./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-barrier.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/parallel-barrier.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/parallel-barrier.wvr.c ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/parallel-barrier.wvr.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-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:06:48,649 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:06:48,747 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:06:48,751 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:06:48,751 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:06:48,777 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:06:48,778 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:06:48,778 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:06:48,779 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:06:48,782 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:06:48,782 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:06:48,782 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:06:48,783 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:06:48,784 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:06:48,784 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:06:48,784 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:06:48,784 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:06:48,785 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:06:48,785 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:06:48,785 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:06:48,785 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:06:48,786 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:06:48,786 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:06:48,786 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:06:48,786 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:06:48,786 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:06:48,787 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:06:48,787 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:06:48,787 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:06:48,787 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:06:48,788 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:06:48,789 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:06:48,789 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:06:48,789 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:06:48,789 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:06:48,789 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:06:48,789 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:06:48,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:06:48,790 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:06:48,790 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:06:48,790 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:06:48,790 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:06:48,790 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:06:48,791 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:06:48,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:06:49,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:06:49,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:06:49,003 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:06:49,003 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:06:49,004 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/parallel-barrier.wvr.yml/witness.yml [2024-06-28 01:06:49,124 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:06:49,124 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:06:49,126 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-barrier.wvr.c [2024-06-28 01:06:50,138 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:06:50,318 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:06:50,319 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-barrier.wvr.c [2024-06-28 01:06:50,326 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33c0a6a57/f91946b9274c44d8b90f88a49847aad4/FLAGde2d88dc2 [2024-06-28 01:06:50,341 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33c0a6a57/f91946b9274c44d8b90f88a49847aad4 [2024-06-28 01:06:50,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:06:50,343 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:06:50,345 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:06:50,345 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:06:50,349 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:06:50,350 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:06:49" (1/2) ... [2024-06-28 01:06:50,351 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b89b12d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:50, skipping insertion in model container [2024-06-28 01:06:50,351 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:06:49" (1/2) ... [2024-06-28 01:06:50,353 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1c51e2cd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:50, skipping insertion in model container [2024-06-28 01:06:50,354 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:06:50" (2/2) ... [2024-06-28 01:06:50,354 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b89b12d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:50, skipping insertion in model container [2024-06-28 01:06:50,355 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:06:50" (2/2) ... [2024-06-28 01:06:50,355 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:06:50,378 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:06:50,379 INFO L97 edCorrectnessWitness]: Location invariant before [L166-L166] (! multithreaded || -2147483647 <= y_7) && (! multithreaded || -2147483647 <= y_7) [2024-06-28 01:06:50,379 INFO L97 edCorrectnessWitness]: Location invariant before [L165-L165] (! multithreaded || -2147483647 <= y_7) && (! multithreaded || -2147483647 <= y_7) [2024-06-28 01:06:50,380 INFO L97 edCorrectnessWitness]: Location invariant before [L193-L193] (! multithreaded || -2147483647 <= y_7) && (! multithreaded || -2147483647 <= y_7) [2024-06-28 01:06:50,380 INFO L97 edCorrectnessWitness]: Location invariant before [L194-L194] (! multithreaded || -2147483647 <= y_7) && (! multithreaded || -2147483647 <= y_7) [2024-06-28 01:06:50,380 INFO L97 edCorrectnessWitness]: Location invariant before [L102-L102] (! multithreaded || -2147483647 <= y_7) && (! multithreaded || -2147483647 <= y_7) [2024-06-28 01:06:50,380 INFO L97 edCorrectnessWitness]: Location invariant before [L103-L103] (! multithreaded || -2147483647 <= y_7) && (! multithreaded || -2147483647 <= y_7) [2024-06-28 01:06:50,380 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:06:50,380 INFO L106 edCorrectnessWitness]: ghost_update [L192-L192] multithreaded = 1; [2024-06-28 01:06:50,402 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:06:50,590 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-barrier.wvr.c[4800,4813] [2024-06-28 01:06:50,596 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:06:50,603 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:06:50,671 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-barrier.wvr.c[4800,4813] [2024-06-28 01:06:50,672 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:06:50,684 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:06:50,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:50 WrapperNode [2024-06-28 01:06:50,685 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:06:50,686 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:06:50,686 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:06:50,686 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:06:50,691 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:50" (1/1) ... [2024-06-28 01:06:50,699 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:50" (1/1) ... [2024-06-28 01:06:50,720 INFO L138 Inliner]: procedures = 24, calls = 68, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 247 [2024-06-28 01:06:50,721 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:06:50,721 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:06:50,721 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:06:50,721 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:06:50,734 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:50" (1/1) ... [2024-06-28 01:06:50,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:50" (1/1) ... [2024-06-28 01:06:50,744 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:50" (1/1) ... [2024-06-28 01:06:50,761 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 01:06:50,764 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:50" (1/1) ... [2024-06-28 01:06:50,764 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:50" (1/1) ... [2024-06-28 01:06:50,771 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:50" (1/1) ... [2024-06-28 01:06:50,776 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:50" (1/1) ... [2024-06-28 01:06:50,777 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:50" (1/1) ... [2024-06-28 01:06:50,780 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:50" (1/1) ... [2024-06-28 01:06:50,784 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:06:50,784 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:06:50,785 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:06:50,785 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:06:50,785 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:50" (1/1) ... [2024-06-28 01:06:50,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:06:50,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:06:50,807 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:06:50,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:06:50,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:06:50,856 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-28 01:06:50,857 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-28 01:06:50,857 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-28 01:06:50,857 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-28 01:06:50,857 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-28 01:06:50,857 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-28 01:06:50,858 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-06-28 01:06:50,858 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-06-28 01:06:50,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:06:50,859 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-06-28 01:06:50,860 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-06-28 01:06:50,860 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-06-28 01:06:50,861 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-06-28 01:06:50,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:06:50,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:06:50,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:06:50,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:06:50,862 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:06:50,969 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:06:50,971 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:06:51,306 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:06:51,306 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:06:51,538 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:06:51,561 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:06:51,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:06:51 BoogieIcfgContainer [2024-06-28 01:06:51,561 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:06:51,563 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:06:51,565 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:06:51,568 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:06:51,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:06:49" (1/4) ... [2024-06-28 01:06:51,569 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6328aaaa and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:06:51, skipping insertion in model container [2024-06-28 01:06:51,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:06:50" (2/4) ... [2024-06-28 01:06:51,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6328aaaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:06:51, skipping insertion in model container [2024-06-28 01:06:51,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:50" (3/4) ... [2024-06-28 01:06:51,571 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6328aaaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:06:51, skipping insertion in model container [2024-06-28 01:06:51,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:06:51" (4/4) ... [2024-06-28 01:06:51,572 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2024-06-28 01:06:51,586 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:06:51,586 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-06-28 01:06:51,586 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:06:51,667 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2024-06-28 01:06:51,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 87 transitions, 240 flow [2024-06-28 01:06:51,746 INFO L124 PetriNetUnfolderBase]: 4/75 cut-off events. [2024-06-28 01:06:51,746 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 01:06:51,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 75 events. 4/75 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 203 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 85. Up to 3 conditions per place. [2024-06-28 01:06:51,753 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 87 transitions, 240 flow [2024-06-28 01:06:51,761 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 74 transitions, 196 flow [2024-06-28 01:06:51,771 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:06:51,776 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;@1399e72a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:06:51,777 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-06-28 01:06:51,779 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:06:51,780 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:06:51,780 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:06:51,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:51,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:06:51,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2024-06-28 01:06:51,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:51,787 INFO L85 PathProgramCache]: Analyzing trace with hash 489226783, now seen corresponding path program 1 times [2024-06-28 01:06:51,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:51,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571352400] [2024-06-28 01:06:51,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:51,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:52,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:52,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:52,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571352400] [2024-06-28 01:06:52,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571352400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:52,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:52,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:06:52,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849734130] [2024-06-28 01:06:52,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:52,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:06:52,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:52,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:06:52,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:06:52,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 91 [2024-06-28 01:06:52,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 74 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:06:52,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:52,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 91 [2024-06-28 01:06:52,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:55,360 INFO L124 PetriNetUnfolderBase]: 30782/41161 cut-off events. [2024-06-28 01:06:55,361 INFO L125 PetriNetUnfolderBase]: For 4560/4560 co-relation queries the response was YES. [2024-06-28 01:06:55,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86287 conditions, 41161 events. 30782/41161 cut-off events. For 4560/4560 co-relation queries the response was YES. Maximal size of possible extension queue 1674. Compared 266325 event pairs, 9743 based on Foata normal form. 789/38470 useless extension candidates. Maximal degree in co-relation 85754. Up to 36294 conditions per place. [2024-06-28 01:06:55,803 INFO L140 encePairwiseOnDemand]: 82/91 looper letters, 67 selfloop transitions, 3 changer transitions 0/97 dead transitions. [2024-06-28 01:06:55,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 97 transitions, 406 flow [2024-06-28 01:06:55,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:06:55,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:06:55,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2024-06-28 01:06:55,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6410256410256411 [2024-06-28 01:06:55,815 INFO L175 Difference]: Start difference. First operand has 89 places, 74 transitions, 196 flow. Second operand 3 states and 175 transitions. [2024-06-28 01:06:55,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 97 transitions, 406 flow [2024-06-28 01:06:55,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 97 transitions, 358 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-06-28 01:06:55,864 INFO L231 Difference]: Finished difference. Result has 79 places, 75 transitions, 189 flow [2024-06-28 01:06:55,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=189, PETRI_PLACES=79, PETRI_TRANSITIONS=75} [2024-06-28 01:06:55,868 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -10 predicate places. [2024-06-28 01:06:55,869 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 75 transitions, 189 flow [2024-06-28 01:06:55,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:06:55,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:55,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:06:55,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:06:55,870 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2024-06-28 01:06:55,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:55,872 INFO L85 PathProgramCache]: Analyzing trace with hash 427770879, now seen corresponding path program 1 times [2024-06-28 01:06:55,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:55,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686635890] [2024-06-28 01:06:55,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:55,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:56,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:56,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:56,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686635890] [2024-06-28 01:06:56,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686635890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:56,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:56,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:06:56,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934520767] [2024-06-28 01:06:56,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:56,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:06:56,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:56,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:06:56,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:06:56,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 91 [2024-06-28 01:06:56,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 75 transitions, 189 flow. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:06:56,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:56,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 91 [2024-06-28 01:06:56,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:07:00,581 INFO L124 PetriNetUnfolderBase]: 55871/76492 cut-off events. [2024-06-28 01:07:00,581 INFO L125 PetriNetUnfolderBase]: For 11386/11386 co-relation queries the response was YES. [2024-06-28 01:07:00,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163806 conditions, 76492 events. 55871/76492 cut-off events. For 11386/11386 co-relation queries the response was YES. Maximal size of possible extension queue 3306. Compared 548075 event pairs, 10578 based on Foata normal form. 5052/77412 useless extension candidates. Maximal degree in co-relation 39416. Up to 34461 conditions per place. [2024-06-28 01:07:00,965 INFO L140 encePairwiseOnDemand]: 82/91 looper letters, 163 selfloop transitions, 10 changer transitions 0/198 dead transitions. [2024-06-28 01:07:00,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 198 transitions, 841 flow [2024-06-28 01:07:00,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:07:00,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:07:00,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 398 transitions. [2024-06-28 01:07:00,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6248037676609105 [2024-06-28 01:07:00,974 INFO L175 Difference]: Start difference. First operand has 79 places, 75 transitions, 189 flow. Second operand 7 states and 398 transitions. [2024-06-28 01:07:00,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 198 transitions, 841 flow [2024-06-28 01:07:00,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 198 transitions, 837 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:07:00,980 INFO L231 Difference]: Finished difference. Result has 88 places, 81 transitions, 259 flow [2024-06-28 01:07:00,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=259, PETRI_PLACES=88, PETRI_TRANSITIONS=81} [2024-06-28 01:07:00,985 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -1 predicate places. [2024-06-28 01:07:00,985 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 81 transitions, 259 flow [2024-06-28 01:07:00,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:07:00,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:07:00,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:07:00,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:07:00,986 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2024-06-28 01:07:00,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:07:00,988 INFO L85 PathProgramCache]: Analyzing trace with hash -927702356, now seen corresponding path program 1 times [2024-06-28 01:07:00,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:07:00,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128325211] [2024-06-28 01:07:00,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:07:00,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:07:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:07:01,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:07:01,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:07:01,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128325211] [2024-06-28 01:07:01,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128325211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:07:01,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:07:01,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:07:01,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006623762] [2024-06-28 01:07:01,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:07:01,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:07:01,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:07:01,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:07:01,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:07:01,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 91 [2024-06-28 01:07:01,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 81 transitions, 259 flow. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:07:01,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:07:01,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 91 [2024-06-28 01:07:01,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:07:01,893 INFO L124 PetriNetUnfolderBase]: 7485/12119 cut-off events. [2024-06-28 01:07:01,894 INFO L125 PetriNetUnfolderBase]: For 1553/1553 co-relation queries the response was YES. [2024-06-28 01:07:01,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26281 conditions, 12119 events. 7485/12119 cut-off events. For 1553/1553 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 84554 event pairs, 5024 based on Foata normal form. 138/11097 useless extension candidates. Maximal degree in co-relation 19779. Up to 8048 conditions per place. [2024-06-28 01:07:01,979 INFO L140 encePairwiseOnDemand]: 88/91 looper letters, 56 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2024-06-28 01:07:01,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 92 transitions, 378 flow [2024-06-28 01:07:01,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:07:01,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:07:01,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 179 transitions. [2024-06-28 01:07:01,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6556776556776557 [2024-06-28 01:07:01,996 INFO L175 Difference]: Start difference. First operand has 88 places, 81 transitions, 259 flow. Second operand 3 states and 179 transitions. [2024-06-28 01:07:01,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 92 transitions, 378 flow [2024-06-28 01:07:02,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 92 transitions, 361 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 01:07:02,016 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 210 flow [2024-06-28 01:07:02,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2024-06-28 01:07:02,017 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -5 predicate places. [2024-06-28 01:07:02,017 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 210 flow [2024-06-28 01:07:02,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:07:02,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:07:02,017 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] [2024-06-28 01:07:02,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:07:02,018 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2024-06-28 01:07:02,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:07:02,018 INFO L85 PathProgramCache]: Analyzing trace with hash 2113465607, now seen corresponding path program 1 times [2024-06-28 01:07:02,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:07:02,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3385377] [2024-06-28 01:07:02,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:07:02,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:07:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:07:02,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:07:02,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:07:02,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3385377] [2024-06-28 01:07:02,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3385377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:07:02,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:07:02,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:07:02,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624249196] [2024-06-28 01:07:02,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:07:02,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:07:02,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:07:02,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:07:02,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:07:02,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 91 [2024-06-28 01:07:02,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 210 flow. Second operand has 7 states, 7 states have (on average 31.571428571428573) internal successors, (221), 7 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:07:02,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:07:02,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 91 [2024-06-28 01:07:02,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:07:03,720 INFO L124 PetriNetUnfolderBase]: 16073/22324 cut-off events. [2024-06-28 01:07:03,720 INFO L125 PetriNetUnfolderBase]: For 11421/11421 co-relation queries the response was YES. [2024-06-28 01:07:03,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47810 conditions, 22324 events. 16073/22324 cut-off events. For 11421/11421 co-relation queries the response was YES. Maximal size of possible extension queue 815. Compared 138267 event pairs, 2305 based on Foata normal form. 1828/22920 useless extension candidates. Maximal degree in co-relation 28432. Up to 3887 conditions per place. [2024-06-28 01:07:03,811 INFO L140 encePairwiseOnDemand]: 81/91 looper letters, 176 selfloop transitions, 10 changer transitions 0/209 dead transitions. [2024-06-28 01:07:03,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 209 transitions, 885 flow [2024-06-28 01:07:03,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:07:03,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:07:03,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 484 transitions. [2024-06-28 01:07:03,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5318681318681319 [2024-06-28 01:07:03,813 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 210 flow. Second operand 10 states and 484 transitions. [2024-06-28 01:07:03,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 209 transitions, 885 flow [2024-06-28 01:07:03,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 209 transitions, 872 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 01:07:03,858 INFO L231 Difference]: Finished difference. Result has 84 places, 72 transitions, 193 flow [2024-06-28 01:07:03,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=193, PETRI_PLACES=84, PETRI_TRANSITIONS=72} [2024-06-28 01:07:03,859 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -5 predicate places. [2024-06-28 01:07:03,859 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 72 transitions, 193 flow [2024-06-28 01:07:03,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.571428571428573) internal successors, (221), 7 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:07:03,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:07:03,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:07:03,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:07:03,860 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2024-06-28 01:07:03,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:07:03,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1522049109, now seen corresponding path program 1 times [2024-06-28 01:07:03,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:07:03,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739304367] [2024-06-28 01:07:03,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:07:03,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:07:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:07:03,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:07:03,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:07:03,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739304367] [2024-06-28 01:07:03,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739304367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:07:03,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:07:03,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:07:03,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410433999] [2024-06-28 01:07:03,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:07:03,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:07:03,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:07:03,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:07:03,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:07:03,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 91 [2024-06-28 01:07:03,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 72 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:07:03,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:07:03,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 91 [2024-06-28 01:07:03,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:07:04,358 INFO L124 PetriNetUnfolderBase]: 5801/8784 cut-off events. [2024-06-28 01:07:04,358 INFO L125 PetriNetUnfolderBase]: For 691/691 co-relation queries the response was YES. [2024-06-28 01:07:04,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17501 conditions, 8784 events. 5801/8784 cut-off events. For 691/691 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 51787 event pairs, 3480 based on Foata normal form. 187/8118 useless extension candidates. Maximal degree in co-relation 6116. Up to 6488 conditions per place. [2024-06-28 01:07:04,394 INFO L140 encePairwiseOnDemand]: 88/91 looper letters, 58 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2024-06-28 01:07:04,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 92 transitions, 363 flow [2024-06-28 01:07:04,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:07:04,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:07:04,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 181 transitions. [2024-06-28 01:07:04,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.663003663003663 [2024-06-28 01:07:04,396 INFO L175 Difference]: Start difference. First operand has 84 places, 72 transitions, 193 flow. Second operand 3 states and 181 transitions. [2024-06-28 01:07:04,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 92 transitions, 363 flow [2024-06-28 01:07:04,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 92 transitions, 345 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 01:07:04,398 INFO L231 Difference]: Finished difference. Result has 80 places, 72 transitions, 183 flow [2024-06-28 01:07:04,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=80, PETRI_TRANSITIONS=72} [2024-06-28 01:07:04,399 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -9 predicate places. [2024-06-28 01:07:04,399 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 72 transitions, 183 flow [2024-06-28 01:07:04,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:07:04,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:07:04,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:07:04,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:07:04,400 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2024-06-28 01:07:04,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:07:04,400 INFO L85 PathProgramCache]: Analyzing trace with hash -2041399327, now seen corresponding path program 2 times [2024-06-28 01:07:04,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:07:04,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910575665] [2024-06-28 01:07:04,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:07:04,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:07:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:07:04,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:07:04,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:07:04,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910575665] [2024-06-28 01:07:04,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910575665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:07:04,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:07:04,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:07:04,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986026278] [2024-06-28 01:07:04,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:07:04,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:07:04,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:07:04,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:07:04,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:07:04,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 91 [2024-06-28 01:07:04,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 72 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:07:04,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:07:04,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 91 [2024-06-28 01:07:04,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:07:04,945 INFO L124 PetriNetUnfolderBase]: 6451/10368 cut-off events. [2024-06-28 01:07:04,945 INFO L125 PetriNetUnfolderBase]: For 1332/1352 co-relation queries the response was YES. [2024-06-28 01:07:04,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20684 conditions, 10368 events. 6451/10368 cut-off events. For 1332/1352 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 69031 event pairs, 4219 based on Foata normal form. 67/9382 useless extension candidates. Maximal degree in co-relation 8085. Up to 7295 conditions per place. [2024-06-28 01:07:04,992 INFO L140 encePairwiseOnDemand]: 88/91 looper letters, 59 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2024-06-28 01:07:04,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 93 transitions, 360 flow [2024-06-28 01:07:04,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:07:04,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:07:04,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 182 transitions. [2024-06-28 01:07:04,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-28 01:07:04,994 INFO L175 Difference]: Start difference. First operand has 80 places, 72 transitions, 183 flow. Second operand 3 states and 182 transitions. [2024-06-28 01:07:04,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 93 transitions, 360 flow [2024-06-28 01:07:04,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 93 transitions, 354 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:07:04,996 INFO L231 Difference]: Finished difference. Result has 81 places, 72 transitions, 187 flow [2024-06-28 01:07:04,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=81, PETRI_TRANSITIONS=72} [2024-06-28 01:07:04,997 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -8 predicate places. [2024-06-28 01:07:04,997 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 72 transitions, 187 flow [2024-06-28 01:07:04,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:07:04,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:07:04,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:07:04,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:07:04,998 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2024-06-28 01:07:04,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:07:04,998 INFO L85 PathProgramCache]: Analyzing trace with hash -683699267, now seen corresponding path program 3 times [2024-06-28 01:07:04,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:07:04,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882602535] [2024-06-28 01:07:04,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:07:04,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:07:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:07:05,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:07:05,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:07:05,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882602535] [2024-06-28 01:07:05,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882602535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:07:05,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:07:05,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-06-28 01:07:05,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107305820] [2024-06-28 01:07:05,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:07:05,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-06-28 01:07:05,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:07:05,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-06-28 01:07:05,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2024-06-28 01:07:05,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 91 [2024-06-28 01:07:05,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 72 transitions, 187 flow. Second operand has 18 states, 18 states have (on average 21.833333333333332) internal successors, (393), 18 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:07:05,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:07:05,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 91 [2024-06-28 01:07:05,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:07:11,732 INFO L124 PetriNetUnfolderBase]: 77105/100638 cut-off events. [2024-06-28 01:07:11,733 INFO L125 PetriNetUnfolderBase]: For 13434/13434 co-relation queries the response was YES. [2024-06-28 01:07:12,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218139 conditions, 100638 events. 77105/100638 cut-off events. For 13434/13434 co-relation queries the response was YES. Maximal size of possible extension queue 1527. Compared 544532 event pairs, 24146 based on Foata normal form. 1/98017 useless extension candidates. Maximal degree in co-relation 65157. Up to 79392 conditions per place. [2024-06-28 01:07:12,386 INFO L140 encePairwiseOnDemand]: 73/91 looper letters, 270 selfloop transitions, 73 changer transitions 34/390 dead transitions. [2024-06-28 01:07:12,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 390 transitions, 1723 flow [2024-06-28 01:07:12,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-06-28 01:07:12,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-06-28 01:07:12,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 867 transitions. [2024-06-28 01:07:12,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36644125105663566 [2024-06-28 01:07:12,390 INFO L175 Difference]: Start difference. First operand has 81 places, 72 transitions, 187 flow. Second operand 26 states and 867 transitions. [2024-06-28 01:07:12,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 390 transitions, 1723 flow [2024-06-28 01:07:12,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 390 transitions, 1717 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:07:12,408 INFO L231 Difference]: Finished difference. Result has 115 places, 144 transitions, 590 flow [2024-06-28 01:07:12,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=590, PETRI_PLACES=115, PETRI_TRANSITIONS=144} [2024-06-28 01:07:12,408 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 26 predicate places. [2024-06-28 01:07:12,409 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 144 transitions, 590 flow [2024-06-28 01:07:12,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 21.833333333333332) internal successors, (393), 18 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:07:12,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:07:12,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:07:12,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:07:12,410 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2024-06-28 01:07:12,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:07:12,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1311622317, now seen corresponding path program 4 times [2024-06-28 01:07:12,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:07:12,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202755309] [2024-06-28 01:07:12,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:07:12,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:07:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:07:12,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:07:12,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:07:12,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202755309] [2024-06-28 01:07:12,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202755309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:07:12,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:07:12,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:07:12,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964460894] [2024-06-28 01:07:12,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:07:12,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:07:12,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:07:12,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:07:12,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:07:12,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 91 [2024-06-28 01:07:12,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 144 transitions, 590 flow. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:07:12,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:07:12,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 91 [2024-06-28 01:07:12,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:07:16,039 INFO L124 PetriNetUnfolderBase]: 20511/31703 cut-off events. [2024-06-28 01:07:16,039 INFO L125 PetriNetUnfolderBase]: For 4900/5065 co-relation queries the response was YES. [2024-06-28 01:07:16,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68659 conditions, 31703 events. 20511/31703 cut-off events. For 4900/5065 co-relation queries the response was YES. Maximal size of possible extension queue 1029. Compared 231338 event pairs, 11505 based on Foata normal form. 429/28433 useless extension candidates. Maximal degree in co-relation 68638. Up to 20525 conditions per place. [2024-06-28 01:07:16,214 INFO L140 encePairwiseOnDemand]: 88/91 looper letters, 61 selfloop transitions, 2 changer transitions 0/153 dead transitions. [2024-06-28 01:07:16,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 153 transitions, 711 flow [2024-06-28 01:07:16,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:07:16,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:07:16,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2024-06-28 01:07:16,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.673992673992674 [2024-06-28 01:07:16,216 INFO L175 Difference]: Start difference. First operand has 115 places, 144 transitions, 590 flow. Second operand 3 states and 184 transitions. [2024-06-28 01:07:16,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 153 transitions, 711 flow [2024-06-28 01:07:16,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 153 transitions, 707 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 01:07:16,248 INFO L231 Difference]: Finished difference. Result has 111 places, 130 transitions, 529 flow [2024-06-28 01:07:16,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=529, PETRI_PLACES=111, PETRI_TRANSITIONS=130} [2024-06-28 01:07:16,252 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 22 predicate places. [2024-06-28 01:07:16,253 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 130 transitions, 529 flow [2024-06-28 01:07:16,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:07:16,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:07:16,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:07:16,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:07:16,253 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2024-06-28 01:07:16,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:07:16,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1450003399, now seen corresponding path program 5 times [2024-06-28 01:07:16,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:07:16,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585273296] [2024-06-28 01:07:16,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:07:16,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:07:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:07:16,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:07:16,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:07:16,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585273296] [2024-06-28 01:07:16,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585273296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:07:16,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:07:16,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-06-28 01:07:16,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995323001] [2024-06-28 01:07:16,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:07:16,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-06-28 01:07:16,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:07:16,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-06-28 01:07:16,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2024-06-28 01:07:17,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 91 [2024-06-28 01:07:17,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 130 transitions, 529 flow. Second operand has 19 states, 19 states have (on average 21.68421052631579) internal successors, (412), 19 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:07:17,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:07:17,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 91 [2024-06-28 01:07:17,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand