./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix046.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/mix046.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/mix046.oepc.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix046.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 17:38:48,593 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:38:48,670 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:38:48,675 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:38:48,676 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:38:48,708 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:38:48,709 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:38:48,709 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:38:48,710 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:38:48,715 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:38:48,715 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:38:48,716 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:38:48,717 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:38:48,718 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:38:48,718 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:38:48,718 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:38:48,719 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:38:48,719 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:38:48,719 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:38:48,720 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:38:48,720 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:38:48,720 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:38:48,721 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:38:48,721 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:38:48,721 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:38:48,721 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:38:48,722 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:38:48,722 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:38:48,722 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:38:48,723 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:38:48,724 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:38:48,724 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:38:48,724 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:38:48,724 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:38:48,725 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:38:48,725 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:38:48,725 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:38:48,725 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:38:48,725 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:38:48,726 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:38:48,726 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:38:48,726 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:38:48,726 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:38:48,727 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:38:48,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:38:49,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:38:49,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:38:49,009 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:38:49,009 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:38:49,010 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix046.oepc.i [2024-01-31 17:38:50,272 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:38:50,529 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:38:50,529 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix046.oepc.i [2024-01-31 17:38:50,544 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08131f5d1/f39a6296bab24d069859e876af85eaac/FLAG585fce64f [2024-01-31 17:38:50,559 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08131f5d1/f39a6296bab24d069859e876af85eaac [2024-01-31 17:38:50,561 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:38:50,562 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:38:50,563 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix046.oepc.yml/witness.yml [2024-01-31 17:38:51,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:38:51,367 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:38:51,370 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:38:51,370 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:38:51,375 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:38:51,375 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:38:50" (1/2) ... [2024-01-31 17:38:51,378 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f231602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:38:51, skipping insertion in model container [2024-01-31 17:38:51,378 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:38:50" (1/2) ... [2024-01-31 17:38:51,380 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@51525979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:38:51, skipping insertion in model container [2024-01-31 17:38:51,381 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:38:51" (2/2) ... [2024-01-31 17:38:51,381 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f231602 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:38:51, skipping insertion in model container [2024-01-31 17:38:51,382 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:38:51" (2/2) ... [2024-01-31 17:38:51,382 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:38:53,749 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 17:38:53,750 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-01-31 17:38:53,750 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 17:38:53,801 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:38:53,978 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/mix046.oepc.i[945,958] [2024-01-31 17:38:54,140 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:38:54,157 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:38:54,169 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/mix046.oepc.i[945,958] Start Parsing Local [2024-01-31 17:38:54,198 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry [2024-01-31 17:38:54,264 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:38:54,294 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:38:54,294 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:38:54 WrapperNode [2024-01-31 17:38:54,295 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:38:54,296 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:38:54,296 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:38:54,296 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:38:54,303 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 05:38:54" (1/1) ... [2024-01-31 17:38:54,326 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 05:38:54" (1/1) ... [2024-01-31 17:38:54,362 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 146 [2024-01-31 17:38:54,362 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:38:54,363 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:38:54,363 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:38:54,363 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:38:54,373 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 05:38:54" (1/1) ... [2024-01-31 17:38:54,374 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 05:38:54" (1/1) ... [2024-01-31 17:38:54,378 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 05:38:54" (1/1) ... [2024-01-31 17:38:54,401 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 17:38:54,401 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:38:54" (1/1) ... [2024-01-31 17:38:54,402 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 05:38:54" (1/1) ... [2024-01-31 17:38:54,413 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 05:38:54" (1/1) ... [2024-01-31 17:38:54,417 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 05:38:54" (1/1) ... [2024-01-31 17:38:54,421 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 05:38:54" (1/1) ... [2024-01-31 17:38:54,427 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 05:38:54" (1/1) ... [2024-01-31 17:38:54,432 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:38:54,433 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:38:54,433 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:38:54,433 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:38:54,434 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 05:38:54" (1/1) ... [2024-01-31 17:38:54,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:38:54,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:38:54,462 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 17:38:54,496 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 17:38:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:38:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:38:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:38:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:38:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 17:38:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:38:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:38:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:38:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:38:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-31 17:38:54,519 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-31 17:38:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-31 17:38:54,519 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-31 17:38:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-31 17:38:54,520 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-31 17:38:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-01-31 17:38:54,521 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-01-31 17:38:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:38:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:38:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:38:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:38:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 17:38:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:38:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:38:54,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:38:54,524 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 17:38:54,691 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:38:54,693 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:38:55,045 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:38:55,046 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:38:55,222 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:38:55,223 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 17:38:55,223 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:38:55 BoogieIcfgContainer [2024-01-31 17:38:55,223 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:38:55,225 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:38:55,225 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:38:55,229 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:38:55,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:38:50" (1/4) ... [2024-01-31 17:38:55,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16cbcb46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:38:55, skipping insertion in model container [2024-01-31 17:38:55,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:38:51" (2/4) ... [2024-01-31 17:38:55,232 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16cbcb46 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:38:55, skipping insertion in model container [2024-01-31 17:38:55,232 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 05:38:54" (3/4) ... [2024-01-31 17:38:55,232 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16cbcb46 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:38:55, skipping insertion in model container [2024-01-31 17:38:55,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:38:55" (4/4) ... [2024-01-31 17:38:55,234 INFO L112 eAbstractionObserver]: Analyzing ICFG mix046.oepc.i [2024-01-31 17:38:55,250 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:38:55,250 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-01-31 17:38:55,250 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:38:55,308 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 17:38:55,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 53 transitions, 122 flow [2024-01-31 17:38:55,382 INFO L124 PetriNetUnfolderBase]: 1/49 cut-off events. [2024-01-31 17:38:55,382 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:38:55,386 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 17:38:55,387 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 53 transitions, 122 flow [2024-01-31 17:38:55,391 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 49 transitions, 110 flow [2024-01-31 17:38:55,404 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:38:55,411 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;@698d8dd0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:38:55,411 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-01-31 17:38:55,418 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:38:55,419 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-01-31 17:38:55,419 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:38:55,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:38:55,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 17:38:55,420 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 17:38:55,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:38:55,425 INFO L85 PathProgramCache]: Analyzing trace with hash 12465535, now seen corresponding path program 1 times [2024-01-31 17:38:55,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:38:55,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328030391] [2024-01-31 17:38:55,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:38:55,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:38:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:38:55,728 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 17:38:55,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:38:55,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328030391] [2024-01-31 17:38:55,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328030391] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:38:55,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:38:55,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:38:55,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478912714] [2024-01-31 17:38:55,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:38:55,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-31 17:38:55,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:38:55,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-31 17:38:55,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-31 17:38:55,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2024-01-31 17:38:55,772 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 17:38:55,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:38:55,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2024-01-31 17:38:55,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:38:56,739 INFO L124 PetriNetUnfolderBase]: 3179/5553 cut-off events. [2024-01-31 17:38:56,739 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:38:56,755 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 17:38:56,785 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 24 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2024-01-31 17:38:56,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 47 transitions, 154 flow [2024-01-31 17:38:56,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-31 17:38:56,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-31 17:38:56,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2024-01-31 17:38:56,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7547169811320755 [2024-01-31 17:38:56,800 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 110 flow. Second operand 2 states and 80 transitions. [2024-01-31 17:38:56,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 47 transitions, 154 flow [2024-01-31 17:38:56,806 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 17:38:56,811 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 102 flow [2024-01-31 17:38:56,813 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 17:38:56,816 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2024-01-31 17:38:56,817 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 102 flow [2024-01-31 17:38:56,817 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 17:38:56,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:38:56,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 17:38:56,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:38:56,818 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 17:38:56,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:38:56,821 INFO L85 PathProgramCache]: Analyzing trace with hash 12465536, now seen corresponding path program 1 times [2024-01-31 17:38:56,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:38:56,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27391016] [2024-01-31 17:38:56,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:38:56,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:38:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:38:57,086 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 17:38:57,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:38:57,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27391016] [2024-01-31 17:38:57,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27391016] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:38:57,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:38:57,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:38:57,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662410722] [2024-01-31 17:38:57,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:38:57,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:38:57,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:38:57,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:38:57,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:38:57,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2024-01-31 17:38:57,090 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 17:38:57,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:38:57,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2024-01-31 17:38:57,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:38:57,634 INFO L124 PetriNetUnfolderBase]: 2495/4181 cut-off events. [2024-01-31 17:38:57,634 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:38:57,643 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 17:38:57,663 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 37 selfloop transitions, 2 changer transitions 2/64 dead transitions. [2024-01-31 17:38:57,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 64 transitions, 224 flow [2024-01-31 17:38:57,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:38:57,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:38:57,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-01-31 17:38:57,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7735849056603774 [2024-01-31 17:38:57,671 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 102 flow. Second operand 3 states and 123 transitions. [2024-01-31 17:38:57,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 64 transitions, 224 flow [2024-01-31 17:38:57,677 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 17:38:57,679 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 102 flow [2024-01-31 17:38:57,679 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 17:38:57,680 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2024-01-31 17:38:57,680 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 102 flow [2024-01-31 17:38:57,681 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 17:38:57,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:38:57,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:38:57,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:38:57,681 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 17:38:57,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:38:57,682 INFO L85 PathProgramCache]: Analyzing trace with hash 726951668, now seen corresponding path program 1 times [2024-01-31 17:38:57,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:38:57,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886546456] [2024-01-31 17:38:57,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:38:57,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:38:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:38:57,775 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 17:38:57,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:38:57,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886546456] [2024-01-31 17:38:57,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886546456] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:38:57,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:38:57,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:38:57,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560304415] [2024-01-31 17:38:57,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:38:57,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:38:57,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:38:57,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:38:57,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:38:57,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 53 [2024-01-31 17:38:57,782 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 17:38:57,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:38:57,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 53 [2024-01-31 17:38:57,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:38:58,456 INFO L124 PetriNetUnfolderBase]: 3311/5247 cut-off events. [2024-01-31 17:38:58,457 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-01-31 17:38:58,472 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 17:38:58,499 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 33 selfloop transitions, 1 changer transitions 1/54 dead transitions. [2024-01-31 17:38:58,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 192 flow [2024-01-31 17:38:58,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:38:58,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:38:58,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-01-31 17:38:58,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.660377358490566 [2024-01-31 17:38:58,505 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 102 flow. Second operand 3 states and 105 transitions. [2024-01-31 17:38:58,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 192 flow [2024-01-31 17:38:58,506 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 17:38:58,508 INFO L231 Difference]: Finished difference. Result has 56 places, 43 transitions, 96 flow [2024-01-31 17:38:58,508 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 17:38:58,509 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2024-01-31 17:38:58,510 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 43 transitions, 96 flow [2024-01-31 17:38:58,510 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 17:38:58,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:38:58,510 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 17:38:58,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:38:58,511 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 17:38:58,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:38:58,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1060665648, now seen corresponding path program 1 times [2024-01-31 17:38:58,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:38:58,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789158077] [2024-01-31 17:38:58,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:38:58,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:38:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:38:58,843 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 17:38:58,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:38:58,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789158077] [2024-01-31 17:38:58,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789158077] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:38:58,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:38:58,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:38:58,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576782922] [2024-01-31 17:38:58,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:38:58,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:38:58,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:38:58,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:38:58,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:38:58,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-01-31 17:38:58,869 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 17:38:58,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:38:58,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-01-31 17:38:58,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:03,338 INFO L124 PetriNetUnfolderBase]: 33479/48396 cut-off events. [2024-01-31 17:39:03,339 INFO L125 PetriNetUnfolderBase]: For 1027/1027 co-relation queries the response was YES. [2024-01-31 17:39:03,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94828 conditions, 48396 events. 33479/48396 cut-off events. For 1027/1027 co-relation queries the response was YES. Maximal size of possible extension queue 2028. Compared 353426 event pairs, 9854 based on Foata normal form. 1110/49153 useless extension candidates. Maximal degree in co-relation 94824. Up to 20485 conditions per place. [2024-01-31 17:39:03,679 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 51 selfloop transitions, 8 changer transitions 67/138 dead transitions. [2024-01-31 17:39:03,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 138 transitions, 546 flow [2024-01-31 17:39:03,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:39:03,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:39:03,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 240 transitions. [2024-01-31 17:39:03,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6469002695417789 [2024-01-31 17:39:03,682 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 96 flow. Second operand 7 states and 240 transitions. [2024-01-31 17:39:03,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 138 transitions, 546 flow [2024-01-31 17:39:03,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 138 transitions, 544 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:39:03,986 INFO L231 Difference]: Finished difference. Result has 66 places, 50 transitions, 193 flow [2024-01-31 17:39:03,986 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 17:39:03,987 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 5 predicate places. [2024-01-31 17:39:03,987 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 50 transitions, 193 flow [2024-01-31 17:39:03,987 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 17:39:03,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:03,988 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 17:39:03,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:39:03,988 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 17:39:03,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:03,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1824309807, now seen corresponding path program 1 times [2024-01-31 17:39:03,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:03,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743306840] [2024-01-31 17:39:03,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:03,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:04,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:39:04,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:04,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743306840] [2024-01-31 17:39:04,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743306840] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:04,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:04,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:39:04,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173656741] [2024-01-31 17:39:04,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:04,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:39:04,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:04,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:39:04,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:39:04,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-01-31 17:39:04,205 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 17:39:04,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:04,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-01-31 17:39:04,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:08,595 INFO L124 PetriNetUnfolderBase]: 31328/45608 cut-off events. [2024-01-31 17:39:08,595 INFO L125 PetriNetUnfolderBase]: For 47031/47072 co-relation queries the response was YES. [2024-01-31 17:39:08,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128475 conditions, 45608 events. 31328/45608 cut-off events. For 47031/47072 co-relation queries the response was YES. Maximal size of possible extension queue 1940. Compared 334653 event pairs, 2501 based on Foata normal form. 1052/46497 useless extension candidates. Maximal degree in co-relation 128466. Up to 19009 conditions per place. [2024-01-31 17:39:08,951 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 63 selfloop transitions, 12 changer transitions 96/183 dead transitions. [2024-01-31 17:39:08,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 183 transitions, 1106 flow [2024-01-31 17:39:08,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:39:08,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:39:08,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 321 transitions. [2024-01-31 17:39:08,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6056603773584905 [2024-01-31 17:39:08,953 INFO L175 Difference]: Start difference. First operand has 66 places, 50 transitions, 193 flow. Second operand 10 states and 321 transitions. [2024-01-31 17:39:08,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 183 transitions, 1106 flow [2024-01-31 17:39:09,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 183 transitions, 1032 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:39:09,075 INFO L231 Difference]: Finished difference. Result has 78 places, 57 transitions, 305 flow [2024-01-31 17:39:09,076 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=305, PETRI_PLACES=78, PETRI_TRANSITIONS=57} [2024-01-31 17:39:09,076 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 17 predicate places. [2024-01-31 17:39:09,077 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 57 transitions, 305 flow [2024-01-31 17:39:09,077 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 17:39:09,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:09,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:39:09,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 17:39:09,077 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 17:39:09,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:09,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1526261299, now seen corresponding path program 1 times [2024-01-31 17:39:09,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:09,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165140867] [2024-01-31 17:39:09,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:09,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:09,230 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 17:39:09,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:09,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165140867] [2024-01-31 17:39:09,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165140867] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:09,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:09,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:39:09,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365128155] [2024-01-31 17:39:09,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:09,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:39:09,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:09,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:39:09,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:39:09,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-01-31 17:39:09,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 57 transitions, 305 flow. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:39:09,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:09,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-01-31 17:39:09,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:12,926 INFO L124 PetriNetUnfolderBase]: 23124/35995 cut-off events. [2024-01-31 17:39:12,926 INFO L125 PetriNetUnfolderBase]: For 78961/79812 co-relation queries the response was YES. [2024-01-31 17:39:13,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107262 conditions, 35995 events. 23124/35995 cut-off events. For 78961/79812 co-relation queries the response was YES. Maximal size of possible extension queue 1825. Compared 290751 event pairs, 8869 based on Foata normal form. 1164/36382 useless extension candidates. Maximal degree in co-relation 107245. Up to 24985 conditions per place. [2024-01-31 17:39:13,442 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 44 selfloop transitions, 6 changer transitions 49/124 dead transitions. [2024-01-31 17:39:13,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 124 transitions, 813 flow [2024-01-31 17:39:13,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:39:13,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:39:13,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2024-01-31 17:39:13,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6118598382749326 [2024-01-31 17:39:13,445 INFO L175 Difference]: Start difference. First operand has 78 places, 57 transitions, 305 flow. Second operand 7 states and 227 transitions. [2024-01-31 17:39:13,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 124 transitions, 813 flow [2024-01-31 17:39:13,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 124 transitions, 797 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-01-31 17:39:13,729 INFO L231 Difference]: Finished difference. Result has 83 places, 62 transitions, 387 flow [2024-01-31 17:39:13,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=387, PETRI_PLACES=83, PETRI_TRANSITIONS=62} [2024-01-31 17:39:13,733 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 22 predicate places. [2024-01-31 17:39:13,733 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 62 transitions, 387 flow [2024-01-31 17:39:13,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:39:13,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:13,734 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 17:39:13,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 17:39:13,734 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 17:39:13,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:13,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1691384944, now seen corresponding path program 1 times [2024-01-31 17:39:13,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:13,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753317259] [2024-01-31 17:39:13,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:13,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:13,934 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 17:39:13,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:13,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753317259] [2024-01-31 17:39:13,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753317259] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:13,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:13,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:39:13,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353992060] [2024-01-31 17:39:13,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:13,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:39:13,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:13,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:39:13,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:39:13,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-01-31 17:39:13,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 62 transitions, 387 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 17:39:13,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:13,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-01-31 17:39:13,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:18,334 INFO L124 PetriNetUnfolderBase]: 26581/38643 cut-off events. [2024-01-31 17:39:18,334 INFO L125 PetriNetUnfolderBase]: For 123086/123197 co-relation queries the response was YES. [2024-01-31 17:39:18,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129996 conditions, 38643 events. 26581/38643 cut-off events. For 123086/123197 co-relation queries the response was YES. Maximal size of possible extension queue 1573. Compared 273955 event pairs, 4507 based on Foata normal form. 933/39444 useless extension candidates. Maximal degree in co-relation 129973. Up to 13185 conditions per place. [2024-01-31 17:39:18,756 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 76 selfloop transitions, 9 changer transitions 94/191 dead transitions. [2024-01-31 17:39:18,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 191 transitions, 1478 flow [2024-01-31 17:39:18,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:39:18,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:39:18,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 312 transitions. [2024-01-31 17:39:18,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5886792452830188 [2024-01-31 17:39:18,759 INFO L175 Difference]: Start difference. First operand has 83 places, 62 transitions, 387 flow. Second operand 10 states and 312 transitions. [2024-01-31 17:39:18,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 191 transitions, 1478 flow [2024-01-31 17:39:18,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 191 transitions, 1426 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-01-31 17:39:18,967 INFO L231 Difference]: Finished difference. Result has 90 places, 67 transitions, 471 flow [2024-01-31 17:39:18,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=471, PETRI_PLACES=90, PETRI_TRANSITIONS=67} [2024-01-31 17:39:18,968 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 29 predicate places. [2024-01-31 17:39:18,968 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 67 transitions, 471 flow [2024-01-31 17:39:18,968 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 17:39:18,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:18,969 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 17:39:18,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 17:39:18,969 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 17:39:18,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:18,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1240969811, now seen corresponding path program 1 times [2024-01-31 17:39:18,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:18,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777229179] [2024-01-31 17:39:18,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:18,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:19,152 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 17:39:19,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:19,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777229179] [2024-01-31 17:39:19,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777229179] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:19,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:19,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:39:19,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679451481] [2024-01-31 17:39:19,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:19,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:39:19,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:19,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:39:19,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:39:19,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:39:19,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 67 transitions, 471 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 17:39:19,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:19,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:39:19,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:23,765 INFO L124 PetriNetUnfolderBase]: 29174/45681 cut-off events. [2024-01-31 17:39:23,765 INFO L125 PetriNetUnfolderBase]: For 102905/108732 co-relation queries the response was YES. [2024-01-31 17:39:24,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126615 conditions, 45681 events. 29174/45681 cut-off events. For 102905/108732 co-relation queries the response was YES. Maximal size of possible extension queue 1837. Compared 367056 event pairs, 4175 based on Foata normal form. 2229/46346 useless extension candidates. Maximal degree in co-relation 126590. Up to 22140 conditions per place. [2024-01-31 17:39:24,210 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 56 selfloop transitions, 6 changer transitions 0/101 dead transitions. [2024-01-31 17:39:24,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 101 transitions, 701 flow [2024-01-31 17:39:24,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:39:24,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:39:24,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2024-01-31 17:39:24,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7028301886792453 [2024-01-31 17:39:24,211 INFO L175 Difference]: Start difference. First operand has 90 places, 67 transitions, 471 flow. Second operand 4 states and 149 transitions. [2024-01-31 17:39:24,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 101 transitions, 701 flow [2024-01-31 17:39:25,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 101 transitions, 676 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-01-31 17:39:25,196 INFO L231 Difference]: Finished difference. Result has 85 places, 72 transitions, 492 flow [2024-01-31 17:39:25,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=492, PETRI_PLACES=85, PETRI_TRANSITIONS=72} [2024-01-31 17:39:25,197 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 24 predicate places. [2024-01-31 17:39:25,197 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 72 transitions, 492 flow [2024-01-31 17:39:25,198 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 17:39:25,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:25,198 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 17:39:25,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 17:39:25,198 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 17:39:25,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:25,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1674189171, now seen corresponding path program 1 times [2024-01-31 17:39:25,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:25,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377829289] [2024-01-31 17:39:25,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:25,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:25,397 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 17:39:25,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:25,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377829289] [2024-01-31 17:39:25,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377829289] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:25,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:25,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:39:25,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762431645] [2024-01-31 17:39:25,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:25,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:39:25,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:25,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:39:25,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:39:25,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-01-31 17:39:25,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 72 transitions, 492 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:39:25,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:25,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-01-31 17:39:25,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:34,130 INFO L124 PetriNetUnfolderBase]: 54366/80937 cut-off events. [2024-01-31 17:39:34,130 INFO L125 PetriNetUnfolderBase]: For 204245/208156 co-relation queries the response was YES. [2024-01-31 17:39:34,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257885 conditions, 80937 events. 54366/80937 cut-off events. For 204245/208156 co-relation queries the response was YES. Maximal size of possible extension queue 3226. Compared 654352 event pairs, 11907 based on Foata normal form. 1348/77808 useless extension candidates. Maximal degree in co-relation 257860. Up to 30053 conditions per place. [2024-01-31 17:39:34,986 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 154 selfloop transitions, 36 changer transitions 0/207 dead transitions. [2024-01-31 17:39:34,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 207 transitions, 1538 flow [2024-01-31 17:39:34,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:39:34,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:39:34,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 322 transitions. [2024-01-31 17:39:34,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6075471698113207 [2024-01-31 17:39:34,988 INFO L175 Difference]: Start difference. First operand has 85 places, 72 transitions, 492 flow. Second operand 10 states and 322 transitions. [2024-01-31 17:39:34,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 207 transitions, 1538 flow [2024-01-31 17:39:37,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 207 transitions, 1496 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-01-31 17:39:37,081 INFO L231 Difference]: Finished difference. Result has 97 places, 94 transitions, 889 flow [2024-01-31 17:39:37,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=889, PETRI_PLACES=97, PETRI_TRANSITIONS=94} [2024-01-31 17:39:37,082 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 36 predicate places. [2024-01-31 17:39:37,082 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 94 transitions, 889 flow [2024-01-31 17:39:37,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:39:37,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:37,083 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 17:39:37,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 17:39:37,083 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 17:39:37,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:37,084 INFO L85 PathProgramCache]: Analyzing trace with hash 472369941, now seen corresponding path program 1 times [2024-01-31 17:39:37,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:37,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007205054] [2024-01-31 17:39:37,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:37,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:37,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:37,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:39:37,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:37,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007205054] [2024-01-31 17:39:37,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007205054] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:37,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:37,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:39:37,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636987841] [2024-01-31 17:39:37,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:37,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:39:37,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:37,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:39:37,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:39:37,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:39:37,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 94 transitions, 889 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 17:39:37,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:37,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:39:37,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand