/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/popl20-nonblocking-cntr.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-0d686a6 [2022-07-26 13:56:39,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-26 13:56:39,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-26 13:56:39,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-07-26 13:56:39,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-26 13:56:39,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-26 13:56:39,087 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-26 13:56:39,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-26 13:56:39,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-26 13:56:39,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-26 13:56:39,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-26 13:56:39,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-26 13:56:39,094 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-26 13:56:39,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-26 13:56:39,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-26 13:56:39,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-26 13:56:39,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-26 13:56:39,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-07-26 13:56:39,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-26 13:56:39,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-26 13:56:39,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-26 13:56:39,104 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-semanticLbe.epf [2022-07-26 13:56:39,123 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-26 13:56:39,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-26 13:56:39,124 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-26 13:56:39,124 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-26 13:56:39,125 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-26 13:56:39,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-26 13:56:39,125 INFO L138 SettingsManager]: * Use SBE=true [2022-07-26 13:56:39,125 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-26 13:56:39,125 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-26 13:56:39,125 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-26 13:56:39,126 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-26 13:56:39,126 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-26 13:56:39,126 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-26 13:56:39,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-26 13:56:39,127 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-26 13:56:39,127 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-26 13:56:39,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-26 13:56:39,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-26 13:56:39,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-26 13:56:39,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-26 13:56:39,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-26 13:56:39,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-26 13:56:39,127 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-26 13:56:39,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-26 13:56:39,127 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-26 13:56:39,128 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-26 13:56:39,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-26 13:56:39,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-26 13:56:39,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-26 13:56:39,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-26 13:56:39,128 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-26 13:56:39,129 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-26 13:56:39,129 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-07-26 13:56:39,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-26 13:56:39,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-26 13:56:39,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-26 13:56:39,337 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-26 13:56:39,337 INFO L275 PluginConnector]: CDTParser initialized [2022-07-26 13:56:39,338 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2022-07-26 13:56:39,391 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b47082580/1840e439d73d4ed6aee11374963050ba/FLAG183c10c0c [2022-07-26 13:56:39,734 INFO L306 CDTParser]: Found 1 translation units. [2022-07-26 13:56:39,734 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2022-07-26 13:56:39,740 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b47082580/1840e439d73d4ed6aee11374963050ba/FLAG183c10c0c [2022-07-26 13:56:39,756 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b47082580/1840e439d73d4ed6aee11374963050ba [2022-07-26 13:56:39,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-26 13:56:39,761 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-07-26 13:56:39,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-26 13:56:39,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-26 13:56:39,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-26 13:56:39,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.07 01:56:39" (1/1) ... [2022-07-26 13:56:39,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dcdde14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:56:39, skipping insertion in model container [2022-07-26 13:56:39,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.07 01:56:39" (1/1) ... [2022-07-26 13:56:39,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-26 13:56:39,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-26 13:56:39,974 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/popl20-nonblocking-cntr.wvr.c[2037,2050] [2022-07-26 13:56:39,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-26 13:56:39,981 INFO L203 MainTranslator]: Completed pre-run [2022-07-26 13:56:40,003 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/popl20-nonblocking-cntr.wvr.c[2037,2050] [2022-07-26 13:56:40,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-26 13:56:40,015 INFO L208 MainTranslator]: Completed translation [2022-07-26 13:56:40,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:56:40 WrapperNode [2022-07-26 13:56:40,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-26 13:56:40,016 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-26 13:56:40,017 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-26 13:56:40,017 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-26 13:56:40,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:56:40" (1/1) ... [2022-07-26 13:56:40,032 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:56:40" (1/1) ... [2022-07-26 13:56:40,048 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 52 [2022-07-26 13:56:40,048 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-26 13:56:40,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-26 13:56:40,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-26 13:56:40,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-26 13:56:40,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:56:40" (1/1) ... [2022-07-26 13:56:40,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:56:40" (1/1) ... [2022-07-26 13:56:40,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:56:40" (1/1) ... [2022-07-26 13:56:40,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:56:40" (1/1) ... [2022-07-26 13:56:40,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:56:40" (1/1) ... [2022-07-26 13:56:40,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:56:40" (1/1) ... [2022-07-26 13:56:40,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:56:40" (1/1) ... [2022-07-26 13:56:40,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-26 13:56:40,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-26 13:56:40,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-26 13:56:40,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-26 13:56:40,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:56:40" (1/1) ... [2022-07-26 13:56:40,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-26 13:56:40,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-26 13:56:40,103 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) [2022-07-26 13:56:40,111 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 [2022-07-26 13:56:40,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-26 13:56:40,152 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-26 13:56:40,152 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-26 13:56:40,152 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-26 13:56:40,152 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-26 13:56:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-26 13:56:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-26 13:56:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-26 13:56:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-26 13:56:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-26 13:56:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-26 13:56:40,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-26 13:56:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-26 13:56:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-26 13:56:40,154 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-26 13:56:40,202 INFO L234 CfgBuilder]: Building ICFG [2022-07-26 13:56:40,203 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-26 13:56:40,375 INFO L275 CfgBuilder]: Performing block encoding [2022-07-26 13:56:40,398 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-26 13:56:40,398 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-26 13:56:40,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.07 01:56:40 BoogieIcfgContainer [2022-07-26 13:56:40,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-26 13:56:40,400 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-26 13:56:40,400 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-26 13:56:40,404 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-26 13:56:40,405 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-26 13:56:40,405 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.07 01:56:39" (1/3) ... [2022-07-26 13:56:40,405 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4a7911e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.07 01:56:40, skipping insertion in model container [2022-07-26 13:56:40,405 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-26 13:56:40,406 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:56:40" (2/3) ... [2022-07-26 13:56:40,406 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4a7911e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.07 01:56:40, skipping insertion in model container [2022-07-26 13:56:40,406 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-26 13:56:40,406 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.07 01:56:40" (3/3) ... [2022-07-26 13:56:40,407 INFO L322 chiAutomizerObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2022-07-26 13:56:40,473 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-26 13:56:40,517 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 82 transitions, 180 flow [2022-07-26 13:56:40,556 INFO L129 PetriNetUnfolder]: 6/78 cut-off events. [2022-07-26 13:56:40,557 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-26 13:56:40,559 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 78 events. 6/78 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-07-26 13:56:40,559 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 82 transitions, 180 flow [2022-07-26 13:56:40,566 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 78 transitions, 168 flow [2022-07-26 13:56:40,569 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-26 13:56:40,578 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 78 transitions, 168 flow [2022-07-26 13:56:40,582 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 78 transitions, 168 flow [2022-07-26 13:56:40,583 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 79 places, 78 transitions, 168 flow [2022-07-26 13:56:40,611 INFO L129 PetriNetUnfolder]: 6/78 cut-off events. [2022-07-26 13:56:40,611 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-26 13:56:40,612 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 78 events. 6/78 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 42 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-07-26 13:56:40,614 INFO L116 LiptonReduction]: Number of co-enabled transitions 404 [2022-07-26 13:56:42,252 INFO L131 LiptonReduction]: Checked pairs total: 414 [2022-07-26 13:56:42,253 INFO L133 LiptonReduction]: Total number of compositions: 75 [2022-07-26 13:56:42,265 INFO L301 stractBuchiCegarLoop]: Interprodecural is true [2022-07-26 13:56:42,265 INFO L302 stractBuchiCegarLoop]: Hoare is false [2022-07-26 13:56:42,265 INFO L303 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-26 13:56:42,265 INFO L304 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-26 13:56:42,265 INFO L305 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-26 13:56:42,265 INFO L306 stractBuchiCegarLoop]: Difference is false [2022-07-26 13:56:42,265 INFO L307 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-26 13:56:42,265 INFO L311 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-26 13:56:42,266 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2022-07-26 13:56:42,296 INFO L131 ngComponentsAnalysis]: Automaton has 14 accepting balls. 14 [2022-07-26 13:56:42,297 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-26 13:56:42,297 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-26 13:56:42,300 INFO L150 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-26 13:56:42,300 INFO L151 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-26 13:56:42,300 INFO L333 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-26 13:56:42,300 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 33 states, but on-demand construction may add more states [2022-07-26 13:56:42,302 INFO L131 ngComponentsAnalysis]: Automaton has 14 accepting balls. 14 [2022-07-26 13:56:42,302 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-26 13:56:42,303 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-26 13:56:42,303 INFO L150 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-26 13:56:42,303 INFO L151 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-26 13:56:42,306 INFO L733 eck$LassoCheckResult]: Stem: 84#[ULTIMATE.startENTRY]don't care [303] ULTIMATE.startENTRY-->L71-3: Formula: (let ((.cse0 (select |v_#memory_int_52| 1)) (.cse1 (store |v_#valid_107| |v_ULTIMATE.start_main_~#t1~0#1.base_53| 1))) (and (= |v_ULTIMATE.start_main_~#t1~0#1.offset_45| 0) (= 48 (select .cse0 0)) (= 1 (select |v_#valid_107| 1)) (not (= |v_ULTIMATE.start_assume_abort_if_not_~cond#1_53| 0)) (= v_~counter~0_65 0) (= |v_#pthreadsForks_45| (+ |v_#pthreadsForks_46| 1)) (= |v_#length_67| (store (store |v_#length_68| |v_ULTIMATE.start_main_~#t1~0#1.base_53| 4) |v_ULTIMATE.start_main_~#t2~0#1.base_55| 4)) (= (select .cse0 1) 0) (< 0 |v_#StackHeapBarrier_22|) (= |v_ULTIMATE.start_main_#t~pre6#1_31| |v_#pthreadsForks_46|) (= (select |v_#valid_107| 2) 1) (= (select |v_#valid_107| |v_ULTIMATE.start_main_~#t1~0#1.base_53|) 0) (= (select .cse1 |v_ULTIMATE.start_main_~#t2~0#1.base_55|) 0) (= 2 (select |v_#length_68| 1)) (= (store |v_#memory_int_52| |v_ULTIMATE.start_main_~#t1~0#1.base_53| (store (select |v_#memory_int_52| |v_ULTIMATE.start_main_~#t1~0#1.base_53|) |v_ULTIMATE.start_main_~#t1~0#1.offset_45| |v_ULTIMATE.start_main_#t~pre6#1_31|)) |v_#memory_int_51|) (= (store .cse1 |v_ULTIMATE.start_main_~#t2~0#1.base_55| 1) |v_#valid_106|) (< |v_#StackHeapBarrier_22| |v_ULTIMATE.start_main_~#t1~0#1.base_53|) (= (ite (< 0 v_~M~0_52) 1 0) |v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_37|) (= (select |v_#length_68| 2) 30) (= (select |v_#valid_107| 0) 0) (= |v_#NULL.offset_8| 0) (= |v_ULTIMATE.start_main_~#t2~0#1.offset_47| 0) (= |v_#NULL.base_8| 0) (= |v_ULTIMATE.start_assume_abort_if_not_~cond#1_53| |v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_37|) (< |v_#StackHeapBarrier_22| |v_ULTIMATE.start_main_~#t2~0#1.base_55|))) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_22|, #pthreadsForks=|v_#pthreadsForks_46|, #valid=|v_#valid_107|, #memory_int=|v_#memory_int_52|, #length=|v_#length_68|} OutVars{~counter~0=v_~counter~0_65, ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_31|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_47|, ULTIMATE.start_main_#t~nondet9#1=|v_ULTIMATE.start_main_#t~nondet9#1_17|, ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_34|, ULTIMATE.start_main_#t~pre8#1=|v_ULTIMATE.start_main_#t~pre8#1_29|, #NULL.offset=|v_#NULL.offset_8|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_53|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_45|, ULTIMATE.start_main_#t~mem10#1=|v_ULTIMATE.start_main_#t~mem10#1_20|, #NULL.base=|v_#NULL.base_8|, #StackHeapBarrier=|v_#StackHeapBarrier_22|, #pthreadsForks=|v_#pthreadsForks_45|, ~M~0=v_~M~0_52, ULTIMATE.start_assume_abort_if_not_~cond#1=|v_ULTIMATE.start_assume_abort_if_not_~cond#1_53|, ULTIMATE.start_main_#t~nondet5#1=|v_ULTIMATE.start_main_#t~nondet5#1_24|, #valid=|v_#valid_106|, ULTIMATE.start_main_#t~nondet7#1=|v_ULTIMATE.start_main_#t~nondet7#1_19|, #memory_int=|v_#memory_int_51|, ULTIMATE.start_main_#t~mem11#1=|v_ULTIMATE.start_main_#t~mem11#1_22|, #length=|v_#length_67|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_55|, ULTIMATE.start_assume_abort_if_not_#in~cond#1=|v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_37|} AuxVars[] AssignedVars[~counter~0, ULTIMATE.start_main_#t~pre6#1, ULTIMATE.start_main_~#t2~0#1.offset, ULTIMATE.start_main_#t~nondet9#1, ULTIMATE.start_main_#res#1, ULTIMATE.start_main_#t~pre8#1, #NULL.offset, ULTIMATE.start_main_~#t1~0#1.base, ULTIMATE.start_main_~#t1~0#1.offset, ULTIMATE.start_main_#t~mem10#1, #NULL.base, #pthreadsForks, ~M~0, ULTIMATE.start_assume_abort_if_not_~cond#1, ULTIMATE.start_main_#t~nondet5#1, #valid, ULTIMATE.start_main_#t~nondet7#1, #memory_int, ULTIMATE.start_main_#t~mem11#1, #length, ULTIMATE.start_main_~#t2~0#1.base, ULTIMATE.start_assume_abort_if_not_#in~cond#1] 87#[L71-3]don't care [225] L71-3-->thread1ENTRY: Formula: (and (= |v_ULTIMATE.start_main_#t~pre6#1_6| v_thread1Thread1of1ForFork0_thidvar0_2) (= v_thread1Thread1of1ForFork0_thidvar1_2 0)) InVars {ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_6|} OutVars{ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_6|, thread1Thread1of1ForFork0_#res.base=|v_thread1Thread1of1ForFork0_#res.base_4|, thread1Thread1of1ForFork0_#t~post1=|v_thread1Thread1of1ForFork0_#t~post1_8|, thread1Thread1of1ForFork0_#t~post2=|v_thread1Thread1of1ForFork0_#t~post2_4|, thread1Thread1of1ForFork0_~i~0=v_thread1Thread1of1ForFork0_~i~0_12, thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2, thread1Thread1of1ForFork0_#res.offset=|v_thread1Thread1of1ForFork0_#res.offset_4|, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#res.base, thread1Thread1of1ForFork0_#t~post1, thread1Thread1of1ForFork0_#t~post2, thread1Thread1of1ForFork0_~i~0, thread1Thread1of1ForFork0_thidvar0, thread1Thread1of1ForFork0_#res.offset, thread1Thread1of1ForFork0_thidvar1] 89#[thread1ENTRY, L71-4]don't care [206] thread1ENTRY-->L41-4: Formula: (= v_thread1Thread1of1ForFork0_~i~0_1 0) InVars {} OutVars{thread1Thread1of1ForFork0_~i~0=v_thread1Thread1of1ForFork0_~i~0_1} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_~i~0] 91#[L71-4, L41-4]don't care [2022-07-26 13:56:42,306 INFO L735 eck$LassoCheckResult]: Loop: 91#[L71-4, L41-4]don't care [291] L41-4-->L41-4: Formula: (and (= (+ v_thread1Thread1of1ForFork0_~i~0_30 1) v_thread1Thread1of1ForFork0_~i~0_29) (= (+ v_~counter~0_54 1) v_~counter~0_53) (< v_thread1Thread1of1ForFork0_~i~0_30 v_~M~0_40)) InVars {~counter~0=v_~counter~0_54, ~M~0=v_~M~0_40, thread1Thread1of1ForFork0_~i~0=v_thread1Thread1of1ForFork0_~i~0_30} OutVars{~counter~0=v_~counter~0_53, ~M~0=v_~M~0_40, thread1Thread1of1ForFork0_#t~post1=|v_thread1Thread1of1ForFork0_#t~post1_15|, thread1Thread1of1ForFork0_#t~post2=|v_thread1Thread1of1ForFork0_#t~post2_9|, thread1Thread1of1ForFork0_~i~0=v_thread1Thread1of1ForFork0_~i~0_29} AuxVars[] AssignedVars[~counter~0, thread1Thread1of1ForFork0_#t~post1, thread1Thread1of1ForFork0_#t~post2, thread1Thread1of1ForFork0_~i~0] 91#[L71-4, L41-4]don't care [2022-07-26 13:56:42,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-26 13:56:42,310 INFO L85 PathProgramCache]: Analyzing trace with hash 328155, now seen corresponding path program 1 times [2022-07-26 13:56:42,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-26 13:56:42,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394127903] [2022-07-26 13:56:42,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-26 13:56:42,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-26 13:56:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:56:42,383 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-26 13:56:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:56:42,414 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-26 13:56:42,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-26 13:56:42,416 INFO L85 PathProgramCache]: Analyzing trace with hash 322, now seen corresponding path program 1 times [2022-07-26 13:56:42,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-26 13:56:42,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571059522] [2022-07-26 13:56:42,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-26 13:56:42,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-26 13:56:42,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:56:42,420 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-26 13:56:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:56:42,422 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-26 13:56:42,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-26 13:56:42,423 INFO L85 PathProgramCache]: Analyzing trace with hash 10173096, now seen corresponding path program 1 times [2022-07-26 13:56:42,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-26 13:56:42,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400361556] [2022-07-26 13:56:42,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-26 13:56:42,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-26 13:56:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:56:42,437 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-26 13:56:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:56:42,449 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-26 13:56:42,478 INFO L210 LassoAnalysis]: Preferences: [2022-07-26 13:56:42,479 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-26 13:56:42,479 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-26 13:56:42,479 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-26 13:56:42,479 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-26 13:56:42,479 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-26 13:56:42,479 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-26 13:56:42,479 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-26 13:56:42,479 INFO L133 ssoRankerPreferences]: Filename of dumped script: popl20-nonblocking-cntr.wvr.c_BEv2_Iteration1_Loop [2022-07-26 13:56:42,480 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-26 13:56:42,480 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-26 13:56:42,490 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:42,494 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:42,497 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:42,500 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:42,502 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:42,504 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:42,506 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:42,507 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:42,547 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-26 13:56:42,547 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-26 13:56:42,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-26 13:56:42,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-26 13:56:42,550 INFO L229 MonitoredProcess]: Starting monitored process 2 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) [2022-07-26 13:56:42,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-07-26 13:56:42,552 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-26 13:56:42,552 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-26 13:56:42,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2022-07-26 13:56:42,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-26 13:56:42,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-26 13:56:42,590 INFO L229 MonitoredProcess]: Starting monitored process 3 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) [2022-07-26 13:56:42,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-07-26 13:56:42,592 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-26 13:56:42,592 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-26 13:56:42,622 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-26 13:56:42,622 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {~counter~0=0} Honda state: {~counter~0=0} Generalized eigenvectors: [{~counter~0=-6}, {~counter~0=6}, {~counter~0=1}] Lambdas: [2, 1, 1] Nus: [1, 0] [2022-07-26 13:56:42,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-07-26 13:56:42,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-26 13:56:42,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-26 13:56:42,648 INFO L229 MonitoredProcess]: Starting monitored process 4 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) [2022-07-26 13:56:42,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-07-26 13:56:42,650 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-26 13:56:42,650 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-26 13:56:42,671 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-26 13:56:42,671 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep#funAddr~thread2.offset_1=1} Honda state: {v_rep#funAddr~thread2.offset_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-26 13:56:42,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-07-26 13:56:42,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-26 13:56:42,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-26 13:56:42,690 INFO L229 MonitoredProcess]: Starting monitored process 5 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) [2022-07-26 13:56:42,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-07-26 13:56:42,693 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-26 13:56:42,693 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-26 13:56:42,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-07-26 13:56:42,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-26 13:56:42,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-26 13:56:42,735 INFO L229 MonitoredProcess]: Starting monitored process 6 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) [2022-07-26 13:56:42,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-07-26 13:56:42,737 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-26 13:56:42,738 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-26 13:56:42,838 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-26 13:56:42,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2022-07-26 13:56:42,842 INFO L210 LassoAnalysis]: Preferences: [2022-07-26 13:56:42,842 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-26 13:56:42,842 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-26 13:56:42,842 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-26 13:56:42,842 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-26 13:56:42,842 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-26 13:56:42,842 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-26 13:56:42,842 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-26 13:56:42,842 INFO L133 ssoRankerPreferences]: Filename of dumped script: popl20-nonblocking-cntr.wvr.c_BEv2_Iteration1_Loop [2022-07-26 13:56:42,842 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-26 13:56:42,842 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-26 13:56:42,843 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:42,850 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:42,852 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:42,854 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:42,860 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:42,865 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:42,868 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:42,869 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:42,918 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-26 13:56:42,921 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-26 13:56:42,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-26 13:56:42,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-26 13:56:42,922 INFO L229 MonitoredProcess]: Starting monitored process 7 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) [2022-07-26 13:56:42,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-07-26 13:56:42,925 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-26 13:56:42,931 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-26 13:56:42,931 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-26 13:56:42,932 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-26 13:56:42,932 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-26 13:56:42,932 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-26 13:56:42,933 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-26 13:56:42,933 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-26 13:56:42,955 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-26 13:56:42,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-07-26 13:56:42,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-26 13:56:42,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-26 13:56:42,974 INFO L229 MonitoredProcess]: Starting monitored process 8 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) [2022-07-26 13:56:42,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-07-26 13:56:42,975 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-26 13:56:42,981 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-26 13:56:42,981 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-26 13:56:42,981 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-26 13:56:42,982 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-26 13:56:42,984 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-26 13:56:42,984 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-26 13:56:42,991 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-26 13:56:43,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-07-26 13:56:43,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-26 13:56:43,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-26 13:56:43,007 INFO L229 MonitoredProcess]: Starting monitored process 9 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) [2022-07-26 13:56:43,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-07-26 13:56:43,009 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-26 13:56:43,015 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-26 13:56:43,015 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-26 13:56:43,015 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-26 13:56:43,015 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-26 13:56:43,017 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-26 13:56:43,018 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-26 13:56:43,029 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-26 13:56:43,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-07-26 13:56:43,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-26 13:56:43,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-26 13:56:43,049 INFO L229 MonitoredProcess]: Starting monitored process 10 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) [2022-07-26 13:56:43,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-07-26 13:56:43,051 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-26 13:56:43,057 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-26 13:56:43,057 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-26 13:56:43,057 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-26 13:56:43,058 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-26 13:56:43,058 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-26 13:56:43,058 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-26 13:56:43,058 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-26 13:56:43,073 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-26 13:56:43,077 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-07-26 13:56:43,077 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-26 13:56:43,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-26 13:56:43,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-26 13:56:43,079 INFO L229 MonitoredProcess]: Starting monitored process 11 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) [2022-07-26 13:56:43,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-07-26 13:56:43,119 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-26 13:56:43,119 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-26 13:56:43,120 INFO L513 LassoAnalysis]: Proved termination. [2022-07-26 13:56:43,120 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(~M~0, thread1Thread1of1ForFork0_~i~0) = 1*~M~0 - 1*thread1Thread1of1ForFork0_~i~0 Supporting invariants [] [2022-07-26 13:56:43,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-07-26 13:56:43,137 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-26 13:56:43,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-26 13:56:43,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-26 13:56:43,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-26 13:56:43,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-26 13:56:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-26 13:56:43,184 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-26 13:56:43,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-26 13:56:43,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-26 13:56:43,201 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-07-26 13:56:43,203 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 33 states, but on-demand construction may add more states Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-07-26 13:56:43,241 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 33 states, but on-demand construction may add more states. Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) Result 84 states and 231 transitions. Complement of second has 5 states. [2022-07-26 13:56:43,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-26 13:56:43,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-07-26 13:56:43,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 29 transitions. [2022-07-26 13:56:43,247 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 3 letters. Loop has 1 letters. [2022-07-26 13:56:43,248 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-26 13:56:43,248 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 4 letters. Loop has 1 letters. [2022-07-26 13:56:43,248 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-26 13:56:43,248 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 3 letters. Loop has 2 letters. [2022-07-26 13:56:43,248 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-26 13:56:43,249 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 231 transitions. [2022-07-26 13:56:43,252 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 8 [2022-07-26 13:56:43,256 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 49 states and 131 transitions. [2022-07-26 13:56:43,256 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2022-07-26 13:56:43,257 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 38 [2022-07-26 13:56:43,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 131 transitions. [2022-07-26 13:56:43,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-26 13:56:43,257 INFO L220 hiAutomatonCegarLoop]: Abstraction has 49 states and 131 transitions. [2022-07-26 13:56:43,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 131 transitions. [2022-07-26 13:56:43,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 40. [2022-07-26 13:56:43,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 40 states have (on average 2.8) internal successors, (112), 39 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-26 13:56:43,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 112 transitions. [2022-07-26 13:56:43,281 INFO L242 hiAutomatonCegarLoop]: Abstraction has 40 states and 112 transitions. [2022-07-26 13:56:43,281 INFO L426 stractBuchiCegarLoop]: Abstraction has 40 states and 112 transitions. [2022-07-26 13:56:43,282 INFO L333 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-26 13:56:43,282 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 112 transitions. [2022-07-26 13:56:43,283 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 8 [2022-07-26 13:56:43,283 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-26 13:56:43,283 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-26 13:56:43,283 INFO L150 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-26 13:56:43,283 INFO L151 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-26 13:56:43,284 INFO L733 eck$LassoCheckResult]: Stem: 268#[ULTIMATE.startENTRY]don't care [303] ULTIMATE.startENTRY-->L71-3: Formula: (let ((.cse0 (select |v_#memory_int_52| 1)) (.cse1 (store |v_#valid_107| |v_ULTIMATE.start_main_~#t1~0#1.base_53| 1))) (and (= |v_ULTIMATE.start_main_~#t1~0#1.offset_45| 0) (= 48 (select .cse0 0)) (= 1 (select |v_#valid_107| 1)) (not (= |v_ULTIMATE.start_assume_abort_if_not_~cond#1_53| 0)) (= v_~counter~0_65 0) (= |v_#pthreadsForks_45| (+ |v_#pthreadsForks_46| 1)) (= |v_#length_67| (store (store |v_#length_68| |v_ULTIMATE.start_main_~#t1~0#1.base_53| 4) |v_ULTIMATE.start_main_~#t2~0#1.base_55| 4)) (= (select .cse0 1) 0) (< 0 |v_#StackHeapBarrier_22|) (= |v_ULTIMATE.start_main_#t~pre6#1_31| |v_#pthreadsForks_46|) (= (select |v_#valid_107| 2) 1) (= (select |v_#valid_107| |v_ULTIMATE.start_main_~#t1~0#1.base_53|) 0) (= (select .cse1 |v_ULTIMATE.start_main_~#t2~0#1.base_55|) 0) (= 2 (select |v_#length_68| 1)) (= (store |v_#memory_int_52| |v_ULTIMATE.start_main_~#t1~0#1.base_53| (store (select |v_#memory_int_52| |v_ULTIMATE.start_main_~#t1~0#1.base_53|) |v_ULTIMATE.start_main_~#t1~0#1.offset_45| |v_ULTIMATE.start_main_#t~pre6#1_31|)) |v_#memory_int_51|) (= (store .cse1 |v_ULTIMATE.start_main_~#t2~0#1.base_55| 1) |v_#valid_106|) (< |v_#StackHeapBarrier_22| |v_ULTIMATE.start_main_~#t1~0#1.base_53|) (= (ite (< 0 v_~M~0_52) 1 0) |v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_37|) (= (select |v_#length_68| 2) 30) (= (select |v_#valid_107| 0) 0) (= |v_#NULL.offset_8| 0) (= |v_ULTIMATE.start_main_~#t2~0#1.offset_47| 0) (= |v_#NULL.base_8| 0) (= |v_ULTIMATE.start_assume_abort_if_not_~cond#1_53| |v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_37|) (< |v_#StackHeapBarrier_22| |v_ULTIMATE.start_main_~#t2~0#1.base_55|))) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_22|, #pthreadsForks=|v_#pthreadsForks_46|, #valid=|v_#valid_107|, #memory_int=|v_#memory_int_52|, #length=|v_#length_68|} OutVars{~counter~0=v_~counter~0_65, ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_31|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_47|, ULTIMATE.start_main_#t~nondet9#1=|v_ULTIMATE.start_main_#t~nondet9#1_17|, ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_34|, ULTIMATE.start_main_#t~pre8#1=|v_ULTIMATE.start_main_#t~pre8#1_29|, #NULL.offset=|v_#NULL.offset_8|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_53|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_45|, ULTIMATE.start_main_#t~mem10#1=|v_ULTIMATE.start_main_#t~mem10#1_20|, #NULL.base=|v_#NULL.base_8|, #StackHeapBarrier=|v_#StackHeapBarrier_22|, #pthreadsForks=|v_#pthreadsForks_45|, ~M~0=v_~M~0_52, ULTIMATE.start_assume_abort_if_not_~cond#1=|v_ULTIMATE.start_assume_abort_if_not_~cond#1_53|, ULTIMATE.start_main_#t~nondet5#1=|v_ULTIMATE.start_main_#t~nondet5#1_24|, #valid=|v_#valid_106|, ULTIMATE.start_main_#t~nondet7#1=|v_ULTIMATE.start_main_#t~nondet7#1_19|, #memory_int=|v_#memory_int_51|, ULTIMATE.start_main_#t~mem11#1=|v_ULTIMATE.start_main_#t~mem11#1_22|, #length=|v_#length_67|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_55|, ULTIMATE.start_assume_abort_if_not_#in~cond#1=|v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_37|} AuxVars[] AssignedVars[~counter~0, ULTIMATE.start_main_#t~pre6#1, ULTIMATE.start_main_~#t2~0#1.offset, ULTIMATE.start_main_#t~nondet9#1, ULTIMATE.start_main_#res#1, ULTIMATE.start_main_#t~pre8#1, #NULL.offset, ULTIMATE.start_main_~#t1~0#1.base, ULTIMATE.start_main_~#t1~0#1.offset, ULTIMATE.start_main_#t~mem10#1, #NULL.base, #pthreadsForks, ~M~0, ULTIMATE.start_assume_abort_if_not_~cond#1, ULTIMATE.start_main_#t~nondet5#1, #valid, ULTIMATE.start_main_#t~nondet7#1, #memory_int, ULTIMATE.start_main_#t~mem11#1, #length, ULTIMATE.start_main_~#t2~0#1.base, ULTIMATE.start_assume_abort_if_not_#in~cond#1] 270#[L71-3]don't care [225] L71-3-->thread1ENTRY: Formula: (and (= |v_ULTIMATE.start_main_#t~pre6#1_6| v_thread1Thread1of1ForFork0_thidvar0_2) (= v_thread1Thread1of1ForFork0_thidvar1_2 0)) InVars {ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_6|} OutVars{ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_6|, thread1Thread1of1ForFork0_#res.base=|v_thread1Thread1of1ForFork0_#res.base_4|, thread1Thread1of1ForFork0_#t~post1=|v_thread1Thread1of1ForFork0_#t~post1_8|, thread1Thread1of1ForFork0_#t~post2=|v_thread1Thread1of1ForFork0_#t~post2_4|, thread1Thread1of1ForFork0_~i~0=v_thread1Thread1of1ForFork0_~i~0_12, thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2, thread1Thread1of1ForFork0_#res.offset=|v_thread1Thread1of1ForFork0_#res.offset_4|, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#res.base, thread1Thread1of1ForFork0_#t~post1, thread1Thread1of1ForFork0_#t~post2, thread1Thread1of1ForFork0_~i~0, thread1Thread1of1ForFork0_thidvar0, thread1Thread1of1ForFork0_#res.offset, thread1Thread1of1ForFork0_thidvar1] 276#[thread1ENTRY, L71-4]don't care [287] L71-4-->L72-3: Formula: (and (= |v_#memory_int_31| (store |v_#memory_int_32| |v_ULTIMATE.start_main_~#t2~0#1.base_37| (store (select |v_#memory_int_32| |v_ULTIMATE.start_main_~#t2~0#1.base_37|) |v_ULTIMATE.start_main_~#t2~0#1.offset_29| |v_ULTIMATE.start_main_#t~pre8#1_21|))) (<= (+ |v_ULTIMATE.start_main_~#t2~0#1.offset_29| 4) (select |v_#length_43| |v_ULTIMATE.start_main_~#t2~0#1.base_37|)) (= |v_ULTIMATE.start_main_#t~pre8#1_21| |v_#pthreadsForks_26|) (= (select |v_#valid_74| |v_ULTIMATE.start_main_~#t2~0#1.base_37|) 1) (<= 0 |v_ULTIMATE.start_main_~#t2~0#1.offset_29|) (= |v_#pthreadsForks_25| (+ |v_#pthreadsForks_26| 1))) InVars {#pthreadsForks=|v_#pthreadsForks_26|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_29|, #valid=|v_#valid_74|, #memory_int=|v_#memory_int_32|, #length=|v_#length_43|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_37|} OutVars{ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_15|, #pthreadsForks=|v_#pthreadsForks_25|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_29|, #valid=|v_#valid_74|, ULTIMATE.start_main_#t~nondet7#1=|v_ULTIMATE.start_main_#t~nondet7#1_11|, #memory_int=|v_#memory_int_31|, ULTIMATE.start_main_#t~pre8#1=|v_ULTIMATE.start_main_#t~pre8#1_21|, #length=|v_#length_43|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_37|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~pre6#1, #pthreadsForks, ULTIMATE.start_main_#t~nondet7#1, #memory_int, ULTIMATE.start_main_#t~pre8#1] 280#[thread1ENTRY, L72-3]don't care [228] L72-3-->thread2ENTRY: Formula: (and (= |v_ULTIMATE.start_main_#t~pre8#1_6| v_thread2Thread1of1ForFork1_thidvar0_2) (= 0 v_thread2Thread1of1ForFork1_thidvar1_2) (= 0 v_thread2Thread1of1ForFork1_thidvar2_2)) InVars {ULTIMATE.start_main_#t~pre8#1=|v_ULTIMATE.start_main_#t~pre8#1_6|} OutVars{thread2Thread1of1ForFork1_#res.offset=|v_thread2Thread1of1ForFork1_#res.offset_4|, thread2Thread1of1ForFork1_~i~1=v_thread2Thread1of1ForFork1_~i~1_12, thread2Thread1of1ForFork1_#t~post4=|v_thread2Thread1of1ForFork1_#t~post4_6|, thread2Thread1of1ForFork1_#t~post3=|v_thread2Thread1of1ForFork1_#t~post3_6|, thread2Thread1of1ForFork1_#res.base=|v_thread2Thread1of1ForFork1_#res.base_4|, ULTIMATE.start_main_#t~pre8#1=|v_ULTIMATE.start_main_#t~pre8#1_6|, thread2Thread1of1ForFork1_thidvar2=v_thread2Thread1of1ForFork1_thidvar2_2, thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#res.offset, thread2Thread1of1ForFork1_~i~1, thread2Thread1of1ForFork1_#t~post4, thread2Thread1of1ForFork1_#t~post3, thread2Thread1of1ForFork1_#res.base, thread2Thread1of1ForFork1_thidvar2, thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 342#[L72-4, thread1ENTRY, thread2ENTRY]don't care [216] thread2ENTRY-->L54-1: Formula: (= v_thread2Thread1of1ForFork1_~i~1_1 0) InVars {} OutVars{thread2Thread1of1ForFork1_~i~1=v_thread2Thread1of1ForFork1_~i~1_1} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_~i~1] 336#[L72-4, thread1ENTRY, L54-1]don't care [2022-07-26 13:56:43,284 INFO L735 eck$LassoCheckResult]: Loop: 336#[L72-4, thread1ENTRY, L54-1]don't care [258] L54-1-->L54-1: Formula: (and (< v_thread2Thread1of1ForFork1_~i~1_16 v_~M~0_20) (let ((.cse0 (< 0 v_~counter~0_38))) (or (and (= (+ v_~counter~0_37 1) v_~counter~0_38) .cse0 (= v_thread2Thread1of1ForFork1_~i~1_15 (+ v_thread2Thread1of1ForFork1_~i~1_16 1))) (and (= |v_thread2Thread1of1ForFork1_#t~post3_8| |v_thread2Thread1of1ForFork1_#t~post3_7|) (= v_~counter~0_38 v_~counter~0_37) (= v_thread2Thread1of1ForFork1_~i~1_16 v_thread2Thread1of1ForFork1_~i~1_15) (not .cse0) (= |v_thread2Thread1of1ForFork1_#t~post4_8| |v_thread2Thread1of1ForFork1_#t~post4_7|))))) InVars {~counter~0=v_~counter~0_38, thread2Thread1of1ForFork1_#t~post4=|v_thread2Thread1of1ForFork1_#t~post4_8|, thread2Thread1of1ForFork1_~i~1=v_thread2Thread1of1ForFork1_~i~1_16, thread2Thread1of1ForFork1_#t~post3=|v_thread2Thread1of1ForFork1_#t~post3_8|, ~M~0=v_~M~0_20} OutVars{~counter~0=v_~counter~0_37, thread2Thread1of1ForFork1_#t~post4=|v_thread2Thread1of1ForFork1_#t~post4_7|, thread2Thread1of1ForFork1_~i~1=v_thread2Thread1of1ForFork1_~i~1_15, thread2Thread1of1ForFork1_#t~post3=|v_thread2Thread1of1ForFork1_#t~post3_7|, ~M~0=v_~M~0_20} AuxVars[] AssignedVars[~counter~0, thread2Thread1of1ForFork1_#t~post4, thread2Thread1of1ForFork1_~i~1, thread2Thread1of1ForFork1_#t~post3] 336#[L72-4, thread1ENTRY, L54-1]don't care [2022-07-26 13:56:43,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-26 13:56:43,284 INFO L85 PathProgramCache]: Analyzing trace with hash 315442080, now seen corresponding path program 1 times [2022-07-26 13:56:43,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-26 13:56:43,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069023159] [2022-07-26 13:56:43,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-26 13:56:43,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-26 13:56:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:56:43,298 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-26 13:56:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:56:43,323 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-26 13:56:43,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-26 13:56:43,323 INFO L85 PathProgramCache]: Analyzing trace with hash 289, now seen corresponding path program 1 times [2022-07-26 13:56:43,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-26 13:56:43,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249821824] [2022-07-26 13:56:43,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-26 13:56:43,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-26 13:56:43,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:56:43,328 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-26 13:56:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:56:43,337 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-26 13:56:43,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-26 13:56:43,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1188770146, now seen corresponding path program 1 times [2022-07-26 13:56:43,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-26 13:56:43,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420399905] [2022-07-26 13:56:43,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-26 13:56:43,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-26 13:56:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:56:43,355 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-26 13:56:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:56:43,369 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-26 13:56:43,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.07 01:56:43 BoogieIcfgContainer [2022-07-26 13:56:43,821 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-26 13:56:43,822 INFO L158 Benchmark]: Toolchain (without parser) took 4061.16ms. Allocated memory was 185.6MB in the beginning and 244.3MB in the end (delta: 58.7MB). Free memory was 127.9MB in the beginning and 106.9MB in the end (delta: 21.0MB). Peak memory consumption was 81.3MB. Max. memory is 8.0GB. [2022-07-26 13:56:43,822 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 185.6MB. Free memory is still 144.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-07-26 13:56:43,823 INFO L158 Benchmark]: CACSL2BoogieTranslator took 253.12ms. Allocated memory was 185.6MB in the beginning and 244.3MB in the end (delta: 58.7MB). Free memory was 127.7MB in the beginning and 214.7MB in the end (delta: -87.0MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. [2022-07-26 13:56:43,823 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.80ms. Allocated memory is still 244.3MB. Free memory was 214.7MB in the beginning and 213.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-07-26 13:56:43,823 INFO L158 Benchmark]: Boogie Preprocessor took 30.01ms. Allocated memory is still 244.3MB. Free memory was 213.1MB in the beginning and 212.1MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-07-26 13:56:43,823 INFO L158 Benchmark]: RCFGBuilder took 320.31ms. Allocated memory is still 244.3MB. Free memory was 212.1MB in the beginning and 198.5MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-07-26 13:56:43,824 INFO L158 Benchmark]: BuchiAutomizer took 3421.09ms. Allocated memory is still 244.3MB. Free memory was 197.9MB in the beginning and 106.9MB in the end (delta: 91.0MB). Peak memory consumption was 92.6MB. Max. memory is 8.0GB. [2022-07-26 13:56:43,825 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 185.6MB. Free memory is still 144.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 253.12ms. Allocated memory was 185.6MB in the beginning and 244.3MB in the end (delta: 58.7MB). Free memory was 127.7MB in the beginning and 214.7MB in the end (delta: -87.0MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.80ms. Allocated memory is still 244.3MB. Free memory was 214.7MB in the beginning and 213.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.01ms. Allocated memory is still 244.3MB. Free memory was 213.1MB in the beginning and 212.1MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 320.31ms. Allocated memory is still 244.3MB. Free memory was 212.1MB in the beginning and 198.5MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * BuchiAutomizer took 3421.09ms. Allocated memory is still 244.3MB. Free memory was 197.9MB in the beginning and 106.9MB in the end (delta: 91.0MB). Peak memory consumption was 92.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i + M and consists of 4 locations. The remainder module has 40 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.3s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations. 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 [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26 IncrementalHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 3 mSDtfsCounter, 26 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax259 hnf100 lsp25 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 18ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s InitialAbstractionConstructionTime: 1.7s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 52]: 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 {\old(cond)=1, \result={0:0}, \result={0:0}, \result=0, cond=1, counter=0, i=0, i=0, M=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3e2fa23e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@599144a4 in0,0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@66718b in17801,0, org.eclipse.cdt.internal.core.dom.parser.c.CASTIdExpression@52cdfa10=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTIdExpression@6c9bafe4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@1db93c4c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@38c8ed78=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@41b348f5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@5433337c=0, t1={3:0}, t2={21861:0}} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 52]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L38] 0 int M, counter; [L65] 0 pthread_t t1, t2; [L67] 0 M = __VERIFIER_nondet_int() [L68] CALL 0 assume_abort_if_not(M > 0) [L35] COND FALSE 0 !(!cond) [L68] RET 0 assume_abort_if_not(M > 0) [L71] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) [L72] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) [L51] 2 int i = 0; Loop: [L52] COND TRUE i < M [L54] COND TRUE counter > 0 [L55] counter-- [L56] i++ End of lasso representation. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 79 PlacesBefore, 20 PlacesAfterwards, 78 TransitionsBefore, 15 TransitionsAfterwards, 404 CoEnabledTransitionPairs, 6 FixpointIterations, 45 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 75 TotalNumberOfCompositions, 414 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 408, positive: 407, positive conditional: 0, positive unconditional: 407, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 276, positive: 275, positive conditional: 0, positive unconditional: 275, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 276, positive: 275, positive conditional: 0, positive unconditional: 275, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 408, positive: 132, positive conditional: 0, positive unconditional: 132, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 276, unknown conditional: 0, unknown unconditional: 276] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 RESULT: Ultimate proved your program to be incorrect! [2022-07-26 13:56:43,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-07-26 13:56:44,066 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...