/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 00:00:15,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 00:00:15,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 00:00:15,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 00:00:15,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 00:00:15,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 00:00:15,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 00:00:15,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 00:00:15,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 00:00:15,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 00:00:15,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 00:00:15,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 00:00:15,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 00:00:15,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 00:00:15,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 00:00:15,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 00:00:15,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 00:00:15,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 00:00:15,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 00:00:15,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 00:00:15,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 00:00:15,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 00:00:15,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 00:00:15,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 00:00:15,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-12-06 00:00:15,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 00:00:15,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 00:00:15,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 00:00:15,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 00:00:15,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 00:00:15,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 00:00:15,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 00:00:15,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 00:00:15,993 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 00:00:15,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 00:00:15,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 00:00:15,995 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf [2022-12-06 00:00:16,025 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 00:00:16,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 00:00:16,027 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 00:00:16,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 00:00:16,027 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 00:00:16,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 00:00:16,028 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 00:00:16,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 00:00:16,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 00:00:16,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 00:00:16,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 00:00:16,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 00:00:16,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 00:00:16,029 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 00:00:16,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 00:00:16,029 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 00:00:16,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 00:00:16,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 00:00:16,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 00:00:16,030 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 00:00:16,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 00:00:16,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 00:00:16,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 00:00:16,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 00:00:16,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 00:00:16,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 00:00:16,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 00:00:16,031 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-06 00:00:16,031 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-06 00:00:16,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 00:00:16,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 00:00:16,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 00:00:16,372 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 00:00:16,372 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 00:00:16,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c [2022-12-06 00:00:17,470 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 00:00:17,690 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 00:00:17,691 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c [2022-12-06 00:00:17,696 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b67e7a77/c732d99780cd4444abc77c361461d14f/FLAG9e82f2c6c [2022-12-06 00:00:17,710 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b67e7a77/c732d99780cd4444abc77c361461d14f [2022-12-06 00:00:17,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 00:00:17,714 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 00:00:17,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 00:00:17,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 00:00:17,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 00:00:17,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 12:00:17" (1/1) ... [2022-12-06 00:00:17,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cba9565 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:00:17, skipping insertion in model container [2022-12-06 00:00:17,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 12:00:17" (1/1) ... [2022-12-06 00:00:17,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 00:00:17,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 00:00:17,875 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c[2135,2148] [2022-12-06 00:00:17,882 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 00:00:17,892 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 00:00:17,923 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c[2135,2148] [2022-12-06 00:00:17,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 00:00:17,941 INFO L208 MainTranslator]: Completed translation [2022-12-06 00:00:17,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:00:17 WrapperNode [2022-12-06 00:00:17,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 00:00:17,943 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 00:00:17,943 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 00:00:17,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 00:00:17,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:00:17" (1/1) ... [2022-12-06 00:00:17,964 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:00:17" (1/1) ... [2022-12-06 00:00:17,983 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2022-12-06 00:00:17,983 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 00:00:17,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 00:00:17,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 00:00:17,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 00:00:17,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:00:17" (1/1) ... [2022-12-06 00:00:17,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:00:17" (1/1) ... [2022-12-06 00:00:17,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:00:17" (1/1) ... [2022-12-06 00:00:17,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:00:17" (1/1) ... [2022-12-06 00:00:18,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:00:17" (1/1) ... [2022-12-06 00:00:18,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:00:17" (1/1) ... [2022-12-06 00:00:18,013 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:00:17" (1/1) ... [2022-12-06 00:00:18,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:00:17" (1/1) ... [2022-12-06 00:00:18,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 00:00:18,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 00:00:18,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 00:00:18,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 00:00:18,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:00:17" (1/1) ... [2022-12-06 00:00:18,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 00:00:18,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 00:00:18,050 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-06 00:00:18,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-06 00:00:18,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 00:00:18,082 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-06 00:00:18,083 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-06 00:00:18,084 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-06 00:00:18,084 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-06 00:00:18,084 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-06 00:00:18,084 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-06 00:00:18,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 00:00:18,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 00:00:18,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 00:00:18,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 00:00:18,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 00:00:18,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 00:00:18,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 00:00:18,086 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 00:00:18,179 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 00:00:18,180 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 00:00:18,386 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 00:00:18,394 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 00:00:18,394 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-06 00:00:18,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 12:00:18 BoogieIcfgContainer [2022-12-06 00:00:18,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 00:00:18,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 00:00:18,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 00:00:18,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 00:00:18,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 12:00:17" (1/3) ... [2022-12-06 00:00:18,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a5c61c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 12:00:18, skipping insertion in model container [2022-12-06 00:00:18,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:00:17" (2/3) ... [2022-12-06 00:00:18,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a5c61c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 12:00:18, skipping insertion in model container [2022-12-06 00:00:18,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 12:00:18" (3/3) ... [2022-12-06 00:00:18,409 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-flipped-dist.wvr.c [2022-12-06 00:00:18,422 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 00:00:18,422 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 00:00:18,422 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 00:00:18,499 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-06 00:00:18,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 102 transitions, 228 flow [2022-12-06 00:00:18,590 INFO L130 PetriNetUnfolder]: 7/99 cut-off events. [2022-12-06 00:00:18,590 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-06 00:00:18,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 99 events. 7/99 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2022-12-06 00:00:18,595 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 102 transitions, 228 flow [2022-12-06 00:00:18,598 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 89 transitions, 196 flow [2022-12-06 00:00:18,599 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 00:00:18,614 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 89 transitions, 196 flow [2022-12-06 00:00:18,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 89 transitions, 196 flow [2022-12-06 00:00:18,638 INFO L130 PetriNetUnfolder]: 7/89 cut-off events. [2022-12-06 00:00:18,638 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-06 00:00:18,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 89 events. 7/89 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2022-12-06 00:00:18,641 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 89 transitions, 196 flow [2022-12-06 00:00:18,641 INFO L188 LiptonReduction]: Number of co-enabled transitions 1320 [2022-12-06 00:00:21,072 INFO L203 LiptonReduction]: Total number of compositions: 67 [2022-12-06 00:00:21,090 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 00:00:21,097 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=REPEATED_LIPTON_PN, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@263d964a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 00:00:21,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-06 00:00:21,113 INFO L130 PetriNetUnfolder]: 3/21 cut-off events. [2022-12-06 00:00:21,114 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-06 00:00:21,114 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 00:00:21,115 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 00:00:21,115 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 00:00:21,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 00:00:21,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1611577722, now seen corresponding path program 1 times [2022-12-06 00:00:21,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 00:00:21,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876943425] [2022-12-06 00:00:21,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 00:00:21,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 00:00:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 00:00:21,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 00:00:21,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 00:00:21,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876943425] [2022-12-06 00:00:21,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876943425] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 00:00:21,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 00:00:21,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-06 00:00:21,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781060308] [2022-12-06 00:00:21,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 00:00:21,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 00:00:21,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 00:00:21,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 00:00:21,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-06 00:00:21,743 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2022-12-06 00:00:21,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2022-12-06 00:00:21,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 00:00:21,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2022-12-06 00:00:21,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 00:00:21,878 INFO L130 PetriNetUnfolder]: 359/506 cut-off events. [2022-12-06 00:00:21,879 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-12-06 00:00:21,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1064 conditions, 506 events. 359/506 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1608 event pairs, 39 based on Foata normal form. 1/305 useless extension candidates. Maximal degree in co-relation 803. Up to 421 conditions per place. [2022-12-06 00:00:21,886 INFO L137 encePairwiseOnDemand]: 17/22 looper letters, 30 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2022-12-06 00:00:21,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 179 flow [2022-12-06 00:00:21,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 00:00:21,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 00:00:21,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2022-12-06 00:00:21,897 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6818181818181818 [2022-12-06 00:00:21,899 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 62 flow. Second operand 3 states and 45 transitions. [2022-12-06 00:00:21,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 179 flow [2022-12-06 00:00:21,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 38 transitions, 157 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-06 00:00:21,905 INFO L231 Difference]: Finished difference. Result has 26 places, 25 transitions, 76 flow [2022-12-06 00:00:21,906 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=26, PETRI_TRANSITIONS=25} [2022-12-06 00:00:21,910 INFO L294 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2022-12-06 00:00:21,910 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 00:00:21,910 INFO L89 Accepts]: Start accepts. Operand has 26 places, 25 transitions, 76 flow [2022-12-06 00:00:21,913 INFO L95 Accepts]: Finished accepts. [2022-12-06 00:00:21,913 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 00:00:21,913 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 26 places, 25 transitions, 76 flow [2022-12-06 00:00:21,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 25 transitions, 76 flow [2022-12-06 00:00:21,924 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([269] thread3EXIT-->L78-2: Formula: (and (= v_thread3Thread1of1ForFork0_thidvar3_4 0) (= v_thread3Thread1of1ForFork0_thidvar1_4 0) (= v_thread3Thread1of1ForFork0_thidvar2_4 0) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem15#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread3Thread1of1ForFork0_thidvar0_4)) InVars {ULTIMATE.start_main_#t~mem15#1=|v_ULTIMATE.start_main_#t~mem15#1_5|, thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem15#1=|v_ULTIMATE.start_main_#t~mem15#1_5|, thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4} AuxVars[] AssignedVars[][23], [29#L78-2true, 108#true, Black: 110#(and (= ~x_2~0 0) (= ~x_3~0 0) (= ~x_1~0 0))]) [2022-12-06 00:00:21,925 INFO L382 tUnfolder$Statistics]: this new event has 19 ancestors and is not cut-off event [2022-12-06 00:00:21,925 INFO L385 tUnfolder$Statistics]: existing Event has 19 ancestors and is not cut-off event [2022-12-06 00:00:21,925 INFO L385 tUnfolder$Statistics]: existing Event has 20 ancestors and is not cut-off event [2022-12-06 00:00:21,925 INFO L385 tUnfolder$Statistics]: existing Event has 21 ancestors and is not cut-off event [2022-12-06 00:00:21,928 INFO L130 PetriNetUnfolder]: 22/62 cut-off events. [2022-12-06 00:00:21,928 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-06 00:00:21,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 62 events. 22/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 137 event pairs, 1 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 64. Up to 26 conditions per place. [2022-12-06 00:00:21,929 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 26 places, 25 transitions, 76 flow [2022-12-06 00:00:21,929 INFO L188 LiptonReduction]: Number of co-enabled transitions 192 [2022-12-06 00:00:21,929 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 00:00:21,931 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 21 [2022-12-06 00:00:21,932 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 76 flow [2022-12-06 00:00:21,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2022-12-06 00:00:21,932 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 00:00:21,932 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 00:00:21,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 00:00:21,935 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 00:00:21,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 00:00:21,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1373045353, now seen corresponding path program 1 times [2022-12-06 00:00:21,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 00:00:21,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798811778] [2022-12-06 00:00:21,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 00:00:21,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 00:00:21,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 00:00:22,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 00:00:22,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 00:00:22,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798811778] [2022-12-06 00:00:22,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798811778] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 00:00:22,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 00:00:22,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 00:00:22,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477583676] [2022-12-06 00:00:22,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 00:00:22,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 00:00:22,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 00:00:22,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 00:00:22,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-06 00:00:22,086 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 22 [2022-12-06 00:00:22,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2022-12-06 00:00:22,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 00:00:22,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 22 [2022-12-06 00:00:22,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 00:00:22,282 INFO L130 PetriNetUnfolder]: 486/764 cut-off events. [2022-12-06 00:00:22,283 INFO L131 PetriNetUnfolder]: For 188/188 co-relation queries the response was YES. [2022-12-06 00:00:22,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1805 conditions, 764 events. 486/764 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3147 event pairs, 137 based on Foata normal form. 68/816 useless extension candidates. Maximal degree in co-relation 420. Up to 391 conditions per place. [2022-12-06 00:00:22,288 INFO L137 encePairwiseOnDemand]: 16/22 looper letters, 54 selfloop transitions, 5 changer transitions 2/62 dead transitions. [2022-12-06 00:00:22,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 62 transitions, 298 flow [2022-12-06 00:00:22,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 00:00:22,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 00:00:22,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2022-12-06 00:00:22,291 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2022-12-06 00:00:22,291 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 76 flow. Second operand 5 states and 65 transitions. [2022-12-06 00:00:22,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 62 transitions, 298 flow [2022-12-06 00:00:22,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 62 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-06 00:00:22,293 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 119 flow [2022-12-06 00:00:22,293 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2022-12-06 00:00:22,294 INFO L294 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2022-12-06 00:00:22,294 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 00:00:22,294 INFO L89 Accepts]: Start accepts. Operand has 32 places, 28 transitions, 119 flow [2022-12-06 00:00:22,295 INFO L95 Accepts]: Finished accepts. [2022-12-06 00:00:22,295 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 00:00:22,296 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 28 transitions, 119 flow [2022-12-06 00:00:22,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 28 transitions, 119 flow [2022-12-06 00:00:22,304 INFO L130 PetriNetUnfolder]: 20/89 cut-off events. [2022-12-06 00:00:22,304 INFO L131 PetriNetUnfolder]: For 41/58 co-relation queries the response was YES. [2022-12-06 00:00:22,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 89 events. 20/89 cut-off events. For 41/58 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 321 event pairs, 2 based on Foata normal form. 1/82 useless extension candidates. Maximal degree in co-relation 128. Up to 26 conditions per place. [2022-12-06 00:00:22,305 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 28 transitions, 119 flow [2022-12-06 00:00:22,305 INFO L188 LiptonReduction]: Number of co-enabled transitions 224 [2022-12-06 00:00:22,407 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [348] $Ultimate##0-->thread2EXIT: Formula: (and (= |v_thread2Thread1of1ForFork2_#res.offset_13| 0) (= v_thread2Thread1of1ForFork2_~i~1_33 0) (not (< (mod v_thread2Thread1of1ForFork2_~i~1_33 4294967296) (mod v_~c~0_47 4294967296))) (= |v_thread2Thread1of1ForFork2_#res.base_13| 0)) InVars {~c~0=v_~c~0_47} OutVars{thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_33, thread2Thread1of1ForFork2_#res.base=|v_thread2Thread1of1ForFork2_#res.base_13|, ~c~0=v_~c~0_47, thread2Thread1of1ForFork2_#res.offset=|v_thread2Thread1of1ForFork2_#res.offset_13|} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_~i~1, thread2Thread1of1ForFork2_#res.base, thread2Thread1of1ForFork2_#res.offset] and [231] $Ultimate##0-->L42-5: Formula: (= v_thread1Thread1of1ForFork1_~i~0_1 0) InVars {} OutVars{thread1Thread1of1ForFork1_~i~0=v_thread1Thread1of1ForFork1_~i~0_1} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_~i~0] [2022-12-06 00:00:22,438 ERROR L799 SequenceRule]: Run adaptation not supported for post-scripts [2022-12-06 00:00:22,440 INFO L203 LiptonReduction]: Total number of compositions: 2 [2022-12-06 00:00:22,441 ERROR L123 eatedLiptonReduction]: Lipton reduction run adaptation of counterexample failed. [2022-12-06 00:00:22,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 00:00:22,441 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Lipton reduction run adaptation failed, and the cached counterexample word contains letters no longer in the reduced abstraction's alphabet! at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.CegarLoopForPetriNetWithRepeatedLiptonReduction.applyLargeBlockEncoding(CegarLoopForPetriNetWithRepeatedLiptonReduction.java:125) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.CegarLoopForPetriNetWithRepeatedLiptonReduction.refineAbstraction(CegarLoopForPetriNetWithRepeatedLiptonReduction.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-06 00:00:22,444 INFO L158 Benchmark]: Toolchain (without parser) took 4730.23ms. Allocated memory was 182.5MB in the beginning and 219.2MB in the end (delta: 36.7MB). Free memory was 158.5MB in the beginning and 188.2MB in the end (delta: -29.8MB). Peak memory consumption was 96.1MB. Max. memory is 8.0GB. [2022-12-06 00:00:22,444 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 127.9MB. Free memory is still 105.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 00:00:22,445 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.70ms. Allocated memory is still 182.5MB. Free memory was 158.1MB in the beginning and 147.3MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-12-06 00:00:22,445 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.96ms. Allocated memory is still 182.5MB. Free memory was 147.3MB in the beginning and 145.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 00:00:22,445 INFO L158 Benchmark]: Boogie Preprocessor took 31.57ms. Allocated memory is still 182.5MB. Free memory was 145.5MB in the beginning and 144.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-06 00:00:22,445 INFO L158 Benchmark]: RCFGBuilder took 380.38ms. Allocated memory is still 182.5MB. Free memory was 144.2MB in the beginning and 131.2MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-06 00:00:22,446 INFO L158 Benchmark]: TraceAbstraction took 4038.22ms. Allocated memory was 182.5MB in the beginning and 219.2MB in the end (delta: 36.7MB). Free memory was 160.6MB in the beginning and 188.2MB in the end (delta: -27.6MB). Peak memory consumption was 96.6MB. Max. memory is 8.0GB. [2022-12-06 00:00:22,447 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 127.9MB. Free memory is still 105.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 225.70ms. Allocated memory is still 182.5MB. Free memory was 158.1MB in the beginning and 147.3MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 39.96ms. Allocated memory is still 182.5MB. Free memory was 147.3MB in the beginning and 145.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.57ms. Allocated memory is still 182.5MB. Free memory was 145.5MB in the beginning and 144.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 380.38ms. Allocated memory is still 182.5MB. Free memory was 144.2MB in the beginning and 131.2MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 4038.22ms. Allocated memory was 182.5MB in the beginning and 219.2MB in the end (delta: 36.7MB). Free memory was 160.6MB in the beginning and 188.2MB in the end (delta: -27.6MB). Peak memory consumption was 96.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 92 PlacesBefore, 29 PlacesAfterwards, 89 TransitionsBefore, 22 TransitionsAfterwards, 1320 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 33 TrivialYvCompositions, 30 ConcurrentYvCompositions, 4 ChoiceCompositions, 67 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 683, independent: 683, independent conditional: 683, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 683, independent: 683, independent conditional: 0, independent unconditional: 683, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 683, independent: 683, independent conditional: 0, independent unconditional: 683, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 683, independent: 683, independent conditional: 0, independent unconditional: 683, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 683, independent: 683, independent conditional: 0, independent unconditional: 683, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 683, independent: 683, independent conditional: 0, independent unconditional: 683, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 683, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 683, unknown conditional: 0, unknown unconditional: 683] , Statistics on independence cache: Total cache size (in pairs): 1112, Positive cache size: 1112, Positive conditional cache size: 0, Positive unconditional cache size: 1112, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 26 PlacesBefore, 26 PlacesAfterwards, 25 TransitionsBefore, 25 TransitionsAfterwards, 192 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 32 PlacesBefore, 30 PlacesAfterwards, 28 TransitionsBefore, 26 TransitionsAfterwards, 224 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 47, independent: 47, independent conditional: 47, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 47, independent: 47, independent conditional: 6, independent unconditional: 41, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 47, independent: 47, independent conditional: 6, independent unconditional: 41, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 47, independent: 47, independent conditional: 6, independent unconditional: 41, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 21, independent: 21, independent conditional: 2, independent unconditional: 19, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 21, independent: 21, independent conditional: 0, independent unconditional: 21, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 47, independent: 26, independent conditional: 4, independent unconditional: 22, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 21, unknown conditional: 2, unknown unconditional: 19] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 21, Positive conditional cache size: 2, Positive unconditional cache size: 19, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 0 - ExceptionOrErrorResult: AssertionError: Lipton reduction run adaptation failed, and the cached counterexample word contains letters no longer in the reduced abstraction's alphabet! de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Lipton reduction run adaptation failed, and the cached counterexample word contains letters no longer in the reduced abstraction's alphabet!: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.CegarLoopForPetriNetWithRepeatedLiptonReduction.applyLargeBlockEncoding(CegarLoopForPetriNetWithRepeatedLiptonReduction.java:125) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-12-06 00:00:22,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...