/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/BuchiAutomizerCInline.xml -s ../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-semanticLbe.epf -i ../../../trunk/examples/svcomp/weaver/spaghetti.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-21b0908 [2022-07-22 12:25:54,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 12:25:54,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 12:25:54,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-07-22 12:25:54,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 12:25:54,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 12:25:54,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 12:25:54,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 12:25:54,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 12:25:54,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 12:25:54,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 12:25:54,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 12:25:54,287 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 12:25:54,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 12:25:54,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 12:25:54,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 12:25:54,300 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 12:25:54,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-07-22 12:25:54,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 12:25:54,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 12:25:54,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 12:25:54,353 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-semanticLbe.epf [2022-07-22 12:25:54,409 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 12:25:54,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 12:25:54,411 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 12:25:54,412 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 12:25:54,413 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 12:25:54,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 12:25:54,414 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 12:25:54,414 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-22 12:25:54,414 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-22 12:25:54,416 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-22 12:25:54,416 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-22 12:25:54,416 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-22 12:25:54,416 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-22 12:25:54,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 12:25:54,417 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 12:25:54,417 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-22 12:25:54,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 12:25:54,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 12:25:54,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 12:25:54,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-22 12:25:54,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-22 12:25:54,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-22 12:25:54,419 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 12:25:54,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 12:25:54,420 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-22 12:25:54,420 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 12:25:54,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-22 12:25:54,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 12:25:54,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 12:25:54,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 12:25:54,422 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 12:25:54,424 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-22 12:25:54,424 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-07-22 12:25:54,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 12:25:54,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 12:25:54,931 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 12:25:54,932 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 12:25:54,934 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 12:25:54,936 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/spaghetti.wvr.c [2022-07-22 12:25:55,027 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a39c3879/27927893cfb1419fa1190cd801525be6/FLAG2467e5b28 [2022-07-22 12:25:55,690 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 12:25:55,690 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/spaghetti.wvr.c [2022-07-22 12:25:55,699 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a39c3879/27927893cfb1419fa1190cd801525be6/FLAG2467e5b28 [2022-07-22 12:25:56,056 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a39c3879/27927893cfb1419fa1190cd801525be6 [2022-07-22 12:25:56,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 12:25:56,065 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-07-22 12:25:56,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 12:25:56,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 12:25:56,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 12:25:56,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:25:56" (1/1) ... [2022-07-22 12:25:56,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a1c10d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:25:56, skipping insertion in model container [2022-07-22 12:25:56,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:25:56" (1/1) ... [2022-07-22 12:25:56,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 12:25:56,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 12:25:56,321 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/spaghetti.wvr.c[3221,3234] [2022-07-22 12:25:56,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 12:25:56,333 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 12:25:56,398 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/spaghetti.wvr.c[3221,3234] [2022-07-22 12:25:56,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 12:25:56,422 INFO L208 MainTranslator]: Completed translation [2022-07-22 12:25:56,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:25:56 WrapperNode [2022-07-22 12:25:56,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 12:25:56,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 12:25:56,425 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 12:25:56,425 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 12:25:56,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:25:56" (1/1) ... [2022-07-22 12:25:56,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:25:56" (1/1) ... [2022-07-22 12:25:56,468 INFO L137 Inliner]: procedures = 23, calls = 59, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 78 [2022-07-22 12:25:56,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 12:25:56,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 12:25:56,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 12:25:56,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 12:25:56,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:25:56" (1/1) ... [2022-07-22 12:25:56,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:25:56" (1/1) ... [2022-07-22 12:25:56,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:25:56" (1/1) ... [2022-07-22 12:25:56,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:25:56" (1/1) ... [2022-07-22 12:25:56,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:25:56" (1/1) ... [2022-07-22 12:25:56,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:25:56" (1/1) ... [2022-07-22 12:25:56,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:25:56" (1/1) ... [2022-07-22 12:25:56,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 12:25:56,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 12:25:56,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 12:25:56,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 12:25:56,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:25:56" (1/1) ... [2022-07-22 12:25:56,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 12:25:56,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:25:56,566 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 12:25:56,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-07-22 12:25:56,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 12:25:56,658 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-22 12:25:56,658 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-22 12:25:56,659 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-22 12:25:56,659 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-22 12:25:56,660 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-22 12:25:56,661 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-22 12:25:56,661 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-22 12:25:56,661 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-22 12:25:56,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 12:25:56,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 12:25:56,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 12:25:56,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-22 12:25:56,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-22 12:25:56,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 12:25:56,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 12:25:56,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 12:25:56,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 12:25:56,669 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 12:25:56,806 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 12:25:56,809 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 12:25:57,251 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 12:25:57,270 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 12:25:57,271 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-22 12:25:57,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:25:57 BoogieIcfgContainer [2022-07-22 12:25:57,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 12:25:57,276 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-22 12:25:57,276 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-22 12:25:57,282 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-22 12:25:57,283 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 12:25:57,283 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.07 12:25:56" (1/3) ... [2022-07-22 12:25:57,284 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d13a55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.07 12:25:57, skipping insertion in model container [2022-07-22 12:25:57,285 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 12:25:57,285 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:25:56" (2/3) ... [2022-07-22 12:25:57,285 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d13a55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.07 12:25:57, skipping insertion in model container [2022-07-22 12:25:57,285 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 12:25:57,285 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:25:57" (3/3) ... [2022-07-22 12:25:57,287 INFO L322 chiAutomizerObserver]: Analyzing ICFG spaghetti.wvr.c [2022-07-22 12:25:57,418 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-07-22 12:25:57,481 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 129 places, 129 transitions, 290 flow [2022-07-22 12:25:57,600 INFO L129 PetriNetUnfolder]: 9/121 cut-off events. [2022-07-22 12:25:57,600 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-22 12:25:57,607 INFO L84 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 121 events. 9/121 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 112 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2022-07-22 12:25:57,607 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 129 transitions, 290 flow [2022-07-22 12:25:57,622 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 121 transitions, 266 flow [2022-07-22 12:25:57,627 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-22 12:25:57,652 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 125 places, 121 transitions, 266 flow [2022-07-22 12:25:57,656 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 125 places, 121 transitions, 266 flow [2022-07-22 12:25:57,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 125 places, 121 transitions, 266 flow [2022-07-22 12:25:57,720 INFO L129 PetriNetUnfolder]: 9/121 cut-off events. [2022-07-22 12:25:57,721 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-22 12:25:57,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 121 events. 9/121 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 110 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2022-07-22 12:25:57,729 INFO L116 LiptonReduction]: Number of co-enabled transitions 2714 [2022-07-22 12:26:01,852 INFO L131 LiptonReduction]: Checked pairs total: 3642 [2022-07-22 12:26:01,852 INFO L133 LiptonReduction]: Total number of compositions: 106 [2022-07-22 12:26:01,878 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2022-07-22 12:26:01,878 INFO L301 stractBuchiCegarLoop]: Hoare is false [2022-07-22 12:26:01,878 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-22 12:26:01,878 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-22 12:26:01,879 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-22 12:26:01,879 INFO L305 stractBuchiCegarLoop]: Difference is false [2022-07-22 12:26:01,879 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-22 12:26:01,879 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-22 12:26:01,882 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2022-07-22 12:26:02,010 INFO L131 ngComponentsAnalysis]: Automaton has 74 accepting balls. 304 [2022-07-22 12:26:02,010 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 12:26:02,010 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 12:26:02,016 INFO L150 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-22 12:26:02,017 INFO L151 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-22 12:26:02,017 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-22 12:26:02,017 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 321 states, but on-demand construction may add more states [2022-07-22 12:26:02,037 INFO L131 ngComponentsAnalysis]: Automaton has 74 accepting balls. 304 [2022-07-22 12:26:02,037 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 12:26:02,037 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 12:26:02,038 INFO L150 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-22 12:26:02,038 INFO L151 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-22 12:26:02,044 INFO L748 eck$LassoCheckResult]: Stem: 132#[ULTIMATE.startENTRY]don't care [447] ULTIMATE.startENTRY-->L117-3: Formula: (let ((.cse2 (store |v_#valid_153| |v_ULTIMATE.start_main_~#t1~0#1.base_53| 1))) (let ((.cse3 (store .cse2 |v_ULTIMATE.start_main_~#t2~0#1.base_55| 1))) (let ((.cse0 (store .cse3 |v_ULTIMATE.start_main_~#t3~0#1.base_53| 1)) (.cse1 (select |v_#memory_int_70| 1))) (and (= (store |v_#memory_int_70| |v_ULTIMATE.start_main_~#t1~0#1.base_53| (store (select |v_#memory_int_70| |v_ULTIMATE.start_main_~#t1~0#1.base_53|) |v_ULTIMATE.start_main_~#t1~0#1.offset_45| |v_ULTIMATE.start_main_#t~pre9#1_31|)) |v_#memory_int_69|) (= |v_ULTIMATE.start_main_~#t1~0#1.offset_45| 0) (= |v_#NULL.offset_6| 0) (= (select |v_#valid_153| 2) 1) (= (select |v_#valid_153| 1) 1) (= |v_ULTIMATE.start_main_#t~pre9#1_31| |v_#pthreadsForks_68|) (= (select .cse0 |v_ULTIMATE.start_main_~#t4~0#1.base_53|) 0) (= |v_#NULL.base_6| 0) (= (store (store (store (store |v_#length_90| |v_ULTIMATE.start_main_~#t1~0#1.base_53| 4) |v_ULTIMATE.start_main_~#t2~0#1.base_55| 4) |v_ULTIMATE.start_main_~#t3~0#1.base_53| 4) |v_ULTIMATE.start_main_~#t4~0#1.base_53| 4) |v_#length_89|) (= 2 (select |v_#length_90| 1)) (= (select .cse1 1) 0) (= (select |v_#valid_153| |v_ULTIMATE.start_main_~#t1~0#1.base_53|) 0) (= |v_ULTIMATE.start_main_~#t3~0#1.offset_45| 0) (= 16 (select |v_#length_90| 2)) (< |v_#StackHeapBarrier_26| |v_ULTIMATE.start_main_~#t3~0#1.base_53|) (< |v_#StackHeapBarrier_26| |v_ULTIMATE.start_main_~#t4~0#1.base_53|) (< |v_#StackHeapBarrier_26| |v_ULTIMATE.start_main_~#t2~0#1.base_55|) (= (select .cse2 |v_ULTIMATE.start_main_~#t2~0#1.base_55|) 0) (< |v_#StackHeapBarrier_26| |v_ULTIMATE.start_main_~#t1~0#1.base_53|) (= |v_ULTIMATE.start_main_~#t2~0#1.offset_47| 0) (= |v_#valid_152| (store .cse0 |v_ULTIMATE.start_main_~#t4~0#1.base_53| 1)) (= (select |v_#valid_153| 0) 0) (< 0 |v_#StackHeapBarrier_26|) (= 0 |v_ULTIMATE.start_main_~#t4~0#1.offset_45|) (= (select .cse1 0) 48) (= |v_#pthreadsForks_67| (+ |v_#pthreadsForks_68| 1)) (= (select .cse3 |v_ULTIMATE.start_main_~#t3~0#1.base_53|) 0))))) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_26|, #pthreadsForks=|v_#pthreadsForks_68|, #valid=|v_#valid_153|, #memory_int=|v_#memory_int_70|, #length=|v_#length_90|} OutVars{ULTIMATE.start_main_#t~pre13#1=|v_ULTIMATE.start_main_#t~pre13#1_27|, ULTIMATE.start_main_#t~pre9#1=|v_ULTIMATE.start_main_#t~pre9#1_31|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_47|, ULTIMATE.start_main_~#t3~0#1.offset=|v_ULTIMATE.start_main_~#t3~0#1.offset_45|, ULTIMATE.start_main_#t~mem18#1=|v_ULTIMATE.start_main_#t~mem18#1_18|, ULTIMATE.start_main_~#t3~0#1.base=|v_ULTIMATE.start_main_~#t3~0#1.base_53|, #NULL.offset=|v_#NULL.offset_6|, ~x_1~0=v_~x_1~0_203, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_45|, ULTIMATE.start_main_#t~nondet12#1=|v_ULTIMATE.start_main_#t~nondet12#1_17|, #pthreadsForks=|v_#pthreadsForks_67|, ULTIMATE.start_main_#t~mem17#1=|v_ULTIMATE.start_main_#t~mem17#1_20|, #length=|v_#length_89|, ULTIMATE.start_main_~#t4~0#1.base=|v_ULTIMATE.start_main_~#t4~0#1.base_53|, ULTIMATE.start_main_#t~nondet10#1=|v_ULTIMATE.start_main_#t~nondet10#1_17|, ULTIMATE.start_main_#t~pre11#1=|v_ULTIMATE.start_main_#t~pre11#1_25|, ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_38|, ULTIMATE.start_main_#t~pre15#1=|v_ULTIMATE.start_main_#t~pre15#1_23|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_53|, ~x_0~0=v_~x_0~0_205, #NULL.base=|v_#NULL.base_6|, ULTIMATE.start_main_#t~nondet14#1=|v_ULTIMATE.start_main_#t~nondet14#1_15|, ULTIMATE.start_main_#t~mem19#1=|v_ULTIMATE.start_main_#t~mem19#1_18|, ULTIMATE.start_main_#t~mem20#1=|v_ULTIMATE.start_main_#t~mem20#1_26|, ULTIMATE.start_main_#t~nondet16#1=|v_ULTIMATE.start_main_#t~nondet16#1_15|, #StackHeapBarrier=|v_#StackHeapBarrier_26|, ULTIMATE.start_main_#t~nondet8#1=|v_ULTIMATE.start_main_#t~nondet8#1_30|, #valid=|v_#valid_152|, ULTIMATE.start_main_#t~nondet7#1=|v_ULTIMATE.start_main_#t~nondet7#1_26|, #memory_int=|v_#memory_int_69|, ULTIMATE.start_main_~#t4~0#1.offset=|v_ULTIMATE.start_main_~#t4~0#1.offset_45|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_55|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~pre13#1, ULTIMATE.start_main_#t~pre9#1, ULTIMATE.start_main_~#t2~0#1.offset, ULTIMATE.start_main_~#t3~0#1.offset, ULTIMATE.start_main_#t~mem18#1, ULTIMATE.start_main_~#t3~0#1.base, #NULL.offset, ~x_1~0, ULTIMATE.start_main_~#t1~0#1.offset, ULTIMATE.start_main_#t~nondet12#1, #pthreadsForks, ULTIMATE.start_main_#t~mem17#1, #length, ULTIMATE.start_main_~#t4~0#1.base, ULTIMATE.start_main_#t~nondet10#1, ULTIMATE.start_main_#t~pre11#1, ULTIMATE.start_main_#res#1, ULTIMATE.start_main_#t~pre15#1, ULTIMATE.start_main_~#t1~0#1.base, ~x_0~0, #NULL.base, ULTIMATE.start_main_#t~nondet14#1, ULTIMATE.start_main_#t~mem19#1, ULTIMATE.start_main_#t~mem20#1, ULTIMATE.start_main_#t~nondet16#1, ULTIMATE.start_main_#t~nondet8#1, #valid, ULTIMATE.start_main_#t~nondet7#1, #memory_int, ULTIMATE.start_main_~#t4~0#1.offset, ULTIMATE.start_main_~#t2~0#1.base] 135#[L117-3]don't care [331] L117-3-->L51: Formula: (and (= |v_ULTIMATE.start_main_#t~pre9#1_6| v_thread1Thread1of1ForFork1_thidvar0_2) (= 0 v_thread1Thread1of1ForFork1_thidvar1_2)) InVars {ULTIMATE.start_main_#t~pre9#1=|v_ULTIMATE.start_main_#t~pre9#1_6|} OutVars{thread1Thread1of1ForFork1_#t~nondet2=|v_thread1Thread1of1ForFork1_#t~nondet2_4|, thread1Thread1of1ForFork1_#res.base=|v_thread1Thread1of1ForFork1_#res.base_4|, thread1Thread1of1ForFork1_#t~nondet1=|v_thread1Thread1of1ForFork1_#t~nondet1_10|, ULTIMATE.start_main_#t~pre9#1=|v_ULTIMATE.start_main_#t~pre9#1_6|, thread1Thread1of1ForFork1_#res.offset=|v_thread1Thread1of1ForFork1_#res.offset_4|, thread1Thread1of1ForFork1_thidvar1=v_thread1Thread1of1ForFork1_thidvar1_2, thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_#t~nondet2, thread1Thread1of1ForFork1_#res.base, thread1Thread1of1ForFork1_#t~nondet1, thread1Thread1of1ForFork1_#res.offset, thread1Thread1of1ForFork1_thidvar1, thread1Thread1of1ForFork1_thidvar0] 137#[L51, L117-4]don't care [2022-07-22 12:26:02,045 INFO L750 eck$LassoCheckResult]: Loop: 137#[L51, L117-4]don't care [392] L51-->L45: Formula: (and (not (= (mod |v_thread1Thread1of1ForFork1_#t~nondet1_18| 256) 0)) (= |v_thread1Thread1of1ForFork1_#t~nondet2_14| v_~x_0~0_79)) InVars {thread1Thread1of1ForFork1_#t~nondet2=|v_thread1Thread1of1ForFork1_#t~nondet2_14|, thread1Thread1of1ForFork1_#t~nondet1=|v_thread1Thread1of1ForFork1_#t~nondet1_18|} OutVars{~x_0~0=v_~x_0~0_79} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_#t~nondet2, thread1Thread1of1ForFork1_#t~nondet1, ~x_0~0] 141#[L45, L117-4]don't care [371] L45-->L51: Formula: (= v_~x_0~0_51 (+ (* v_~x_0~0_53 2) 6)) InVars {~x_0~0=v_~x_0~0_53} OutVars{~x_0~0=v_~x_0~0_51} AuxVars[] AssignedVars[~x_0~0] 137#[L51, L117-4]don't care [2022-07-22 12:26:02,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:26:02,052 INFO L85 PathProgramCache]: Analyzing trace with hash 15149, now seen corresponding path program 1 times [2022-07-22 12:26:02,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:26:02,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490627694] [2022-07-22 12:26:02,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:26:02,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:26:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 12:26:02,211 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 12:26:02,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 12:26:02,289 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 12:26:02,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:26:02,294 INFO L85 PathProgramCache]: Analyzing trace with hash 13484, now seen corresponding path program 1 times [2022-07-22 12:26:02,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:26:02,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191577814] [2022-07-22 12:26:02,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:26:02,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:26:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 12:26:02,327 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 12:26:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 12:26:02,347 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 12:26:02,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:26:02,350 INFO L85 PathProgramCache]: Analyzing trace with hash 14570712, now seen corresponding path program 1 times [2022-07-22 12:26:02,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:26:02,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832138346] [2022-07-22 12:26:02,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:26:02,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:26:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 12:26:02,417 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 12:26:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 12:26:02,461 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 12:26:03,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.07 12:26:03 BoogieIcfgContainer [2022-07-22 12:26:03,265 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-22 12:26:03,269 INFO L158 Benchmark]: Toolchain (without parser) took 7205.04ms. Allocated memory was 156.2MB in the beginning and 199.2MB in the end (delta: 43.0MB). Free memory was 130.5MB in the beginning and 161.6MB in the end (delta: -31.1MB). Peak memory consumption was 109.4MB. Max. memory is 8.0GB. [2022-07-22 12:26:03,270 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 156.2MB. Free memory is still 129.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-07-22 12:26:03,273 INFO L158 Benchmark]: CACSL2BoogieTranslator took 355.28ms. Allocated memory is still 156.2MB. Free memory was 130.1MB in the beginning and 119.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-07-22 12:26:03,274 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.85ms. Allocated memory is still 156.2MB. Free memory was 119.2MB in the beginning and 117.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-07-22 12:26:03,276 INFO L158 Benchmark]: Boogie Preprocessor took 36.47ms. Allocated memory is still 156.2MB. Free memory was 117.6MB in the beginning and 116.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-07-22 12:26:03,279 INFO L158 Benchmark]: RCFGBuilder took 767.69ms. Allocated memory is still 156.2MB. Free memory was 116.1MB in the beginning and 101.8MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-07-22 12:26:03,288 INFO L158 Benchmark]: BuchiAutomizer took 5988.82ms. Allocated memory was 156.2MB in the beginning and 199.2MB in the end (delta: 43.0MB). Free memory was 101.5MB in the beginning and 161.6MB in the end (delta: -60.1MB). Peak memory consumption was 80.1MB. Max. memory is 8.0GB. [2022-07-22 12:26:03,297 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 156.2MB. Free memory is still 129.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 355.28ms. Allocated memory is still 156.2MB. Free memory was 130.1MB in the beginning and 119.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 43.85ms. Allocated memory is still 156.2MB. Free memory was 119.2MB in the beginning and 117.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.47ms. Allocated memory is still 156.2MB. Free memory was 117.6MB in the beginning and 116.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 767.69ms. Allocated memory is still 156.2MB. Free memory was 116.1MB in the beginning and 101.8MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * BuchiAutomizer took 5988.82ms. Allocated memory was 156.2MB in the beginning and 199.2MB in the end (delta: 43.0MB). Free memory was 101.5MB in the beginning and 161.6MB in the end (delta: -60.1MB). Peak memory consumption was 80.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.7s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 4.4s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 42]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {\result=0, \result={0:0}, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@18069cfa=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@18d25e80=511, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2a2ddec6 in0,0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@451fe875 in0,0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4f980692 in0,10380, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4fc85422 in0,0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@56ea2252=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@e85d439=-3, org.eclipse.cdt.internal.core.dom.parser.c.CASTIdExpression@5227a308=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTIdExpression@75f1e8f4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTIdExpression@798f891a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTIdExpression@7a92ab8d=0, t1={3:0}, t2={1136:0}, t3={1138:0}, t4={1137:0}, x_0=0, x_1=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 42]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L38] 0 unsigned int x_0, x_1; [L112] 0 pthread_t t1, t2, t3, t4; [L114] 0 x_0 = __VERIFIER_nondet_uint() [L115] 0 x_1 = __VERIFIER_nondet_uint() [L117] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) Loop: [L42] COND TRUE __VERIFIER_nondet_bool() [L44] x_0 = __VERIFIER_nondet_uint() [L47] x_0 = x_0 + 3 [L50] x_0 = 2 * x_0 End of lasso representation. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.2s, 125 PlacesBefore, 38 PlacesAfterwards, 121 TransitionsBefore, 29 TransitionsAfterwards, 2714 CoEnabledTransitionPairs, 6 FixpointIterations, 44 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 12 ConcurrentYvCompositions, 5 ChoiceCompositions, 106 TotalNumberOfCompositions, 3642 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2795, positive: 2737, positive conditional: 0, positive unconditional: 2737, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1999, positive: 1981, positive conditional: 0, positive unconditional: 1981, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1999, positive: 1946, positive conditional: 0, positive unconditional: 1946, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 53, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 104, positive: 53, positive conditional: 0, positive unconditional: 53, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2795, positive: 756, positive conditional: 0, positive unconditional: 756, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 1999, unknown conditional: 0, unknown unconditional: 1999] , Statistics on independence cache: Total cache size (in pairs): 137, Positive cache size: 128, Positive conditional cache size: 0, Positive unconditional cache size: 128, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 RESULT: Ultimate proved your program to be incorrect! [2022-07-22 12:26:03,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...