./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix044_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/mix044_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/mix044_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix044_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 17:38:34,430 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:38:34,486 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:38:34,489 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:38:34,490 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:38:34,509 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:38:34,510 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:38:34,510 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:38:34,511 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:38:34,515 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:38:34,515 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:38:34,516 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:38:34,517 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:38:34,518 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:38:34,518 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:38:34,518 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:38:34,519 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:38:34,519 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:38:34,519 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:38:34,520 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:38:34,520 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:38:34,520 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:38:34,521 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:38:34,521 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:38:34,521 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:38:34,522 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:38:34,522 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:38:34,522 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:38:34,523 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:38:34,523 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:38:34,523 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:38:34,523 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:38:34,524 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:38:34,524 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:38:34,524 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:38:34,525 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:38:34,525 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:38:34,525 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:38:34,525 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:38:34,526 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:38:34,526 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:38:34,526 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:38:34,526 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:38:34,527 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:38:34,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:38:34,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:38:34,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:38:34,774 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:38:34,774 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:38:34,775 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix044_power.oepc_pso.oepc_rmo.oepc.i [2024-01-31 17:38:36,017 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:38:36,277 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:38:36,278 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix044_power.oepc_pso.oepc_rmo.oepc.i [2024-01-31 17:38:36,294 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9fc6dbb6/71815c8676d048769b1470b6fc3fc39a/FLAGb456613f0 [2024-01-31 17:38:36,308 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9fc6dbb6/71815c8676d048769b1470b6fc3fc39a [2024-01-31 17:38:36,311 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:38:36,311 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:38:36,312 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix044_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-01-31 17:38:37,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:38:37,183 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:38:37,184 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:38:37,184 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:38:37,189 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:38:37,190 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:38:36" (1/2) ... [2024-01-31 17:38:37,192 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73e786e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:38:37, skipping insertion in model container [2024-01-31 17:38:37,192 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:38:36" (1/2) ... [2024-01-31 17:38:37,194 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@f5734eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:38:37, skipping insertion in model container [2024-01-31 17:38:37,194 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:38:37" (2/2) ... [2024-01-31 17:38:37,195 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73e786e5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:38:37, skipping insertion in model container [2024-01-31 17:38:37,195 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:38:37" (2/2) ... [2024-01-31 17:38:37,195 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:38:39,886 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 17:38:39,887 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 17:38:39,887 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-01-31 17:38:39,932 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:38:40,104 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/mix044_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-01-31 17:38:40,274 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:38:40,294 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:38:40,304 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/mix044_power.oepc_pso.oepc_rmo.oepc.i[969,982] Start Parsing Local [2024-01-31 17:38:40,323 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry [2024-01-31 17:38:40,369 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:38:40,398 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:38:40,399 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:38:40 WrapperNode [2024-01-31 17:38:40,399 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:38:40,400 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:38:40,400 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:38:40,400 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:38:40,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:38:40" (1/1) ... [2024-01-31 17:38:40,433 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:38:40" (1/1) ... [2024-01-31 17:38:40,462 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 146 [2024-01-31 17:38:40,462 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:38:40,463 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:38:40,463 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:38:40,463 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:38:40,474 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:38:40" (1/1) ... [2024-01-31 17:38:40,474 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:38:40" (1/1) ... [2024-01-31 17:38:40,479 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:38:40" (1/1) ... [2024-01-31 17:38:40,504 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 17:38:40,512 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:38:40" (1/1) ... [2024-01-31 17:38:40,513 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:38:40" (1/1) ... [2024-01-31 17:38:40,526 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:38:40" (1/1) ... [2024-01-31 17:38:40,542 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:38:40" (1/1) ... [2024-01-31 17:38:40,544 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:38:40" (1/1) ... [2024-01-31 17:38:40,545 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:38:40" (1/1) ... [2024-01-31 17:38:40,559 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:38:40,560 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:38:40,561 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:38:40,561 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:38:40,562 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:38:40" (1/1) ... [2024-01-31 17:38:40,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:38:40,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:38:40,601 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 17:38:40,627 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 17:38:40,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:38:40,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:38:40,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:38:40,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:38:40,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 17:38:40,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:38:40,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:38:40,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:38:40,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:38:40,648 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-31 17:38:40,648 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-31 17:38:40,649 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-31 17:38:40,649 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-31 17:38:40,649 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-31 17:38:40,650 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-31 17:38:40,650 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-01-31 17:38:40,651 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-01-31 17:38:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:38:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:38:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:38:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:38:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 17:38:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:38:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:38:40,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:38:40,653 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 17:38:40,817 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:38:40,819 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:38:41,135 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:38:41,137 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:38:41,330 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:38:41,331 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 17:38:41,332 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:38:41 BoogieIcfgContainer [2024-01-31 17:38:41,332 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:38:41,335 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:38:41,335 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:38:41,338 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:38:41,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:38:36" (1/4) ... [2024-01-31 17:38:41,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70483786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:38:41, skipping insertion in model container [2024-01-31 17:38:41,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:38:37" (2/4) ... [2024-01-31 17:38:41,340 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70483786 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:38:41, skipping insertion in model container [2024-01-31 17:38:41,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:38:40" (3/4) ... [2024-01-31 17:38:41,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70483786 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:38:41, skipping insertion in model container [2024-01-31 17:38:41,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:38:41" (4/4) ... [2024-01-31 17:38:41,342 INFO L112 eAbstractionObserver]: Analyzing ICFG mix044_power.oepc_pso.oepc_rmo.oepc.i [2024-01-31 17:38:41,357 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:38:41,357 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-01-31 17:38:41,357 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:38:41,409 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 17:38:41,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 53 transitions, 122 flow [2024-01-31 17:38:41,491 INFO L124 PetriNetUnfolderBase]: 1/49 cut-off events. [2024-01-31 17:38:41,493 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:38:41,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 49 events. 1/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 104 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2024-01-31 17:38:41,499 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 53 transitions, 122 flow [2024-01-31 17:38:41,502 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 49 transitions, 110 flow [2024-01-31 17:38:41,512 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:38:41,518 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;@411de10d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:38:41,518 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-01-31 17:38:41,522 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:38:41,522 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-01-31 17:38:41,522 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:38:41,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:38:41,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 17:38:41,523 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 17:38:41,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:38:41,531 INFO L85 PathProgramCache]: Analyzing trace with hash 12465535, now seen corresponding path program 1 times [2024-01-31 17:38:41,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:38:41,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693420509] [2024-01-31 17:38:41,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:38:41,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:38:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:38:41,749 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 17:38:41,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:38:41,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693420509] [2024-01-31 17:38:41,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693420509] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:38:41,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:38:41,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:38:41,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843036990] [2024-01-31 17:38:41,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:38:41,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-31 17:38:41,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:38:41,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-31 17:38:41,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-31 17:38:41,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2024-01-31 17:38:41,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 110 flow. Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:38:41,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:38:41,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2024-01-31 17:38:41,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:38:42,776 INFO L124 PetriNetUnfolderBase]: 3179/5553 cut-off events. [2024-01-31 17:38:42,777 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:38:42,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10081 conditions, 5553 events. 3179/5553 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 41585 event pairs, 3179 based on Foata normal form. 135/5019 useless extension candidates. Maximal degree in co-relation 10069. Up to 4391 conditions per place. [2024-01-31 17:38:42,834 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 24 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2024-01-31 17:38:42,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 47 transitions, 154 flow [2024-01-31 17:38:42,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-31 17:38:42,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-31 17:38:42,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2024-01-31 17:38:42,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7547169811320755 [2024-01-31 17:38:42,850 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 110 flow. Second operand 2 states and 80 transitions. [2024-01-31 17:38:42,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 47 transitions, 154 flow [2024-01-31 17:38:42,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 47 transitions, 150 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 17:38:42,864 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 102 flow [2024-01-31 17:38:42,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=102, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2024-01-31 17:38:42,872 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2024-01-31 17:38:42,872 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 102 flow [2024-01-31 17:38:42,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:38:42,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:38:42,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 17:38:42,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:38:42,873 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 17:38:42,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:38:42,875 INFO L85 PathProgramCache]: Analyzing trace with hash 12465536, now seen corresponding path program 1 times [2024-01-31 17:38:42,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:38:42,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369973716] [2024-01-31 17:38:42,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:38:42,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:38:42,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:38:43,112 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 17:38:43,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:38:43,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369973716] [2024-01-31 17:38:43,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369973716] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:38:43,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:38:43,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:38:43,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958942367] [2024-01-31 17:38:43,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:38:43,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:38:43,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:38:43,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:38:43,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:38:43,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2024-01-31 17:38:43,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:38:43,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:38:43,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2024-01-31 17:38:43,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:38:43,727 INFO L124 PetriNetUnfolderBase]: 2495/4181 cut-off events. [2024-01-31 17:38:43,727 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:38:43,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7754 conditions, 4181 events. 2495/4181 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 29291 event pairs, 443 based on Foata normal form. 0/4074 useless extension candidates. Maximal degree in co-relation 7751. Up to 2779 conditions per place. [2024-01-31 17:38:43,755 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 37 selfloop transitions, 2 changer transitions 2/64 dead transitions. [2024-01-31 17:38:43,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 64 transitions, 224 flow [2024-01-31 17:38:43,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:38:43,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:38:43,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-01-31 17:38:43,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7735849056603774 [2024-01-31 17:38:43,758 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 102 flow. Second operand 3 states and 123 transitions. [2024-01-31 17:38:43,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 64 transitions, 224 flow [2024-01-31 17:38:43,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 64 transitions, 224 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:38:43,762 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 102 flow [2024-01-31 17:38:43,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2024-01-31 17:38:43,763 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2024-01-31 17:38:43,763 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 102 flow [2024-01-31 17:38:43,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:38:43,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:38:43,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:38:43,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:38:43,765 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 17:38:43,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:38:43,767 INFO L85 PathProgramCache]: Analyzing trace with hash 726951668, now seen corresponding path program 1 times [2024-01-31 17:38:43,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:38:43,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899361363] [2024-01-31 17:38:43,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:38:43,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:38:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:38:43,862 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 17:38:43,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:38:43,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899361363] [2024-01-31 17:38:43,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899361363] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:38:43,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:38:43,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:38:43,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422802510] [2024-01-31 17:38:43,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:38:43,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:38:43,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:38:43,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:38:43,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:38:43,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 53 [2024-01-31 17:38:43,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:38:43,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:38:43,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 53 [2024-01-31 17:38:43,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:38:44,518 INFO L124 PetriNetUnfolderBase]: 3311/5247 cut-off events. [2024-01-31 17:38:44,518 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-01-31 17:38:44,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10240 conditions, 5247 events. 3311/5247 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 35262 event pairs, 2495 based on Foata normal form. 0/4905 useless extension candidates. Maximal degree in co-relation 10236. Up to 3465 conditions per place. [2024-01-31 17:38:44,550 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 33 selfloop transitions, 1 changer transitions 1/54 dead transitions. [2024-01-31 17:38:44,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 192 flow [2024-01-31 17:38:44,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:38:44,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:38:44,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-01-31 17:38:44,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.660377358490566 [2024-01-31 17:38:44,556 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 102 flow. Second operand 3 states and 105 transitions. [2024-01-31 17:38:44,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 192 flow [2024-01-31 17:38:44,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:38:44,559 INFO L231 Difference]: Finished difference. Result has 56 places, 43 transitions, 96 flow [2024-01-31 17:38:44,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=56, PETRI_TRANSITIONS=43} [2024-01-31 17:38:44,560 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2024-01-31 17:38:44,561 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 43 transitions, 96 flow [2024-01-31 17:38:44,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:38:44,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:38:44,561 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 17:38:44,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:38:44,562 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 17:38:44,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:38:44,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1060665648, now seen corresponding path program 1 times [2024-01-31 17:38:44,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:38:44,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908534065] [2024-01-31 17:38:44,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:38:44,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:38:44,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:38:44,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:38:44,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:38:44,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908534065] [2024-01-31 17:38:44,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908534065] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:38:44,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:38:44,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:38:44,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91798337] [2024-01-31 17:38:44,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:38:44,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:38:44,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:38:44,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:38:44,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:38:44,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-01-31 17:38:44,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:38:44,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:38:44,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-01-31 17:38:44,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:38:49,809 INFO L124 PetriNetUnfolderBase]: 33799/48852 cut-off events. [2024-01-31 17:38:49,810 INFO L125 PetriNetUnfolderBase]: For 1102/1102 co-relation queries the response was YES. [2024-01-31 17:38:49,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95756 conditions, 48852 events. 33799/48852 cut-off events. For 1102/1102 co-relation queries the response was YES. Maximal size of possible extension queue 2036. Compared 352599 event pairs, 9517 based on Foata normal form. 1122/49657 useless extension candidates. Maximal degree in co-relation 95752. Up to 21087 conditions per place. [2024-01-31 17:38:50,090 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 49 selfloop transitions, 8 changer transitions 67/136 dead transitions. [2024-01-31 17:38:50,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 136 transitions, 536 flow [2024-01-31 17:38:50,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:38:50,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:38:50,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 238 transitions. [2024-01-31 17:38:50,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6415094339622641 [2024-01-31 17:38:50,094 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 96 flow. Second operand 7 states and 238 transitions. [2024-01-31 17:38:50,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 136 transitions, 536 flow [2024-01-31 17:38:50,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 136 transitions, 534 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:38:50,435 INFO L231 Difference]: Finished difference. Result has 66 places, 50 transitions, 193 flow [2024-01-31 17:38:50,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=193, PETRI_PLACES=66, PETRI_TRANSITIONS=50} [2024-01-31 17:38:50,436 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 5 predicate places. [2024-01-31 17:38:50,436 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 50 transitions, 193 flow [2024-01-31 17:38:50,436 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 17:38:50,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:38:50,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:38:50,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:38:50,437 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 17:38:50,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:38:50,438 INFO L85 PathProgramCache]: Analyzing trace with hash 622480111, now seen corresponding path program 1 times [2024-01-31 17:38:50,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:38:50,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252647267] [2024-01-31 17:38:50,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:38:50,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:38:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:38:50,659 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 17:38:50,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:38:50,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252647267] [2024-01-31 17:38:50,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252647267] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:38:50,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:38:50,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:38:50,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826530423] [2024-01-31 17:38:50,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:38:50,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:38:50,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:38:50,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:38:50,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:38:50,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-01-31 17:38:50,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 50 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:38:50,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:38:50,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-01-31 17:38:50,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:38:55,063 INFO L124 PetriNetUnfolderBase]: 31252/45464 cut-off events. [2024-01-31 17:38:55,063 INFO L125 PetriNetUnfolderBase]: For 46275/46305 co-relation queries the response was YES. [2024-01-31 17:38:55,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128192 conditions, 45464 events. 31252/45464 cut-off events. For 46275/46305 co-relation queries the response was YES. Maximal size of possible extension queue 1898. Compared 327585 event pairs, 2268 based on Foata normal form. 897/46217 useless extension candidates. Maximal degree in co-relation 128183. Up to 20219 conditions per place. [2024-01-31 17:38:55,371 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 62 selfloop transitions, 12 changer transitions 88/174 dead transitions. [2024-01-31 17:38:55,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 174 transitions, 1024 flow [2024-01-31 17:38:55,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:38:55,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:38:55,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 315 transitions. [2024-01-31 17:38:55,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5943396226415094 [2024-01-31 17:38:55,379 INFO L175 Difference]: Start difference. First operand has 66 places, 50 transitions, 193 flow. Second operand 10 states and 315 transitions. [2024-01-31 17:38:55,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 174 transitions, 1024 flow [2024-01-31 17:38:55,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 174 transitions, 958 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:38:55,490 INFO L231 Difference]: Finished difference. Result has 78 places, 57 transitions, 301 flow [2024-01-31 17:38:55,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=301, PETRI_PLACES=78, PETRI_TRANSITIONS=57} [2024-01-31 17:38:55,493 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 17 predicate places. [2024-01-31 17:38:55,493 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 57 transitions, 301 flow [2024-01-31 17:38:55,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:38:55,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:38:55,494 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 17:38:55,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 17:38:55,494 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 17:38:55,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:38:55,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1268827793, now seen corresponding path program 1 times [2024-01-31 17:38:55,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:38:55,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193560097] [2024-01-31 17:38:55,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:38:55,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:38:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:38:55,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:38:55,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:38:55,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193560097] [2024-01-31 17:38:55,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193560097] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:38:55,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:38:55,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:38:55,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390446727] [2024-01-31 17:38:55,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:38:55,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:38:55,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:38:55,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:38:55,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:38:55,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-01-31 17:38:55,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 57 transitions, 301 flow. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:38:55,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:38:55,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-01-31 17:38:55,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:00,181 INFO L124 PetriNetUnfolderBase]: 30374/44068 cut-off events. [2024-01-31 17:39:00,181 INFO L125 PetriNetUnfolderBase]: For 120342/120412 co-relation queries the response was YES. [2024-01-31 17:39:00,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143588 conditions, 44068 events. 30374/44068 cut-off events. For 120342/120412 co-relation queries the response was YES. Maximal size of possible extension queue 1832. Compared 314448 event pairs, 6999 based on Foata normal form. 943/44989 useless extension candidates. Maximal degree in co-relation 143571. Up to 19291 conditions per place. [2024-01-31 17:39:00,808 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 73 selfloop transitions, 18 changer transitions 92/195 dead transitions. [2024-01-31 17:39:00,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 195 transitions, 1352 flow [2024-01-31 17:39:00,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:39:00,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:39:00,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 324 transitions. [2024-01-31 17:39:00,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6113207547169811 [2024-01-31 17:39:00,812 INFO L175 Difference]: Start difference. First operand has 78 places, 57 transitions, 301 flow. Second operand 10 states and 324 transitions. [2024-01-31 17:39:00,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 195 transitions, 1352 flow [2024-01-31 17:39:01,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 195 transitions, 1324 flow, removed 14 selfloop flow, removed 0 redundant places. [2024-01-31 17:39:01,483 INFO L231 Difference]: Finished difference. Result has 90 places, 67 transitions, 491 flow [2024-01-31 17:39:01,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=491, PETRI_PLACES=90, PETRI_TRANSITIONS=67} [2024-01-31 17:39:01,484 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 29 predicate places. [2024-01-31 17:39:01,484 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 67 transitions, 491 flow [2024-01-31 17:39:01,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:39:01,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:01,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:39:01,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 17:39:01,485 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 17:39:01,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:01,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1458333842, now seen corresponding path program 1 times [2024-01-31 17:39:01,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:01,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060233105] [2024-01-31 17:39:01,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:01,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:01,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:39:01,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:01,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060233105] [2024-01-31 17:39:01,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060233105] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:01,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:01,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:39:01,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324375279] [2024-01-31 17:39:01,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:01,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:39:01,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:01,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:39:01,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:39:01,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-01-31 17:39:01,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 67 transitions, 491 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:39:01,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:01,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-01-31 17:39:01,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:06,062 INFO L124 PetriNetUnfolderBase]: 27182/39527 cut-off events. [2024-01-31 17:39:06,063 INFO L125 PetriNetUnfolderBase]: For 177930/178020 co-relation queries the response was YES. [2024-01-31 17:39:06,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144327 conditions, 39527 events. 27182/39527 cut-off events. For 177930/178020 co-relation queries the response was YES. Maximal size of possible extension queue 1592. Compared 276637 event pairs, 4681 based on Foata normal form. 963/40377 useless extension candidates. Maximal degree in co-relation 144301. Up to 13253 conditions per place. [2024-01-31 17:39:06,400 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 80 selfloop transitions, 13 changer transitions 98/203 dead transitions. [2024-01-31 17:39:06,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 203 transitions, 1782 flow [2024-01-31 17:39:06,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:39:06,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:39:06,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 314 transitions. [2024-01-31 17:39:06,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5924528301886792 [2024-01-31 17:39:06,403 INFO L175 Difference]: Start difference. First operand has 90 places, 67 transitions, 491 flow. Second operand 10 states and 314 transitions. [2024-01-31 17:39:06,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 203 transitions, 1782 flow [2024-01-31 17:39:07,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 203 transitions, 1738 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-01-31 17:39:07,523 INFO L231 Difference]: Finished difference. Result has 98 places, 74 transitions, 653 flow [2024-01-31 17:39:07,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=653, PETRI_PLACES=98, PETRI_TRANSITIONS=74} [2024-01-31 17:39:07,524 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 37 predicate places. [2024-01-31 17:39:07,524 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 74 transitions, 653 flow [2024-01-31 17:39:07,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:39:07,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:07,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:39:07,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 17:39:07,525 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 17:39:07,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:07,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1583458187, now seen corresponding path program 1 times [2024-01-31 17:39:07,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:07,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010924786] [2024-01-31 17:39:07,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:07,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:07,668 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 17:39:07,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:07,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010924786] [2024-01-31 17:39:07,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010924786] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:07,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:07,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:39:07,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860402087] [2024-01-31 17:39:07,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:07,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:39:07,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:07,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:39:07,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:39:07,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:39:07,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 74 transitions, 653 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:39:07,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:07,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:39:07,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:12,815 INFO L124 PetriNetUnfolderBase]: 31366/48823 cut-off events. [2024-01-31 17:39:12,815 INFO L125 PetriNetUnfolderBase]: For 116353/120719 co-relation queries the response was YES. [2024-01-31 17:39:13,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135427 conditions, 48823 events. 31366/48823 cut-off events. For 116353/120719 co-relation queries the response was YES. Maximal size of possible extension queue 2163. Compared 393130 event pairs, 4979 based on Foata normal form. 2183/49183 useless extension candidates. Maximal degree in co-relation 135396. Up to 23921 conditions per place. [2024-01-31 17:39:13,307 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 59 selfloop transitions, 6 changer transitions 0/110 dead transitions. [2024-01-31 17:39:13,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 110 transitions, 933 flow [2024-01-31 17:39:13,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:39:13,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:39:13,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2024-01-31 17:39:13,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7028301886792453 [2024-01-31 17:39:13,309 INFO L175 Difference]: Start difference. First operand has 98 places, 74 transitions, 653 flow. Second operand 4 states and 149 transitions. [2024-01-31 17:39:13,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 110 transitions, 933 flow [2024-01-31 17:39:14,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 110 transitions, 889 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-01-31 17:39:14,220 INFO L231 Difference]: Finished difference. Result has 89 places, 79 transitions, 663 flow [2024-01-31 17:39:14,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=663, PETRI_PLACES=89, PETRI_TRANSITIONS=79} [2024-01-31 17:39:14,221 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 28 predicate places. [2024-01-31 17:39:14,221 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 79 transitions, 663 flow [2024-01-31 17:39:14,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:39:14,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:14,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:39:14,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 17:39:14,222 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 17:39:14,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:14,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1961833211, now seen corresponding path program 1 times [2024-01-31 17:39:14,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:14,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270365405] [2024-01-31 17:39:14,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:14,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:14,466 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 17:39:14,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:14,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270365405] [2024-01-31 17:39:14,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270365405] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:14,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:14,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:39:14,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979976826] [2024-01-31 17:39:14,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:14,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:39:14,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:14,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:39:14,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:39:14,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-01-31 17:39:14,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 79 transitions, 663 flow. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:39:14,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:14,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-01-31 17:39:14,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:23,340 INFO L124 PetriNetUnfolderBase]: 51458/76753 cut-off events. [2024-01-31 17:39:23,341 INFO L125 PetriNetUnfolderBase]: For 276456/279783 co-relation queries the response was YES. [2024-01-31 17:39:23,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261950 conditions, 76753 events. 51458/76753 cut-off events. For 276456/279783 co-relation queries the response was YES. Maximal size of possible extension queue 3069. Compared 617425 event pairs, 16507 based on Foata normal form. 1244/74027 useless extension candidates. Maximal degree in co-relation 261923. Up to 25256 conditions per place. [2024-01-31 17:39:24,007 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 135 selfloop transitions, 42 changer transitions 14/208 dead transitions. [2024-01-31 17:39:24,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 208 transitions, 1807 flow [2024-01-31 17:39:24,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:39:24,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:39:24,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 316 transitions. [2024-01-31 17:39:24,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5962264150943396 [2024-01-31 17:39:24,009 INFO L175 Difference]: Start difference. First operand has 89 places, 79 transitions, 663 flow. Second operand 10 states and 316 transitions. [2024-01-31 17:39:24,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 208 transitions, 1807 flow [2024-01-31 17:39:24,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 208 transitions, 1761 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-01-31 17:39:24,712 INFO L231 Difference]: Finished difference. Result has 101 places, 97 transitions, 1096 flow [2024-01-31 17:39:24,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1096, PETRI_PLACES=101, PETRI_TRANSITIONS=97} [2024-01-31 17:39:24,713 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 40 predicate places. [2024-01-31 17:39:24,713 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 97 transitions, 1096 flow [2024-01-31 17:39:24,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:39:24,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:24,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:39:24,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 17:39:24,714 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 17:39:24,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:24,714 INFO L85 PathProgramCache]: Analyzing trace with hash -2088196727, now seen corresponding path program 1 times [2024-01-31 17:39:24,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:24,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156845542] [2024-01-31 17:39:24,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:24,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:24,882 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 17:39:24,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:24,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156845542] [2024-01-31 17:39:24,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156845542] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:24,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:24,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:39:24,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844961805] [2024-01-31 17:39:24,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:24,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:39:24,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:24,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:39:24,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:39:24,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:39:24,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 97 transitions, 1096 flow. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:39:24,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:24,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:39:24,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand