./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/popl20-mult-equiv.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 958ec4d9 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/popl20-mult-equiv.wvr.c ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/popl20-mult-equiv.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-dev-958ec4d-m [2024-02-07 14:40:45,664 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:40:45,741 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:40:45,746 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:40:45,747 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:40:45,777 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:40:45,778 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:40:45,779 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:40:45,779 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:40:45,783 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:40:45,783 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:40:45,784 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:40:45,784 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:40:45,785 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:40:45,786 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:40:45,786 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:40:45,786 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:40:45,787 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:40:45,787 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:40:45,787 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:40:45,787 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:40:45,788 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:40:45,788 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:40:45,788 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:40:45,789 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:40:45,789 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:40:45,789 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:40:45,789 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:40:45,790 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:40:45,790 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:40:45,791 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:40:45,791 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:40:45,792 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:40:45,792 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:40:45,792 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:40:45,792 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:40:45,793 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:40:45,793 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:40:45,793 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:40:45,793 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:40:45,793 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:40:45,794 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:40:45,794 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:40:45,794 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:40:46,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:40:46,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:40:46,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:40:46,087 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:40:46,087 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:40:46,088 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c [2024-02-07 14:40:47,208 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:40:47,385 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:40:47,386 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c [2024-02-07 14:40:47,393 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c104d49f/951221cd3d4044bea5e8d1b64c6b4234/FLAGbd9f762a6 [2024-02-07 14:40:47,405 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c104d49f/951221cd3d4044bea5e8d1b64c6b4234 [2024-02-07 14:40:47,407 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:40:47,408 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:40:47,408 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/popl20-mult-equiv.wvr.yml/witness.yml [2024-02-07 14:40:47,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:40:47,482 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:40:47,483 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:40:47,483 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:40:47,487 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:40:47,488 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:40:47" (1/2) ... [2024-02-07 14:40:47,489 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75d4b53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:40:47, skipping insertion in model container [2024-02-07 14:40:47,489 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:40:47" (1/2) ... [2024-02-07 14:40:47,491 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4384d41a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:40:47, skipping insertion in model container [2024-02-07 14:40:47,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:40:47" (2/2) ... [2024-02-07 14:40:47,492 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75d4b53 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:40:47, skipping insertion in model container [2024-02-07 14:40:47,492 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:40:47" (2/2) ... [2024-02-07 14:40:47,492 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:40:47,514 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:40:47,515 INFO L76 edCorrectnessWitness]: Location invariant before [L69-L69] N <= 4294967293U [2024-02-07 14:40:47,516 INFO L76 edCorrectnessWitness]: Location invariant before [L48-L48] (1U <= N) && (N != 0U) [2024-02-07 14:40:47,516 INFO L76 edCorrectnessWitness]: Location invariant before [L50-L50] N <= 4294967294U [2024-02-07 14:40:47,516 INFO L76 edCorrectnessWitness]: Location invariant before [L67-L67] (2U <= N) && (N != 0U) [2024-02-07 14:40:47,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:40:47,703 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c[2630,2643] [2024-02-07 14:40:47,713 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:40:47,720 INFO L203 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:40:47,766 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c[2630,2643] [2024-02-07 14:40:47,767 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:40:47,791 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:40:47,791 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:40:47 WrapperNode [2024-02-07 14:40:47,791 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:40:47,792 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:40:47,792 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:40:47,793 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:40:47,799 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 07.02 02:40:47" (1/1) ... [2024-02-07 14:40:47,817 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 07.02 02:40:47" (1/1) ... [2024-02-07 14:40:47,841 INFO L138 Inliner]: procedures = 22, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2024-02-07 14:40:47,842 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:40:47,843 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:40:47,843 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:40:47,843 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:40:47,853 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:40:47" (1/1) ... [2024-02-07 14:40:47,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:40:47" (1/1) ... [2024-02-07 14:40:47,859 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:40:47" (1/1) ... [2024-02-07 14:40:47,885 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-02-07 14:40:47,885 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:40:47" (1/1) ... [2024-02-07 14:40:47,885 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:40:47" (1/1) ... [2024-02-07 14:40:47,890 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:40:47" (1/1) ... [2024-02-07 14:40:47,892 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:40:47" (1/1) ... [2024-02-07 14:40:47,900 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:40:47" (1/1) ... [2024-02-07 14:40:47,906 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:40:47" (1/1) ... [2024-02-07 14:40:47,908 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:40:47,909 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:40:47,909 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:40:47,909 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:40:47,910 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:40:47" (1/1) ... [2024-02-07 14:40:47,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:40:47,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:40:47,938 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) [2024-02-07 14:40:47,947 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 [2024-02-07 14:40:47,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:40:47,993 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-07 14:40:47,993 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-07 14:40:47,993 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-07 14:40:47,993 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-07 14:40:47,994 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-07 14:40:47,994 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-07 14:40:47,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:40:47,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:40:47,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:40:48,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:40:48,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:40:48,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:40:48,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:40:48,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:40:48,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:40:48,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-07 14:40:48,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-07 14:40:48,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:40:48,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:40:48,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 14:40:48,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 14:40:48,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 14:40:48,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 14:40:48,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:40:48,019 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 14:40:48,111 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:40:48,112 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:40:48,281 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:40:48,281 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:40:48,451 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:40:48,452 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-02-07 14:40:48,452 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:40:48 BoogieIcfgContainer [2024-02-07 14:40:48,452 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:40:48,454 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:40:48,454 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:40:48,457 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:40:48,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:40:47" (1/4) ... [2024-02-07 14:40:48,458 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c4c7ff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:40:48, skipping insertion in model container [2024-02-07 14:40:48,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:40:47" (2/4) ... [2024-02-07 14:40:48,458 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c4c7ff8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:40:48, skipping insertion in model container [2024-02-07 14:40:48,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:40:47" (3/4) ... [2024-02-07 14:40:48,459 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c4c7ff8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:40:48, skipping insertion in model container [2024-02-07 14:40:48,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:40:48" (4/4) ... [2024-02-07 14:40:48,460 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-equiv.wvr.c [2024-02-07 14:40:48,476 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:40:48,477 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-02-07 14:40:48,477 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:40:48,522 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-07 14:40:48,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 38 transitions, 97 flow [2024-02-07 14:40:48,584 INFO L124 PetriNetUnfolderBase]: 3/35 cut-off events. [2024-02-07 14:40:48,584 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-07 14:40:48,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 35 events. 3/35 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 64 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2024-02-07 14:40:48,587 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 38 transitions, 97 flow [2024-02-07 14:40:48,590 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 34 transitions, 86 flow [2024-02-07 14:40:48,599 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:40:48,605 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;@7042d402, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:40:48,605 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-02-07 14:40:48,611 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:40:48,611 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-02-07 14:40:48,611 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:40:48,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:40:48,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-07 14:40:48,613 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-02-07 14:40:48,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:40:48,617 INFO L85 PathProgramCache]: Analyzing trace with hash 461834371, now seen corresponding path program 1 times [2024-02-07 14:40:48,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:40:48,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129938795] [2024-02-07 14:40:48,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:40:48,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:40:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:40:48,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:40:48,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:40:48,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129938795] [2024-02-07 14:40:48,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129938795] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:40:48,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:40:48,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:40:48,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086405497] [2024-02-07 14:40:48,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:40:48,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-02-07 14:40:48,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:40:48,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-02-07 14:40:48,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-02-07 14:40:48,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-02-07 14:40:48,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 86 flow. Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 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) [2024-02-07 14:40:48,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:40:48,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-02-07 14:40:48,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:40:48,989 INFO L124 PetriNetUnfolderBase]: 164/300 cut-off events. [2024-02-07 14:40:48,989 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-02-07 14:40:48,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 600 conditions, 300 events. 164/300 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1465 event pairs, 117 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 435. Up to 257 conditions per place. [2024-02-07 14:40:48,998 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 19 selfloop transitions, 0 changer transitions 0/30 dead transitions. [2024-02-07 14:40:48,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 30 transitions, 116 flow [2024-02-07 14:40:49,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-02-07 14:40:49,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-02-07 14:40:49,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 51 transitions. [2024-02-07 14:40:49,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6710526315789473 [2024-02-07 14:40:49,011 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 86 flow. Second operand 2 states and 51 transitions. [2024-02-07 14:40:49,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 30 transitions, 116 flow [2024-02-07 14:40:49,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 104 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-07 14:40:49,016 INFO L231 Difference]: Finished difference. Result has 32 places, 30 transitions, 66 flow [2024-02-07 14:40:49,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=66, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2024-02-07 14:40:49,021 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -9 predicate places. [2024-02-07 14:40:49,022 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 66 flow [2024-02-07 14:40:49,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 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) [2024-02-07 14:40:49,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:40:49,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:40:49,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:40:49,023 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-02-07 14:40:49,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:40:49,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1883315761, now seen corresponding path program 1 times [2024-02-07 14:40:49,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:40:49,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614273840] [2024-02-07 14:40:49,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:40:49,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:40:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:40:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:40:49,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:40:49,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614273840] [2024-02-07 14:40:49,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614273840] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:40:49,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:40:49,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:40:49,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138746470] [2024-02-07 14:40:49,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:40:49,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:40:49,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:40:49,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:40:49,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:40:49,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-02-07 14:40:49,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-02-07 14:40:49,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:40:49,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-02-07 14:40:49,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:40:49,584 INFO L124 PetriNetUnfolderBase]: 359/616 cut-off events. [2024-02-07 14:40:49,585 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-02-07 14:40:49,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1135 conditions, 616 events. 359/616 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2827 event pairs, 39 based on Foata normal form. 1/596 useless extension candidates. Maximal degree in co-relation 1132. Up to 421 conditions per place. [2024-02-07 14:40:49,594 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 30 selfloop transitions, 4 changer transitions 1/46 dead transitions. [2024-02-07 14:40:49,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 46 transitions, 173 flow [2024-02-07 14:40:49,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:40:49,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:40:49,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-02-07 14:40:49,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6842105263157895 [2024-02-07 14:40:49,600 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 66 flow. Second operand 3 states and 78 transitions. [2024-02-07 14:40:49,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 46 transitions, 173 flow [2024-02-07 14:40:49,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 46 transitions, 173 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:40:49,609 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 92 flow [2024-02-07 14:40:49,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2024-02-07 14:40:49,610 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -6 predicate places. [2024-02-07 14:40:49,610 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 92 flow [2024-02-07 14:40:49,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-02-07 14:40:49,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:40:49,611 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] [2024-02-07 14:40:49,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 14:40:49,612 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-02-07 14:40:49,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:40:49,615 INFO L85 PathProgramCache]: Analyzing trace with hash -819628783, now seen corresponding path program 1 times [2024-02-07 14:40:49,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:40:49,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449010222] [2024-02-07 14:40:49,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:40:49,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:40:49,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:40:49,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:40:49,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:40:49,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449010222] [2024-02-07 14:40:49,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449010222] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:40:49,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:40:49,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:40:49,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997460443] [2024-02-07 14:40:49,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:40:49,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:40:49,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:40:49,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:40:49,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:40:50,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-02-07 14:40:50,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 92 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2024-02-07 14:40:50,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:40:50,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-02-07 14:40:50,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:40:50,278 INFO L124 PetriNetUnfolderBase]: 598/938 cut-off events. [2024-02-07 14:40:50,278 INFO L125 PetriNetUnfolderBase]: For 203/222 co-relation queries the response was YES. [2024-02-07 14:40:50,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2148 conditions, 938 events. 598/938 cut-off events. For 203/222 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4344 event pairs, 37 based on Foata normal form. 0/841 useless extension candidates. Maximal degree in co-relation 2143. Up to 478 conditions per place. [2024-02-07 14:40:50,284 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 64 selfloop transitions, 18 changer transitions 0/90 dead transitions. [2024-02-07 14:40:50,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 90 transitions, 412 flow [2024-02-07 14:40:50,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-07 14:40:50,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-07 14:40:50,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-02-07 14:40:50,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.555921052631579 [2024-02-07 14:40:50,286 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 92 flow. Second operand 8 states and 169 transitions. [2024-02-07 14:40:50,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 90 transitions, 412 flow [2024-02-07 14:40:50,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 90 transitions, 401 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:40:50,289 INFO L231 Difference]: Finished difference. Result has 46 places, 48 transitions, 209 flow [2024-02-07 14:40:50,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=209, PETRI_PLACES=46, PETRI_TRANSITIONS=48} [2024-02-07 14:40:50,290 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2024-02-07 14:40:50,290 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 48 transitions, 209 flow [2024-02-07 14:40:50,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2024-02-07 14:40:50,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:40:50,291 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] [2024-02-07 14:40:50,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 14:40:50,291 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-02-07 14:40:50,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:40:50,292 INFO L85 PathProgramCache]: Analyzing trace with hash 723062973, now seen corresponding path program 2 times [2024-02-07 14:40:50,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:40:50,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80423374] [2024-02-07 14:40:50,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:40:50,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:40:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:40:50,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:40:50,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:40:50,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80423374] [2024-02-07 14:40:50,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80423374] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:40:50,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:40:50,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:40:50,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717924716] [2024-02-07 14:40:50,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:40:50,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:40:50,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:40:50,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:40:50,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:40:50,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-02-07 14:40:50,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 48 transitions, 209 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2024-02-07 14:40:50,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:40:50,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-02-07 14:40:50,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:40:50,705 INFO L124 PetriNetUnfolderBase]: 818/1295 cut-off events. [2024-02-07 14:40:50,705 INFO L125 PetriNetUnfolderBase]: For 934/963 co-relation queries the response was YES. [2024-02-07 14:40:50,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3552 conditions, 1295 events. 818/1295 cut-off events. For 934/963 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6470 event pairs, 125 based on Foata normal form. 31/1284 useless extension candidates. Maximal degree in co-relation 3542. Up to 725 conditions per place. [2024-02-07 14:40:50,714 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 67 selfloop transitions, 22 changer transitions 3/100 dead transitions. [2024-02-07 14:40:50,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 100 transitions, 597 flow [2024-02-07 14:40:50,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:40:50,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:40:50,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-02-07 14:40:50,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6008771929824561 [2024-02-07 14:40:50,716 INFO L175 Difference]: Start difference. First operand has 46 places, 48 transitions, 209 flow. Second operand 6 states and 137 transitions. [2024-02-07 14:40:50,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 100 transitions, 597 flow [2024-02-07 14:40:50,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 100 transitions, 597 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:40:50,721 INFO L231 Difference]: Finished difference. Result has 55 places, 62 transitions, 379 flow [2024-02-07 14:40:50,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=379, PETRI_PLACES=55, PETRI_TRANSITIONS=62} [2024-02-07 14:40:50,722 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2024-02-07 14:40:50,722 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 62 transitions, 379 flow [2024-02-07 14:40:50,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2024-02-07 14:40:50,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:40:50,723 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] [2024-02-07 14:40:50,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 14:40:50,723 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-02-07 14:40:50,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:40:50,724 INFO L85 PathProgramCache]: Analyzing trace with hash -438736095, now seen corresponding path program 3 times [2024-02-07 14:40:50,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:40:50,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919364456] [2024-02-07 14:40:50,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:40:50,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:40:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:40:50,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:40:50,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:40:50,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919364456] [2024-02-07 14:40:50,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919364456] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:40:50,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:40:50,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:40:50,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804873074] [2024-02-07 14:40:50,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:40:50,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:40:50,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:40:50,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:40:50,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:40:50,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-02-07 14:40:50,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 62 transitions, 379 flow. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:40:50,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:40:50,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-02-07 14:40:50,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:40:51,333 INFO L124 PetriNetUnfolderBase]: 1445/2163 cut-off events. [2024-02-07 14:40:51,333 INFO L125 PetriNetUnfolderBase]: For 3815/3892 co-relation queries the response was YES. [2024-02-07 14:40:51,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7231 conditions, 2163 events. 1445/2163 cut-off events. For 3815/3892 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 11054 event pairs, 245 based on Foata normal form. 33/2163 useless extension candidates. Maximal degree in co-relation 7216. Up to 1040 conditions per place. [2024-02-07 14:40:51,349 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 94 selfloop transitions, 33 changer transitions 3/137 dead transitions. [2024-02-07 14:40:51,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 137 transitions, 931 flow [2024-02-07 14:40:51,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:40:51,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:40:51,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-02-07 14:40:51,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6466165413533834 [2024-02-07 14:40:51,351 INFO L175 Difference]: Start difference. First operand has 55 places, 62 transitions, 379 flow. Second operand 7 states and 172 transitions. [2024-02-07 14:40:51,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 137 transitions, 931 flow [2024-02-07 14:40:51,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 137 transitions, 883 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-02-07 14:40:51,360 INFO L231 Difference]: Finished difference. Result has 63 places, 74 transitions, 552 flow [2024-02-07 14:40:51,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=552, PETRI_PLACES=63, PETRI_TRANSITIONS=74} [2024-02-07 14:40:51,361 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 22 predicate places. [2024-02-07 14:40:51,361 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 74 transitions, 552 flow [2024-02-07 14:40:51,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:40:51,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:40:51,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:40:51,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 14:40:51,362 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-02-07 14:40:51,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:40:51,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1644663365, now seen corresponding path program 1 times [2024-02-07 14:40:51,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:40:51,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455659253] [2024-02-07 14:40:51,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:40:51,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:40:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:40:51,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:40:51,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:40:51,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455659253] [2024-02-07 14:40:51,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455659253] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:40:51,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:40:51,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:40:51,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873492729] [2024-02-07 14:40:51,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:40:51,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:40:51,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:40:51,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:40:51,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:40:51,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-02-07 14:40:51,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 74 transitions, 552 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2024-02-07 14:40:51,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:40:51,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-02-07 14:40:51,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:40:51,974 INFO L124 PetriNetUnfolderBase]: 2102/3273 cut-off events. [2024-02-07 14:40:51,974 INFO L125 PetriNetUnfolderBase]: For 7449/7595 co-relation queries the response was YES. [2024-02-07 14:40:51,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11523 conditions, 3273 events. 2102/3273 cut-off events. For 7449/7595 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 18441 event pairs, 672 based on Foata normal form. 6/3033 useless extension candidates. Maximal degree in co-relation 11504. Up to 1830 conditions per place. [2024-02-07 14:40:51,998 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 74 selfloop transitions, 35 changer transitions 0/119 dead transitions. [2024-02-07 14:40:51,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 119 transitions, 925 flow [2024-02-07 14:40:51,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:40:51,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:40:52,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-02-07 14:40:52,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-02-07 14:40:52,000 INFO L175 Difference]: Start difference. First operand has 63 places, 74 transitions, 552 flow. Second operand 5 states and 114 transitions. [2024-02-07 14:40:52,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 119 transitions, 925 flow [2024-02-07 14:40:52,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 119 transitions, 915 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-02-07 14:40:52,026 INFO L231 Difference]: Finished difference. Result has 69 places, 79 transitions, 698 flow [2024-02-07 14:40:52,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=698, PETRI_PLACES=69, PETRI_TRANSITIONS=79} [2024-02-07 14:40:52,029 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 28 predicate places. [2024-02-07 14:40:52,030 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 79 transitions, 698 flow [2024-02-07 14:40:52,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2024-02-07 14:40:52,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:40:52,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:40:52,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 14:40:52,031 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-02-07 14:40:52,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:40:52,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1317371809, now seen corresponding path program 1 times [2024-02-07 14:40:52,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:40:52,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693017495] [2024-02-07 14:40:52,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:40:52,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:40:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:40:52,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:40:52,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:40:52,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693017495] [2024-02-07 14:40:52,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693017495] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:40:52,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:40:52,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:40:52,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592466153] [2024-02-07 14:40:52,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:40:52,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:40:52,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:40:52,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:40:52,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:40:52,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-02-07 14:40:52,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 79 transitions, 698 flow. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:40:52,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:40:52,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-02-07 14:40:52,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:40:52,776 INFO L124 PetriNetUnfolderBase]: 1950/3036 cut-off events. [2024-02-07 14:40:52,776 INFO L125 PetriNetUnfolderBase]: For 11044/11204 co-relation queries the response was YES. [2024-02-07 14:40:52,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12420 conditions, 3036 events. 1950/3036 cut-off events. For 11044/11204 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 17275 event pairs, 321 based on Foata normal form. 83/3048 useless extension candidates. Maximal degree in co-relation 12397. Up to 1467 conditions per place. [2024-02-07 14:40:52,799 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 98 selfloop transitions, 29 changer transitions 3/139 dead transitions. [2024-02-07 14:40:52,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 139 transitions, 1305 flow [2024-02-07 14:40:52,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:40:52,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:40:52,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-02-07 14:40:52,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2024-02-07 14:40:52,801 INFO L175 Difference]: Start difference. First operand has 69 places, 79 transitions, 698 flow. Second operand 7 states and 154 transitions. [2024-02-07 14:40:52,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 139 transitions, 1305 flow [2024-02-07 14:40:52,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 139 transitions, 1233 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-02-07 14:40:52,827 INFO L231 Difference]: Finished difference. Result has 79 places, 82 transitions, 800 flow [2024-02-07 14:40:52,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=800, PETRI_PLACES=79, PETRI_TRANSITIONS=82} [2024-02-07 14:40:52,828 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 38 predicate places. [2024-02-07 14:40:52,828 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 82 transitions, 800 flow [2024-02-07 14:40:52,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:40:52,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:40:52,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:40:52,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 14:40:52,829 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-02-07 14:40:52,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:40:52,830 INFO L85 PathProgramCache]: Analyzing trace with hash -428156591, now seen corresponding path program 2 times [2024-02-07 14:40:52,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:40:52,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803710513] [2024-02-07 14:40:52,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:40:52,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:40:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:40:53,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:40:53,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:40:53,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803710513] [2024-02-07 14:40:53,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803710513] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:40:53,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:40:53,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:40:53,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364312181] [2024-02-07 14:40:53,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:40:53,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:40:53,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:40:53,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:40:53,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:40:53,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-02-07 14:40:53,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 82 transitions, 800 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2024-02-07 14:40:53,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:40:53,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-02-07 14:40:53,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:40:53,710 INFO L124 PetriNetUnfolderBase]: 2469/3898 cut-off events. [2024-02-07 14:40:53,710 INFO L125 PetriNetUnfolderBase]: For 14075/14446 co-relation queries the response was YES. [2024-02-07 14:40:53,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16231 conditions, 3898 events. 2469/3898 cut-off events. For 14075/14446 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 22379 event pairs, 591 based on Foata normal form. 41/3904 useless extension candidates. Maximal degree in co-relation 16204. Up to 3120 conditions per place. [2024-02-07 14:40:53,740 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 94 selfloop transitions, 44 changer transitions 7/156 dead transitions. [2024-02-07 14:40:53,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 156 transitions, 1608 flow [2024-02-07 14:40:53,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:40:53,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:40:53,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-02-07 14:40:53,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575187969924812 [2024-02-07 14:40:53,742 INFO L175 Difference]: Start difference. First operand has 79 places, 82 transitions, 800 flow. Second operand 7 states and 153 transitions. [2024-02-07 14:40:53,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 156 transitions, 1608 flow [2024-02-07 14:40:53,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 156 transitions, 1600 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-02-07 14:40:53,771 INFO L231 Difference]: Finished difference. Result has 89 places, 104 transitions, 1262 flow [2024-02-07 14:40:53,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1262, PETRI_PLACES=89, PETRI_TRANSITIONS=104} [2024-02-07 14:40:53,772 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 48 predicate places. [2024-02-07 14:40:53,772 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 104 transitions, 1262 flow [2024-02-07 14:40:53,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2024-02-07 14:40:53,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:40:53,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:40:53,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 14:40:53,773 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-02-07 14:40:53,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:40:53,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1120044869, now seen corresponding path program 2 times [2024-02-07 14:40:53,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:40:53,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948565702] [2024-02-07 14:40:53,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:40:53,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:40:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:40:54,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:40:54,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:40:54,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948565702] [2024-02-07 14:40:54,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948565702] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:40:54,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:40:54,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:40:54,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960750912] [2024-02-07 14:40:54,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:40:54,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:40:54,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:40:54,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:40:54,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:40:54,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-02-07 14:40:54,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 104 transitions, 1262 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2024-02-07 14:40:54,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:40:54,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-02-07 14:40:54,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:40:54,468 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([300] L80-->L83: Formula: (and (= (+ v_~L~0_14 1) v_~L~0_15) (= (+ v_~q~0_14 v_~M~0_14) v_~q~0_13)) InVars {~q~0=v_~q~0_14, ~M~0=v_~M~0_14, ~L~0=v_~L~0_15} OutVars{~q~0=v_~q~0_13, ~M~0=v_~M~0_14, thread3Thread1of1ForFork1_#t~post2=|v_thread3Thread1of1ForFork1_#t~post2_1|, ~L~0=v_~L~0_14} AuxVars[] AssignedVars[~L~0, ~q~0, thread3Thread1of1ForFork1_#t~post2][82], [Black: 57#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), Black: 65#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (<= ~L~0 (* 4294967296 (div ~L~0 4294967296))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), Black: 61#(and (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 63#(and (<= ~L~0 (* 4294967296 (div ~L~0 4294967296))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), 2#L83true, Black: 130#(and (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 56#(or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0)), Black: 132#(and (= ~N~0 ~L~0) (= thread2Thread1of1ForFork0_~cond~1 0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 127#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0))) (= ~N~0 ~L~0)), 137#true, Black: 126#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (= ~N~0 ~L~0)), 54#true, 87#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 75#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 74#(< (* (div ~N~0 4294967296) 4294967296) ~N~0), Black: 77#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 73#(or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0)), 15#L50true, 7#L72true, Black: 85#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), 48#true, Black: 86#(and (or (< ~L~0 (+ (* 4294967296 (div ~L~0 4294967296)) 1)) (< 0 thread1Thread1of1ForFork2_~cond~0)) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 89#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1)), Black: 96#(or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))), 6#L100-1true, Black: 100#(and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), 108#true, Black: 103#(and (= thread2Thread1of1ForFork0_~cond~1 0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 52#(and (= ~p~0 0) (= ~q~0 0)), Black: 115#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (= ~N~0 ~L~0)), Black: 113#(not (= ~L~0 (* 4294967296 (div ~L~0 4294967296)))), Black: 110#(= ~N~0 ~L~0), Black: 117#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 1)), 123#true]) [2024-02-07 14:40:54,468 INFO L294 olderBase$Statistics]: this new event has 19 ancestors and is cut-off event [2024-02-07 14:40:54,469 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-07 14:40:54,469 INFO L297 olderBase$Statistics]: existing Event has 16 ancestors and is cut-off event [2024-02-07 14:40:54,469 INFO L297 olderBase$Statistics]: existing Event has 16 ancestors and is cut-off event [2024-02-07 14:40:54,563 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([300] L80-->L83: Formula: (and (= (+ v_~L~0_14 1) v_~L~0_15) (= (+ v_~q~0_14 v_~M~0_14) v_~q~0_13)) InVars {~q~0=v_~q~0_14, ~M~0=v_~M~0_14, ~L~0=v_~L~0_15} OutVars{~q~0=v_~q~0_13, ~M~0=v_~M~0_14, thread3Thread1of1ForFork1_#t~post2=|v_thread3Thread1of1ForFork1_#t~post2_1|, ~L~0=v_~L~0_14} AuxVars[] AssignedVars[~L~0, ~q~0, thread3Thread1of1ForFork1_#t~post2][82], [Black: 57#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), Black: 65#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (<= ~L~0 (* 4294967296 (div ~L~0 4294967296))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), Black: 61#(and (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 63#(and (<= ~L~0 (* 4294967296 (div ~L~0 4294967296))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), Black: 130#(and (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), 2#L83true, Black: 56#(or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0)), Black: 132#(and (= ~N~0 ~L~0) (= thread2Thread1of1ForFork0_~cond~1 0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 127#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0))) (= ~N~0 ~L~0)), 137#true, Black: 126#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (= ~N~0 ~L~0)), 54#true, 87#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 75#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 74#(< (* (div ~N~0 4294967296) 4294967296) ~N~0), Black: 77#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 73#(or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0)), 15#L50true, 21#thread2EXITtrue, Black: 85#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), 48#true, Black: 86#(and (or (< ~L~0 (+ (* 4294967296 (div ~L~0 4294967296)) 1)) (< 0 thread1Thread1of1ForFork2_~cond~0)) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 89#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1)), Black: 96#(or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))), 6#L100-1true, Black: 100#(and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), 108#true, Black: 103#(and (= thread2Thread1of1ForFork0_~cond~1 0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 52#(and (= ~p~0 0) (= ~q~0 0)), Black: 115#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (= ~N~0 ~L~0)), Black: 113#(not (= ~L~0 (* 4294967296 (div ~L~0 4294967296)))), Black: 110#(= ~N~0 ~L~0), Black: 117#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 1)), 123#true]) [2024-02-07 14:40:54,563 INFO L294 olderBase$Statistics]: this new event has 20 ancestors and is cut-off event [2024-02-07 14:40:54,564 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-07 14:40:54,564 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-07 14:40:54,564 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-07 14:40:54,568 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([300] L80-->L83: Formula: (and (= (+ v_~L~0_14 1) v_~L~0_15) (= (+ v_~q~0_14 v_~M~0_14) v_~q~0_13)) InVars {~q~0=v_~q~0_14, ~M~0=v_~M~0_14, ~L~0=v_~L~0_15} OutVars{~q~0=v_~q~0_13, ~M~0=v_~M~0_14, thread3Thread1of1ForFork1_#t~post2=|v_thread3Thread1of1ForFork1_#t~post2_1|, ~L~0=v_~L~0_14} AuxVars[] AssignedVars[~L~0, ~q~0, thread3Thread1of1ForFork1_#t~post2][82], [Black: 57#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), Black: 65#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (<= ~L~0 (* 4294967296 (div ~L~0 4294967296))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), Black: 61#(and (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 63#(and (<= ~L~0 (* 4294967296 (div ~L~0 4294967296))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), Black: 130#(and (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), 2#L83true, Black: 56#(or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0)), Black: 132#(and (= ~N~0 ~L~0) (= thread2Thread1of1ForFork0_~cond~1 0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 127#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 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thread1Thread1of1ForFork2_~cond~0 1))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), 48#true, Black: 86#(and (or (< ~L~0 (+ (* 4294967296 (div ~L~0 4294967296)) 1)) (< 0 thread1Thread1of1ForFork2_~cond~0)) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 89#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1)), 16#L64true, Black: 96#(or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))), 6#L100-1true, Black: 100#(and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 103#(and (= thread2Thread1of1ForFork0_~cond~1 0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), 108#true, Black: 52#(and (= ~p~0 0) (= ~q~0 0)), Black: 115#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (= ~N~0 ~L~0)), Black: 113#(not (= ~L~0 (* 4294967296 (div ~L~0 4294967296)))), Black: 110#(= ~N~0 ~L~0), Black: 117#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 1)), 123#true]) [2024-02-07 14:40:54,568 INFO L294 olderBase$Statistics]: this new event has 20 ancestors and is cut-off event [2024-02-07 14:40:54,568 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-07 14:40:54,568 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-07 14:40:54,569 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-07 14:40:54,706 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([300] L80-->L83: Formula: (and (= (+ v_~L~0_14 1) v_~L~0_15) (= (+ v_~q~0_14 v_~M~0_14) v_~q~0_13)) InVars {~q~0=v_~q~0_14, ~M~0=v_~M~0_14, ~L~0=v_~L~0_15} OutVars{~q~0=v_~q~0_13, ~M~0=v_~M~0_14, thread3Thread1of1ForFork1_#t~post2=|v_thread3Thread1of1ForFork1_#t~post2_1|, ~L~0=v_~L~0_14} AuxVars[] AssignedVars[~L~0, ~q~0, thread3Thread1of1ForFork1_#t~post2][82], [Black: 57#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), Black: 65#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (<= ~L~0 (* 4294967296 (div ~L~0 4294967296))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), 18#L99-4true, Black: 61#(and (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), 2#L83true, Black: 63#(and (<= ~L~0 (* 4294967296 (div ~L~0 4294967296))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), Black: 130#(and (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 132#(and (= ~N~0 ~L~0) (= thread2Thread1of1ForFork0_~cond~1 0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 56#(or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0)), Black: 127#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0))) (= ~N~0 ~L~0)), 137#true, Black: 126#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (= ~N~0 ~L~0)), 54#true, Black: 75#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 74#(< (* (div ~N~0 4294967296) 4294967296) ~N~0), Black: 77#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 73#(or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0)), Black: 85#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), Black: 86#(and (or (< ~L~0 (+ (* 4294967296 (div ~L~0 4294967296)) 1)) (< 0 thread1Thread1of1ForFork2_~cond~0)) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), 48#true, Black: 87#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), 82#true, Black: 89#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1)), 14#thread1EXITtrue, Black: 96#(or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))), 100#(and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), 108#true, Black: 103#(and (= thread2Thread1of1ForFork0_~cond~1 0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), 4#L69true, Black: 52#(and (= ~p~0 0) (= ~q~0 0)), Black: 115#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (= ~N~0 ~L~0)), Black: 113#(not (= ~L~0 (* 4294967296 (div ~L~0 4294967296)))), Black: 110#(= ~N~0 ~L~0), 123#true, Black: 117#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 1))]) [2024-02-07 14:40:54,706 INFO L294 olderBase$Statistics]: this new event has 19 ancestors and is cut-off event [2024-02-07 14:40:54,706 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-07 14:40:54,706 INFO L297 olderBase$Statistics]: existing Event has 16 ancestors and is cut-off event [2024-02-07 14:40:54,707 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-07 14:40:54,717 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([300] L80-->L83: Formula: (and (= (+ v_~L~0_14 1) v_~L~0_15) (= (+ v_~q~0_14 v_~M~0_14) v_~q~0_13)) InVars {~q~0=v_~q~0_14, ~M~0=v_~M~0_14, ~L~0=v_~L~0_15} OutVars{~q~0=v_~q~0_13, ~M~0=v_~M~0_14, thread3Thread1of1ForFork1_#t~post2=|v_thread3Thread1of1ForFork1_#t~post2_1|, ~L~0=v_~L~0_14} AuxVars[] AssignedVars[~L~0, ~q~0, thread3Thread1of1ForFork1_#t~post2][112], [139#(or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0))), Black: 57#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), Black: 65#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (<= ~L~0 (* 4294967296 (div ~L~0 4294967296))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), Black: 61#(and (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 63#(and (<= ~L~0 (* 4294967296 (div ~L~0 4294967296))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), 2#L83true, Black: 130#(and (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 56#(or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0)), Black: 132#(and (= ~N~0 ~L~0) (= thread2Thread1of1ForFork0_~cond~1 0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 127#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0))) (= ~N~0 ~L~0)), Black: 126#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (= ~N~0 ~L~0)), 87#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), 54#true, Black: 75#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 74#(< (* (div ~N~0 4294967296) 4294967296) ~N~0), Black: 77#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 73#(or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0)), 21#thread2EXITtrue, Black: 85#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), 48#true, Black: 86#(and (or (< ~L~0 (+ (* 4294967296 (div ~L~0 4294967296)) 1)) (< 0 thread1Thread1of1ForFork2_~cond~0)) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 89#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1)), Black: 96#(or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))), 6#L100-1true, Black: 100#(and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), 108#true, Black: 103#(and (= thread2Thread1of1ForFork0_~cond~1 0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), 5#L45true, Black: 52#(and (= ~p~0 0) (= ~q~0 0)), Black: 115#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (= ~N~0 ~L~0)), Black: 113#(not (= ~L~0 (* 4294967296 (div ~L~0 4294967296)))), Black: 110#(= ~N~0 ~L~0), 123#true, Black: 117#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 1))]) [2024-02-07 14:40:54,718 INFO L294 olderBase$Statistics]: this new event has 21 ancestors and is cut-off event [2024-02-07 14:40:54,718 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-07 14:40:54,718 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-07 14:40:54,718 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-07 14:40:54,721 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([300] L80-->L83: Formula: (and (= (+ v_~L~0_14 1) v_~L~0_15) (= (+ v_~q~0_14 v_~M~0_14) v_~q~0_13)) InVars {~q~0=v_~q~0_14, ~M~0=v_~M~0_14, ~L~0=v_~L~0_15} OutVars{~q~0=v_~q~0_13, ~M~0=v_~M~0_14, thread3Thread1of1ForFork1_#t~post2=|v_thread3Thread1of1ForFork1_#t~post2_1|, ~L~0=v_~L~0_14} AuxVars[] AssignedVars[~L~0, ~q~0, thread3Thread1of1ForFork1_#t~post2][112], [139#(or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0))), Black: 57#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), Black: 65#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (<= ~L~0 (* 4294967296 (div ~L~0 4294967296))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), Black: 61#(and (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 63#(and (<= ~L~0 (* 4294967296 (div ~L~0 4294967296))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), Black: 130#(and (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), 2#L83true, Black: 56#(or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0)), Black: 132#(and (= ~N~0 ~L~0) (= thread2Thread1of1ForFork0_~cond~1 0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 127#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0))) (= ~N~0 ~L~0)), Black: 126#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (= ~N~0 ~L~0)), 87#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), 54#true, Black: 75#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 74#(< (* (div ~N~0 4294967296) 4294967296) ~N~0), Black: 77#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 73#(or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0)), Black: 85#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), 48#true, Black: 86#(and (or (< ~L~0 (+ (* 4294967296 (div ~L~0 4294967296)) 1)) (< 0 thread1Thread1of1ForFork2_~cond~0)) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 89#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1)), 16#L64true, Black: 96#(or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))), 6#L100-1true, Black: 100#(and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 103#(and (= thread2Thread1of1ForFork0_~cond~1 0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), 108#true, 5#L45true, Black: 52#(and (= ~p~0 0) (= ~q~0 0)), Black: 115#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (= ~N~0 ~L~0)), Black: 113#(not (= ~L~0 (* 4294967296 (div ~L~0 4294967296)))), Black: 110#(= ~N~0 ~L~0), 123#true, Black: 117#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 1))]) [2024-02-07 14:40:54,721 INFO L294 olderBase$Statistics]: this new event has 21 ancestors and is cut-off event [2024-02-07 14:40:54,721 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-07 14:40:54,721 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-07 14:40:54,721 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-07 14:40:54,937 INFO L124 PetriNetUnfolderBase]: 3912/6213 cut-off events. [2024-02-07 14:40:54,938 INFO L125 PetriNetUnfolderBase]: For 28722/29536 co-relation queries the response was YES. [2024-02-07 14:40:54,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27596 conditions, 6213 events. 3912/6213 cut-off events. For 28722/29536 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 40352 event pairs, 644 based on Foata normal form. 72/6120 useless extension candidates. Maximal degree in co-relation 27564. Up to 2413 conditions per place. [2024-02-07 14:40:54,993 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 100 selfloop transitions, 69 changer transitions 3/185 dead transitions. [2024-02-07 14:40:54,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 185 transitions, 2336 flow [2024-02-07 14:40:54,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:40:54,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:40:54,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-02-07 14:40:54,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5894736842105263 [2024-02-07 14:40:54,995 INFO L175 Difference]: Start difference. First operand has 89 places, 104 transitions, 1262 flow. Second operand 5 states and 112 transitions. [2024-02-07 14:40:54,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 185 transitions, 2336 flow [2024-02-07 14:40:55,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 185 transitions, 2284 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-02-07 14:40:55,105 INFO L231 Difference]: Finished difference. Result has 95 places, 139 transitions, 1999 flow [2024-02-07 14:40:55,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1221, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1999, PETRI_PLACES=95, PETRI_TRANSITIONS=139} [2024-02-07 14:40:55,106 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 54 predicate places. [2024-02-07 14:40:55,106 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 139 transitions, 1999 flow [2024-02-07 14:40:55,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2024-02-07 14:40:55,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:40:55,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:40:55,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 14:40:55,107 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-02-07 14:40:55,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:40:55,108 INFO L85 PathProgramCache]: Analyzing trace with hash 57936441, now seen corresponding path program 3 times [2024-02-07 14:40:55,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:40:55,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252438539] [2024-02-07 14:40:55,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:40:55,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:40:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:40:55,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:40:55,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:40:55,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252438539] [2024-02-07 14:40:55,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252438539] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:40:55,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:40:55,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:40:55,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011162676] [2024-02-07 14:40:55,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:40:55,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:40:55,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:40:55,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:40:55,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:40:55,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-02-07 14:40:55,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 139 transitions, 1999 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2024-02-07 14:40:55,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:40:55,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-02-07 14:40:55,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:40:56,412 INFO L124 PetriNetUnfolderBase]: 4586/7085 cut-off events. [2024-02-07 14:40:56,412 INFO L125 PetriNetUnfolderBase]: For 44387/45161 co-relation queries the response was YES. [2024-02-07 14:40:56,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34839 conditions, 7085 events. 4586/7085 cut-off events. For 44387/45161 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 43826 event pairs, 1242 based on Foata normal form. 52/7084 useless extension candidates. Maximal degree in co-relation 34804. Up to 3793 conditions per place. [2024-02-07 14:40:56,469 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 107 selfloop transitions, 96 changer transitions 1/214 dead transitions. [2024-02-07 14:40:56,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 214 transitions, 2917 flow [2024-02-07 14:40:56,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:40:56,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:40:56,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-02-07 14:40:56,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5877192982456141 [2024-02-07 14:40:56,472 INFO L175 Difference]: Start difference. First operand has 95 places, 139 transitions, 1999 flow. Second operand 6 states and 134 transitions. [2024-02-07 14:40:56,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 214 transitions, 2917 flow [2024-02-07 14:40:56,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 214 transitions, 2913 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-02-07 14:40:56,571 INFO L231 Difference]: Finished difference. Result has 103 places, 159 transitions, 2532 flow [2024-02-07 14:40:56,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1995, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2532, PETRI_PLACES=103, PETRI_TRANSITIONS=159} [2024-02-07 14:40:56,573 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 62 predicate places. [2024-02-07 14:40:56,573 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 159 transitions, 2532 flow [2024-02-07 14:40:56,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2024-02-07 14:40:56,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:40:56,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:40:56,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-07 14:40:56,574 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-02-07 14:40:56,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:40:56,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1519488807, now seen corresponding path program 4 times [2024-02-07 14:40:56,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:40:56,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434509167] [2024-02-07 14:40:56,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:40:56,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:40:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:40:56,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:40:56,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:40:56,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434509167] [2024-02-07 14:40:56,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434509167] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:40:56,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:40:56,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:40:56,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64806220] [2024-02-07 14:40:56,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:40:56,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:40:56,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:40:56,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:40:56,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:40:56,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-02-07 14:40:56,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 159 transitions, 2532 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2024-02-07 14:40:56,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:40:56,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-02-07 14:40:56,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:40:57,882 INFO L124 PetriNetUnfolderBase]: 4015/6421 cut-off events. [2024-02-07 14:40:57,883 INFO L125 PetriNetUnfolderBase]: For 55402/56122 co-relation queries the response was YES. [2024-02-07 14:40:57,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35181 conditions, 6421 events. 4015/6421 cut-off events. For 55402/56122 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 41225 event pairs, 1128 based on Foata normal form. 66/6406 useless extension candidates. Maximal degree in co-relation 35142. Up to 3527 conditions per place. [2024-02-07 14:40:57,951 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 89 selfloop transitions, 88 changer transitions 5/201 dead transitions. [2024-02-07 14:40:57,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 201 transitions, 3050 flow [2024-02-07 14:40:57,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:40:57,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:40:57,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-02-07 14:40:57,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6210526315789474 [2024-02-07 14:40:57,953 INFO L175 Difference]: Start difference. First operand has 103 places, 159 transitions, 2532 flow. Second operand 5 states and 118 transitions. [2024-02-07 14:40:57,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 201 transitions, 3050 flow [2024-02-07 14:40:58,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 201 transitions, 3022 flow, removed 14 selfloop flow, removed 0 redundant places. [2024-02-07 14:40:58,149 INFO L231 Difference]: Finished difference. Result has 109 places, 155 transitions, 2642 flow [2024-02-07 14:40:58,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2467, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2642, PETRI_PLACES=109, PETRI_TRANSITIONS=155} [2024-02-07 14:40:58,150 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 68 predicate places. [2024-02-07 14:40:58,150 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 155 transitions, 2642 flow [2024-02-07 14:40:58,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2024-02-07 14:40:58,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:40:58,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:40:58,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-07 14:40:58,152 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-02-07 14:40:58,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:40:58,153 INFO L85 PathProgramCache]: Analyzing trace with hash -393427833, now seen corresponding path program 5 times [2024-02-07 14:40:58,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:40:58,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003972857] [2024-02-07 14:40:58,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:40:58,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:40:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:40:58,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:40:58,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:40:58,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003972857] [2024-02-07 14:40:58,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003972857] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:40:58,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964260970] [2024-02-07 14:40:58,397 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-07 14:40:58,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:40:58,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:40:58,399 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 14:40:58,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-07 14:40:58,503 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-07 14:40:58,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 14:40:58,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-07 14:40:58,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:40:58,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:40:58,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:40:59,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:40:59,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964260970] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:40:59,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:40:59,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 12 [2024-02-07 14:40:59,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138318646] [2024-02-07 14:40:59,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:40:59,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-02-07 14:40:59,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:40:59,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-02-07 14:40:59,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-02-07 14:40:59,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-02-07 14:40:59,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 155 transitions, 2642 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 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) [2024-02-07 14:40:59,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:40:59,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-02-07 14:40:59,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:41:02,698 INFO L124 PetriNetUnfolderBase]: 10090/15228 cut-off events. [2024-02-07 14:41:02,699 INFO L125 PetriNetUnfolderBase]: For 130946/130946 co-relation queries the response was YES. [2024-02-07 14:41:02,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83482 conditions, 15228 events. 10090/15228 cut-off events. For 130946/130946 co-relation queries the response was YES. Maximal size of possible extension queue 829. Compared 97626 event pairs, 557 based on Foata normal form. 221/15440 useless extension candidates. Maximal degree in co-relation 83440. Up to 3356 conditions per place. [2024-02-07 14:41:02,831 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 352 selfloop transitions, 278 changer transitions 37/671 dead transitions. [2024-02-07 14:41:02,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 671 transitions, 8432 flow [2024-02-07 14:41:02,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-02-07 14:41:02,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-02-07 14:41:02,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 730 transitions. [2024-02-07 14:41:02,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.533625730994152 [2024-02-07 14:41:02,835 INFO L175 Difference]: Start difference. First operand has 109 places, 155 transitions, 2642 flow. Second operand 36 states and 730 transitions. [2024-02-07 14:41:02,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 671 transitions, 8432 flow [2024-02-07 14:41:03,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 671 transitions, 8101 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-02-07 14:41:03,305 INFO L231 Difference]: Finished difference. Result has 159 places, 354 transitions, 6024 flow [2024-02-07 14:41:03,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2493, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=6024, PETRI_PLACES=159, PETRI_TRANSITIONS=354} [2024-02-07 14:41:03,306 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 118 predicate places. [2024-02-07 14:41:03,306 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 354 transitions, 6024 flow [2024-02-07 14:41:03,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 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) [2024-02-07 14:41:03,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:41:03,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:41:03,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-07 14:41:03,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-02-07 14:41:03,521 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-02-07 14:41:03,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:41:03,522 INFO L85 PathProgramCache]: Analyzing trace with hash -471788641, now seen corresponding path program 3 times [2024-02-07 14:41:03,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:41:03,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888549848] [2024-02-07 14:41:03,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:41:03,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:41:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:41:03,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:41:03,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:41:03,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888549848] [2024-02-07 14:41:03,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888549848] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:41:03,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:41:03,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:41:03,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471564412] [2024-02-07 14:41:03,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:41:03,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:41:03,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:41:03,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:41:03,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:41:03,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-02-07 14:41:03,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 354 transitions, 6024 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2024-02-07 14:41:03,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:41:03,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-02-07 14:41:03,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:41:04,714 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([287] L45-->L50: Formula: (and (let ((.cse0 (mod v_~N~0_106 4294967296))) (or (and (= v_~N~0_106 v_~N~0_105) (= |v_thread1Thread1of1ForFork2_#t~post1_6| |v_thread1Thread1of1ForFork2_#t~post1_5|) (= v_~p~0_85 v_~p~0_86) (<= .cse0 0)) (and (not (= 0 .cse0)) (= v_~p~0_85 (+ v_~p~0_86 v_~M~0_62)) (<= 1 .cse0) (= v_~N~0_106 (+ v_~N~0_105 1)) (< 0 .cse0)))) (<= (mod v_~N~0_105 4294967296) 4294967294)) InVars {~p~0=v_~p~0_86, ~N~0=v_~N~0_106, ~M~0=v_~M~0_62, thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_5|} OutVars{~p~0=v_~p~0_85, ~N~0=v_~N~0_105, ~M~0=v_~M~0_62, thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_6|} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_#t~post1, ~p~0, ~N~0][274], [Black: 368#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0))) (or (< 0 (mod ~L~0 4294967296)) (< (mod ~N~0 4294967296) 2)) (= ~p~0 0) (= ~q~0 0)), Black: 170#(or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))), Black: 378#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (< 0 (mod ~L~0 4294967296)) (< (mod ~N~0 4294967296) 2)) (= (mod ~q~0 4294967296) (mod ~p~0 4294967296))), 18#L99-4true, Black: 172#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1)), Black: 376#(and (or (< 0 (mod ~L~0 4294967296)) (< (mod ~N~0 4294967296) 2)) (<= 1 thread1Thread1of1ForFork2_~cond~0) (= (mod ~q~0 4294967296) (mod ~p~0 4294967296)) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 130#(and (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 366#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (< 0 (mod ~L~0 4294967296)) (< (mod ~N~0 4294967296) 2)) (= ~p~0 0) (= ~q~0 0)), Black: 132#(and (= ~N~0 ~L~0) (= thread2Thread1of1ForFork0_~cond~1 0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 127#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0))) (= ~N~0 ~L~0)), Black: 126#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (= ~N~0 ~L~0)), Black: 348#(and (or (< 0 (mod ~L~0 4294967296)) (< (mod ~N~0 4294967296) 2)) (<= 1 thread1Thread1of1ForFork2_~cond~0) (or (and (<= 2 (mod ~L~0 4294967296)) (= (mod ~p~0 2) 0)) (= ~p~0 0)) (= ~q~0 0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 331#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (or (< 0 (mod ~L~0 4294967296)) (and (= ~p~0 (+ (* 4294967296 (div ~p~0 4294967296)) (mod ~q~0 4294967296))) (<= (mod ~N~0 4294967296) 1))) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 364#(and (or (< 0 (mod ~L~0 4294967296)) (< (mod ~N~0 4294967296) 2)) (<= 1 thread1Thread1of1ForFork2_~cond~0) (= ~p~0 0) (= ~q~0 0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 171#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0)))), Black: 382#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= 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140#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0)))), Black: 358#(and (or (< 0 (mod ~L~0 4294967296)) (< (mod ~N~0 4294967296) 2)) (= ~p~0 0) (= ~q~0 0)), Black: 143#(and (= thread2Thread1of1ForFork0_~cond~1 0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), 15#L50true, 48#true, Black: 154#(and (or (and (= thread2Thread1of1ForFork0_~cond~1 0) (= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1))) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0))) (= thread1Thread1of1ForFork2_~cond~0 1)), Black: 151#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0)))), Black: 150#(or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))), Black: 161#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0)))), Black: 164#(and 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thread1Thread1of1ForFork2_~cond~0 1))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), Black: 86#(and (or (< ~L~0 (+ (* 4294967296 (div ~L~0 4294967296)) 1)) (< 0 thread1Thread1of1ForFork2_~cond~0)) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 89#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1)), Black: 96#(or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))), Black: 100#(and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 103#(and (= thread2Thread1of1ForFork0_~cond~1 0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), 34#L80true, Black: 115#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (= ~N~0 ~L~0)), Black: 110#(= ~N~0 ~L~0), Black: 117#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 1)), Black: 108#true, 402#true]) [2024-02-07 14:41:04,715 INFO L294 olderBase$Statistics]: this new event has 19 ancestors and is cut-off event [2024-02-07 14:41:04,715 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2024-02-07 14:41:04,715 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2024-02-07 14:41:04,715 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-07 14:41:04,871 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([287] L45-->L50: Formula: (and (let ((.cse0 (mod v_~N~0_106 4294967296))) (or (and (= v_~N~0_106 v_~N~0_105) (= |v_thread1Thread1of1ForFork2_#t~post1_6| |v_thread1Thread1of1ForFork2_#t~post1_5|) (= v_~p~0_85 v_~p~0_86) (<= .cse0 0)) (and (not (= 0 .cse0)) (= v_~p~0_85 (+ v_~p~0_86 v_~M~0_62)) (<= 1 .cse0) (= v_~N~0_106 (+ v_~N~0_105 1)) (< 0 .cse0)))) (<= (mod v_~N~0_105 4294967296) 4294967294)) InVars {~p~0=v_~p~0_86, ~N~0=v_~N~0_106, ~M~0=v_~M~0_62, thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_5|} OutVars{~p~0=v_~p~0_85, ~N~0=v_~N~0_105, ~M~0=v_~M~0_62, thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_6|} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_#t~post1, ~p~0, ~N~0][274], [Black: 368#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) 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Black: 150#(or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))), Black: 161#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0)))), Black: 164#(and (= thread2Thread1of1ForFork0_~cond~1 0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), 6#L100-1true, 148#true, 173#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 52#(and (= ~p~0 0) (= ~q~0 0)), 113#(not (= ~L~0 (* 4294967296 (div ~L~0 4294967296)))), Black: 57#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), Black: 65#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (<= ~L~0 (* 4294967296 (div ~L~0 4294967296))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), Black: 61#(and (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 63#(and (<= ~L~0 (* 4294967296 (div ~L~0 4294967296))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), Black: 56#(or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0)), 137#true, 87#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 75#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 74#(< (* (div ~N~0 4294967296) 4294967296) ~N~0), Black: 77#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 73#(or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0)), 7#L72true, Black: 85#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), Black: 86#(and (or (< ~L~0 (+ (* 4294967296 (div ~L~0 4294967296)) 1)) (< 0 thread1Thread1of1ForFork2_~cond~0)) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 89#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1)), Black: 96#(or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))), Black: 100#(and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 103#(and (= thread2Thread1of1ForFork0_~cond~1 0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), 34#L80true, Black: 115#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (= ~N~0 ~L~0)), Black: 110#(= ~N~0 ~L~0), Black: 117#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 1)), Black: 108#true, 402#true]) [2024-02-07 14:41:04,871 INFO L294 olderBase$Statistics]: this new event has 20 ancestors and is cut-off event [2024-02-07 14:41:04,871 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2024-02-07 14:41:04,871 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-02-07 14:41:04,872 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-02-07 14:41:05,441 INFO L124 PetriNetUnfolderBase]: 6684/10737 cut-off events. [2024-02-07 14:41:05,441 INFO L125 PetriNetUnfolderBase]: For 132911/134702 co-relation queries the response was YES. [2024-02-07 14:41:05,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66215 conditions, 10737 events. 6684/10737 cut-off events. For 132911/134702 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 74385 event pairs, 1237 based on Foata normal form. 331/10711 useless extension candidates. Maximal degree in co-relation 66157. Up to 8627 conditions per place. [2024-02-07 14:41:05,533 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 287 selfloop transitions, 37 changer transitions 9/399 dead transitions. [2024-02-07 14:41:05,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 399 transitions, 7051 flow [2024-02-07 14:41:05,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:41:05,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:41:05,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-02-07 14:41:05,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6105263157894737 [2024-02-07 14:41:05,534 INFO L175 Difference]: Start difference. First operand has 159 places, 354 transitions, 6024 flow. Second operand 5 states and 116 transitions. [2024-02-07 14:41:05,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 399 transitions, 7051 flow [2024-02-07 14:41:06,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 399 transitions, 6401 flow, removed 298 selfloop flow, removed 5 redundant places. [2024-02-07 14:41:06,103 INFO L231 Difference]: Finished difference. Result has 161 places, 351 transitions, 5419 flow [2024-02-07 14:41:06,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5271, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5419, PETRI_PLACES=161, PETRI_TRANSITIONS=351} [2024-02-07 14:41:06,104 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 120 predicate places. [2024-02-07 14:41:06,104 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 351 transitions, 5419 flow [2024-02-07 14:41:06,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2024-02-07 14:41:06,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:41:06,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:41:06,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-02-07 14:41:06,105 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-02-07 14:41:06,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:41:06,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1326736473, now seen corresponding path program 6 times [2024-02-07 14:41:06,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:41:06,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864966716] [2024-02-07 14:41:06,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:41:06,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:41:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:41:06,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:41:06,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:41:06,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864966716] [2024-02-07 14:41:06,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864966716] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:41:06,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:41:06,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:41:06,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501497713] [2024-02-07 14:41:06,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:41:06,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:41:06,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:41:06,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:41:06,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:41:06,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-02-07 14:41:06,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 351 transitions, 5419 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2024-02-07 14:41:06,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:41:06,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-02-07 14:41:06,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:41:07,869 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([287] L45-->L50: Formula: (and (let ((.cse0 (mod v_~N~0_106 4294967296))) (or (and (= v_~N~0_106 v_~N~0_105) (= |v_thread1Thread1of1ForFork2_#t~post1_6| |v_thread1Thread1of1ForFork2_#t~post1_5|) (= v_~p~0_85 v_~p~0_86) (<= .cse0 0)) (and (not (= 0 .cse0)) (= v_~p~0_85 (+ v_~p~0_86 v_~M~0_62)) (<= 1 .cse0) (= v_~N~0_106 (+ v_~N~0_105 1)) (< 0 .cse0)))) (<= (mod v_~N~0_105 4294967296) 4294967294)) InVars {~p~0=v_~p~0_86, ~N~0=v_~N~0_106, ~M~0=v_~M~0_62, thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_5|} OutVars{~p~0=v_~p~0_85, ~N~0=v_~N~0_105, ~M~0=v_~M~0_62, thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_6|} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_#t~post1, ~p~0, ~N~0][322], [Black: 368#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 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is cut-off event [2024-02-07 14:41:07,870 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2024-02-07 14:41:07,870 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-02-07 14:41:07,870 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([300] L80-->L83: Formula: (and (= (+ v_~L~0_14 1) v_~L~0_15) (= (+ v_~q~0_14 v_~M~0_14) v_~q~0_13)) InVars {~q~0=v_~q~0_14, ~M~0=v_~M~0_14, ~L~0=v_~L~0_15} OutVars{~q~0=v_~q~0_13, ~M~0=v_~M~0_14, thread3Thread1of1ForFork1_#t~post2=|v_thread3Thread1of1ForFork1_#t~post2_1|, ~L~0=v_~L~0_14} AuxVars[] AssignedVars[~L~0, ~q~0, thread3Thread1of1ForFork1_#t~post2][147], [Black: 368#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= 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existing Event has 20 ancestors and is cut-off event [2024-02-07 14:41:07,871 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-02-07 14:41:07,871 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-02-07 14:41:08,039 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([287] L45-->L50: Formula: (and (let ((.cse0 (mod v_~N~0_106 4294967296))) (or (and (= v_~N~0_106 v_~N~0_105) (= |v_thread1Thread1of1ForFork2_#t~post1_6| |v_thread1Thread1of1ForFork2_#t~post1_5|) (= v_~p~0_85 v_~p~0_86) (<= .cse0 0)) (and (not (= 0 .cse0)) (= v_~p~0_85 (+ v_~p~0_86 v_~M~0_62)) (<= 1 .cse0) (= v_~N~0_106 (+ v_~N~0_105 1)) (< 0 .cse0)))) (<= (mod v_~N~0_105 4294967296) 4294967294)) InVars {~p~0=v_~p~0_86, ~N~0=v_~N~0_106, ~M~0=v_~M~0_62, thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_5|} OutVars{~p~0=v_~p~0_85, ~N~0=v_~N~0_105, ~M~0=v_~M~0_62, 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~N~0) (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 1)), Black: 108#true, 402#true]) [2024-02-07 14:41:08,039 INFO L294 olderBase$Statistics]: this new event has 21 ancestors and is cut-off event [2024-02-07 14:41:08,039 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-02-07 14:41:08,040 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-02-07 14:41:08,040 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-02-07 14:41:08,040 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([300] L80-->L83: Formula: (and (= (+ v_~L~0_14 1) v_~L~0_15) (= (+ v_~q~0_14 v_~M~0_14) v_~q~0_13)) InVars {~q~0=v_~q~0_14, ~M~0=v_~M~0_14, ~L~0=v_~L~0_15} OutVars{~q~0=v_~q~0_13, ~M~0=v_~M~0_14, thread3Thread1of1ForFork1_#t~post2=|v_thread3Thread1of1ForFork1_#t~post2_1|, ~L~0=v_~L~0_14} AuxVars[] AssignedVars[~L~0, ~q~0, 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~L~0 4294967296)))), Black: 110#(= ~N~0 ~L~0), Black: 117#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 1)), 402#true]) [2024-02-07 14:41:08,040 INFO L294 olderBase$Statistics]: this new event has 21 ancestors and is cut-off event [2024-02-07 14:41:08,040 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-02-07 14:41:08,040 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-02-07 14:41:08,040 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-02-07 14:41:08,047 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([287] L45-->L50: Formula: (and (let ((.cse0 (mod v_~N~0_106 4294967296))) (or (and (= v_~N~0_106 v_~N~0_105) (= |v_thread1Thread1of1ForFork2_#t~post1_6| |v_thread1Thread1of1ForFork2_#t~post1_5|) (= v_~p~0_85 v_~p~0_86) (<= .cse0 0)) (and (not (= 0 .cse0)) 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414#true, Black: 115#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (= ~N~0 ~L~0)), Black: 110#(= ~N~0 ~L~0), Black: 117#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 1)), Black: 108#true, 402#true]) [2024-02-07 14:41:08,048 INFO L294 olderBase$Statistics]: this new event has 21 ancestors and is cut-off event [2024-02-07 14:41:08,048 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-02-07 14:41:08,048 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-02-07 14:41:08,048 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-02-07 14:41:08,048 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([300] L80-->L83: 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thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), Black: 86#(and (or (< ~L~0 (+ (* 4294967296 (div ~L~0 4294967296)) 1)) (< 0 thread1Thread1of1ForFork2_~cond~0)) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 89#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1)), Black: 96#(or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))), Black: 100#(and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 103#(and (= thread2Thread1of1ForFork0_~cond~1 0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), 5#L45true, Black: 115#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (= ~N~0 ~L~0)), Black: 113#(not (= ~L~0 (* 4294967296 (div ~L~0 4294967296)))), Black: 110#(= ~N~0 ~L~0), Black: 117#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 1)), 402#true]) [2024-02-07 14:41:08,048 INFO L294 olderBase$Statistics]: this new event has 21 ancestors and is cut-off event [2024-02-07 14:41:08,049 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-02-07 14:41:08,049 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-02-07 14:41:08,049 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-02-07 14:41:08,577 INFO L124 PetriNetUnfolderBase]: 8987/13643 cut-off events. [2024-02-07 14:41:08,577 INFO L125 PetriNetUnfolderBase]: For 151940/154135 co-relation queries the response was YES. [2024-02-07 14:41:08,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81138 conditions, 13643 events. 8987/13643 cut-off events. For 151940/154135 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 89773 event pairs, 1130 based on Foata normal form. 325/13715 useless extension candidates. Maximal degree in co-relation 81079. Up to 6079 conditions per place. [2024-02-07 14:41:08,674 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 248 selfloop transitions, 187 changer transitions 1/462 dead transitions. [2024-02-07 14:41:08,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 462 transitions, 7533 flow [2024-02-07 14:41:08,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:41:08,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:41:08,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-02-07 14:41:08,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5842105263157895 [2024-02-07 14:41:08,676 INFO L175 Difference]: Start difference. First operand has 161 places, 351 transitions, 5419 flow. Second operand 5 states and 111 transitions. [2024-02-07 14:41:08,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 462 transitions, 7533 flow [2024-02-07 14:41:09,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 462 transitions, 7490 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-02-07 14:41:09,172 INFO L231 Difference]: Finished difference. Result has 166 places, 378 transitions, 6364 flow [2024-02-07 14:41:09,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5384, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6364, PETRI_PLACES=166, PETRI_TRANSITIONS=378} [2024-02-07 14:41:09,173 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 125 predicate places. [2024-02-07 14:41:09,173 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 378 transitions, 6364 flow [2024-02-07 14:41:09,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2024-02-07 14:41:09,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:41:09,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:41:09,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-02-07 14:41:09,174 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-02-07 14:41:09,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:41:09,174 INFO L85 PathProgramCache]: Analyzing trace with hash 543388209, now seen corresponding path program 7 times [2024-02-07 14:41:09,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:41:09,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132240049] [2024-02-07 14:41:09,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:41:09,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:41:09,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:41:09,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:41:09,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:41:09,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132240049] [2024-02-07 14:41:09,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132240049] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:41:09,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:41:09,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:41:09,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919854109] [2024-02-07 14:41:09,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:41:09,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:41:09,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:41:09,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:41:09,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:41:09,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-02-07 14:41:09,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 378 transitions, 6364 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2024-02-07 14:41:09,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:41:09,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-02-07 14:41:09,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:41:11,456 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([287] L45-->L50: Formula: (and (let ((.cse0 (mod v_~N~0_106 4294967296))) (or (and (= v_~N~0_106 v_~N~0_105) (= |v_thread1Thread1of1ForFork2_#t~post1_6| |v_thread1Thread1of1ForFork2_#t~post1_5|) (= v_~p~0_85 v_~p~0_86) (<= .cse0 0)) (and (not (= 0 .cse0)) (= v_~p~0_85 (+ v_~p~0_86 v_~M~0_62)) (<= 1 .cse0) (= v_~N~0_106 (+ v_~N~0_105 1)) (< 0 .cse0)))) (<= (mod v_~N~0_105 4294967296) 4294967294)) InVars {~p~0=v_~p~0_86, ~N~0=v_~N~0_106, ~M~0=v_~M~0_62, thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_5|} OutVars{~p~0=v_~p~0_85, ~N~0=v_~N~0_105, ~M~0=v_~M~0_62, thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_6|} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_#t~post1, ~p~0, ~N~0][377], [Black: 368#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 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olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([287] L45-->L50: Formula: (and (let ((.cse0 (mod v_~N~0_106 4294967296))) (or (and (= v_~N~0_106 v_~N~0_105) (= |v_thread1Thread1of1ForFork2_#t~post1_6| |v_thread1Thread1of1ForFork2_#t~post1_5|) (= v_~p~0_85 v_~p~0_86) (<= .cse0 0)) (and (not (= 0 .cse0)) (= v_~p~0_85 (+ v_~p~0_86 v_~M~0_62)) (<= 1 .cse0) (= v_~N~0_106 (+ v_~N~0_105 1)) (< 0 .cse0)))) (<= (mod v_~N~0_105 4294967296) 4294967294)) InVars {~p~0=v_~p~0_86, ~N~0=v_~N~0_106, ~M~0=v_~M~0_62, thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_5|} OutVars{~p~0=v_~p~0_85, ~N~0=v_~N~0_105, ~M~0=v_~M~0_62, thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_6|} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_#t~post1, ~p~0, ~N~0][377], [Black: 368#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= 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olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([287] L45-->L50: Formula: (and (let ((.cse0 (mod v_~N~0_106 4294967296))) (or (and (= v_~N~0_106 v_~N~0_105) (= |v_thread1Thread1of1ForFork2_#t~post1_6| |v_thread1Thread1of1ForFork2_#t~post1_5|) (= v_~p~0_85 v_~p~0_86) (<= .cse0 0)) (and (not (= 0 .cse0)) (= v_~p~0_85 (+ v_~p~0_86 v_~M~0_62)) (<= 1 .cse0) (= v_~N~0_106 (+ v_~N~0_105 1)) (< 0 .cse0)))) (<= (mod v_~N~0_105 4294967296) 4294967294)) InVars {~p~0=v_~p~0_86, ~N~0=v_~N~0_106, ~M~0=v_~M~0_62, thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_5|} OutVars{~p~0=v_~p~0_85, ~N~0=v_~N~0_105, ~M~0=v_~M~0_62, thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_6|} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_#t~post1, ~p~0, ~N~0][266], [Black: 368#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= 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~N~0 4294967296) 4294967296))), 34#L80true, 414#true, Black: 115#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (= ~N~0 ~L~0)), Black: 110#(= ~N~0 ~L~0), Black: 117#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 1)), Black: 108#true]) [2024-02-07 14:41:11,506 INFO L294 olderBase$Statistics]: this new event has 25 ancestors and is cut-off event [2024-02-07 14:41:11,506 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-02-07 14:41:11,506 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-07 14:41:11,506 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2024-02-07 14:41:11,530 INFO L124 PetriNetUnfolderBase]: 8038/12414 cut-off events. [2024-02-07 14:41:11,530 INFO L125 PetriNetUnfolderBase]: For 173677/175432 co-relation queries the response was YES. [2024-02-07 14:41:11,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80182 conditions, 12414 events. 8038/12414 cut-off events. For 173677/175432 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 82982 event pairs, 1331 based on Foata normal form. 282/12305 useless extension candidates. Maximal degree in co-relation 80121. Up to 4637 conditions per place. [2024-02-07 14:41:11,624 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 290 selfloop transitions, 252 changer transitions 5/606 dead transitions. [2024-02-07 14:41:11,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 606 transitions, 11000 flow [2024-02-07 14:41:11,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:41:11,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:41:11,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-02-07 14:41:11,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543859649122807 [2024-02-07 14:41:11,626 INFO L175 Difference]: Start difference. First operand has 166 places, 378 transitions, 6364 flow. Second operand 6 states and 124 transitions. [2024-02-07 14:41:11,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 606 transitions, 11000 flow [2024-02-07 14:41:12,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 606 transitions, 10323 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-02-07 14:41:12,195 INFO L231 Difference]: Finished difference. Result has 170 places, 470 transitions, 8683 flow [2024-02-07 14:41:12,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5790, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8683, PETRI_PLACES=170, PETRI_TRANSITIONS=470} [2024-02-07 14:41:12,196 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 129 predicate places. [2024-02-07 14:41:12,196 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 470 transitions, 8683 flow [2024-02-07 14:41:12,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2024-02-07 14:41:12,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:41:12,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:41:12,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-02-07 14:41:12,197 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-02-07 14:41:12,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:41:12,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1213174257, now seen corresponding path program 8 times [2024-02-07 14:41:12,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:41:12,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601386055] [2024-02-07 14:41:12,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:41:12,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:41:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:41:12,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:41:12,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:41:12,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601386055] [2024-02-07 14:41:12,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601386055] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:41:12,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:41:12,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:41:12,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028015969] [2024-02-07 14:41:12,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:41:12,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:41:12,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:41:12,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:41:12,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:41:12,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-02-07 14:41:12,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 470 transitions, 8683 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-02-07 14:41:12,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:41:12,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-02-07 14:41:12,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:41:15,545 INFO L124 PetriNetUnfolderBase]: 12022/17851 cut-off events. [2024-02-07 14:41:15,546 INFO L125 PetriNetUnfolderBase]: For 233371/236063 co-relation queries the response was YES. [2024-02-07 14:41:15,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118475 conditions, 17851 events. 12022/17851 cut-off events. For 233371/236063 co-relation queries the response was YES. Maximal size of possible extension queue 1096. Compared 117591 event pairs, 1240 based on Foata normal form. 583/18096 useless extension candidates. Maximal degree in co-relation 118412. Up to 5705 conditions per place. [2024-02-07 14:41:15,938 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 300 selfloop transitions, 348 changer transitions 6/680 dead transitions. [2024-02-07 14:41:15,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 680 transitions, 12732 flow [2024-02-07 14:41:15,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:41:15,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:41:15,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-02-07 14:41:15,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5676691729323309 [2024-02-07 14:41:15,940 INFO L175 Difference]: Start difference. First operand has 170 places, 470 transitions, 8683 flow. Second operand 7 states and 151 transitions. [2024-02-07 14:41:15,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 680 transitions, 12732 flow [2024-02-07 14:41:16,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 680 transitions, 12394 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-02-07 14:41:16,960 INFO L231 Difference]: Finished difference. Result has 174 places, 543 transitions, 10629 flow [2024-02-07 14:41:16,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8390, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=272, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10629, PETRI_PLACES=174, PETRI_TRANSITIONS=543} [2024-02-07 14:41:16,961 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 133 predicate places. [2024-02-07 14:41:16,961 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 543 transitions, 10629 flow [2024-02-07 14:41:16,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-02-07 14:41:16,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:41:16,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:41:16,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-02-07 14:41:16,962 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-02-07 14:41:16,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:41:16,962 INFO L85 PathProgramCache]: Analyzing trace with hash -477469603, now seen corresponding path program 9 times [2024-02-07 14:41:16,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:41:16,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115373357] [2024-02-07 14:41:16,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:41:16,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:41:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:41:17,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:41:17,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:41:17,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115373357] [2024-02-07 14:41:17,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115373357] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:41:17,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:41:17,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:41:17,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505871857] [2024-02-07 14:41:17,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:41:17,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:41:17,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:41:17,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:41:17,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:41:17,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-02-07 14:41:17,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 543 transitions, 10629 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2024-02-07 14:41:17,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:41:17,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-02-07 14:41:17,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:41:20,166 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([287] L45-->L50: Formula: (and (let ((.cse0 (mod v_~N~0_106 4294967296))) (or (and (= v_~N~0_106 v_~N~0_105) (= |v_thread1Thread1of1ForFork2_#t~post1_6| |v_thread1Thread1of1ForFork2_#t~post1_5|) (= v_~p~0_85 v_~p~0_86) (<= .cse0 0)) (and (not (= 0 .cse0)) (= v_~p~0_85 (+ v_~p~0_86 v_~M~0_62)) (<= 1 .cse0) (= v_~N~0_106 (+ v_~N~0_105 1)) (< 0 .cse0)))) (<= (mod v_~N~0_105 4294967296) 4294967294)) InVars {~p~0=v_~p~0_86, ~N~0=v_~N~0_106, ~M~0=v_~M~0_62, thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_5|} OutVars{~p~0=v_~p~0_85, ~N~0=v_~N~0_105, ~M~0=v_~M~0_62, thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_6|} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_#t~post1, ~p~0, ~N~0][335], [Black: 368#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0))) (or (< 0 (mod ~L~0 4294967296)) (< (mod ~N~0 4294967296) 2)) (= ~p~0 0) (= ~q~0 0)), Black: 170#(or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))), Black: 378#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (< 0 (mod ~L~0 4294967296)) (< (mod ~N~0 4294967296) 2)) (= (mod ~q~0 4294967296) (mod ~p~0 4294967296))), Black: 172#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1)), Black: 376#(and (or (< 0 (mod ~L~0 4294967296)) (< (mod ~N~0 4294967296) 2)) (<= 1 thread1Thread1of1ForFork2_~cond~0) (= (mod ~q~0 4294967296) (mod ~p~0 4294967296)) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 130#(and (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 366#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (< 0 (mod ~L~0 4294967296)) (< (mod ~N~0 4294967296) 2)) (= ~p~0 0) (= ~q~0 0)), Black: 132#(and (= ~N~0 ~L~0) (= thread2Thread1of1ForFork0_~cond~1 0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 173#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 348#(and (or (< 0 (mod ~L~0 4294967296)) (< (mod ~N~0 4294967296) 2)) (<= 1 thread1Thread1of1ForFork2_~cond~0) (or (and (<= 2 (mod ~L~0 4294967296)) (= (mod ~p~0 2) 0)) (= ~p~0 0)) (= ~q~0 0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 126#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (= ~N~0 ~L~0)), Black: 331#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (or (< 0 (mod ~L~0 4294967296)) (and (= ~p~0 (+ (* 4294967296 (div ~p~0 4294967296)) (mod ~q~0 4294967296))) (<= (mod ~N~0 4294967296) 1))) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 364#(and (or (< 0 (mod ~L~0 4294967296)) (< (mod ~N~0 4294967296) 2)) (<= 1 thread1Thread1of1ForFork2_~cond~0) (= ~p~0 0) (= ~q~0 0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 171#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0)))), Black: 382#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0))) (or (< 0 (mod ~L~0 4294967296)) (< (mod ~N~0 4294967296) 2)) (= (mod ~q~0 4294967296) (mod ~p~0 4294967296))), Black: 372#(and (or (< 0 (mod ~L~0 4294967296)) (< (mod ~N~0 4294967296) 2)) (= (mod ~q~0 4294967296) (mod ~p~0 4294967296))), 54#true, Black: 360#(and (or (and (= 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(<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 1)), Black: 108#true]) [2024-02-07 14:41:20,167 INFO L294 olderBase$Statistics]: this new event has 22 ancestors and is cut-off event [2024-02-07 14:41:20,167 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2024-02-07 14:41:20,167 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2024-02-07 14:41:20,167 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-07 14:41:20,566 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([287] L45-->L50: Formula: (and (let ((.cse0 (mod v_~N~0_106 4294967296))) (or (and (= v_~N~0_106 v_~N~0_105) (= |v_thread1Thread1of1ForFork2_#t~post1_6| |v_thread1Thread1of1ForFork2_#t~post1_5|) (= v_~p~0_85 v_~p~0_86) (<= .cse0 0)) (and (not (= 0 .cse0)) (= v_~p~0_85 (+ v_~p~0_86 v_~M~0_62)) (<= 1 .cse0) (= 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14:41:20,566 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is not cut-off event [2024-02-07 14:41:20,685 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([287] L45-->L50: Formula: (and (let ((.cse0 (mod v_~N~0_106 4294967296))) (or (and (= v_~N~0_106 v_~N~0_105) (= |v_thread1Thread1of1ForFork2_#t~post1_6| |v_thread1Thread1of1ForFork2_#t~post1_5|) (= v_~p~0_85 v_~p~0_86) (<= .cse0 0)) (and (not (= 0 .cse0)) (= v_~p~0_85 (+ v_~p~0_86 v_~M~0_62)) (<= 1 .cse0) (= v_~N~0_106 (+ v_~N~0_105 1)) (< 0 .cse0)))) (<= (mod v_~N~0_105 4294967296) 4294967294)) InVars {~p~0=v_~p~0_86, ~N~0=v_~N~0_106, ~M~0=v_~M~0_62, thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_5|} OutVars{~p~0=v_~p~0_85, ~N~0=v_~N~0_105, ~M~0=v_~M~0_62, thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_6|} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_#t~post1, ~p~0, ~N~0][442], [Black: 368#(and (or (and (= 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1)) (< 0 thread1Thread1of1ForFork2_~cond~0)) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 89#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1)), Black: 96#(or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))), Black: 100#(and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), 443#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 103#(and (= thread2Thread1of1ForFork0_~cond~1 0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), 34#L80true, Black: 115#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (= ~N~0 ~L~0)), Black: 110#(= ~N~0 ~L~0), Black: 117#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 1)), Black: 108#true]) [2024-02-07 14:41:20,685 INFO L294 olderBase$Statistics]: this new event has 24 ancestors and is cut-off event [2024-02-07 14:41:20,685 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-02-07 14:41:20,685 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-02-07 14:41:20,685 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-02-07 14:41:20,841 INFO L124 PetriNetUnfolderBase]: 13003/19463 cut-off events. [2024-02-07 14:41:20,842 INFO L125 PetriNetUnfolderBase]: For 305475/308203 co-relation queries the response was YES. [2024-02-07 14:41:20,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136184 conditions, 19463 events. 13003/19463 cut-off events. For 305475/308203 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 131778 event pairs, 1514 based on Foata normal form. 690/19678 useless extension candidates. Maximal degree in co-relation 136120. Up to 6017 conditions per place. [2024-02-07 14:41:21,049 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 370 selfloop transitions, 375 changer transitions 10/814 dead transitions. [2024-02-07 14:41:21,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 814 transitions, 15707 flow [2024-02-07 14:41:21,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-07 14:41:21,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-07 14:41:21,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-02-07 14:41:21,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-02-07 14:41:21,050 INFO L175 Difference]: Start difference. First operand has 174 places, 543 transitions, 10629 flow. Second operand 9 states and 180 transitions. [2024-02-07 14:41:21,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 814 transitions, 15707 flow [2024-02-07 14:41:22,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 814 transitions, 14899 flow, removed 125 selfloop flow, removed 5 redundant places. [2024-02-07 14:41:22,638 INFO L231 Difference]: Finished difference. Result has 180 places, 611 transitions, 12253 flow [2024-02-07 14:41:22,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10013, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12253, PETRI_PLACES=180, PETRI_TRANSITIONS=611} [2024-02-07 14:41:22,639 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 139 predicate places. [2024-02-07 14:41:22,639 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 611 transitions, 12253 flow [2024-02-07 14:41:22,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2024-02-07 14:41:22,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:41:22,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:41:22,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-02-07 14:41:22,640 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-02-07 14:41:22,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:41:22,640 INFO L85 PathProgramCache]: Analyzing trace with hash -912251215, now seen corresponding path program 10 times [2024-02-07 14:41:22,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:41:22,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709929521] [2024-02-07 14:41:22,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:41:22,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:41:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:41:22,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:41:22,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:41:22,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709929521] [2024-02-07 14:41:22,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709929521] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:41:22,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:41:22,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:41:22,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062493894] [2024-02-07 14:41:22,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:41:22,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:41:22,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:41:22,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:41:22,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:41:22,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-02-07 14:41:22,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 611 transitions, 12253 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2024-02-07 14:41:22,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:41:22,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-02-07 14:41:22,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:41:25,897 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([300] L80-->L83: Formula: (and (= (+ v_~L~0_14 1) v_~L~0_15) (= (+ v_~q~0_14 v_~M~0_14) v_~q~0_13)) InVars {~q~0=v_~q~0_14, ~M~0=v_~M~0_14, ~L~0=v_~L~0_15} OutVars{~q~0=v_~q~0_13, ~M~0=v_~M~0_14, thread3Thread1of1ForFork1_#t~post2=|v_thread3Thread1of1ForFork1_#t~post2_1|, ~L~0=v_~L~0_14} AuxVars[] AssignedVars[~L~0, ~q~0, thread3Thread1of1ForFork1_#t~post2][145], [Black: 368#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0))) (or (< 0 (mod ~L~0 4294967296)) (< (mod ~N~0 4294967296) 2)) (= 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thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), 140#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0)))), Black: 115#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (= ~N~0 ~L~0)), Black: 113#(not (= ~L~0 (* 4294967296 (div ~L~0 4294967296)))), 35#L53true, Black: 110#(= ~N~0 ~L~0), Black: 117#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 1))]) [2024-02-07 14:41:25,897 INFO L294 olderBase$Statistics]: this new event has 22 ancestors and is cut-off event [2024-02-07 14:41:25,897 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-07 14:41:25,897 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2024-02-07 14:41:25,897 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-07 14:41:26,091 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([300] L80-->L83: Formula: (and (= (+ v_~L~0_14 1) v_~L~0_15) (= (+ v_~q~0_14 v_~M~0_14) v_~q~0_13)) InVars {~q~0=v_~q~0_14, ~M~0=v_~M~0_14, ~L~0=v_~L~0_15} OutVars{~q~0=v_~q~0_13, ~M~0=v_~M~0_14, thread3Thread1of1ForFork1_#t~post2=|v_thread3Thread1of1ForFork1_#t~post2_1|, ~L~0=v_~L~0_14} AuxVars[] AssignedVars[~L~0, ~q~0, thread3Thread1of1ForFork1_#t~post2][145], [Black: 368#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 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~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (= ~N~0 ~L~0)), Black: 113#(not (= ~L~0 (* 4294967296 (div ~L~0 4294967296)))), 35#L53true, Black: 110#(= ~N~0 ~L~0), Black: 117#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 1))]) [2024-02-07 14:41:26,091 INFO L294 olderBase$Statistics]: this new event has 23 ancestors and is cut-off event [2024-02-07 14:41:26,091 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-07 14:41:26,091 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-02-07 14:41:26,091 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-07 14:41:26,125 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([287] L45-->L50: Formula: (and (let ((.cse0 (mod v_~N~0_106 4294967296))) (or (and (= v_~N~0_106 v_~N~0_105) (= |v_thread1Thread1of1ForFork2_#t~post1_6| |v_thread1Thread1of1ForFork2_#t~post1_5|) (= v_~p~0_85 v_~p~0_86) (<= .cse0 0)) (and (not (= 0 .cse0)) (= v_~p~0_85 (+ v_~p~0_86 v_~M~0_62)) (<= 1 .cse0) (= v_~N~0_106 (+ v_~N~0_105 1)) (< 0 .cse0)))) (<= (mod v_~N~0_105 4294967296) 4294967294)) InVars {~p~0=v_~p~0_86, ~N~0=v_~N~0_106, ~M~0=v_~M~0_62, thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_5|} OutVars{~p~0=v_~p~0_85, ~N~0=v_~N~0_105, ~M~0=v_~M~0_62, thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_6|} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_#t~post1, ~p~0, ~N~0][138], [Black: 368#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) 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117#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 1)), Black: 108#true]) [2024-02-07 14:41:26,126 INFO L294 olderBase$Statistics]: this new event has 23 ancestors and is cut-off event [2024-02-07 14:41:26,126 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-07 14:41:26,126 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-02-07 14:41:26,126 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-07 14:41:26,126 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([300] L80-->L83: Formula: (and (= (+ v_~L~0_14 1) v_~L~0_15) (= (+ v_~q~0_14 v_~M~0_14) v_~q~0_13)) InVars {~q~0=v_~q~0_14, ~M~0=v_~M~0_14, ~L~0=v_~L~0_15} OutVars{~q~0=v_~q~0_13, ~M~0=v_~M~0_14, thread3Thread1of1ForFork1_#t~post2=|v_thread3Thread1of1ForFork1_#t~post2_1|, ~L~0=v_~L~0_14} AuxVars[] 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INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-02-07 14:41:26,235 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([287] L45-->L50: Formula: (and (let ((.cse0 (mod v_~N~0_106 4294967296))) (or (and (= v_~N~0_106 v_~N~0_105) (= |v_thread1Thread1of1ForFork2_#t~post1_6| |v_thread1Thread1of1ForFork2_#t~post1_5|) (= v_~p~0_85 v_~p~0_86) (<= .cse0 0)) (and (not (= 0 .cse0)) (= v_~p~0_85 (+ v_~p~0_86 v_~M~0_62)) (<= 1 .cse0) (= v_~N~0_106 (+ v_~N~0_105 1)) (< 0 .cse0)))) (<= (mod v_~N~0_105 4294967296) 4294967294)) InVars {~p~0=v_~p~0_86, ~N~0=v_~N~0_106, ~M~0=v_~M~0_62, thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_5|} OutVars{~p~0=v_~p~0_85, ~N~0=v_~N~0_105, ~M~0=v_~M~0_62, thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_6|} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_#t~post1, ~p~0, ~N~0][138], [Black: 368#(and (or (and (= 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inserting event number 4 for the transition-marking pair ([300] L80-->L83: Formula: (and (= (+ v_~L~0_14 1) v_~L~0_15) (= (+ v_~q~0_14 v_~M~0_14) v_~q~0_13)) InVars {~q~0=v_~q~0_14, ~M~0=v_~M~0_14, ~L~0=v_~L~0_15} OutVars{~q~0=v_~q~0_13, ~M~0=v_~M~0_14, thread3Thread1of1ForFork1_#t~post2=|v_thread3Thread1of1ForFork1_#t~post2_1|, ~L~0=v_~L~0_14} AuxVars[] AssignedVars[~L~0, ~q~0, thread3Thread1of1ForFork1_#t~post2][147], [Black: 368#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0))) (or (< 0 (mod ~L~0 4294967296)) (< (mod ~N~0 4294967296) 2)) (= ~p~0 0) (= ~q~0 0)), Black: 170#(or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* 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Black: 52#(and (= ~p~0 0) (= ~q~0 0)), Black: 57#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), Black: 65#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (<= ~L~0 (* 4294967296 (div ~L~0 4294967296))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), Black: 451#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (or (< (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread2Thread1of1ForFork0_~cond~1 0)) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), 2#L83true, Black: 443#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 75#(and (<= 1 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(<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 103#(and (= thread2Thread1of1ForFork0_~cond~1 0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), 5#L45true, 140#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0)))), Black: 115#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (= ~N~0 ~L~0)), Black: 113#(not (= ~L~0 (* 4294967296 (div ~L~0 4294967296)))), Black: 110#(= ~N~0 ~L~0), Black: 117#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 1))]) [2024-02-07 14:41:26,236 INFO L294 olderBase$Statistics]: this new event has 24 ancestors and is cut-off event [2024-02-07 14:41:26,236 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-07 14:41:26,236 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-02-07 14:41:26,236 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-07 14:41:26,363 INFO L124 PetriNetUnfolderBase]: 12324/18548 cut-off events. [2024-02-07 14:41:26,363 INFO L125 PetriNetUnfolderBase]: For 258421/260718 co-relation queries the response was YES. [2024-02-07 14:41:26,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130133 conditions, 18548 events. 12324/18548 cut-off events. For 258421/260718 co-relation queries the response was YES. Maximal size of possible extension queue 1147. Compared 124448 event pairs, 1566 based on Foata normal form. 367/18375 useless extension candidates. Maximal degree in co-relation 130067. Up to 14986 conditions per place. [2024-02-07 14:41:26,570 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 356 selfloop transitions, 48 changer transitions 2/638 dead transitions. [2024-02-07 14:41:26,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 638 transitions, 13267 flow [2024-02-07 14:41:26,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:41:26,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:41:26,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-02-07 14:41:26,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5684210526315789 [2024-02-07 14:41:26,573 INFO L175 Difference]: Start difference. First operand has 180 places, 611 transitions, 12253 flow. Second operand 5 states and 108 transitions. [2024-02-07 14:41:26,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 638 transitions, 13267 flow [2024-02-07 14:41:28,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 638 transitions, 12545 flow, removed 65 selfloop flow, removed 10 redundant places. [2024-02-07 14:41:28,226 INFO L231 Difference]: Finished difference. Result has 173 places, 612 transitions, 11678 flow [2024-02-07 14:41:28,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11506, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=11678, PETRI_PLACES=173, PETRI_TRANSITIONS=612} [2024-02-07 14:41:28,227 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 132 predicate places. [2024-02-07 14:41:28,227 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 612 transitions, 11678 flow [2024-02-07 14:41:28,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2024-02-07 14:41:28,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:41:28,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:41:28,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-02-07 14:41:28,228 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-02-07 14:41:28,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:41:28,229 INFO L85 PathProgramCache]: Analyzing trace with hash 688403759, now seen corresponding path program 11 times [2024-02-07 14:41:28,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:41:28,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490229701] [2024-02-07 14:41:28,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:41:28,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:41:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:41:28,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:41:28,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:41:28,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490229701] [2024-02-07 14:41:28,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490229701] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:41:28,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:41:28,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:41:28,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569018303] [2024-02-07 14:41:28,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:41:28,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:41:28,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:41:28,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:41:28,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:41:28,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-02-07 14:41:28,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 612 transitions, 11678 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2024-02-07 14:41:28,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:41:28,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-02-07 14:41:28,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:41:31,100 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([300] L80-->L83: Formula: (and (= (+ v_~L~0_14 1) v_~L~0_15) (= (+ v_~q~0_14 v_~M~0_14) v_~q~0_13)) InVars {~q~0=v_~q~0_14, ~M~0=v_~M~0_14, ~L~0=v_~L~0_15} OutVars{~q~0=v_~q~0_13, ~M~0=v_~M~0_14, thread3Thread1of1ForFork1_#t~post2=|v_thread3Thread1of1ForFork1_#t~post2_1|, ~L~0=v_~L~0_14} AuxVars[] AssignedVars[~L~0, ~q~0, thread3Thread1of1ForFork1_#t~post2][152], [Black: 368#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0))) (or (< 0 (mod ~L~0 4294967296)) (< (mod ~N~0 4294967296) 2)) (= 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thread1Thread1of1ForFork2_~cond~0)) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), 82#true, Black: 87#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 89#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1)), Black: 479#(and (= ~N~0 ~L~0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 481#(and (= ~N~0 ~L~0) (= thread2Thread1of1ForFork0_~cond~1 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), 457#(or (< (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread2Thread1of1ForFork0_~cond~1 0)), Black: 100#(and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 103#(and (= thread2Thread1of1ForFork0_~cond~1 0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), 140#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 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olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-07 14:41:31,288 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([287] L45-->L50: Formula: (and (let ((.cse0 (mod v_~N~0_106 4294967296))) (or (and (= v_~N~0_106 v_~N~0_105) (= |v_thread1Thread1of1ForFork2_#t~post1_6| |v_thread1Thread1of1ForFork2_#t~post1_5|) (= v_~p~0_85 v_~p~0_86) (<= .cse0 0)) (and (not (= 0 .cse0)) (= v_~p~0_85 (+ v_~p~0_86 v_~M~0_62)) (<= 1 .cse0) (= v_~N~0_106 (+ v_~N~0_105 1)) (< 0 .cse0)))) (<= (mod v_~N~0_105 4294967296) 4294967294)) InVars {~p~0=v_~p~0_86, ~N~0=v_~N~0_106, ~M~0=v_~M~0_62, thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_5|} OutVars{~p~0=v_~p~0_85, ~N~0=v_~N~0_105, ~M~0=v_~M~0_62, thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_6|} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_#t~post1, ~p~0, ~N~0][146], [Black: 368#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0))) (or (< 0 (mod ~L~0 4294967296)) (< (mod ~N~0 4294967296) 2)) (= ~p~0 0) (= ~q~0 0)), Black: 170#(or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))), Black: 378#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (< 0 (mod ~L~0 4294967296)) (< (mod ~N~0 4294967296) 2)) (= (mod ~q~0 4294967296) (mod ~p~0 4294967296))), 18#L99-4true, Black: 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(or (< (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread2Thread1of1ForFork0_~cond~1 0)) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), 137#true, Black: 75#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 74#(< (* (div ~N~0 4294967296) 4294967296) ~N~0), Black: 77#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 73#(or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0)), Black: 460#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 465#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (or (< (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread2Thread1of1ForFork0_~cond~1 0)) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 468#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 85#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), Black: 86#(and (or (< ~L~0 (+ (* 4294967296 (div ~L~0 4294967296)) 1)) (< 0 thread1Thread1of1ForFork2_~cond~0)) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), 82#true, Black: 87#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 89#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1)), Black: 479#(and (= ~N~0 ~L~0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 481#(and (= ~N~0 ~L~0) (= thread2Thread1of1ForFork0_~cond~1 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 96#(or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))), Black: 100#(and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), 443#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 103#(and (= thread2Thread1of1ForFork0_~cond~1 0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), 34#L80true, Black: 115#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (= ~N~0 ~L~0)), Black: 110#(= ~N~0 ~L~0), Black: 108#true]) [2024-02-07 14:41:31,288 INFO L294 olderBase$Statistics]: this new event has 23 ancestors and is cut-off event [2024-02-07 14:41:31,288 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-02-07 14:41:31,289 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-07 14:41:31,289 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-07 14:41:31,289 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([300] L80-->L83: Formula: (and (= (+ v_~L~0_14 1) v_~L~0_15) (= (+ v_~q~0_14 v_~M~0_14) v_~q~0_13)) InVars {~q~0=v_~q~0_14, ~M~0=v_~M~0_14, ~L~0=v_~L~0_15} OutVars{~q~0=v_~q~0_13, ~M~0=v_~M~0_14, thread3Thread1of1ForFork1_#t~post2=|v_thread3Thread1of1ForFork1_#t~post2_1|, ~L~0=v_~L~0_14} AuxVars[] AssignedVars[~L~0, ~q~0, thread3Thread1of1ForFork1_#t~post2][154], [Black: 368#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= 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inserting event number 4 for the transition-marking pair ([287] L45-->L50: Formula: (and (let ((.cse0 (mod v_~N~0_106 4294967296))) (or (and (= v_~N~0_106 v_~N~0_105) (= |v_thread1Thread1of1ForFork2_#t~post1_6| |v_thread1Thread1of1ForFork2_#t~post1_5|) (= v_~p~0_85 v_~p~0_86) (<= .cse0 0)) (and (not (= 0 .cse0)) (= v_~p~0_85 (+ v_~p~0_86 v_~M~0_62)) (<= 1 .cse0) (= v_~N~0_106 (+ v_~N~0_105 1)) (< 0 .cse0)))) (<= (mod v_~N~0_105 4294967296) 4294967294)) InVars {~p~0=v_~p~0_86, ~N~0=v_~N~0_106, ~M~0=v_~M~0_62, thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_5|} OutVars{~p~0=v_~p~0_85, ~N~0=v_~N~0_105, ~M~0=v_~M~0_62, thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_6|} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_#t~post1, ~p~0, ~N~0][146], [Black: 368#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= 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cut-off event [2024-02-07 14:41:31,646 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-07 14:41:31,647 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([300] L80-->L83: Formula: (and (= (+ v_~L~0_14 1) v_~L~0_15) (= (+ v_~q~0_14 v_~M~0_14) v_~q~0_13)) InVars {~q~0=v_~q~0_14, ~M~0=v_~M~0_14, ~L~0=v_~L~0_15} OutVars{~q~0=v_~q~0_13, ~M~0=v_~M~0_14, thread3Thread1of1ForFork1_#t~post2=|v_thread3Thread1of1ForFork1_#t~post2_1|, ~L~0=v_~L~0_14} AuxVars[] AssignedVars[~L~0, ~q~0, thread3Thread1of1ForFork1_#t~post2][154], [Black: 368#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 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~N~0 ~L~0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 481#(and (= ~N~0 ~L~0) (= thread2Thread1of1ForFork0_~cond~1 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), 172#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1)), 457#(or (< (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread2Thread1of1ForFork0_~cond~1 0)), Black: 100#(and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 103#(and (= thread2Thread1of1ForFork0_~cond~1 0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), 5#L45true, 140#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0)))), Black: 115#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (= ~N~0 ~L~0)), Black: 113#(not (= ~L~0 (* 4294967296 (div ~L~0 4294967296)))), Black: 110#(= ~N~0 ~L~0)]) [2024-02-07 14:41:31,647 INFO L294 olderBase$Statistics]: this new event has 24 ancestors and is cut-off event [2024-02-07 14:41:31,647 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-07 14:41:31,647 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-02-07 14:41:31,647 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-07 14:41:31,764 INFO L124 PetriNetUnfolderBase]: 12414/18661 cut-off events. [2024-02-07 14:41:31,764 INFO L125 PetriNetUnfolderBase]: For 238937/241125 co-relation queries the response was YES. [2024-02-07 14:41:31,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126540 conditions, 18661 events. 12414/18661 cut-off events. For 238937/241125 co-relation queries the response was YES. Maximal size of possible extension queue 1147. Compared 124781 event pairs, 1601 based on Foata normal form. 308/18478 useless extension candidates. Maximal degree in co-relation 126475. Up to 15073 conditions per place. [2024-02-07 14:41:31,961 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 342 selfloop transitions, 60 changer transitions 1/635 dead transitions. [2024-02-07 14:41:31,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 635 transitions, 12669 flow [2024-02-07 14:41:31,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:41:31,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:41:31,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 101 transitions. [2024-02-07 14:41:31,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.531578947368421 [2024-02-07 14:41:31,962 INFO L175 Difference]: Start difference. First operand has 173 places, 612 transitions, 11678 flow. Second operand 5 states and 101 transitions. [2024-02-07 14:41:31,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 635 transitions, 12669 flow [2024-02-07 14:41:33,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 635 transitions, 12559 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-02-07 14:41:33,386 INFO L231 Difference]: Finished difference. Result has 178 places, 622 transitions, 11913 flow [2024-02-07 14:41:33,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11585, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=11913, PETRI_PLACES=178, PETRI_TRANSITIONS=622} [2024-02-07 14:41:33,386 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 137 predicate places. [2024-02-07 14:41:33,387 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 622 transitions, 11913 flow [2024-02-07 14:41:33,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2024-02-07 14:41:33,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:41:33,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:41:33,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-02-07 14:41:33,387 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-02-07 14:41:33,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:41:33,387 INFO L85 PathProgramCache]: Analyzing trace with hash 9434099, now seen corresponding path program 12 times [2024-02-07 14:41:33,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:41:33,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938584511] [2024-02-07 14:41:33,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:41:33,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:41:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:41:33,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:41:33,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:41:33,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938584511] [2024-02-07 14:41:33,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938584511] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:41:33,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:41:33,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:41:33,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011515927] [2024-02-07 14:41:33,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:41:33,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:41:33,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:41:33,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:41:33,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:41:33,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-02-07 14:41:33,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 622 transitions, 11913 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2024-02-07 14:41:33,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:41:33,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-02-07 14:41:33,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:41:36,555 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([300] L80-->L83: Formula: (and (= (+ v_~L~0_14 1) v_~L~0_15) (= (+ v_~q~0_14 v_~M~0_14) v_~q~0_13)) InVars {~q~0=v_~q~0_14, ~M~0=v_~M~0_14, ~L~0=v_~L~0_15} OutVars{~q~0=v_~q~0_13, ~M~0=v_~M~0_14, thread3Thread1of1ForFork1_#t~post2=|v_thread3Thread1of1ForFork1_#t~post2_1|, ~L~0=v_~L~0_14} AuxVars[] AssignedVars[~L~0, ~q~0, thread3Thread1of1ForFork1_#t~post2][161], [Black: 368#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0))) (or (< 0 (mod ~L~0 4294967296)) (< (mod ~N~0 4294967296) 2)) (= 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L45-->L50: Formula: (and (let ((.cse0 (mod v_~N~0_106 4294967296))) (or (and (= v_~N~0_106 v_~N~0_105) (= |v_thread1Thread1of1ForFork2_#t~post1_6| |v_thread1Thread1of1ForFork2_#t~post1_5|) (= v_~p~0_85 v_~p~0_86) (<= .cse0 0)) (and (not (= 0 .cse0)) (= v_~p~0_85 (+ v_~p~0_86 v_~M~0_62)) (<= 1 .cse0) (= v_~N~0_106 (+ v_~N~0_105 1)) (< 0 .cse0)))) (<= (mod v_~N~0_105 4294967296) 4294967294)) InVars {~p~0=v_~p~0_86, ~N~0=v_~N~0_106, ~M~0=v_~M~0_62, thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_5|} OutVars{~p~0=v_~p~0_85, ~N~0=v_~N~0_105, ~M~0=v_~M~0_62, thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_6|} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_#t~post1, ~p~0, ~N~0][153], [Black: 368#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 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L294 olderBase$Statistics]: this new event has 23 ancestors and is cut-off event [2024-02-07 14:41:36,751 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-02-07 14:41:36,751 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-07 14:41:36,752 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-07 14:41:36,752 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([300] L80-->L83: Formula: (and (= (+ v_~L~0_14 1) v_~L~0_15) (= (+ v_~q~0_14 v_~M~0_14) v_~q~0_13)) InVars {~q~0=v_~q~0_14, ~M~0=v_~M~0_14, ~L~0=v_~L~0_15} OutVars{~q~0=v_~q~0_13, ~M~0=v_~M~0_14, thread3Thread1of1ForFork1_#t~post2=|v_thread3Thread1of1ForFork1_#t~post2_1|, ~L~0=v_~L~0_14} AuxVars[] AssignedVars[~L~0, ~q~0, thread3Thread1of1ForFork1_#t~post2][163], [Black: 368#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0))) (or (< 0 (mod ~L~0 4294967296)) (< (mod ~N~0 4294967296) 2)) (= ~p~0 0) (= ~q~0 0)), Black: 170#(or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))), Black: 378#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (< 0 (mod ~L~0 4294967296)) (< (mod ~N~0 4294967296) 2)) (= (mod ~q~0 4294967296) (mod ~p~0 4294967296))), 18#L99-4true, Black: 130#(and (= ~N~0 ~L~0) (= 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Black: 487#(and (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0))) (= ~N~0 ~L~0)), Black: 490#(and (= ~N~0 ~L~0) (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0)), 5#L45true, 140#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0)))), Black: 115#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (= ~N~0 ~L~0)), Black: 113#(not (= ~L~0 (* 4294967296 (div ~L~0 4294967296)))), Black: 110#(= ~N~0 ~L~0)]) [2024-02-07 14:41:36,752 INFO L294 olderBase$Statistics]: this new event has 23 ancestors and is cut-off event [2024-02-07 14:41:36,752 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-07 14:41:36,752 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-02-07 14:41:36,752 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-07 14:41:36,847 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([287] L45-->L50: Formula: (and (let ((.cse0 (mod v_~N~0_106 4294967296))) (or (and (= v_~N~0_106 v_~N~0_105) (= |v_thread1Thread1of1ForFork2_#t~post1_6| |v_thread1Thread1of1ForFork2_#t~post1_5|) (= v_~p~0_85 v_~p~0_86) (<= .cse0 0)) (and (not (= 0 .cse0)) (= v_~p~0_85 (+ v_~p~0_86 v_~M~0_62)) (<= 1 .cse0) (= v_~N~0_106 (+ v_~N~0_105 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Black: 487#(and (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0))) (= ~N~0 ~L~0)), Black: 490#(and (= ~N~0 ~L~0) (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0)), 34#L80true, Black: 115#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (= ~N~0 ~L~0)), Black: 110#(= ~N~0 ~L~0), Black: 108#true]) [2024-02-07 14:41:36,847 INFO L294 olderBase$Statistics]: this new event has 24 ancestors and is cut-off event [2024-02-07 14:41:36,848 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-02-07 14:41:36,848 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-07 14:41:36,848 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-07 14:41:36,848 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([300] L80-->L83: Formula: (and (= (+ v_~L~0_14 1) v_~L~0_15) (= (+ v_~q~0_14 v_~M~0_14) v_~q~0_13)) InVars {~q~0=v_~q~0_14, ~M~0=v_~M~0_14, ~L~0=v_~L~0_15} OutVars{~q~0=v_~q~0_13, ~M~0=v_~M~0_14, thread3Thread1of1ForFork1_#t~post2=|v_thread3Thread1of1ForFork1_#t~post2_1|, ~L~0=v_~L~0_14} AuxVars[] AssignedVars[~L~0, ~q~0, thread3Thread1of1ForFork1_#t~post2][163], [Black: 368#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0))) 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Black: 154#(and (or (and (= thread2Thread1of1ForFork0_~cond~1 0) (= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1))) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0))) (= thread1Thread1of1ForFork2_~cond~0 1)), Black: 408#(and (= ~N~0 ~L~0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 151#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0)))), Black: 410#(and (= ~N~0 ~L~0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 150#(or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))), Black: 417#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0)))), Black: 161#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0)))), Black: 164#(and (= thread2Thread1of1ForFork0_~cond~1 0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), 6#L100-1true, 484#true, 108#true, Black: 427#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1)), Black: 432#(and (= thread1Thread1of1ForFork2_~cond~0 1) (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0)), Black: 52#(and (= ~p~0 0) (= ~q~0 0)), Black: 429#(and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0)), Black: 57#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), Black: 451#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (or (< (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread2Thread1of1ForFork0_~cond~1 0)) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), 2#L83true, Black: 443#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), 494#true, Black: 75#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 74#(< (* (div ~N~0 4294967296) 4294967296) ~N~0), Black: 77#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 73#(or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0)), Black: 460#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 465#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (or (< (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread2Thread1of1ForFork0_~cond~1 0)) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 468#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), 448#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1) (or (< (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread2Thread1of1ForFork0_~cond~1 0))), Black: 85#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (= ~N~0 ~L~0) (< (* (div ~N~0 4294967296) 4294967296) ~N~0))), Black: 86#(and (or (< ~L~0 (+ (* 4294967296 (div ~L~0 4294967296)) 1)) (< 0 thread1Thread1of1ForFork2_~cond~0)) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 87#(and (<= 1 thread1Thread1of1ForFork2_~cond~0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), 82#true, Black: 89#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1)), Black: 479#(and (= ~N~0 ~L~0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 481#(and (= ~N~0 ~L~0) (= thread2Thread1of1ForFork0_~cond~1 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), 172#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1)), 457#(or (< (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread2Thread1of1ForFork0_~cond~1 0)), Black: 100#(and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 103#(and (= thread2Thread1of1ForFork0_~cond~1 0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 486#(= ~N~0 ~L~0), Black: 487#(and (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0))) (= ~N~0 ~L~0)), Black: 490#(and (= ~N~0 ~L~0) (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0)), 5#L45true, 140#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0)))), Black: 115#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (= ~N~0 ~L~0)), Black: 113#(not (= ~L~0 (* 4294967296 (div ~L~0 4294967296)))), Black: 110#(= ~N~0 ~L~0)]) [2024-02-07 14:41:36,848 INFO L294 olderBase$Statistics]: this new event has 24 ancestors and is cut-off event [2024-02-07 14:41:36,848 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-07 14:41:36,848 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-07 14:41:36,848 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-02-07 14:41:36,966 INFO L124 PetriNetUnfolderBase]: 12615/18984 cut-off events. [2024-02-07 14:41:36,966 INFO L125 PetriNetUnfolderBase]: For 247158/249442 co-relation queries the response was YES. [2024-02-07 14:41:37,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129874 conditions, 18984 events. 12615/18984 cut-off events. For 247158/249442 co-relation queries the response was YES. Maximal size of possible extension queue 1192. Compared 127988 event pairs, 1683 based on Foata normal form. 360/18819 useless extension candidates. Maximal degree in co-relation 129806. Up to 15033 conditions per place. [2024-02-07 14:41:37,166 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 380 selfloop transitions, 67 changer transitions 4/681 dead transitions. [2024-02-07 14:41:37,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 681 transitions, 13573 flow [2024-02-07 14:41:37,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:41:37,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:41:37,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-02-07 14:41:37,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5570175438596491 [2024-02-07 14:41:37,167 INFO L175 Difference]: Start difference. First operand has 178 places, 622 transitions, 11913 flow. Second operand 6 states and 127 transitions. [2024-02-07 14:41:37,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 681 transitions, 13573 flow [2024-02-07 14:41:38,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 681 transitions, 13464 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-02-07 14:41:38,855 INFO L231 Difference]: Finished difference. Result has 179 places, 627 transitions, 12162 flow [2024-02-07 14:41:38,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11693, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=560, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=12162, PETRI_PLACES=179, PETRI_TRANSITIONS=627} [2024-02-07 14:41:38,856 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 138 predicate places. [2024-02-07 14:41:38,856 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 627 transitions, 12162 flow [2024-02-07 14:41:38,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2024-02-07 14:41:38,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:41:38,856 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] [2024-02-07 14:41:38,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-02-07 14:41:38,857 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-02-07 14:41:38,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:41:38,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1617873975, now seen corresponding path program 1 times [2024-02-07 14:41:38,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:41:38,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168865351] [2024-02-07 14:41:38,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:41:38,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:41:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:41:39,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:41:39,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:41:39,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168865351] [2024-02-07 14:41:39,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168865351] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:41:39,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156531080] [2024-02-07 14:41:39,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:41:39,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:41:39,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:41:39,102 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 14:41:39,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-07 14:41:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:41:39,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-07 14:41:39,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:41:39,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:41:39,396 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:41:39,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:41:39,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156531080] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:41:39,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:41:39,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 15 [2024-02-07 14:41:39,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180752473] [2024-02-07 14:41:39,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:41:39,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-02-07 14:41:39,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:41:39,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-02-07 14:41:39,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-02-07 14:41:39,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-02-07 14:41:39,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 627 transitions, 12162 flow. Second operand has 16 states, 16 states have (on average 14.3125) internal successors, (229), 16 states have internal predecessors, (229), 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) [2024-02-07 14:41:39,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:41:39,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-02-07 14:41:39,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:41:42,969 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([287] L45-->L50: Formula: (and (let ((.cse0 (mod v_~N~0_106 4294967296))) (or (and (= v_~N~0_106 v_~N~0_105) (= |v_thread1Thread1of1ForFork2_#t~post1_6| |v_thread1Thread1of1ForFork2_#t~post1_5|) (= v_~p~0_85 v_~p~0_86) (<= .cse0 0)) (and (not (= 0 .cse0)) (= v_~p~0_85 (+ v_~p~0_86 v_~M~0_62)) (<= 1 .cse0) (= v_~N~0_106 (+ v_~N~0_105 1)) (< 0 .cse0)))) (<= (mod v_~N~0_105 4294967296) 4294967294)) InVars {~p~0=v_~p~0_86, ~N~0=v_~N~0_106, ~M~0=v_~M~0_62, thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_5|} OutVars{~p~0=v_~p~0_85, ~N~0=v_~N~0_105, ~M~0=v_~M~0_62, thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_6|} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_#t~post1, ~p~0, ~N~0][630], [Black: 368#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0))) (or (< 0 (mod ~L~0 4294967296)) (< (mod ~N~0 4294967296) 2)) (= ~p~0 0) (= ~q~0 0)), Black: 170#(or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))), Black: 378#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (< 0 (mod ~L~0 4294967296)) (< (mod ~N~0 4294967296) 2)) (= (mod ~q~0 4294967296) (mod ~p~0 4294967296))), 18#L99-4true, Black: 172#(and (<= (+ (* (div ~N~0 4294967296) 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thread1Thread1of1ForFork2_~cond~0) (or (< 0 (mod ~L~0 4294967296)) (and (= ~p~0 (+ (* 4294967296 (div ~p~0 4294967296)) (mod ~q~0 4294967296))) (<= (mod ~N~0 4294967296) 1))) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 364#(and (or (< 0 (mod ~L~0 4294967296)) (< (mod ~N~0 4294967296) 2)) (<= 1 thread1Thread1of1ForFork2_~cond~0) (= ~p~0 0) (= ~q~0 0) (<= (div thread1Thread1of1ForFork2_~cond~0 256) 0)), Black: 171#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0)))), Black: 382#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 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103#(and (= thread2Thread1of1ForFork0_~cond~1 0) (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))), Black: 486#(= ~N~0 ~L~0), Black: 487#(and (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0))) (= ~N~0 ~L~0)), Black: 490#(and (= ~N~0 ~L~0) (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0)), 34#L80true, Black: 497#(and (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0))) (= ~N~0 ~L~0)), Black: 500#(and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= ~N~0 ~L~0) (= thread2Thread1of1ForFork0_~cond~1 0)), Black: 115#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (= ~N~0 ~L~0)), Black: 110#(= ~N~0 ~L~0), Black: 108#true]) [2024-02-07 14:41:42,970 INFO L294 olderBase$Statistics]: this new event has 20 ancestors and is cut-off event [2024-02-07 14:41:42,970 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-02-07 14:41:42,970 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-02-07 14:41:42,970 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2024-02-07 14:41:43,894 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([287] L45-->L50: Formula: (and (let ((.cse0 (mod v_~N~0_106 4294967296))) (or (and (= v_~N~0_106 v_~N~0_105) (= |v_thread1Thread1of1ForFork2_#t~post1_6| |v_thread1Thread1of1ForFork2_#t~post1_5|) (= v_~p~0_85 v_~p~0_86) (<= .cse0 0)) (and (not (= 0 .cse0)) (= v_~p~0_85 (+ v_~p~0_86 v_~M~0_62)) (<= 1 .cse0) (= v_~N~0_106 (+ v_~N~0_105 1)) (< 0 .cse0)))) (<= (mod v_~N~0_105 4294967296) 4294967294)) InVars {~p~0=v_~p~0_86, ~N~0=v_~N~0_106, ~M~0=v_~M~0_62, thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_5|} OutVars{~p~0=v_~p~0_85, ~N~0=v_~N~0_105, ~M~0=v_~M~0_62, thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_6|} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_#t~post1, ~p~0, ~N~0][630], [Black: 368#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0))) (or (< 0 (mod ~L~0 4294967296)) (< (mod ~N~0 4294967296) 2)) (= ~p~0 0) (= ~q~0 0)), Black: 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490#(and (= ~N~0 ~L~0) (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0)), 34#L80true, Black: 497#(and (or (and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= thread2Thread1of1ForFork0_~cond~1 0)) (and (= thread2Thread1of1ForFork0_~cond~1 1) (<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0))) (= ~N~0 ~L~0)), Black: 115#(and (or (and (= thread1Thread1of1ForFork2_~cond~0 0) (<= ~N~0 (* (div ~N~0 4294967296) 4294967296))) (and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= thread1Thread1of1ForFork2_~cond~0 1))) (= ~N~0 ~L~0)), Black: 500#(and (<= ~N~0 (+ (* (div ~N~0 4294967296) 4294967296) 1)) (= ~N~0 ~L~0) (= thread2Thread1of1ForFork0_~cond~1 0)), Black: 110#(= ~N~0 ~L~0), Black: 108#true]) [2024-02-07 14:41:43,894 INFO L294 olderBase$Statistics]: this new event has 21 ancestors and is cut-off event [2024-02-07 14:41:43,894 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-02-07 14:41:43,894 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-02-07 14:41:43,895 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-02-07 14:41:45,577 INFO L124 PetriNetUnfolderBase]: 17842/27372 cut-off events. [2024-02-07 14:41:45,577 INFO L125 PetriNetUnfolderBase]: For 391013/394337 co-relation queries the response was YES. [2024-02-07 14:41:45,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196749 conditions, 27372 events. 17842/27372 cut-off events. For 391013/394337 co-relation queries the response was YES. Maximal size of possible extension queue 1668. Compared 199428 event pairs, 1011 based on Foata normal form. 784/27571 useless extension candidates. Maximal degree in co-relation 196682. Up to 14813 conditions per place. [2024-02-07 14:41:45,865 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 569 selfloop transitions, 752 changer transitions 6/1399 dead transitions. [2024-02-07 14:41:45,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 1399 transitions, 27334 flow [2024-02-07 14:41:45,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-02-07 14:41:45,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-02-07 14:41:45,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 413 transitions. [2024-02-07 14:41:45,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434210526315789 [2024-02-07 14:41:45,867 INFO L175 Difference]: Start difference. First operand has 179 places, 627 transitions, 12162 flow. Second operand 20 states and 413 transitions. [2024-02-07 14:41:45,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 1399 transitions, 27334 flow [2024-02-07 14:41:48,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 1399 transitions, 27190 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-02-07 14:41:48,935 INFO L231 Difference]: Finished difference. Result has 196 places, 1242 transitions, 26053 flow [2024-02-07 14:41:48,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12032, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=26053, PETRI_PLACES=196, PETRI_TRANSITIONS=1242} [2024-02-07 14:41:48,936 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 155 predicate places. [2024-02-07 14:41:48,936 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 1242 transitions, 26053 flow [2024-02-07 14:41:48,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.3125) internal successors, (229), 16 states have internal predecessors, (229), 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) [2024-02-07 14:41:48,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:41:48,936 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] [2024-02-07 14:41:48,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-02-07 14:41:49,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-02-07 14:41:49,140 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-02-07 14:41:49,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:41:49,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1240619633, now seen corresponding path program 2 times [2024-02-07 14:41:49,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:41:49,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674422834] [2024-02-07 14:41:49,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:41:49,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:41:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:41:49,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:41:49,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:41:49,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674422834] [2024-02-07 14:41:49,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674422834] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:41:49,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533118073] [2024-02-07 14:41:49,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-07 14:41:49,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:41:49,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:41:49,368 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 14:41:49,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-07 14:41:49,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-07 14:41:49,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 14:41:49,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-07 14:41:49,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:41:49,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:41:49,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:41:50,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:41:50,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533118073] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:41:50,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:41:50,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-02-07 14:41:50,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847124202] [2024-02-07 14:41:50,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:41:50,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-02-07 14:41:50,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:41:50,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-02-07 14:41:50,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-02-07 14:41:50,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-02-07 14:41:50,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 1242 transitions, 26053 flow. Second operand has 13 states, 13 states have (on average 14.923076923076923) internal successors, (194), 13 states have internal predecessors, (194), 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) [2024-02-07 14:41:50,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:41:50,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-02-07 14:41:50,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand