flow [2024-06-27 19:31:51,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1727, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1775, PETRI_PLACES=229, PETRI_TRANSITIONS=182} [2024-06-27 19:31:51,687 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 188 predicate places. [2024-06-27 19:31:51,687 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 182 transitions, 1775 flow [2024-06-27 19:31:51,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:51,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:51,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:51,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 19:31:51,688 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:51,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:51,688 INFO L85 PathProgramCache]: Analyzing trace with hash 848308828, now seen corresponding path program 4 times [2024-06-27 19:31:51,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:51,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438312546] [2024-06-27 19:31:51,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:51,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:51,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:31:51,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:51,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438312546] [2024-06-27 19:31:51,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438312546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:51,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:51,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:51,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944779881] [2024-06-27 19:31:51,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:51,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:51,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:51,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:51,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:51,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:51,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 182 transitions, 1775 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:51,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:51,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:51,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:52,174 INFO L124 PetriNetUnfolderBase]: 1670/2957 cut-off events. [2024-06-27 19:31:52,174 INFO L125 PetriNetUnfolderBase]: For 301016/301016 co-relation queries the response was YES. [2024-06-27 19:31:52,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17769 conditions, 2957 events. 1670/2957 cut-off events. For 301016/301016 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 18947 event pairs, 516 based on Foata normal form. 18/2974 useless extension candidates. Maximal degree in co-relation 17662. Up to 1648 conditions per place. [2024-06-27 19:31:52,210 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 134 selfloop transitions, 58 changer transitions 14/214 dead transitions. [2024-06-27 19:31:52,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 214 transitions, 2615 flow [2024-06-27 19:31:52,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:31:52,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:31:52,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 19:31:52,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-27 19:31:52,212 INFO L175 Difference]: Start difference. First operand has 229 places, 182 transitions, 1775 flow. Second operand 8 states and 192 transitions. [2024-06-27 19:31:52,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 214 transitions, 2615 flow [2024-06-27 19:31:52,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 214 transitions, 2455 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 19:31:52,861 INFO L231 Difference]: Finished difference. Result has 221 places, 174 transitions, 1693 flow [2024-06-27 19:31:52,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1639, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1693, PETRI_PLACES=221, PETRI_TRANSITIONS=174} [2024-06-27 19:31:52,862 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 180 predicate places. [2024-06-27 19:31:52,862 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 174 transitions, 1693 flow [2024-06-27 19:31:52,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:52,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:52,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:52,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 19:31:52,862 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:52,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:52,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1279959864, now seen corresponding path program 5 times [2024-06-27 19:31:52,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:52,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258344243] [2024-06-27 19:31:52,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:52,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:52,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:52,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:31:52,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:52,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258344243] [2024-06-27 19:31:52,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258344243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:52,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:52,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:52,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607707886] [2024-06-27 19:31:52,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:52,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:52,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:52,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:52,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:52,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:52,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 174 transitions, 1693 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:52,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:52,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:52,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:53,287 INFO L124 PetriNetUnfolderBase]: 1493/2650 cut-off events. [2024-06-27 19:31:53,287 INFO L125 PetriNetUnfolderBase]: For 229921/229921 co-relation queries the response was YES. [2024-06-27 19:31:53,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14936 conditions, 2650 events. 1493/2650 cut-off events. For 229921/229921 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 16588 event pairs, 504 based on Foata normal form. 18/2667 useless extension candidates. Maximal degree in co-relation 14832. Up to 1648 conditions per place. [2024-06-27 19:31:53,309 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 114 selfloop transitions, 50 changer transitions 29/201 dead transitions. [2024-06-27 19:31:53,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 201 transitions, 2319 flow [2024-06-27 19:31:53,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:31:53,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:31:53,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 19:31:53,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58125 [2024-06-27 19:31:53,311 INFO L175 Difference]: Start difference. First operand has 221 places, 174 transitions, 1693 flow. Second operand 8 states and 186 transitions. [2024-06-27 19:31:53,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 201 transitions, 2319 flow [2024-06-27 19:31:53,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 201 transitions, 2169 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-27 19:31:53,737 INFO L231 Difference]: Finished difference. Result has 213 places, 160 transitions, 1515 flow [2024-06-27 19:31:53,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1553, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1515, PETRI_PLACES=213, PETRI_TRANSITIONS=160} [2024-06-27 19:31:53,737 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 172 predicate places. [2024-06-27 19:31:53,738 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 160 transitions, 1515 flow [2024-06-27 19:31:53,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:53,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:53,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:53,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 19:31:53,738 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:53,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:53,738 INFO L85 PathProgramCache]: Analyzing trace with hash 285645634, now seen corresponding path program 6 times [2024-06-27 19:31:53,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:53,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481438825] [2024-06-27 19:31:53,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:53,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:53,809 INFO 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 19:31:53,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:53,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481438825] [2024-06-27 19:31:53,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481438825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:53,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:53,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:53,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961131523] [2024-06-27 19:31:53,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:53,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:53,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:53,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:53,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:53,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:53,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 160 transitions, 1515 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:53,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:53,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:53,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:54,149 INFO L124 PetriNetUnfolderBase]: 1547/2717 cut-off events. [2024-06-27 19:31:54,149 INFO L125 PetriNetUnfolderBase]: For 279224/279224 co-relation queries the response was YES. [2024-06-27 19:31:54,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16494 conditions, 2717 events. 1547/2717 cut-off events. For 279224/279224 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 17121 event pairs, 574 based on Foata normal form. 24/2740 useless extension candidates. Maximal degree in co-relation 16395. Up to 1861 conditions per place. [2024-06-27 19:31:54,172 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 107 selfloop transitions, 51 changer transitions 16/182 dead transitions. [2024-06-27 19:31:54,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 182 transitions, 2093 flow [2024-06-27 19:31:54,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:31:54,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:31:54,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-27 19:31:54,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578125 [2024-06-27 19:31:54,173 INFO L175 Difference]: Start difference. First operand has 213 places, 160 transitions, 1515 flow. Second operand 8 states and 185 transitions. [2024-06-27 19:31:54,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 182 transitions, 2093 flow [2024-06-27 19:31:54,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 182 transitions, 1992 flow, removed 21 selfloop flow, removed 11 redundant places. [2024-06-27 19:31:54,531 INFO L231 Difference]: Finished difference. Result has 196 places, 151 transitions, 1448 flow [2024-06-27 19:31:54,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1428, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1448, PETRI_PLACES=196, PETRI_TRANSITIONS=151} [2024-06-27 19:31:54,532 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 155 predicate places. [2024-06-27 19:31:54,532 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 151 transitions, 1448 flow [2024-06-27 19:31:54,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:54,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:54,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:54,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 19:31:54,533 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:54,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:54,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1246690974, now seen corresponding path program 7 times [2024-06-27 19:31:54,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:54,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102325880] [2024-06-27 19:31:54,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:54,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:54,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:31:54,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:54,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102325880] [2024-06-27 19:31:54,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102325880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:54,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:54,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:54,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775228635] [2024-06-27 19:31:54,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:54,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:54,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:54,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:54,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:54,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:54,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 151 transitions, 1448 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:54,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:54,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:54,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:54,930 INFO L124 PetriNetUnfolderBase]: 1459/2573 cut-off events. [2024-06-27 19:31:54,930 INFO L125 PetriNetUnfolderBase]: For 237457/237457 co-relation queries the response was YES. [2024-06-27 19:31:54,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15385 conditions, 2573 events. 1459/2573 cut-off events. For 237457/237457 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 16064 event pairs, 598 based on Foata normal form. 26/2598 useless extension candidates. Maximal degree in co-relation 15293. Up to 2072 conditions per place. [2024-06-27 19:31:54,951 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 96 selfloop transitions, 45 changer transitions 17/166 dead transitions. [2024-06-27 19:31:54,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 166 transitions, 1820 flow [2024-06-27 19:31:54,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:31:54,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:31:54,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-06-27 19:31:54,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-27 19:31:54,952 INFO L175 Difference]: Start difference. First operand has 196 places, 151 transitions, 1448 flow. Second operand 8 states and 180 transitions. [2024-06-27 19:31:54,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 166 transitions, 1820 flow [2024-06-27 19:31:55,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 166 transitions, 1710 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-27 19:31:55,213 INFO L231 Difference]: Finished difference. Result has 188 places, 142 transitions, 1364 flow [2024-06-27 19:31:55,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1338, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1364, PETRI_PLACES=188, PETRI_TRANSITIONS=142} [2024-06-27 19:31:55,213 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 147 predicate places. [2024-06-27 19:31:55,213 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 142 transitions, 1364 flow [2024-06-27 19:31:55,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:55,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:55,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:55,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 19:31:55,214 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:55,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:55,214 INFO L85 PathProgramCache]: Analyzing trace with hash 634758334, now seen corresponding path program 8 times [2024-06-27 19:31:55,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:55,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766378168] [2024-06-27 19:31:55,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:55,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:55,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:31:55,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:55,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766378168] [2024-06-27 19:31:55,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766378168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:55,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:55,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:55,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395153340] [2024-06-27 19:31:55,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:55,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:55,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:55,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:55,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:55,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:55,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 142 transitions, 1364 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:55,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:55,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:55,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:55,695 INFO L124 PetriNetUnfolderBase]: 1437/2543 cut-off events. [2024-06-27 19:31:55,696 INFO L125 PetriNetUnfolderBase]: For 191196/191196 co-relation queries the response was YES. [2024-06-27 19:31:55,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14649 conditions, 2543 events. 1437/2543 cut-off events. For 191196/191196 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 15884 event pairs, 562 based on Foata normal form. 24/2566 useless extension candidates. Maximal degree in co-relation 14563. Up to 1813 conditions per place. [2024-06-27 19:31:55,718 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 101 selfloop transitions, 45 changer transitions 10/164 dead transitions. [2024-06-27 19:31:55,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 164 transitions, 1882 flow [2024-06-27 19:31:55,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:31:55,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:31:55,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-27 19:31:55,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.571875 [2024-06-27 19:31:55,719 INFO L175 Difference]: Start difference. First operand has 188 places, 142 transitions, 1364 flow. Second operand 8 states and 183 transitions. [2024-06-27 19:31:55,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 164 transitions, 1882 flow [2024-06-27 19:31:55,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 164 transitions, 1772 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-27 19:31:55,923 INFO L231 Difference]: Finished difference. Result has 180 places, 139 transitions, 1330 flow [2024-06-27 19:31:55,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1330, PETRI_PLACES=180, PETRI_TRANSITIONS=139} [2024-06-27 19:31:55,924 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 139 predicate places. [2024-06-27 19:31:55,924 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 139 transitions, 1330 flow [2024-06-27 19:31:55,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:55,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:55,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:55,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 19:31:55,924 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:55,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:55,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1034933852, now seen corresponding path program 9 times [2024-06-27 19:31:55,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:55,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386352789] [2024-06-27 19:31:55,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:55,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:56,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:31:56,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:56,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386352789] [2024-06-27 19:31:56,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386352789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:56,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:56,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:56,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15278871] [2024-06-27 19:31:56,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:56,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:56,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:56,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:56,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:56,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:56,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 139 transitions, 1330 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:56,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:56,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:56,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:56,362 INFO L124 PetriNetUnfolderBase]: 1466/2610 cut-off events. [2024-06-27 19:31:56,362 INFO L125 PetriNetUnfolderBase]: For 181676/181676 co-relation queries the response was YES. [2024-06-27 19:31:56,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15261 conditions, 2610 events. 1466/2610 cut-off events. For 181676/181676 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 16503 event pairs, 546 based on Foata normal form. 18/2627 useless extension candidates. Maximal degree in co-relation 15179. Up to 1589 conditions per place. [2024-06-27 19:31:56,382 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 101 selfloop transitions, 43 changer transitions 14/166 dead transitions. [2024-06-27 19:31:56,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 166 transitions, 1962 flow [2024-06-27 19:31:56,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:31:56,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:31:56,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 19:31:56,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-06-27 19:31:56,383 INFO L175 Difference]: Start difference. First operand has 180 places, 139 transitions, 1330 flow. Second operand 8 states and 190 transitions. [2024-06-27 19:31:56,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 166 transitions, 1962 flow [2024-06-27 19:31:56,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 166 transitions, 1863 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 19:31:56,579 INFO L231 Difference]: Finished difference. Result has 179 places, 131 transitions, 1263 flow [2024-06-27 19:31:56,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1263, PETRI_PLACES=179, PETRI_TRANSITIONS=131} [2024-06-27 19:31:56,580 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 138 predicate places. [2024-06-27 19:31:56,580 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 131 transitions, 1263 flow [2024-06-27 19:31:56,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:56,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:56,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:56,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 19:31:56,580 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:56,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:56,581 INFO L85 PathProgramCache]: Analyzing trace with hash 291220054, now seen corresponding path program 10 times [2024-06-27 19:31:56,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:56,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116264804] [2024-06-27 19:31:56,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:56,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:56,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:31:56,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:56,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116264804] [2024-06-27 19:31:56,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116264804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:56,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:56,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:56,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841269102] [2024-06-27 19:31:56,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:56,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:56,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:56,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:56,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:56,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:56,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 131 transitions, 1263 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:56,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:56,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:56,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:56,951 INFO L124 PetriNetUnfolderBase]: 1289/2303 cut-off events. [2024-06-27 19:31:56,951 INFO L125 PetriNetUnfolderBase]: For 151366/151366 co-relation queries the response was YES. [2024-06-27 19:31:56,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13274 conditions, 2303 events. 1289/2303 cut-off events. For 151366/151366 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 14235 event pairs, 528 based on Foata normal form. 18/2320 useless extension candidates. Maximal degree in co-relation 13193. Up to 1589 conditions per place. [2024-06-27 19:31:56,969 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 89 selfloop transitions, 38 changer transitions 20/155 dead transitions. [2024-06-27 19:31:56,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 155 transitions, 1755 flow [2024-06-27 19:31:56,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:31:56,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:31:56,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 19:31:56,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58125 [2024-06-27 19:31:56,970 INFO L175 Difference]: Start difference. First operand has 179 places, 131 transitions, 1263 flow. Second operand 8 states and 186 transitions. [2024-06-27 19:31:56,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 155 transitions, 1755 flow [2024-06-27 19:31:57,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 155 transitions, 1650 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-27 19:31:57,118 INFO L231 Difference]: Finished difference. Result has 172 places, 121 transitions, 1170 flow [2024-06-27 19:31:57,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1168, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1170, PETRI_PLACES=172, PETRI_TRANSITIONS=121} [2024-06-27 19:31:57,119 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 131 predicate places. [2024-06-27 19:31:57,119 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 121 transitions, 1170 flow [2024-06-27 19:31:57,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:57,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:57,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:57,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 19:31:57,119 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:57,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:57,120 INFO L85 PathProgramCache]: Analyzing trace with hash 295624534, now seen corresponding path program 11 times [2024-06-27 19:31:57,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:57,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396104567] [2024-06-27 19:31:57,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:57,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:57,196 INFO 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 19:31:57,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:57,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396104567] [2024-06-27 19:31:57,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396104567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:57,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:57,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:57,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198109543] [2024-06-27 19:31:57,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:57,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:57,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:57,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:57,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:57,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:57,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 121 transitions, 1170 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:57,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:57,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:57,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:57,465 INFO L124 PetriNetUnfolderBase]: 1142/2042 cut-off events. [2024-06-27 19:31:57,465 INFO L125 PetriNetUnfolderBase]: For 109563/109563 co-relation queries the response was YES. [2024-06-27 19:31:57,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10824 conditions, 2042 events. 1142/2042 cut-off events. For 109563/109563 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 12248 event pairs, 485 based on Foata normal form. 26/2067 useless extension candidates. Maximal degree in co-relation 10747. Up to 1589 conditions per place. [2024-06-27 19:31:57,482 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 71 selfloop transitions, 30 changer transitions 27/136 dead transitions. [2024-06-27 19:31:57,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 136 transitions, 1482 flow [2024-06-27 19:31:57,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:31:57,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:31:57,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2024-06-27 19:31:57,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54375 [2024-06-27 19:31:57,483 INFO L175 Difference]: Start difference. First operand has 172 places, 121 transitions, 1170 flow. Second operand 8 states and 174 transitions. [2024-06-27 19:31:57,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 136 transitions, 1482 flow [2024-06-27 19:31:57,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 136 transitions, 1395 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-27 19:31:57,565 INFO L231 Difference]: Finished difference. Result has 160 places, 107 transitions, 1020 flow [2024-06-27 19:31:57,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1020, PETRI_PLACES=160, PETRI_TRANSITIONS=107} [2024-06-27 19:31:57,565 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 119 predicate places. [2024-06-27 19:31:57,566 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 107 transitions, 1020 flow [2024-06-27 19:31:57,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:57,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:57,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:57,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 19:31:57,568 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:57,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:57,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1406457900, now seen corresponding path program 12 times [2024-06-27 19:31:57,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:57,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849721574] [2024-06-27 19:31:57,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:57,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:57,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:31:57,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:57,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849721574] [2024-06-27 19:31:57,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849721574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:57,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:57,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:57,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839764257] [2024-06-27 19:31:57,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:57,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:57,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:57,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:57,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:57,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:57,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 107 transitions, 1020 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:57,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:57,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:57,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:57,950 INFO L124 PetriNetUnfolderBase]: 1233/2159 cut-off events. [2024-06-27 19:31:57,951 INFO L125 PetriNetUnfolderBase]: For 104765/104765 co-relation queries the response was YES. [2024-06-27 19:31:57,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11791 conditions, 2159 events. 1233/2159 cut-off events. For 104765/104765 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 13072 event pairs, 524 based on Foata normal form. 24/2182 useless extension candidates. Maximal degree in co-relation 11720. Up to 1503 conditions per place. [2024-06-27 19:31:57,965 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 71 selfloop transitions, 38 changer transitions 10/127 dead transitions. [2024-06-27 19:31:57,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 127 transitions, 1428 flow [2024-06-27 19:31:57,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:31:57,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:31:57,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 198 transitions. [2024-06-27 19:31:57,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-27 19:31:57,967 INFO L175 Difference]: Start difference. First operand has 160 places, 107 transitions, 1020 flow. Second operand 9 states and 198 transitions. [2024-06-27 19:31:57,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 127 transitions, 1428 flow [2024-06-27 19:31:58,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 127 transitions, 1320 flow, removed 21 selfloop flow, removed 12 redundant places. [2024-06-27 19:31:58,049 INFO L231 Difference]: Finished difference. Result has 141 places, 104 transitions, 969 flow [2024-06-27 19:31:58,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=926, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=969, PETRI_PLACES=141, PETRI_TRANSITIONS=104} [2024-06-27 19:31:58,049 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 100 predicate places. [2024-06-27 19:31:58,049 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 104 transitions, 969 flow [2024-06-27 19:31:58,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:58,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:58,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:58,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 19:31:58,050 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:58,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:58,050 INFO L85 PathProgramCache]: Analyzing trace with hash 188509828, now seen corresponding path program 1 times [2024-06-27 19:31:58,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:58,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023992173] [2024-06-27 19:31:58,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:58,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:58,121 INFO 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 19:31:58,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:58,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023992173] [2024-06-27 19:31:58,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023992173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:58,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:58,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:58,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033703799] [2024-06-27 19:31:58,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:58,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:58,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:58,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:58,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:58,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:58,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 104 transitions, 969 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:58,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:58,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:58,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:58,370 INFO L124 PetriNetUnfolderBase]: 1066/1870 cut-off events. [2024-06-27 19:31:58,370 INFO L125 PetriNetUnfolderBase]: For 62684/62692 co-relation queries the response was YES. [2024-06-27 19:31:58,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9277 conditions, 1870 events. 1066/1870 cut-off events. For 62684/62692 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10912 event pairs, 475 based on Foata normal form. 34/1903 useless extension candidates. Maximal degree in co-relation 9214. Up to 1503 conditions per place. [2024-06-27 19:31:58,383 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 61 selfloop transitions, 34 changer transitions 14/117 dead transitions. [2024-06-27 19:31:58,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 117 transitions, 1237 flow [2024-06-27 19:31:58,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:31:58,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:31:58,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 190 transitions. [2024-06-27 19:31:58,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-27 19:31:58,385 INFO L175 Difference]: Start difference. First operand has 141 places, 104 transitions, 969 flow. Second operand 9 states and 190 transitions. [2024-06-27 19:31:58,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 117 transitions, 1237 flow [2024-06-27 19:31:58,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 117 transitions, 1160 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 19:31:58,439 INFO L231 Difference]: Finished difference. Result has 140 places, 99 transitions, 923 flow [2024-06-27 19:31:58,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=923, PETRI_PLACES=140, PETRI_TRANSITIONS=99} [2024-06-27 19:31:58,439 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 99 predicate places. [2024-06-27 19:31:58,440 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 99 transitions, 923 flow [2024-06-27 19:31:58,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:58,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:58,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:58,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 19:31:58,440 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:58,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:58,440 INFO L85 PathProgramCache]: Analyzing trace with hash -2032885762, now seen corresponding path program 2 times [2024-06-27 19:31:58,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:58,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681347794] [2024-06-27 19:31:58,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:58,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:58,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:31:58,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:58,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681347794] [2024-06-27 19:31:58,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681347794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:58,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:58,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:58,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147282187] [2024-06-27 19:31:58,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:58,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:58,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:58,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:58,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:58,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:58,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 99 transitions, 923 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:58,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:58,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:58,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:58,761 INFO L124 PetriNetUnfolderBase]: 1057/1857 cut-off events. [2024-06-27 19:31:58,761 INFO L125 PetriNetUnfolderBase]: For 59435/59435 co-relation queries the response was YES. [2024-06-27 19:31:58,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9126 conditions, 1857 events. 1057/1857 cut-off events. For 59435/59435 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10913 event pairs, 487 based on Foata normal form. 26/1882 useless extension candidates. Maximal degree in co-relation 9064. Up to 1497 conditions per place. [2024-06-27 19:31:58,773 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 63 selfloop transitions, 27 changer transitions 12/110 dead transitions. [2024-06-27 19:31:58,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 110 transitions, 1173 flow [2024-06-27 19:31:58,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:31:58,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:31:58,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-27 19:31:58,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-27 19:31:58,774 INFO L175 Difference]: Start difference. First operand has 140 places, 99 transitions, 923 flow. Second operand 7 states and 154 transitions. [2024-06-27 19:31:58,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 110 transitions, 1173 flow [2024-06-27 19:31:58,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 110 transitions, 1099 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 19:31:58,825 INFO L231 Difference]: Finished difference. Result has 133 places, 95 transitions, 876 flow [2024-06-27 19:31:58,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=876, PETRI_PLACES=133, PETRI_TRANSITIONS=95} [2024-06-27 19:31:58,825 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 92 predicate places. [2024-06-27 19:31:58,826 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 95 transitions, 876 flow [2024-06-27 19:31:58,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:58,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:58,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:58,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 19:31:58,826 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:58,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:58,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1625730836, now seen corresponding path program 3 times [2024-06-27 19:31:58,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:58,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899680090] [2024-06-27 19:31:58,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:58,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:58,894 INFO 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 19:31:58,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:58,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899680090] [2024-06-27 19:31:58,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899680090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:58,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:58,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:58,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805099196] [2024-06-27 19:31:58,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:58,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:58,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:58,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:58,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:58,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:58,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 95 transitions, 876 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:58,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:58,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:58,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:59,190 INFO L124 PetriNetUnfolderBase]: 1298/2282 cut-off events. [2024-06-27 19:31:59,190 INFO L125 PetriNetUnfolderBase]: For 80116/80116 co-relation queries the response was YES. [2024-06-27 19:31:59,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12104 conditions, 2282 events. 1298/2282 cut-off events. For 80116/80116 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 14291 event pairs, 574 based on Foata normal form. 18/2297 useless extension candidates. Maximal degree in co-relation 12044. Up to 1265 conditions per place. [2024-06-27 19:31:59,205 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 70 selfloop transitions, 35 changer transitions 7/120 dead transitions. [2024-06-27 19:31:59,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 120 transitions, 1334 flow [2024-06-27 19:31:59,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:31:59,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:31:59,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 201 transitions. [2024-06-27 19:31:59,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2024-06-27 19:31:59,206 INFO L175 Difference]: Start difference. First operand has 133 places, 95 transitions, 876 flow. Second operand 9 states and 201 transitions. [2024-06-27 19:31:59,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 120 transitions, 1334 flow [2024-06-27 19:31:59,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 120 transitions, 1268 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 19:31:59,266 INFO L231 Difference]: Finished difference. Result has 133 places, 94 transitions, 884 flow [2024-06-27 19:31:59,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=884, PETRI_PLACES=133, PETRI_TRANSITIONS=94} [2024-06-27 19:31:59,266 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 92 predicate places. [2024-06-27 19:31:59,266 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 94 transitions, 884 flow [2024-06-27 19:31:59,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:59,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:59,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:59,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 19:31:59,267 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:59,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:59,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1625553206, now seen corresponding path program 4 times [2024-06-27 19:31:59,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:59,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390834513] [2024-06-27 19:31:59,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:59,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:59,343 INFO 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 19:31:59,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:59,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390834513] [2024-06-27 19:31:59,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390834513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:59,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:59,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:59,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997969638] [2024-06-27 19:31:59,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:59,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:59,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:59,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:59,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:59,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:59,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 94 transitions, 884 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:59,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:59,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:59,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:59,624 INFO L124 PetriNetUnfolderBase]: 1205/2129 cut-off events. [2024-06-27 19:31:59,624 INFO L125 PetriNetUnfolderBase]: For 66690/66698 co-relation queries the response was YES. [2024-06-27 19:31:59,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10993 conditions, 2129 events. 1205/2129 cut-off events. For 66690/66698 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 13134 event pairs, 564 based on Foata normal form. 20/2146 useless extension candidates. Maximal degree in co-relation 10934. Up to 1799 conditions per place. [2024-06-27 19:31:59,637 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 76 selfloop transitions, 10 changer transitions 14/108 dead transitions. [2024-06-27 19:31:59,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 108 transitions, 1134 flow [2024-06-27 19:31:59,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:31:59,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:31:59,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-06-27 19:31:59,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5392857142857143 [2024-06-27 19:31:59,638 INFO L175 Difference]: Start difference. First operand has 133 places, 94 transitions, 884 flow. Second operand 7 states and 151 transitions. [2024-06-27 19:31:59,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 108 transitions, 1134 flow [2024-06-27 19:31:59,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 108 transitions, 1062 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 19:31:59,688 INFO L231 Difference]: Finished difference. Result has 131 places, 90 transitions, 805 flow [2024-06-27 19:31:59,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=805, PETRI_PLACES=131, PETRI_TRANSITIONS=90} [2024-06-27 19:31:59,689 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 90 predicate places. [2024-06-27 19:31:59,689 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 90 transitions, 805 flow [2024-06-27 19:31:59,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:59,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:59,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:59,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 19:31:59,689 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:31:59,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:59,690 INFO L85 PathProgramCache]: Analyzing trace with hash 343770102, now seen corresponding path program 5 times [2024-06-27 19:31:59,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:59,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246586095] [2024-06-27 19:31:59,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:59,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:59,741 INFO 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 19:31:59,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:59,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246586095] [2024-06-27 19:31:59,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246586095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:59,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:59,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:31:59,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876941541] [2024-06-27 19:31:59,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:59,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:31:59,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:59,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:31:59,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:31:59,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:31:59,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 90 transitions, 805 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:59,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:59,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:31:59,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:59,949 INFO L124 PetriNetUnfolderBase]: 1070/1892 cut-off events. [2024-06-27 19:31:59,950 INFO L125 PetriNetUnfolderBase]: For 57432/57432 co-relation queries the response was YES. [2024-06-27 19:31:59,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9411 conditions, 1892 events. 1070/1892 cut-off events. For 57432/57432 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 11331 event pairs, 503 based on Foata normal form. 24/1915 useless extension candidates. Maximal degree in co-relation 9352. Up to 1295 conditions per place. [2024-06-27 19:31:59,961 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 65 selfloop transitions, 22 changer transitions 13/108 dead transitions. [2024-06-27 19:31:59,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 108 transitions, 1151 flow [2024-06-27 19:31:59,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:31:59,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:31:59,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-27 19:31:59,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5642857142857143 [2024-06-27 19:31:59,962 INFO L175 Difference]: Start difference. First operand has 131 places, 90 transitions, 805 flow. Second operand 7 states and 158 transitions. [2024-06-27 19:31:59,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 108 transitions, 1151 flow [2024-06-27 19:32:00,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 108 transitions, 1113 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 19:32:00,002 INFO L231 Difference]: Finished difference. Result has 129 places, 84 transitions, 764 flow [2024-06-27 19:32:00,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=764, PETRI_PLACES=129, PETRI_TRANSITIONS=84} [2024-06-27 19:32:00,003 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 88 predicate places. [2024-06-27 19:32:00,003 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 84 transitions, 764 flow [2024-06-27 19:32:00,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:32:00,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:32:00,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:32:00,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 19:32:00,003 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:32:00,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:32:00,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1919782944, now seen corresponding path program 6 times [2024-06-27 19:32:00,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:32:00,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307797547] [2024-06-27 19:32:00,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:32:00,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:32:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:32:00,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:32:00,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:32:00,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307797547] [2024-06-27 19:32:00,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307797547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:32:00,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:32:00,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:32:00,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938447726] [2024-06-27 19:32:00,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:32:00,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:32:00,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:32:00,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:32:00,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:32:00,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:32:00,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 84 transitions, 764 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:32:00,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:32:00,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:32:00,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:32:00,253 INFO L124 PetriNetUnfolderBase]: 914/1622 cut-off events. [2024-06-27 19:32:00,253 INFO L125 PetriNetUnfolderBase]: For 45632/45640 co-relation queries the response was YES. [2024-06-27 19:32:00,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7686 conditions, 1622 events. 914/1622 cut-off events. For 45632/45640 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 9393 event pairs, 458 based on Foata normal form. 34/1653 useless extension candidates. Maximal degree in co-relation 7628. Up to 1295 conditions per place. [2024-06-27 19:32:00,261 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 54 selfloop transitions, 19 changer transitions 14/95 dead transitions. [2024-06-27 19:32:00,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 95 transitions, 984 flow [2024-06-27 19:32:00,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:32:00,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:32:00,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-06-27 19:32:00,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5392857142857143 [2024-06-27 19:32:00,262 INFO L175 Difference]: Start difference. First operand has 129 places, 84 transitions, 764 flow. Second operand 7 states and 151 transitions. [2024-06-27 19:32:00,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 95 transitions, 984 flow [2024-06-27 19:32:00,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 95 transitions, 937 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 19:32:00,291 INFO L231 Difference]: Finished difference. Result has 126 places, 78 transitions, 711 flow [2024-06-27 19:32:00,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=711, PETRI_PLACES=126, PETRI_TRANSITIONS=78} [2024-06-27 19:32:00,292 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 85 predicate places. [2024-06-27 19:32:00,292 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 78 transitions, 711 flow [2024-06-27 19:32:00,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:32:00,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:32:00,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:32:00,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 19:32:00,293 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:32:00,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:32:00,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1919629122, now seen corresponding path program 13 times [2024-06-27 19:32:00,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:32:00,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903292920] [2024-06-27 19:32:00,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:32:00,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:32:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:32:00,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:32:00,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:32:00,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903292920] [2024-06-27 19:32:00,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903292920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:32:00,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:32:00,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:32:00,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864261797] [2024-06-27 19:32:00,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:32:00,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:32:00,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:32:00,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:32:00,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:32:00,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:32:00,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 78 transitions, 711 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:32:00,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:32:00,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:32:00,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:32:00,541 INFO L124 PetriNetUnfolderBase]: 781/1415 cut-off events. [2024-06-27 19:32:00,542 INFO L125 PetriNetUnfolderBase]: For 28629/28629 co-relation queries the response was YES. [2024-06-27 19:32:00,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6134 conditions, 1415 events. 781/1415 cut-off events. For 28629/28629 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 8059 event pairs, 334 based on Foata normal form. 24/1436 useless extension candidates. Maximal degree in co-relation 6078. Up to 845 conditions per place. [2024-06-27 19:32:00,548 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 50 selfloop transitions, 10 changer transitions 27/95 dead transitions. [2024-06-27 19:32:00,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 95 transitions, 967 flow [2024-06-27 19:32:00,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:32:00,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:32:00,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-27 19:32:00,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-27 19:32:00,549 INFO L175 Difference]: Start difference. First operand has 126 places, 78 transitions, 711 flow. Second operand 7 states and 154 transitions. [2024-06-27 19:32:00,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 95 transitions, 967 flow [2024-06-27 19:32:00,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 95 transitions, 925 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 19:32:00,569 INFO L231 Difference]: Finished difference. Result has 123 places, 66 transitions, 561 flow [2024-06-27 19:32:00,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=561, PETRI_PLACES=123, PETRI_TRANSITIONS=66} [2024-06-27 19:32:00,569 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 82 predicate places. [2024-06-27 19:32:00,569 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 66 transitions, 561 flow [2024-06-27 19:32:00,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:32:00,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:32:00,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:32:00,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 19:32:00,570 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:32:00,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:32:00,570 INFO L85 PathProgramCache]: Analyzing trace with hash 2126282562, now seen corresponding path program 14 times [2024-06-27 19:32:00,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:32:00,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15279910] [2024-06-27 19:32:00,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:32:00,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:32:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:32:00,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:32:00,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:32:00,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15279910] [2024-06-27 19:32:00,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15279910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:32:00,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:32:00,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:32:00,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400945864] [2024-06-27 19:32:00,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:32:00,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:32:00,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:32:00,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:32:00,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:32:00,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:32:00,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 66 transitions, 561 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:32:00,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:32:00,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:32:00,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:32:00,788 INFO L124 PetriNetUnfolderBase]: 589/1099 cut-off events. [2024-06-27 19:32:00,788 INFO L125 PetriNetUnfolderBase]: For 23571/23571 co-relation queries the response was YES. [2024-06-27 19:32:00,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4757 conditions, 1099 events. 589/1099 cut-off events. For 23571/23571 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5947 event pairs, 157 based on Foata normal form. 18/1114 useless extension candidates. Maximal degree in co-relation 4712. Up to 368 conditions per place. [2024-06-27 19:32:00,794 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 51 selfloop transitions, 11 changer transitions 14/84 dead transitions. [2024-06-27 19:32:00,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 84 transitions, 833 flow [2024-06-27 19:32:00,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:32:00,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:32:00,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-27 19:32:00,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-27 19:32:00,795 INFO L175 Difference]: Start difference. First operand has 123 places, 66 transitions, 561 flow. Second operand 7 states and 154 transitions. [2024-06-27 19:32:00,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 84 transitions, 833 flow [2024-06-27 19:32:00,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 84 transitions, 793 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 19:32:00,809 INFO L231 Difference]: Finished difference. Result has 112 places, 58 transitions, 467 flow [2024-06-27 19:32:00,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=467, PETRI_PLACES=112, PETRI_TRANSITIONS=58} [2024-06-27 19:32:00,824 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 71 predicate places. [2024-06-27 19:32:00,824 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 58 transitions, 467 flow [2024-06-27 19:32:00,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:32:00,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:32:00,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:32:00,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 19:32:00,825 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:32:00,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:32:00,825 INFO L85 PathProgramCache]: Analyzing trace with hash 2126638752, now seen corresponding path program 15 times [2024-06-27 19:32:00,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:32:00,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121110937] [2024-06-27 19:32:00,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:32:00,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:32:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:32:00,894 INFO 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 19:32:00,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:32:00,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121110937] [2024-06-27 19:32:00,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121110937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:32:00,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:32:00,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:32:00,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339964511] [2024-06-27 19:32:00,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:32:00,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:32:00,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:32:00,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:32:00,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:32:00,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:32:00,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 58 transitions, 467 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:32:00,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:32:00,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:32:00,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:32:01,028 INFO L124 PetriNetUnfolderBase]: 352/684 cut-off events. [2024-06-27 19:32:01,029 INFO L125 PetriNetUnfolderBase]: For 12049/12049 co-relation queries the response was YES. [2024-06-27 19:32:01,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2793 conditions, 684 events. 352/684 cut-off events. For 12049/12049 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3348 event pairs, 139 based on Foata normal form. 18/699 useless extension candidates. Maximal degree in co-relation 2752. Up to 368 conditions per place. [2024-06-27 19:32:01,032 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 30 selfloop transitions, 3 changer transitions 32/73 dead transitions. [2024-06-27 19:32:01,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 73 transitions, 649 flow [2024-06-27 19:32:01,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:32:01,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:32:01,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-06-27 19:32:01,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-27 19:32:01,033 INFO L175 Difference]: Start difference. First operand has 112 places, 58 transitions, 467 flow. Second operand 7 states and 150 transitions. [2024-06-27 19:32:01,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 73 transitions, 649 flow [2024-06-27 19:32:01,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 73 transitions, 618 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 19:32:01,041 INFO L231 Difference]: Finished difference. Result has 106 places, 40 transitions, 267 flow [2024-06-27 19:32:01,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=267, PETRI_PLACES=106, PETRI_TRANSITIONS=40} [2024-06-27 19:32:01,042 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 65 predicate places. [2024-06-27 19:32:01,042 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 40 transitions, 267 flow [2024-06-27 19:32:01,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:32:01,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:32:01,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:32:01,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 19:32:01,043 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:32:01,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:32:01,043 INFO L85 PathProgramCache]: Analyzing trace with hash -69500284, now seen corresponding path program 7 times [2024-06-27 19:32:01,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:32:01,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107791725] [2024-06-27 19:32:01,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:32:01,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:32:01,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:32:01,110 INFO 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 19:32:01,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:32:01,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107791725] [2024-06-27 19:32:01,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107791725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:32:01,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:32:01,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:32:01,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398911445] [2024-06-27 19:32:01,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:32:01,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:32:01,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:32:01,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:32:01,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:32:01,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:32:01,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 40 transitions, 267 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:32:01,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:32:01,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:32:01,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:32:01,258 INFO L124 PetriNetUnfolderBase]: 361/668 cut-off events. [2024-06-27 19:32:01,258 INFO L125 PetriNetUnfolderBase]: For 13220/13220 co-relation queries the response was YES. [2024-06-27 19:32:01,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2897 conditions, 668 events. 361/668 cut-off events. For 13220/13220 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3288 event pairs, 129 based on Foata normal form. 18/680 useless extension candidates. Maximal degree in co-relation 2859. Up to 290 conditions per place. [2024-06-27 19:32:01,261 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 38 selfloop transitions, 5 changer transitions 8/59 dead transitions. [2024-06-27 19:32:01,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 59 transitions, 487 flow [2024-06-27 19:32:01,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:32:01,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:32:01,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-06-27 19:32:01,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5392857142857143 [2024-06-27 19:32:01,262 INFO L175 Difference]: Start difference. First operand has 106 places, 40 transitions, 267 flow. Second operand 7 states and 151 transitions. [2024-06-27 19:32:01,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 59 transitions, 487 flow [2024-06-27 19:32:01,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 59 transitions, 426 flow, removed 23 selfloop flow, removed 15 redundant places. [2024-06-27 19:32:01,266 INFO L231 Difference]: Finished difference. Result has 79 places, 38 transitions, 221 flow [2024-06-27 19:32:01,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=221, PETRI_PLACES=79, PETRI_TRANSITIONS=38} [2024-06-27 19:32:01,267 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 38 predicate places. [2024-06-27 19:32:01,267 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 38 transitions, 221 flow [2024-06-27 19:32:01,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:32:01,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:32:01,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:32:01,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 19:32:01,267 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:32:01,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:32:01,268 INFO L85 PathProgramCache]: Analyzing trace with hash -65036284, now seen corresponding path program 8 times [2024-06-27 19:32:01,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:32:01,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213208466] [2024-06-27 19:32:01,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:32:01,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:32:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:32:01,343 INFO 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 19:32:01,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:32:01,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213208466] [2024-06-27 19:32:01,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213208466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:32:01,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:32:01,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:32:01,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426457625] [2024-06-27 19:32:01,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:32:01,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:32:01,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:32:01,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:32:01,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:32:01,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:32:01,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 38 transitions, 221 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:32:01,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:32:01,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:32:01,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:32:01,478 INFO L124 PetriNetUnfolderBase]: 256/483 cut-off events. [2024-06-27 19:32:01,478 INFO L125 PetriNetUnfolderBase]: For 4099/4099 co-relation queries the response was YES. [2024-06-27 19:32:01,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1795 conditions, 483 events. 256/483 cut-off events. For 4099/4099 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2148 event pairs, 111 based on Foata normal form. 18/497 useless extension candidates. Maximal degree in co-relation 1767. Up to 290 conditions per place. [2024-06-27 19:32:01,480 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 25 selfloop transitions, 2 changer transitions 17/52 dead transitions. [2024-06-27 19:32:01,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 52 transitions, 359 flow [2024-06-27 19:32:01,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:32:01,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:32:01,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 145 transitions. [2024-06-27 19:32:01,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-27 19:32:01,481 INFO L175 Difference]: Start difference. First operand has 79 places, 38 transitions, 221 flow. Second operand 7 states and 145 transitions. [2024-06-27 19:32:01,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 52 transitions, 359 flow [2024-06-27 19:32:01,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 52 transitions, 346 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 19:32:01,483 INFO L231 Difference]: Finished difference. Result has 78 places, 34 transitions, 182 flow [2024-06-27 19:32:01,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=182, PETRI_PLACES=78, PETRI_TRANSITIONS=34} [2024-06-27 19:32:01,484 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 37 predicate places. [2024-06-27 19:32:01,484 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 34 transitions, 182 flow [2024-06-27 19:32:01,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:32:01,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:32:01,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:32:01,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 19:32:01,484 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:32:01,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:32:01,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1797295212, now seen corresponding path program 9 times [2024-06-27 19:32:01,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:32:01,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335903001] [2024-06-27 19:32:01,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:32:01,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:32:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:32:01,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:32:01,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:32:01,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335903001] [2024-06-27 19:32:01,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335903001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:32:01,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:32:01,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:32:01,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284589252] [2024-06-27 19:32:01,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:32:01,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:32:01,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:32:01,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:32:01,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:32:01,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:32:01,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 34 transitions, 182 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:32:01,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:32:01,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:32:01,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:32:01,674 INFO L124 PetriNetUnfolderBase]: 310/591 cut-off events. [2024-06-27 19:32:01,675 INFO L125 PetriNetUnfolderBase]: For 4963/4963 co-relation queries the response was YES. [2024-06-27 19:32:01,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2248 conditions, 591 events. 310/591 cut-off events. For 4963/4963 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2833 event pairs, 32 based on Foata normal form. 18/607 useless extension candidates. Maximal degree in co-relation 2221. Up to 211 conditions per place. [2024-06-27 19:32:01,677 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 31 selfloop transitions, 5 changer transitions 8/52 dead transitions. [2024-06-27 19:32:01,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 52 transitions, 372 flow [2024-06-27 19:32:01,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:32:01,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:32:01,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-06-27 19:32:01,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-06-27 19:32:01,678 INFO L175 Difference]: Start difference. First operand has 78 places, 34 transitions, 182 flow. Second operand 7 states and 147 transitions. [2024-06-27 19:32:01,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 52 transitions, 372 flow [2024-06-27 19:32:01,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 52 transitions, 354 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 19:32:01,680 INFO L231 Difference]: Finished difference. Result has 71 places, 32 transitions, 167 flow [2024-06-27 19:32:01,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=167, PETRI_PLACES=71, PETRI_TRANSITIONS=32} [2024-06-27 19:32:01,681 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 30 predicate places. [2024-06-27 19:32:01,681 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 32 transitions, 167 flow [2024-06-27 19:32:01,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:32:01,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:32:01,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:32:01,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 19:32:01,682 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:32:01,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:32:01,682 INFO L85 PathProgramCache]: Analyzing trace with hash -887696970, now seen corresponding path program 10 times [2024-06-27 19:32:01,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:32:01,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205468239] [2024-06-27 19:32:01,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:32:01,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:32:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:32:01,756 INFO 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 19:32:01,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:32:01,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205468239] [2024-06-27 19:32:01,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205468239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:32:01,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:32:01,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:32:01,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692216318] [2024-06-27 19:32:01,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:32:01,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:32:01,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:32:01,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:32:01,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:32:01,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:32:01,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 32 transitions, 167 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:32:01,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:32:01,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:32:01,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:32:01,880 INFO L124 PetriNetUnfolderBase]: 205/398 cut-off events. [2024-06-27 19:32:01,880 INFO L125 PetriNetUnfolderBase]: For 2725/2725 co-relation queries the response was YES. [2024-06-27 19:32:01,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1456 conditions, 398 events. 205/398 cut-off events. For 2725/2725 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1663 event pairs, 58 based on Foata normal form. 18/416 useless extension candidates. Maximal degree in co-relation 1431. Up to 204 conditions per place. [2024-06-27 19:32:01,881 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 21 selfloop transitions, 3 changer transitions 15/47 dead transitions. [2024-06-27 19:32:01,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 47 transitions, 297 flow [2024-06-27 19:32:01,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:32:01,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:32:01,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 145 transitions. [2024-06-27 19:32:01,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-27 19:32:01,882 INFO L175 Difference]: Start difference. First operand has 71 places, 32 transitions, 167 flow. Second operand 7 states and 145 transitions. [2024-06-27 19:32:01,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 47 transitions, 297 flow [2024-06-27 19:32:01,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 47 transitions, 280 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 19:32:01,884 INFO L231 Difference]: Finished difference. Result has 69 places, 29 transitions, 138 flow [2024-06-27 19:32:01,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=138, PETRI_PLACES=69, PETRI_TRANSITIONS=29} [2024-06-27 19:32:01,884 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 28 predicate places. [2024-06-27 19:32:01,884 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 29 transitions, 138 flow [2024-06-27 19:32:01,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:32:01,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:32:01,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:32:01,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 19:32:01,885 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:32:01,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:32:01,885 INFO L85 PathProgramCache]: Analyzing trace with hash 313994132, now seen corresponding path program 11 times [2024-06-27 19:32:01,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:32:01,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560867258] [2024-06-27 19:32:01,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:32:01,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:32:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:32:01,951 INFO 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 19:32:01,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:32:01,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560867258] [2024-06-27 19:32:01,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560867258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:32:01,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:32:01,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:32:01,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178076552] [2024-06-27 19:32:01,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:32:01,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:32:01,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:32:01,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:32:01,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:32:02,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-27 19:32:02,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 29 transitions, 138 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:32:02,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:32:02,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-27 19:32:02,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:32:02,060 INFO L124 PetriNetUnfolderBase]: 96/207 cut-off events. [2024-06-27 19:32:02,060 INFO L125 PetriNetUnfolderBase]: For 1171/1171 co-relation queries the response was YES. [2024-06-27 19:32:02,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 661 conditions, 207 events. 96/207 cut-off events. For 1171/1171 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 666 event pairs, 2 based on Foata normal form. 18/225 useless extension candidates. Maximal degree in co-relation 637. Up to 96 conditions per place. [2024-06-27 19:32:02,060 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 0 selfloop transitions, 0 changer transitions 39/39 dead transitions. [2024-06-27 19:32:02,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 39 transitions, 222 flow [2024-06-27 19:32:02,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:32:02,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:32:02,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-27 19:32:02,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48928571428571427 [2024-06-27 19:32:02,061 INFO L175 Difference]: Start difference. First operand has 69 places, 29 transitions, 138 flow. Second operand 7 states and 137 transitions. [2024-06-27 19:32:02,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 39 transitions, 222 flow [2024-06-27 19:32:02,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 39 transitions, 180 flow, removed 9 selfloop flow, removed 14 redundant places. [2024-06-27 19:32:02,062 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2024-06-27 19:32:02,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2024-06-27 19:32:02,063 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2024-06-27 19:32:02,063 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2024-06-27 19:32:02,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:32:02,065 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-27 19:32:02,065 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-27 19:32:02,065 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-27 19:32:02,065 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-27 19:32:02,066 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-27 19:32:02,066 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-27 19:32:02,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 19:32:02,066 INFO L445 BasicCegarLoop]: Path program histogram: [15, 15, 14, 12, 11, 9, 9, 7, 6, 6, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:32:02,068 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 19:32:02,068 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 19:32:02,073 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-27 19:32:02,073 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-27 19:32:02,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 07:32:02 BasicIcfg [2024-06-27 19:32:02,073 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 19:32:02,074 INFO L158 Benchmark]: Toolchain (without parser) took 129515.94ms. Allocated memory was 165.7MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 126.4MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 736.7MB. Max. memory is 16.1GB. [2024-06-27 19:32:02,074 INFO L158 Benchmark]: Witness Parser took 0.10ms. Allocated memory is still 125.8MB. Free memory was 88.1MB in the beginning and 88.0MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 19:32:02,074 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 125.8MB. Free memory is still 96.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 19:32:02,074 INFO L158 Benchmark]: CACSL2BoogieTranslator took 482.82ms. Allocated memory is still 165.7MB. Free memory was 126.4MB in the beginning and 99.2MB in the end (delta: 27.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-06-27 19:32:02,074 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.48ms. Allocated memory is still 165.7MB. Free memory was 99.2MB in the beginning and 97.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 19:32:02,075 INFO L158 Benchmark]: Boogie Preprocessor took 26.16ms. Allocated memory is still 165.7MB. Free memory was 97.1MB in the beginning and 95.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 19:32:02,075 INFO L158 Benchmark]: RCFGBuilder took 431.32ms. Allocated memory is still 165.7MB. Free memory was 95.0MB in the beginning and 121.3MB in the end (delta: -26.2MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2024-06-27 19:32:02,075 INFO L158 Benchmark]: TraceAbstraction took 128534.81ms. Allocated memory was 165.7MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 120.2MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 730.3MB. Max. memory is 16.1GB. [2024-06-27 19:32:02,076 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.10ms. Allocated memory is still 125.8MB. Free memory was 88.1MB in the beginning and 88.0MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.16ms. Allocated memory is still 125.8MB. Free memory is still 96.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 482.82ms. Allocated memory is still 165.7MB. Free memory was 126.4MB in the beginning and 99.2MB in the end (delta: 27.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.48ms. Allocated memory is still 165.7MB. Free memory was 99.2MB in the beginning and 97.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.16ms. Allocated memory is still 165.7MB. Free memory was 97.1MB in the beginning and 95.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 431.32ms. Allocated memory is still 165.7MB. Free memory was 95.0MB in the beginning and 121.3MB in the end (delta: -26.2MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. * TraceAbstraction took 128534.81ms. Allocated memory was 165.7MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 120.2MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 730.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 778]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 780]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 781]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 65 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 128.5s, OverallIterations: 142, TraceHistogramMax: 1, PathProgramHistogramMax: 15, EmptinessCheckTime: 0.0s, AutomataDifference: 117.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9024 SdHoareTripleChecker+Valid, 14.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7036 mSDsluCounter, 2548 SdHoareTripleChecker+Invalid, 11.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1807 mSDsCounter, 1454 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32225 IncrementalHoareTripleChecker+Invalid, 33679 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1454 mSolverCounterUnsat, 741 mSDtfsCounter, 32225 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 808 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 808 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3130occurred in iteration=98, InterpolantAutomatonStates: 988, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 9.7s InterpolantComputationTime, 2706 NumberOfCodeBlocks, 2706 NumberOfCodeBlocksAsserted, 142 NumberOfCheckSat, 2564 ConstructedInterpolants, 0 QuantifiedInterpolants, 22316 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 142 InterpolantComputations, 142 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 19:32:02,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE