./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix018_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/mix018_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/mix018_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix018_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 17:35:17,325 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:35:17,397 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:35:17,401 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:35:17,401 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:35:17,418 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:35:17,432 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:35:17,432 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:35:17,433 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:35:17,434 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:35:17,434 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:35:17,435 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:35:17,435 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:35:17,435 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:35:17,436 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:35:17,436 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:35:17,436 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:35:17,436 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:35:17,437 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:35:17,437 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:35:17,437 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:35:17,438 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:35:17,438 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:35:17,438 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:35:17,438 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:35:17,439 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:35:17,439 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:35:17,439 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:35:17,439 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:35:17,440 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:35:17,440 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:35:17,440 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:35:17,440 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:35:17,443 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:35:17,443 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:35:17,444 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:35:17,444 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:35:17,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:35:17,444 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:35:17,445 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:35:17,445 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:35:17,445 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:35:17,445 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:35:17,445 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:35:17,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:35:17,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:35:17,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:35:17,666 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:35:17,669 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:35:17,670 INFO L431 ainManager$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/mix018_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-01-31 17:35:18,294 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:35:18,295 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:35:18,295 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix018_power.oepc_pso.oepc_rmo.oepc.i [2024-01-31 17:35:19,338 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:35:19,584 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:35:19,585 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix018_power.oepc_pso.oepc_rmo.oepc.i [2024-01-31 17:35:19,600 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0edf5a47d/c4d4c8a762384eed9fef4ffea940471f/FLAGa09bdea7a [2024-01-31 17:35:19,610 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0edf5a47d/c4d4c8a762384eed9fef4ffea940471f [2024-01-31 17:35:19,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:35:19,612 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:35:19,613 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:35:19,613 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:35:19,617 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:35:19,617 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:35:18" (1/2) ... [2024-01-31 17:35:19,618 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@589e2894 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:35:19, skipping insertion in model container [2024-01-31 17:35:19,618 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:35:18" (1/2) ... [2024-01-31 17:35:19,619 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6f8982fd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:35:19, skipping insertion in model container [2024-01-31 17:35:19,619 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:35:19" (2/2) ... [2024-01-31 17:35:19,620 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@589e2894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:19, skipping insertion in model container [2024-01-31 17:35:19,620 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:35:19" (2/2) ... [2024-01-31 17:35:19,620 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:35:22,023 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 17:35:22,025 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-01-31 17:35:22,025 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 17:35:22,062 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:35:22,181 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/mix018_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-01-31 17:35:22,392 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:35:22,401 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:35:22,416 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/mix018_power.oepc_pso.oepc_rmo.oepc.i[969,982] Start Parsing Local [2024-01-31 17:35:22,434 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry [2024-01-31 17:35:22,469 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:35:22,493 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:35:22,500 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:22 WrapperNode [2024-01-31 17:35:22,500 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:35:22,501 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:35:22,501 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:35:22,501 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:35:22,507 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:22" (1/1) ... [2024-01-31 17:35:22,535 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:22" (1/1) ... [2024-01-31 17:35:22,554 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 146 [2024-01-31 17:35:22,555 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:35:22,555 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:35:22,555 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:35:22,555 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:35:22,564 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:22" (1/1) ... [2024-01-31 17:35:22,564 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:22" (1/1) ... [2024-01-31 17:35:22,567 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:22" (1/1) ... [2024-01-31 17:35:22,581 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 17:35:22,594 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:22" (1/1) ... [2024-01-31 17:35:22,595 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:22" (1/1) ... [2024-01-31 17:35:22,601 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:22" (1/1) ... [2024-01-31 17:35:22,603 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:22" (1/1) ... [2024-01-31 17:35:22,604 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:22" (1/1) ... [2024-01-31 17:35:22,605 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:22" (1/1) ... [2024-01-31 17:35:22,608 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:35:22,608 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:35:22,609 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:35:22,609 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:35:22,609 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:22" (1/1) ... [2024-01-31 17:35:22,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:35:22,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:35:22,641 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 17:35:22,646 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 17:35:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:35:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:35:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:35:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:35:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 17:35:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:35:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:35:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:35:22,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:35:22,682 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-31 17:35:22,682 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-31 17:35:22,682 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-31 17:35:22,682 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-31 17:35:22,682 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-31 17:35:22,682 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-31 17:35:22,682 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-01-31 17:35:22,683 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-01-31 17:35:22,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:35:22,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:35:22,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:35:22,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:35:22,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 17:35:22,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:35:22,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:35:22,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:35:22,685 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 17:35:22,794 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:35:22,796 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:35:23,049 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:35:23,049 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:35:23,216 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:35:23,217 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 17:35:23,218 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:35:23 BoogieIcfgContainer [2024-01-31 17:35:23,218 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:35:23,221 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:35:23,221 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:35:23,223 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:35:23,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:35:18" (1/4) ... [2024-01-31 17:35:23,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12783262 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:35:23, skipping insertion in model container [2024-01-31 17:35:23,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:35:19" (2/4) ... [2024-01-31 17:35:23,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12783262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:35:23, skipping insertion in model container [2024-01-31 17:35:23,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:22" (3/4) ... [2024-01-31 17:35:23,226 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12783262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:35:23, skipping insertion in model container [2024-01-31 17:35:23,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:35:23" (4/4) ... [2024-01-31 17:35:23,228 INFO L112 eAbstractionObserver]: Analyzing ICFG mix018_power.oepc_pso.oepc_rmo.oepc.i [2024-01-31 17:35:23,243 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:35:23,243 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-01-31 17:35:23,243 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:35:23,289 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 17:35:23,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 52 transitions, 120 flow [2024-01-31 17:35:23,370 INFO L124 PetriNetUnfolderBase]: 1/48 cut-off events. [2024-01-31 17:35:23,370 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:35:23,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 1/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 101 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2024-01-31 17:35:23,374 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 52 transitions, 120 flow [2024-01-31 17:35:23,378 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 48 transitions, 108 flow [2024-01-31 17:35:23,389 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:35:23,397 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;@b1febd2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:35:23,398 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-01-31 17:35:23,402 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:35:23,403 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-01-31 17:35:23,403 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:35:23,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:23,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 17:35:23,404 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 17:35:23,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:23,409 INFO L85 PathProgramCache]: Analyzing trace with hash 12462588, now seen corresponding path program 1 times [2024-01-31 17:35:23,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:23,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945709920] [2024-01-31 17:35:23,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:23,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:23,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:23,620 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 17:35:23,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:23,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945709920] [2024-01-31 17:35:23,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945709920] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:23,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:23,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:35:23,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710853631] [2024-01-31 17:35:23,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:23,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-31 17:35:23,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:23,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-31 17:35:23,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-31 17:35:23,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 52 [2024-01-31 17:35:23,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 48 transitions, 108 flow. Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:23,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:23,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 52 [2024-01-31 17:35:23,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:24,383 INFO L124 PetriNetUnfolderBase]: 3179/5508 cut-off events. [2024-01-31 17:35:24,383 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:35:24,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10036 conditions, 5508 events. 3179/5508 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 40876 event pairs, 3179 based on Foata normal form. 135/5023 useless extension candidates. Maximal degree in co-relation 10024. Up to 4391 conditions per place. [2024-01-31 17:35:24,424 INFO L140 encePairwiseOnDemand]: 50/52 looper letters, 24 selfloop transitions, 0 changer transitions 0/46 dead transitions. [2024-01-31 17:35:24,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 46 transitions, 152 flow [2024-01-31 17:35:24,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-31 17:35:24,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-31 17:35:24,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 78 transitions. [2024-01-31 17:35:24,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-01-31 17:35:24,436 INFO L175 Difference]: Start difference. First operand has 60 places, 48 transitions, 108 flow. Second operand 2 states and 78 transitions. [2024-01-31 17:35:24,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 46 transitions, 152 flow [2024-01-31 17:35:24,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 46 transitions, 148 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 17:35:24,446 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 100 flow [2024-01-31 17:35:24,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=100, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-01-31 17:35:24,450 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -4 predicate places. [2024-01-31 17:35:24,450 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 100 flow [2024-01-31 17:35:24,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:24,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:24,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 17:35:24,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:35:24,451 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 17:35:24,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:24,452 INFO L85 PathProgramCache]: Analyzing trace with hash 12462589, now seen corresponding path program 1 times [2024-01-31 17:35:24,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:24,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878549205] [2024-01-31 17:35:24,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:24,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:24,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:35:24,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:24,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878549205] [2024-01-31 17:35:24,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878549205] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:24,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:24,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:35:24,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312003315] [2024-01-31 17:35:24,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:24,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:35:24,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:24,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:35:24,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:35:24,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 52 [2024-01-31 17:35:24,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 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 17:35:24,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:24,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 52 [2024-01-31 17:35:24,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:25,065 INFO L124 PetriNetUnfolderBase]: 2495/3993 cut-off events. [2024-01-31 17:35:25,065 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:35:25,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7566 conditions, 3993 events. 2495/3993 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 25014 event pairs, 1647 based on Foata normal form. 0/3914 useless extension candidates. Maximal degree in co-relation 7563. Up to 2779 conditions per place. [2024-01-31 17:35:25,085 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 37 selfloop transitions, 2 changer transitions 2/63 dead transitions. [2024-01-31 17:35:25,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 222 flow [2024-01-31 17:35:25,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:35:25,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:35:25,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-01-31 17:35:25,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7692307692307693 [2024-01-31 17:35:25,087 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 100 flow. Second operand 3 states and 120 transitions. [2024-01-31 17:35:25,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 222 flow [2024-01-31 17:35:25,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 222 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:35:25,088 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 100 flow [2024-01-31 17:35:25,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2024-01-31 17:35:25,089 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -3 predicate places. [2024-01-31 17:35:25,089 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 100 flow [2024-01-31 17:35:25,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 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 17:35:25,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:25,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:35:25,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:35:25,090 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 17:35:25,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:25,090 INFO L85 PathProgramCache]: Analyzing trace with hash -908253651, now seen corresponding path program 1 times [2024-01-31 17:35:25,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:25,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571108951] [2024-01-31 17:35:25,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:25,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:25,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:35:25,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:25,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571108951] [2024-01-31 17:35:25,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571108951] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:25,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:25,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:35:25,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29362740] [2024-01-31 17:35:25,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:25,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:35:25,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:25,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:35:25,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:35:25,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 52 [2024-01-31 17:35:25,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 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 17:35:25,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:25,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 52 [2024-01-31 17:35:25,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:25,617 INFO L124 PetriNetUnfolderBase]: 3311/5211 cut-off events. [2024-01-31 17:35:25,617 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-01-31 17:35:25,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10204 conditions, 5211 events. 3311/5211 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 34486 event pairs, 2495 based on Foata normal form. 0/4944 useless extension candidates. Maximal degree in co-relation 10200. Up to 3465 conditions per place. [2024-01-31 17:35:25,647 INFO L140 encePairwiseOnDemand]: 50/52 looper letters, 33 selfloop transitions, 1 changer transitions 1/53 dead transitions. [2024-01-31 17:35:25,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 53 transitions, 190 flow [2024-01-31 17:35:25,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:35:25,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:35:25,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-01-31 17:35:25,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6538461538461539 [2024-01-31 17:35:25,649 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 100 flow. Second operand 3 states and 102 transitions. [2024-01-31 17:35:25,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 53 transitions, 190 flow [2024-01-31 17:35:25,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:35:25,650 INFO L231 Difference]: Finished difference. Result has 55 places, 42 transitions, 94 flow [2024-01-31 17:35:25,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=55, PETRI_TRANSITIONS=42} [2024-01-31 17:35:25,651 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -5 predicate places. [2024-01-31 17:35:25,651 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 42 transitions, 94 flow [2024-01-31 17:35:25,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 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 17:35:25,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:25,651 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 17:35:25,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:35:25,651 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 17:35:25,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:25,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1908908311, now seen corresponding path program 1 times [2024-01-31 17:35:25,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:25,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720637355] [2024-01-31 17:35:25,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:25,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:25,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:35:25,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:25,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720637355] [2024-01-31 17:35:25,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720637355] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:25,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:25,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:35:25,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824200039] [2024-01-31 17:35:25,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:25,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:35:25,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:25,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:35:25,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:35:25,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-01-31 17:35:25,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 94 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 17:35:25,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:25,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-01-31 17:35:25,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:28,653 INFO L124 PetriNetUnfolderBase]: 23868/34601 cut-off events. [2024-01-31 17:35:28,654 INFO L125 PetriNetUnfolderBase]: For 792/792 co-relation queries the response was YES. [2024-01-31 17:35:28,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68014 conditions, 34601 events. 23868/34601 cut-off events. For 792/792 co-relation queries the response was YES. Maximal size of possible extension queue 1511. Compared 245299 event pairs, 8715 based on Foata normal form. 797/35298 useless extension candidates. Maximal degree in co-relation 68010. Up to 18420 conditions per place. [2024-01-31 17:35:28,856 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 48 selfloop transitions, 7 changer transitions 63/130 dead transitions. [2024-01-31 17:35:28,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 130 transitions, 512 flow [2024-01-31 17:35:28,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:35:28,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:35:28,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 232 transitions. [2024-01-31 17:35:28,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6373626373626373 [2024-01-31 17:35:28,862 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 94 flow. Second operand 7 states and 232 transitions. [2024-01-31 17:35:28,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 130 transitions, 512 flow [2024-01-31 17:35:29,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 130 transitions, 510 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:35:29,046 INFO L231 Difference]: Finished difference. Result has 65 places, 48 transitions, 179 flow [2024-01-31 17:35:29,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=179, PETRI_PLACES=65, PETRI_TRANSITIONS=48} [2024-01-31 17:35:29,048 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 5 predicate places. [2024-01-31 17:35:29,048 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 48 transitions, 179 flow [2024-01-31 17:35:29,048 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 17:35:29,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:29,048 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 17:35:29,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:35:29,049 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 17:35:29,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:29,049 INFO L85 PathProgramCache]: Analyzing trace with hash -491666346, now seen corresponding path program 1 times [2024-01-31 17:35:29,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:29,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994215120] [2024-01-31 17:35:29,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:29,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:29,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:35:29,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:29,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994215120] [2024-01-31 17:35:29,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994215120] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:29,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:29,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:35:29,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040889580] [2024-01-31 17:35:29,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:29,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:35:29,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:29,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:35:29,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:35:29,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 52 [2024-01-31 17:35:29,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 48 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 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 17:35:29,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:29,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 52 [2024-01-31 17:35:29,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:31,736 INFO L124 PetriNetUnfolderBase]: 16249/25196 cut-off events. [2024-01-31 17:35:31,736 INFO L125 PetriNetUnfolderBase]: For 15334/16354 co-relation queries the response was YES. [2024-01-31 17:35:31,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63826 conditions, 25196 events. 16249/25196 cut-off events. For 15334/16354 co-relation queries the response was YES. Maximal size of possible extension queue 1186. Compared 193149 event pairs, 4741 based on Foata normal form. 844/25478 useless extension candidates. Maximal degree in co-relation 63817. Up to 14940 conditions per place. [2024-01-31 17:35:31,872 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 35 selfloop transitions, 3 changer transitions 43/101 dead transitions. [2024-01-31 17:35:31,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 101 transitions, 497 flow [2024-01-31 17:35:31,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:35:31,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:35:31,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 217 transitions. [2024-01-31 17:35:31,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2024-01-31 17:35:31,873 INFO L175 Difference]: Start difference. First operand has 65 places, 48 transitions, 179 flow. Second operand 7 states and 217 transitions. [2024-01-31 17:35:31,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 101 transitions, 497 flow [2024-01-31 17:35:31,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 101 transitions, 467 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-01-31 17:35:31,954 INFO L231 Difference]: Finished difference. Result has 70 places, 48 transitions, 180 flow [2024-01-31 17:35:31,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=180, PETRI_PLACES=70, PETRI_TRANSITIONS=48} [2024-01-31 17:35:31,955 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 10 predicate places. [2024-01-31 17:35:31,955 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 48 transitions, 180 flow [2024-01-31 17:35:31,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 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 17:35:31,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:31,955 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 17:35:31,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 17:35:31,956 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 17:35:31,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:31,956 INFO L85 PathProgramCache]: Analyzing trace with hash 718817855, now seen corresponding path program 1 times [2024-01-31 17:35:31,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:31,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430539952] [2024-01-31 17:35:31,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:31,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:32,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:35:32,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:32,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430539952] [2024-01-31 17:35:32,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430539952] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:32,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:32,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:35:32,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287157038] [2024-01-31 17:35:32,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:32,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:35:32,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:32,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:35:32,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:35:32,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 52 [2024-01-31 17:35:32,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 48 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:32,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:32,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 52 [2024-01-31 17:35:32,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:34,369 INFO L124 PetriNetUnfolderBase]: 16953/26245 cut-off events. [2024-01-31 17:35:34,369 INFO L125 PetriNetUnfolderBase]: For 23404/23885 co-relation queries the response was YES. [2024-01-31 17:35:34,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67719 conditions, 26245 events. 16953/26245 cut-off events. For 23404/23885 co-relation queries the response was YES. Maximal size of possible extension queue 1188. Compared 200067 event pairs, 9709 based on Foata normal form. 636/26317 useless extension candidates. Maximal degree in co-relation 67705. Up to 18348 conditions per place. [2024-01-31 17:35:34,597 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 43 selfloop transitions, 5 changer transitions 47/113 dead transitions. [2024-01-31 17:35:34,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 113 transitions, 602 flow [2024-01-31 17:35:34,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:35:34,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:35:34,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 222 transitions. [2024-01-31 17:35:34,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6098901098901099 [2024-01-31 17:35:34,599 INFO L175 Difference]: Start difference. First operand has 70 places, 48 transitions, 180 flow. Second operand 7 states and 222 transitions. [2024-01-31 17:35:34,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 113 transitions, 602 flow [2024-01-31 17:35:35,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 113 transitions, 576 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-01-31 17:35:35,093 INFO L231 Difference]: Finished difference. Result has 69 places, 51 transitions, 217 flow [2024-01-31 17:35:35,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=217, PETRI_PLACES=69, PETRI_TRANSITIONS=51} [2024-01-31 17:35:35,094 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 9 predicate places. [2024-01-31 17:35:35,094 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 51 transitions, 217 flow [2024-01-31 17:35:35,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:35,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:35,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:35:35,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 17:35:35,095 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 17:35:35,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:35,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1908669338, now seen corresponding path program 1 times [2024-01-31 17:35:35,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:35,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226474689] [2024-01-31 17:35:35,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:35,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:35,226 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 17:35:35,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:35,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226474689] [2024-01-31 17:35:35,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226474689] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:35,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:35,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:35:35,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830570862] [2024-01-31 17:35:35,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:35,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:35:35,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:35,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:35:35,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:35:35,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 52 [2024-01-31 17:35:35,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 51 transitions, 217 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 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 17:35:35,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:35,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 52 [2024-01-31 17:35:35,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:38,288 INFO L124 PetriNetUnfolderBase]: 26762/41521 cut-off events. [2024-01-31 17:35:38,288 INFO L125 PetriNetUnfolderBase]: For 29489/33063 co-relation queries the response was YES. [2024-01-31 17:35:38,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100517 conditions, 41521 events. 26762/41521 cut-off events. For 29489/33063 co-relation queries the response was YES. Maximal size of possible extension queue 1623. Compared 321047 event pairs, 5053 based on Foata normal form. 1536/41863 useless extension candidates. Maximal degree in co-relation 100504. Up to 19856 conditions per place. [2024-01-31 17:35:38,588 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 56 selfloop transitions, 6 changer transitions 0/85 dead transitions. [2024-01-31 17:35:38,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 85 transitions, 431 flow [2024-01-31 17:35:38,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:35:38,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:35:38,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-01-31 17:35:38,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6971153846153846 [2024-01-31 17:35:38,590 INFO L175 Difference]: Start difference. First operand has 69 places, 51 transitions, 217 flow. Second operand 4 states and 145 transitions. [2024-01-31 17:35:38,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 85 transitions, 431 flow [2024-01-31 17:35:38,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 85 transitions, 422 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-31 17:35:38,915 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 254 flow [2024-01-31 17:35:38,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2024-01-31 17:35:38,915 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 7 predicate places. [2024-01-31 17:35:38,915 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 254 flow [2024-01-31 17:35:38,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 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 17:35:38,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:38,916 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] [2024-01-31 17:35:38,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 17:35:38,916 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 17:35:38,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:38,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1929227986, now seen corresponding path program 1 times [2024-01-31 17:35:38,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:38,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183592921] [2024-01-31 17:35:38,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:38,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:39,213 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 17:35:39,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:39,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183592921] [2024-01-31 17:35:39,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183592921] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:39,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:39,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:35:39,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028330341] [2024-01-31 17:35:39,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:39,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:35:39,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:39,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:35:39,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:35:39,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-01-31 17:35:39,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 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 17:35:39,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:39,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-01-31 17:35:39,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:43,818 INFO L124 PetriNetUnfolderBase]: 36578/53656 cut-off events. [2024-01-31 17:35:43,818 INFO L125 PetriNetUnfolderBase]: For 58115/60663 co-relation queries the response was YES. [2024-01-31 17:35:44,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151968 conditions, 53656 events. 36578/53656 cut-off events. For 58115/60663 co-relation queries the response was YES. Maximal size of possible extension queue 2348. Compared 405926 event pairs, 14909 based on Foata normal form. 813/51651 useless extension candidates. Maximal degree in co-relation 151955. Up to 23221 conditions per place. [2024-01-31 17:35:44,312 INFO L140 encePairwiseOnDemand]: 44/52 looper letters, 104 selfloop transitions, 14 changer transitions 2/137 dead transitions. [2024-01-31 17:35:44,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 137 transitions, 819 flow [2024-01-31 17:35:44,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 17:35:44,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 17:35:44,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 244 transitions. [2024-01-31 17:35:44,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2024-01-31 17:35:44,314 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 254 flow. Second operand 8 states and 244 transitions. [2024-01-31 17:35:44,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 137 transitions, 819 flow [2024-01-31 17:35:44,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 137 transitions, 811 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-01-31 17:35:44,325 INFO L231 Difference]: Finished difference. Result has 79 places, 63 transitions, 365 flow [2024-01-31 17:35:44,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=365, PETRI_PLACES=79, PETRI_TRANSITIONS=63} [2024-01-31 17:35:44,327 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 19 predicate places. [2024-01-31 17:35:44,327 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 63 transitions, 365 flow [2024-01-31 17:35:44,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 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 17:35:44,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:44,328 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] [2024-01-31 17:35:44,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 17:35:44,328 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 17:35:44,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:44,328 INFO L85 PathProgramCache]: Analyzing trace with hash 838630444, now seen corresponding path program 1 times [2024-01-31 17:35:44,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:44,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082908541] [2024-01-31 17:35:44,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:44,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:44,430 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 17:35:44,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:44,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082908541] [2024-01-31 17:35:44,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082908541] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:44,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:44,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:35:44,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573374519] [2024-01-31 17:35:44,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:44,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:35:44,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:44,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:35:44,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:35:44,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 52 [2024-01-31 17:35:44,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 63 transitions, 365 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 17:35:44,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:44,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 52 [2024-01-31 17:35:44,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:48,774 INFO L124 PetriNetUnfolderBase]: 31260/47437 cut-off events. [2024-01-31 17:35:48,775 INFO L125 PetriNetUnfolderBase]: For 48722/52030 co-relation queries the response was YES. [2024-01-31 17:35:48,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129316 conditions, 47437 events. 31260/47437 cut-off events. For 48722/52030 co-relation queries the response was YES. Maximal size of possible extension queue 1849. Compared 357418 event pairs, 4208 based on Foata normal form. 2119/48183 useless extension candidates. Maximal degree in co-relation 129297. Up to 16529 conditions per place. [2024-01-31 17:35:49,076 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 73 selfloop transitions, 10 changer transitions 3/113 dead transitions. [2024-01-31 17:35:49,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 113 transitions, 687 flow [2024-01-31 17:35:49,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:35:49,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:35:49,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 186 transitions. [2024-01-31 17:35:49,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7153846153846154 [2024-01-31 17:35:49,081 INFO L175 Difference]: Start difference. First operand has 79 places, 63 transitions, 365 flow. Second operand 5 states and 186 transitions. [2024-01-31 17:35:49,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 113 transitions, 687 flow [2024-01-31 17:35:49,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 113 transitions, 667 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-01-31 17:35:49,380 INFO L231 Difference]: Finished difference. Result has 85 places, 65 transitions, 384 flow [2024-01-31 17:35:49,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=384, PETRI_PLACES=85, PETRI_TRANSITIONS=65} [2024-01-31 17:35:49,381 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 25 predicate places. [2024-01-31 17:35:49,381 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 65 transitions, 384 flow [2024-01-31 17:35:49,381 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 17:35:49,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:49,382 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] [2024-01-31 17:35:49,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 17:35:49,382 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 17:35:49,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:49,382 INFO L85 PathProgramCache]: Analyzing trace with hash 47298247, now seen corresponding path program 1 times [2024-01-31 17:35:49,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:49,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551113227] [2024-01-31 17:35:49,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:49,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:49,512 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 17:35:49,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:49,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551113227] [2024-01-31 17:35:49,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551113227] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:49,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:49,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:35:49,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682076852] [2024-01-31 17:35:49,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:49,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:35:49,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:49,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:35:49,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:35:49,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 52 [2024-01-31 17:35:49,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 65 transitions, 384 flow. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 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 17:35:49,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:49,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 52 [2024-01-31 17:35:49,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:52,796 INFO L124 PetriNetUnfolderBase]: 24116/35881 cut-off events. [2024-01-31 17:35:52,796 INFO L125 PetriNetUnfolderBase]: For 49921/52301 co-relation queries the response was YES. [2024-01-31 17:35:52,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106983 conditions, 35881 events. 24116/35881 cut-off events. For 49921/52301 co-relation queries the response was YES. Maximal size of possible extension queue 1548. Compared 254134 event pairs, 2820 based on Foata normal form. 1281/35900 useless extension candidates. Maximal degree in co-relation 106961. Up to 12330 conditions per place. [2024-01-31 17:35:52,984 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 86 selfloop transitions, 14 changer transitions 2/129 dead transitions. [2024-01-31 17:35:52,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 129 transitions, 797 flow [2024-01-31 17:35:52,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:35:52,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:35:52,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 225 transitions. [2024-01-31 17:35:52,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7211538461538461 [2024-01-31 17:35:52,989 INFO L175 Difference]: Start difference. First operand has 85 places, 65 transitions, 384 flow. Second operand 6 states and 225 transitions. [2024-01-31 17:35:52,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 129 transitions, 797 flow [2024-01-31 17:35:53,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 129 transitions, 775 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-01-31 17:35:53,021 INFO L231 Difference]: Finished difference. Result has 86 places, 70 transitions, 448 flow [2024-01-31 17:35:53,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=448, PETRI_PLACES=86, PETRI_TRANSITIONS=70} [2024-01-31 17:35:53,023 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 26 predicate places. [2024-01-31 17:35:53,023 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 70 transitions, 448 flow [2024-01-31 17:35:53,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 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 17:35:53,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:53,024 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] [2024-01-31 17:35:53,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 17:35:53,024 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 17:35:53,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:53,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1334290614, now seen corresponding path program 1 times [2024-01-31 17:35:53,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:53,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37420213] [2024-01-31 17:35:53,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:53,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:53,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:35:53,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:53,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37420213] [2024-01-31 17:35:53,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37420213] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:53,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:53,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:35:53,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875142377] [2024-01-31 17:35:53,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:53,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:35:53,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:53,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:35:53,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:35:53,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 52 [2024-01-31 17:35:53,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 70 transitions, 448 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 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 17:35:53,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:53,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 52 [2024-01-31 17:35:53,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:57,703 INFO L124 PetriNetUnfolderBase]: 25171/42927 cut-off events. [2024-01-31 17:35:57,703 INFO L125 PetriNetUnfolderBase]: For 88270/105794 co-relation queries the response was YES. [2024-01-31 17:35:57,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126540 conditions, 42927 events. 25171/42927 cut-off events. For 88270/105794 co-relation queries the response was YES. Maximal size of possible extension queue 2803. Compared 400229 event pairs, 6255 based on Foata normal form. 1214/39585 useless extension candidates. Maximal degree in co-relation 126518. Up to 15832 conditions per place. [2024-01-31 17:35:58,070 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 91 selfloop transitions, 15 changer transitions 20/168 dead transitions. [2024-01-31 17:35:58,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 168 transitions, 1071 flow [2024-01-31 17:35:58,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:35:58,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:35:58,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 310 transitions. [2024-01-31 17:35:58,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6623931623931624 [2024-01-31 17:35:58,072 INFO L175 Difference]: Start difference. First operand has 86 places, 70 transitions, 448 flow. Second operand 9 states and 310 transitions. [2024-01-31 17:35:58,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 168 transitions, 1071 flow [2024-01-31 17:35:58,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 168 transitions, 1040 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-01-31 17:35:58,719 INFO L231 Difference]: Finished difference. Result has 97 places, 82 transitions, 516 flow [2024-01-31 17:35:58,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=516, PETRI_PLACES=97, PETRI_TRANSITIONS=82} [2024-01-31 17:35:58,720 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 37 predicate places. [2024-01-31 17:35:58,720 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 82 transitions, 516 flow [2024-01-31 17:35:58,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 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 17:35:58,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:58,721 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] [2024-01-31 17:35:58,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 17:35:58,721 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:58,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:58,721 INFO L85 PathProgramCache]: Analyzing trace with hash 658627554, now seen corresponding path program 2 times [2024-01-31 17:35:58,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:58,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592023993] [2024-01-31 17:35:58,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:58,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:59,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:35:59,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:59,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592023993] [2024-01-31 17:35:59,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592023993] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:59,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:59,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:35:59,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357573975] [2024-01-31 17:35:59,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:59,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:35:59,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:59,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:35:59,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:35:59,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 52 [2024-01-31 17:35:59,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 82 transitions, 516 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 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 17:35:59,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:59,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 52 [2024-01-31 17:35:59,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand