./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix014_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 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/mix014_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix014_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 17:34:43,473 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:34:43,532 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:34:43,537 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:34:43,537 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:34:43,559 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:34:43,560 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:34:43,560 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:34:43,561 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:34:43,564 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:34:43,564 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:34:43,564 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:34:43,565 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:34:43,566 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:34:43,566 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:34:43,566 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:34:43,566 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:34:43,566 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:34:43,567 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:34:43,567 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:34:43,568 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:34:43,568 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:34:43,568 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:34:43,569 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:34:43,569 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:34:43,569 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:34:43,569 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:34:43,569 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:34:43,570 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:34:43,570 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:34:43,571 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:34:43,571 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:34:43,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:34:43,571 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:34:43,572 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:34:43,572 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:34:43,572 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:34:43,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:34:43,572 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:34:43,572 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:34:43,573 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:34:43,573 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:34:43,573 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:34:43,573 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:34:43,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:34:43,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:34:43,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:34:43,836 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:34:43,836 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:34:43,837 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i [2024-01-31 17:34:44,848 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:34:45,027 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:34:45,027 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i [2024-01-31 17:34:45,039 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9930278c7/a53b34006ff647318b566b57eacc9502/FLAG7a3b15ca2 [2024-01-31 17:34:45,053 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9930278c7/a53b34006ff647318b566b57eacc9502 [2024-01-31 17:34:45,059 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:34:45,059 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:34:45,060 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix014_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-01-31 17:34:45,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:34:45,752 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:34:45,753 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:34:45,753 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:34:45,756 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:34:45,759 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:34:45" (1/2) ... [2024-01-31 17:34:45,760 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5072293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:34:45, skipping insertion in model container [2024-01-31 17:34:45,760 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:34:45" (1/2) ... [2024-01-31 17:34:45,762 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@df8ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:34:45, skipping insertion in model container [2024-01-31 17:34:45,762 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:34:45" (2/2) ... [2024-01-31 17:34:45,762 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5072293 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:34:45, skipping insertion in model container [2024-01-31 17:34:45,762 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:34:45" (2/2) ... [2024-01-31 17:34:45,763 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:34:47,977 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 17:34:47,978 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-01-31 17:34:47,978 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 17:34:48,018 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:34:48,124 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-01-31 17:34:48,254 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:34:48,262 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:34:48,270 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i[969,982] Start Parsing Local [2024-01-31 17:34:48,287 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry [2024-01-31 17:34:48,320 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:34:48,344 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:34:48,345 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:34:48 WrapperNode [2024-01-31 17:34:48,345 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:34:48,346 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:34:48,346 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:34:48,346 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:34:48,350 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:34:48" (1/1) ... [2024-01-31 17:34:48,360 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:34:48" (1/1) ... [2024-01-31 17:34:48,377 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 147 [2024-01-31 17:34:48,378 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:34:48,378 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:34:48,378 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:34:48,378 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:34:48,386 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:34:48" (1/1) ... [2024-01-31 17:34:48,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:34:48" (1/1) ... [2024-01-31 17:34:48,389 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:34:48" (1/1) ... [2024-01-31 17:34:48,400 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-31 17:34:48,401 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:34:48" (1/1) ... [2024-01-31 17:34:48,401 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:34:48" (1/1) ... [2024-01-31 17:34:48,406 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:34:48" (1/1) ... [2024-01-31 17:34:48,407 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:34:48" (1/1) ... [2024-01-31 17:34:48,408 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:34:48" (1/1) ... [2024-01-31 17:34:48,410 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:34:48" (1/1) ... [2024-01-31 17:34:48,412 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:34:48,412 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:34:48,412 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:34:48,413 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:34:48,413 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:34:48" (1/1) ... [2024-01-31 17:34:48,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:34:48,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:34:48,434 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) [2024-01-31 17:34:48,450 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 [2024-01-31 17:34:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:34:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:34:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:34:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:34:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 17:34:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:34:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:34:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:34:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:34:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-31 17:34:48,462 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-31 17:34:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-31 17:34:48,462 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-31 17:34:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-31 17:34:48,463 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-31 17:34:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-01-31 17:34:48,463 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-01-31 17:34:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:34:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:34:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:34:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:34:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 17:34:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:34:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:34:48,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:34:48,465 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 17:34:48,574 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:34:48,575 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:34:48,818 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:34:48,819 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:34:48,978 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:34:48,978 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 17:34:48,979 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:34:48 BoogieIcfgContainer [2024-01-31 17:34:48,979 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:34:48,981 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:34:48,981 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:34:48,984 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:34:48,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:34:45" (1/4) ... [2024-01-31 17:34:48,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b3778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:34:48, skipping insertion in model container [2024-01-31 17:34:48,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:34:45" (2/4) ... [2024-01-31 17:34:48,985 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b3778 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:34:48, skipping insertion in model container [2024-01-31 17:34:48,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:34:48" (3/4) ... [2024-01-31 17:34:48,985 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b3778 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:34:48, skipping insertion in model container [2024-01-31 17:34:48,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:34:48" (4/4) ... [2024-01-31 17:34:48,986 INFO L112 eAbstractionObserver]: Analyzing ICFG mix014_power.oepc_pso.oepc_rmo.oepc.i [2024-01-31 17:34:48,999 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:34:48,999 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-01-31 17:34:48,999 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:34:49,045 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 17:34:49,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 53 transitions, 122 flow [2024-01-31 17:34:49,107 INFO L124 PetriNetUnfolderBase]: 1/49 cut-off events. [2024-01-31 17:34:49,107 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:34:49,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 49 events. 1/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 110 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2024-01-31 17:34:49,112 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 53 transitions, 122 flow [2024-01-31 17:34:49,115 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 49 transitions, 110 flow [2024-01-31 17:34:49,127 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:34:49,133 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;@2627fa50, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:34:49,133 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-01-31 17:34:49,138 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:34:49,138 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-01-31 17:34:49,138 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:34:49,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:34:49,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 17:34:49,139 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:34:49,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:34:49,143 INFO L85 PathProgramCache]: Analyzing trace with hash 12676058, now seen corresponding path program 1 times [2024-01-31 17:34:49,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:34:49,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576657284] [2024-01-31 17:34:49,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:34:49,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:34:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:34:49,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:34:49,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:34:49,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576657284] [2024-01-31 17:34:49,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576657284] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:34:49,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:34:49,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:34:49,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559449984] [2024-01-31 17:34:49,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:34:49,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-31 17:34:49,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:34:49,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-31 17:34:49,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-31 17:34:49,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2024-01-31 17:34:49,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 110 flow. Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:34:49,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:34:49,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2024-01-31 17:34:49,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:34:49,976 INFO L124 PetriNetUnfolderBase]: 3179/5513 cut-off events. [2024-01-31 17:34:49,976 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:34:49,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10041 conditions, 5513 events. 3179/5513 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 41706 event pairs, 3179 based on Foata normal form. 135/5024 useless extension candidates. Maximal degree in co-relation 10029. Up to 4391 conditions per place. [2024-01-31 17:34:50,070 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 24 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2024-01-31 17:34:50,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 47 transitions, 154 flow [2024-01-31 17:34:50,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-31 17:34:50,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-31 17:34:50,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2024-01-31 17:34:50,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7547169811320755 [2024-01-31 17:34:50,080 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 110 flow. Second operand 2 states and 80 transitions. [2024-01-31 17:34:50,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 47 transitions, 154 flow [2024-01-31 17:34:50,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 47 transitions, 150 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 17:34:50,085 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 102 flow [2024-01-31 17:34:50,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=102, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2024-01-31 17:34:50,089 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2024-01-31 17:34:50,089 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 102 flow [2024-01-31 17:34:50,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:34:50,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:34:50,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 17:34:50,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:34:50,090 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:34:50,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:34:50,091 INFO L85 PathProgramCache]: Analyzing trace with hash 12676059, now seen corresponding path program 1 times [2024-01-31 17:34:50,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:34:50,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441458261] [2024-01-31 17:34:50,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:34:50,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:34:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:34:50,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:34:50,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:34:50,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441458261] [2024-01-31 17:34:50,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441458261] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:34:50,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:34:50,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:34:50,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767750711] [2024-01-31 17:34:50,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:34:50,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:34:50,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:34:50,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:34:50,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:34:50,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2024-01-31 17:34:50,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 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) [2024-01-31 17:34:50,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:34:50,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2024-01-31 17:34:50,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:34:50,610 INFO L124 PetriNetUnfolderBase]: 2495/4173 cut-off events. [2024-01-31 17:34:50,610 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:34:50,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7746 conditions, 4173 events. 2495/4173 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 29692 event pairs, 443 based on Foata normal form. 0/4082 useless extension candidates. Maximal degree in co-relation 7743. Up to 2779 conditions per place. [2024-01-31 17:34:50,629 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 37 selfloop transitions, 2 changer transitions 2/64 dead transitions. [2024-01-31 17:34:50,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 64 transitions, 224 flow [2024-01-31 17:34:50,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:34:50,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:34:50,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-01-31 17:34:50,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7735849056603774 [2024-01-31 17:34:50,634 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 102 flow. Second operand 3 states and 123 transitions. [2024-01-31 17:34:50,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 64 transitions, 224 flow [2024-01-31 17:34:50,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 64 transitions, 224 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:34:50,642 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 102 flow [2024-01-31 17:34:50,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2024-01-31 17:34:50,643 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2024-01-31 17:34:50,643 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 102 flow [2024-01-31 17:34:50,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 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) [2024-01-31 17:34:50,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:34:50,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:34:50,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:34:50,644 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:34:50,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:34:50,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1144742165, now seen corresponding path program 1 times [2024-01-31 17:34:50,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:34:50,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375448236] [2024-01-31 17:34:50,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:34:50,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:34:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:34:50,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:34:50,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:34:50,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375448236] [2024-01-31 17:34:50,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375448236] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:34:50,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:34:50,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:34:50,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093063142] [2024-01-31 17:34:50,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:34:50,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:34:50,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:34:50,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:34:50,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:34:50,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 53 [2024-01-31 17:34:50,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:34:50,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:34:50,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 53 [2024-01-31 17:34:50,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:34:51,291 INFO L124 PetriNetUnfolderBase]: 3311/5215 cut-off events. [2024-01-31 17:34:51,291 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-01-31 17:34:51,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10208 conditions, 5215 events. 3311/5215 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 35592 event pairs, 2495 based on Foata normal form. 0/4945 useless extension candidates. Maximal degree in co-relation 10204. Up to 3465 conditions per place. [2024-01-31 17:34:51,318 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 33 selfloop transitions, 1 changer transitions 1/54 dead transitions. [2024-01-31 17:34:51,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 192 flow [2024-01-31 17:34:51,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:34:51,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:34:51,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-01-31 17:34:51,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.660377358490566 [2024-01-31 17:34:51,320 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 102 flow. Second operand 3 states and 105 transitions. [2024-01-31 17:34:51,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 192 flow [2024-01-31 17:34:51,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:34:51,321 INFO L231 Difference]: Finished difference. Result has 56 places, 43 transitions, 96 flow [2024-01-31 17:34:51,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=56, PETRI_TRANSITIONS=43} [2024-01-31 17:34:51,322 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2024-01-31 17:34:51,322 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 43 transitions, 96 flow [2024-01-31 17:34:51,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:34:51,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:34:51,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:34:51,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:34:51,323 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:34:51,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:34:51,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1127269172, now seen corresponding path program 1 times [2024-01-31 17:34:51,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:34:51,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656856426] [2024-01-31 17:34:51,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:34:51,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:34:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:34:51,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:34:51,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:34:51,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656856426] [2024-01-31 17:34:51,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656856426] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:34:51,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:34:51,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:34:51,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326701551] [2024-01-31 17:34:51,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:34:51,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:34:51,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:34:51,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:34:51,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:34:51,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-01-31 17:34:51,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:34:51,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:34:51,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-01-31 17:34:51,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:34:54,841 INFO L124 PetriNetUnfolderBase]: 29016/41917 cut-off events. [2024-01-31 17:34:54,841 INFO L125 PetriNetUnfolderBase]: For 952/952 co-relation queries the response was YES. [2024-01-31 17:34:54,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82398 conditions, 41917 events. 29016/41917 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 1771. Compared 299999 event pairs, 10865 based on Foata normal form. 957/42773 useless extension candidates. Maximal degree in co-relation 82394. Up to 22628 conditions per place. [2024-01-31 17:34:55,030 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 49 selfloop transitions, 8 changer transitions 67/136 dead transitions. [2024-01-31 17:34:55,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 136 transitions, 536 flow [2024-01-31 17:34:55,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:34:55,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:34:55,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 238 transitions. [2024-01-31 17:34:55,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6415094339622641 [2024-01-31 17:34:55,033 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 96 flow. Second operand 7 states and 238 transitions. [2024-01-31 17:34:55,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 136 transitions, 536 flow [2024-01-31 17:34:55,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 136 transitions, 534 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:34:55,227 INFO L231 Difference]: Finished difference. Result has 66 places, 50 transitions, 193 flow [2024-01-31 17:34:55,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=193, PETRI_PLACES=66, PETRI_TRANSITIONS=50} [2024-01-31 17:34:55,227 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 5 predicate places. [2024-01-31 17:34:55,228 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 50 transitions, 193 flow [2024-01-31 17:34:55,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:34:55,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:34:55,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:34:55,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:34:55,228 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:34:55,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:34:55,229 INFO L85 PathProgramCache]: Analyzing trace with hash -199338259, now seen corresponding path program 1 times [2024-01-31 17:34:55,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:34:55,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488732773] [2024-01-31 17:34:55,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:34:55,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:34:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:34:55,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:34:55,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:34:55,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488732773] [2024-01-31 17:34:55,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488732773] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:34:55,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:34:55,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:34:55,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165812755] [2024-01-31 17:34:55,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:34:55,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:34:55,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:34:55,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:34:55,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:34:55,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-01-31 17:34:55,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 50 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:34:55,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:34:55,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-01-31 17:34:55,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:34:58,251 INFO L124 PetriNetUnfolderBase]: 24829/35828 cut-off events. [2024-01-31 17:34:58,252 INFO L125 PetriNetUnfolderBase]: For 34143/34803 co-relation queries the response was YES. [2024-01-31 17:34:58,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101822 conditions, 35828 events. 24829/35828 cut-off events. For 34143/34803 co-relation queries the response was YES. Maximal size of possible extension queue 1428. Compared 251531 event pairs, 4982 based on Foata normal form. 957/36672 useless extension candidates. Maximal degree in co-relation 101813. Up to 15173 conditions per place. [2024-01-31 17:34:58,633 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 69 selfloop transitions, 8 changer transitions 92/181 dead transitions. [2024-01-31 17:34:58,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 181 transitions, 1054 flow [2024-01-31 17:34:58,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:34:58,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:34:58,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 316 transitions. [2024-01-31 17:34:58,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5962264150943396 [2024-01-31 17:34:58,649 INFO L175 Difference]: Start difference. First operand has 66 places, 50 transitions, 193 flow. Second operand 10 states and 316 transitions. [2024-01-31 17:34:58,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 181 transitions, 1054 flow [2024-01-31 17:34:58,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 181 transitions, 972 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-01-31 17:34:58,872 INFO L231 Difference]: Finished difference. Result has 78 places, 54 transitions, 259 flow [2024-01-31 17:34:58,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=259, PETRI_PLACES=78, PETRI_TRANSITIONS=54} [2024-01-31 17:34:58,872 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 17 predicate places. [2024-01-31 17:34:58,873 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 54 transitions, 259 flow [2024-01-31 17:34:58,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:34:58,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:34:58,873 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] [2024-01-31 17:34:58,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 17:34:58,873 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:34:58,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:34:58,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1435052226, now seen corresponding path program 1 times [2024-01-31 17:34:58,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:34:58,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164759324] [2024-01-31 17:34:58,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:34:58,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:34:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:34:58,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:34:58,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:34:58,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164759324] [2024-01-31 17:34:58,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164759324] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:34:58,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:34:58,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:34:58,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892709886] [2024-01-31 17:34:58,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:34:58,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:34:58,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:34:58,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:34:58,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:34:58,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-01-31 17:34:58,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 54 transitions, 259 flow. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 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) [2024-01-31 17:34:58,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:34:58,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-01-31 17:34:58,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:01,273 INFO L124 PetriNetUnfolderBase]: 15685/24468 cut-off events. [2024-01-31 17:35:01,274 INFO L125 PetriNetUnfolderBase]: For 31780/33896 co-relation queries the response was YES. [2024-01-31 17:35:01,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66740 conditions, 24468 events. 15685/24468 cut-off events. For 31780/33896 co-relation queries the response was YES. Maximal size of possible extension queue 1070. Compared 187762 event pairs, 4654 based on Foata normal form. 830/24624 useless extension candidates. Maximal degree in co-relation 66723. Up to 14860 conditions per place. [2024-01-31 17:35:01,445 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 36 selfloop transitions, 4 changer transitions 43/107 dead transitions. [2024-01-31 17:35:01,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 107 transitions, 599 flow [2024-01-31 17:35:01,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:35:01,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:35:01,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 224 transitions. [2024-01-31 17:35:01,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6037735849056604 [2024-01-31 17:35:01,446 INFO L175 Difference]: Start difference. First operand has 78 places, 54 transitions, 259 flow. Second operand 7 states and 224 transitions. [2024-01-31 17:35:01,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 107 transitions, 599 flow [2024-01-31 17:35:02,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 107 transitions, 568 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-01-31 17:35:02,067 INFO L231 Difference]: Finished difference. Result has 78 places, 54 transitions, 262 flow [2024-01-31 17:35:02,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=262, PETRI_PLACES=78, PETRI_TRANSITIONS=54} [2024-01-31 17:35:02,067 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 17 predicate places. [2024-01-31 17:35:02,068 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 54 transitions, 262 flow [2024-01-31 17:35:02,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 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) [2024-01-31 17:35:02,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:02,068 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, 1] [2024-01-31 17:35:02,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 17:35:02,068 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:02,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:02,069 INFO L85 PathProgramCache]: Analyzing trace with hash 627986239, now seen corresponding path program 1 times [2024-01-31 17:35:02,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:02,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674221508] [2024-01-31 17:35:02,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:02,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:02,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:35:02,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:02,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674221508] [2024-01-31 17:35:02,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674221508] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:02,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:02,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:35:02,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037675611] [2024-01-31 17:35:02,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:02,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:35:02,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:02,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:35:02,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:35:02,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:35:02,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 54 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:02,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:02,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:35:02,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:05,851 INFO L124 PetriNetUnfolderBase]: 28258/43426 cut-off events. [2024-01-31 17:35:05,851 INFO L125 PetriNetUnfolderBase]: For 30335/35507 co-relation queries the response was YES. [2024-01-31 17:35:06,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104741 conditions, 43426 events. 28258/43426 cut-off events. For 30335/35507 co-relation queries the response was YES. Maximal size of possible extension queue 1741. Compared 333273 event pairs, 5207 based on Foata normal form. 1895/43861 useless extension candidates. Maximal degree in co-relation 104722. Up to 20985 conditions per place. [2024-01-31 17:35:06,141 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 59 selfloop transitions, 6 changer transitions 0/90 dead transitions. [2024-01-31 17:35:06,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 90 transitions, 510 flow [2024-01-31 17:35:06,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:35:06,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:35:06,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2024-01-31 17:35:06,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7028301886792453 [2024-01-31 17:35:06,143 INFO L175 Difference]: Start difference. First operand has 78 places, 54 transitions, 262 flow. Second operand 4 states and 149 transitions. [2024-01-31 17:35:06,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 90 transitions, 510 flow [2024-01-31 17:35:06,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 90 transitions, 470 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-01-31 17:35:06,590 INFO L231 Difference]: Finished difference. Result has 69 places, 59 transitions, 276 flow [2024-01-31 17:35:06,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=276, PETRI_PLACES=69, PETRI_TRANSITIONS=59} [2024-01-31 17:35:06,591 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 8 predicate places. [2024-01-31 17:35:06,591 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 59 transitions, 276 flow [2024-01-31 17:35:06,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:06,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:06,592 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, 1, 1, 1, 1, 1, 1] [2024-01-31 17:35:06,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 17:35:06,592 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:06,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:06,592 INFO L85 PathProgramCache]: Analyzing trace with hash -897804822, now seen corresponding path program 1 times [2024-01-31 17:35:06,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:06,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266728903] [2024-01-31 17:35:06,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:06,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:06,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:35:06,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:06,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266728903] [2024-01-31 17:35:06,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266728903] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:06,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:06,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:35:06,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408102799] [2024-01-31 17:35:06,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:06,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:35:06,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:06,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:35:06,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:35:06,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:35:06,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 59 transitions, 276 flow. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:06,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:06,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:35:06,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:09,555 INFO L124 PetriNetUnfolderBase]: 23437/35979 cut-off events. [2024-01-31 17:35:09,555 INFO L125 PetriNetUnfolderBase]: For 23553/26973 co-relation queries the response was YES. [2024-01-31 17:35:09,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95000 conditions, 35979 events. 23437/35979 cut-off events. For 23553/26973 co-relation queries the response was YES. Maximal size of possible extension queue 1403. Compared 265257 event pairs, 3158 based on Foata normal form. 1629/36345 useless extension candidates. Maximal degree in co-relation 94987. Up to 12222 conditions per place. [2024-01-31 17:35:09,739 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 77 selfloop transitions, 10 changer transitions 0/112 dead transitions. [2024-01-31 17:35:09,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 112 transitions, 633 flow [2024-01-31 17:35:09,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:35:09,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:35:09,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 191 transitions. [2024-01-31 17:35:09,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.720754716981132 [2024-01-31 17:35:09,740 INFO L175 Difference]: Start difference. First operand has 69 places, 59 transitions, 276 flow. Second operand 5 states and 191 transitions. [2024-01-31 17:35:09,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 112 transitions, 633 flow [2024-01-31 17:35:09,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 112 transitions, 630 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:35:09,761 INFO L231 Difference]: Finished difference. Result has 74 places, 64 transitions, 341 flow [2024-01-31 17:35:09,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=341, PETRI_PLACES=74, PETRI_TRANSITIONS=64} [2024-01-31 17:35:09,764 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 13 predicate places. [2024-01-31 17:35:09,764 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 64 transitions, 341 flow [2024-01-31 17:35:09,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:09,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:09,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:35:09,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 17:35:09,765 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:09,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:09,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1910505212, now seen corresponding path program 1 times [2024-01-31 17:35:09,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:09,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38197827] [2024-01-31 17:35:09,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:09,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:09,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:35:09,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:09,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38197827] [2024-01-31 17:35:09,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38197827] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:09,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:09,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:35:09,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447218809] [2024-01-31 17:35:09,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:09,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:35:09,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:09,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:35:09,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:35:09,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:35:09,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 64 transitions, 341 flow. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:09,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:09,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:35:09,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:12,540 INFO L124 PetriNetUnfolderBase]: 19237/28959 cut-off events. [2024-01-31 17:35:12,540 INFO L125 PetriNetUnfolderBase]: For 39073/41658 co-relation queries the response was YES. [2024-01-31 17:35:12,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86418 conditions, 28959 events. 19237/28959 cut-off events. For 39073/41658 co-relation queries the response was YES. Maximal size of possible extension queue 1259. Compared 201619 event pairs, 2454 based on Foata normal form. 971/28728 useless extension candidates. Maximal degree in co-relation 86403. Up to 9898 conditions per place. [2024-01-31 17:35:12,694 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 91 selfloop transitions, 14 changer transitions 0/130 dead transitions. [2024-01-31 17:35:12,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 130 transitions, 788 flow [2024-01-31 17:35:12,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:35:12,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:35:12,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 231 transitions. [2024-01-31 17:35:12,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7264150943396226 [2024-01-31 17:35:12,696 INFO L175 Difference]: Start difference. First operand has 74 places, 64 transitions, 341 flow. Second operand 6 states and 231 transitions. [2024-01-31 17:35:12,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 130 transitions, 788 flow [2024-01-31 17:35:12,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 130 transitions, 772 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-01-31 17:35:12,720 INFO L231 Difference]: Finished difference. Result has 79 places, 69 transitions, 411 flow [2024-01-31 17:35:12,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=411, PETRI_PLACES=79, PETRI_TRANSITIONS=69} [2024-01-31 17:35:12,721 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 18 predicate places. [2024-01-31 17:35:12,721 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 69 transitions, 411 flow [2024-01-31 17:35:12,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:12,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:12,722 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:35:12,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 17:35:12,722 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:12,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:12,722 INFO L85 PathProgramCache]: Analyzing trace with hash 780897187, now seen corresponding path program 1 times [2024-01-31 17:35:12,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:12,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726987965] [2024-01-31 17:35:12,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:12,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:12,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:13,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:35:13,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:13,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726987965] [2024-01-31 17:35:13,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726987965] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:13,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:13,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:35:13,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060703180] [2024-01-31 17:35:13,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:13,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:35:13,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:13,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:35:13,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:35:13,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-01-31 17:35:13,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 69 transitions, 411 flow. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:13,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:13,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-01-31 17:35:13,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:17,231 INFO L124 PetriNetUnfolderBase]: 24978/40049 cut-off events. [2024-01-31 17:35:17,231 INFO L125 PetriNetUnfolderBase]: For 79852/88887 co-relation queries the response was YES. [2024-01-31 17:35:17,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128217 conditions, 40049 events. 24978/40049 cut-off events. For 79852/88887 co-relation queries the response was YES. Maximal size of possible extension queue 1969. Compared 329300 event pairs, 8041 based on Foata normal form. 1053/37990 useless extension candidates. Maximal degree in co-relation 128200. Up to 10942 conditions per place. [2024-01-31 17:35:17,488 INFO L140 encePairwiseOnDemand]: 37/53 looper letters, 130 selfloop transitions, 49 changer transitions 33/239 dead transitions. [2024-01-31 17:35:17,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 239 transitions, 1556 flow [2024-01-31 17:35:17,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-31 17:35:17,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-31 17:35:17,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 407 transitions. [2024-01-31 17:35:17,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.590711175616836 [2024-01-31 17:35:17,491 INFO L175 Difference]: Start difference. First operand has 79 places, 69 transitions, 411 flow. Second operand 13 states and 407 transitions. [2024-01-31 17:35:17,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 239 transitions, 1556 flow [2024-01-31 17:35:18,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 239 transitions, 1525 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-01-31 17:35:18,314 INFO L231 Difference]: Finished difference. Result has 97 places, 108 transitions, 815 flow [2024-01-31 17:35:18,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=815, PETRI_PLACES=97, PETRI_TRANSITIONS=108} [2024-01-31 17:35:18,315 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 36 predicate places. [2024-01-31 17:35:18,315 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 108 transitions, 815 flow [2024-01-31 17:35:18,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:18,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:18,316 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:35:18,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 17:35:18,316 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:18,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:18,316 INFO L85 PathProgramCache]: Analyzing trace with hash 974531343, now seen corresponding path program 2 times [2024-01-31 17:35:18,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:18,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571438598] [2024-01-31 17:35:18,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:18,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:18,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:35:18,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:18,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571438598] [2024-01-31 17:35:18,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571438598] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:18,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:18,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 17:35:18,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923359900] [2024-01-31 17:35:18,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:18,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 17:35:18,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:18,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 17:35:18,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-01-31 17:35:18,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:35:18,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 108 transitions, 815 flow. Second operand has 8 states, 8 states have (on average 24.5) internal successors, (196), 8 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:18,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:18,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:35:18,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand