/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 09:57:47,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 09:57:47,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 09:57:47,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 09:57:47,928 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 09:57:47,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 09:57:47,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 09:57:47,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 09:57:47,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 09:57:47,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 09:57:47,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 09:57:47,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 09:57:47,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 09:57:47,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 09:57:47,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 09:57:47,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 09:57:47,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 09:57:47,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 09:57:47,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 09:57:47,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 09:57:47,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 09:57:47,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 09:57:47,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 09:57:47,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 09:57:47,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 09:57:47,962 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 09:57:47,962 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 09:57:47,964 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 09:57:47,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 09:57:47,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 09:57:47,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 09:57:47,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 09:57:47,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 09:57:47,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 09:57:47,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 09:57:47,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 09:57:47,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 09:57:47,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 09:57:47,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 09:57:47,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 09:57:47,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 09:57:47,970 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 09:57:47,994 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 09:57:47,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 09:57:47,995 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 09:57:47,995 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 09:57:47,996 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 09:57:47,996 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 09:57:47,996 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 09:57:47,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 09:57:47,996 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 09:57:47,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 09:57:47,996 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 09:57:47,996 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 09:57:47,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 09:57:47,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 09:57:47,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 09:57:47,997 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 09:57:47,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 09:57:47,997 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 09:57:47,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 09:57:47,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 09:57:47,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 09:57:47,997 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 09:57:47,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 09:57:47,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:57:47,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 09:57:47,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 09:57:47,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 09:57:47,998 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 09:57:47,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 09:57:47,998 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 09:57:47,998 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 09:57:47,998 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 09:57:48,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 09:57:48,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 09:57:48,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 09:57:48,215 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 09:57:48,215 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 09:57:48,216 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c [2023-01-28 09:57:49,228 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 09:57:49,350 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 09:57:49,350 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c [2023-01-28 09:57:49,354 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60c9efb5e/dbf40eb924a143ae944c9d248e58ad2e/FLAG637fa24cf [2023-01-28 09:57:49,367 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60c9efb5e/dbf40eb924a143ae944c9d248e58ad2e [2023-01-28 09:57:49,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 09:57:49,370 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 09:57:49,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 09:57:49,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 09:57:49,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 09:57:49,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:57:49" (1/1) ... [2023-01-28 09:57:49,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b287407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:49, skipping insertion in model container [2023-01-28 09:57:49,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:57:49" (1/1) ... [2023-01-28 09:57:49,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 09:57:49,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 09:57:49,482 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c[2212,2225] [2023-01-28 09:57:49,485 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:57:49,491 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 09:57:49,503 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c[2212,2225] [2023-01-28 09:57:49,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:57:49,508 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 09:57:49,509 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 09:57:49,513 INFO L208 MainTranslator]: Completed translation [2023-01-28 09:57:49,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:49 WrapperNode [2023-01-28 09:57:49,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 09:57:49,514 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 09:57:49,514 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 09:57:49,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 09:57:49,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:49" (1/1) ... [2023-01-28 09:57:49,525 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:49" (1/1) ... [2023-01-28 09:57:49,537 INFO L138 Inliner]: procedures = 22, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2023-01-28 09:57:49,537 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 09:57:49,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 09:57:49,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 09:57:49,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 09:57:49,544 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:49" (1/1) ... [2023-01-28 09:57:49,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:49" (1/1) ... [2023-01-28 09:57:49,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:49" (1/1) ... [2023-01-28 09:57:49,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:49" (1/1) ... [2023-01-28 09:57:49,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:49" (1/1) ... [2023-01-28 09:57:49,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:49" (1/1) ... [2023-01-28 09:57:49,550 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:49" (1/1) ... [2023-01-28 09:57:49,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:49" (1/1) ... [2023-01-28 09:57:49,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 09:57:49,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 09:57:49,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 09:57:49,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 09:57:49,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:49" (1/1) ... [2023-01-28 09:57:49,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:57:49,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:57:49,590 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 09:57:49,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 09:57:49,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 09:57:49,619 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 09:57:49,619 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 09:57:49,619 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 09:57:49,619 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 09:57:49,619 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 09:57:49,619 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 09:57:49,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 09:57:49,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 09:57:49,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 09:57:49,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 09:57:49,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 09:57:49,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 09:57:49,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 09:57:49,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 09:57:49,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 09:57:49,622 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 09:57:49,707 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 09:57:49,708 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 09:57:49,942 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 09:57:49,963 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 09:57:49,963 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 09:57:49,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:57:49 BoogieIcfgContainer [2023-01-28 09:57:49,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 09:57:49,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 09:57:49,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 09:57:49,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 09:57:49,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 09:57:49" (1/3) ... [2023-01-28 09:57:49,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ca4dc11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:57:49, skipping insertion in model container [2023-01-28 09:57:49,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:49" (2/3) ... [2023-01-28 09:57:49,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ca4dc11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:57:49, skipping insertion in model container [2023-01-28 09:57:49,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:57:49" (3/3) ... [2023-01-28 09:57:49,971 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-simple-equiv.wvr.c [2023-01-28 09:57:49,983 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 09:57:49,983 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 09:57:49,983 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 09:57:50,019 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 09:57:50,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 90 transitions, 204 flow [2023-01-28 09:57:50,072 INFO L130 PetriNetUnfolder]: 2/87 cut-off events. [2023-01-28 09:57:50,072 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:57:50,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 87 events. 2/87 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 25 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2023-01-28 09:57:50,075 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 90 transitions, 204 flow [2023-01-28 09:57:50,078 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 77 transitions, 172 flow [2023-01-28 09:57:50,080 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 09:57:50,086 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 77 transitions, 172 flow [2023-01-28 09:57:50,087 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 77 transitions, 172 flow [2023-01-28 09:57:50,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 77 transitions, 172 flow [2023-01-28 09:57:50,103 INFO L130 PetriNetUnfolder]: 2/77 cut-off events. [2023-01-28 09:57:50,103 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:57:50,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 2/77 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 24 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2023-01-28 09:57:50,104 INFO L119 LiptonReduction]: Number of co-enabled transitions 360 [2023-01-28 09:57:51,740 INFO L134 LiptonReduction]: Checked pairs total: 517 [2023-01-28 09:57:51,741 INFO L136 LiptonReduction]: Total number of compositions: 70 [2023-01-28 09:57:51,750 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 09:57:51,754 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7262a64d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 09:57:51,755 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 09:57:51,758 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-01-28 09:57:51,758 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:57:51,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:57:51,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:57:51,759 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:57:51,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:57:51,762 INFO L85 PathProgramCache]: Analyzing trace with hash -410798416, now seen corresponding path program 1 times [2023-01-28 09:57:51,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:57:51,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126774952] [2023-01-28 09:57:51,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:57:51,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:57:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:57:52,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:57:52,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:57:52,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126774952] [2023-01-28 09:57:52,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126774952] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:57:52,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:57:52,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:57:52,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514404945] [2023-01-28 09:57:52,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:57:52,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:57:52,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:57:52,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:57:52,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:57:52,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 160 [2023-01-28 09:57:52,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 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) [2023-01-28 09:57:52,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:57:52,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 160 [2023-01-28 09:57:52,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:57:52,416 INFO L130 PetriNetUnfolder]: 40/96 cut-off events. [2023-01-28 09:57:52,416 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-01-28 09:57:52,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 96 events. 40/96 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 242 event pairs, 13 based on Foata normal form. 1/97 useless extension candidates. Maximal degree in co-relation 168. Up to 67 conditions per place. [2023-01-28 09:57:52,418 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 20 selfloop transitions, 3 changer transitions 14/37 dead transitions. [2023-01-28 09:57:52,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 37 transitions, 184 flow [2023-01-28 09:57:52,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:57:52,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:57:52,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 383 transitions. [2023-01-28 09:57:52,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47875 [2023-01-28 09:57:52,428 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 383 transitions. [2023-01-28 09:57:52,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 383 transitions. [2023-01-28 09:57:52,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:57:52,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 383 transitions. [2023-01-28 09:57:52,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.6) internal successors, (383), 5 states have internal predecessors, (383), 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) [2023-01-28 09:57:52,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 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) [2023-01-28 09:57:52,440 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 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) [2023-01-28 09:57:52,441 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 50 flow. Second operand 5 states and 383 transitions. [2023-01-28 09:57:52,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 37 transitions, 184 flow [2023-01-28 09:57:52,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 37 transitions, 160 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 09:57:52,444 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 67 flow [2023-01-28 09:57:52,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=67, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2023-01-28 09:57:52,448 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2023-01-28 09:57:52,448 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 67 flow [2023-01-28 09:57:52,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 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) [2023-01-28 09:57:52,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:57:52,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:57:52,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 09:57:52,449 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:57:52,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:57:52,449 INFO L85 PathProgramCache]: Analyzing trace with hash -494238780, now seen corresponding path program 2 times [2023-01-28 09:57:52,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:57:52,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084026420] [2023-01-28 09:57:52,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:57:52,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:57:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:57:52,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:57:52,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:57:52,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084026420] [2023-01-28 09:57:52,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084026420] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:57:52,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:57:52,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:57:52,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928543296] [2023-01-28 09:57:52,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:57:52,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:57:52,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:57:52,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:57:52,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:57:52,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 160 [2023-01-28 09:57:52,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 67 flow. Second operand has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 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) [2023-01-28 09:57:52,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:57:52,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 160 [2023-01-28 09:57:52,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:57:52,795 INFO L130 PetriNetUnfolder]: 31/79 cut-off events. [2023-01-28 09:57:52,795 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2023-01-28 09:57:52,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 79 events. 31/79 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 202 event pairs, 1 based on Foata normal form. 1/80 useless extension candidates. Maximal degree in co-relation 107. Up to 40 conditions per place. [2023-01-28 09:57:52,796 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 22 selfloop transitions, 4 changer transitions 15/41 dead transitions. [2023-01-28 09:57:52,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 41 transitions, 218 flow [2023-01-28 09:57:52,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:57:52,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:57:52,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 387 transitions. [2023-01-28 09:57:52,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48375 [2023-01-28 09:57:52,798 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 387 transitions. [2023-01-28 09:57:52,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 387 transitions. [2023-01-28 09:57:52,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:57:52,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 387 transitions. [2023-01-28 09:57:52,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.4) internal successors, (387), 5 states have internal predecessors, (387), 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) [2023-01-28 09:57:52,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 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) [2023-01-28 09:57:52,800 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 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) [2023-01-28 09:57:52,800 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 67 flow. Second operand 5 states and 387 transitions. [2023-01-28 09:57:52,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 41 transitions, 218 flow [2023-01-28 09:57:52,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 41 transitions, 197 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-01-28 09:57:52,802 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 74 flow [2023-01-28 09:57:52,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=74, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-01-28 09:57:52,803 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2023-01-28 09:57:52,803 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 74 flow [2023-01-28 09:57:52,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 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) [2023-01-28 09:57:52,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:57:52,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:57:52,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 09:57:52,804 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:57:52,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:57:52,804 INFO L85 PathProgramCache]: Analyzing trace with hash 988455482, now seen corresponding path program 3 times [2023-01-28 09:57:52,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:57:52,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386505918] [2023-01-28 09:57:52,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:57:52,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:57:52,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:57:52,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:57:52,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:57:52,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386505918] [2023-01-28 09:57:52,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386505918] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:57:52,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:57:52,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:57:52,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365599392] [2023-01-28 09:57:52,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:57:52,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:57:52,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:57:52,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:57:52,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:57:52,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 160 [2023-01-28 09:57:52,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 74 flow. Second operand has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 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) [2023-01-28 09:57:52,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:57:52,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 160 [2023-01-28 09:57:52,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:57:53,019 INFO L130 PetriNetUnfolder]: 17/49 cut-off events. [2023-01-28 09:57:53,020 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2023-01-28 09:57:53,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 49 events. 17/49 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 1 based on Foata normal form. 1/50 useless extension candidates. Maximal degree in co-relation 64. Up to 23 conditions per place. [2023-01-28 09:57:53,020 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2023-01-28 09:57:53,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 27 transitions, 148 flow [2023-01-28 09:57:53,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:57:53,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:57:53,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 373 transitions. [2023-01-28 09:57:53,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46625 [2023-01-28 09:57:53,022 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 373 transitions. [2023-01-28 09:57:53,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 373 transitions. [2023-01-28 09:57:53,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:57:53,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 373 transitions. [2023-01-28 09:57:53,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.6) internal successors, (373), 5 states have internal predecessors, (373), 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) [2023-01-28 09:57:53,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 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) [2023-01-28 09:57:53,025 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 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) [2023-01-28 09:57:53,025 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 74 flow. Second operand 5 states and 373 transitions. [2023-01-28 09:57:53,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 27 transitions, 148 flow [2023-01-28 09:57:53,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 27 transitions, 136 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-01-28 09:57:53,026 INFO L231 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2023-01-28 09:57:53,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2023-01-28 09:57:53,026 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2023-01-28 09:57:53,026 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2023-01-28 09:57:53,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 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) [2023-01-28 09:57:53,029 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 09:57:53,029 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 09:57:53,029 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 09:57:53,029 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 09:57:53,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 09:57:53,030 INFO L445 BasicCegarLoop]: Path program histogram: [3] [2023-01-28 09:57:53,031 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 09:57:53,031 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 09:57:53,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 09:57:53 BasicIcfg [2023-01-28 09:57:53,034 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 09:57:53,034 INFO L158 Benchmark]: Toolchain (without parser) took 3664.60ms. Allocated memory was 390.1MB in the beginning and 694.2MB in the end (delta: 304.1MB). Free memory was 327.9MB in the beginning and 506.1MB in the end (delta: -178.2MB). Peak memory consumption was 128.3MB. Max. memory is 16.0GB. [2023-01-28 09:57:53,034 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 390.1MB. Free memory is still 336.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 09:57:53,035 INFO L158 Benchmark]: CACSL2BoogieTranslator took 143.69ms. Allocated memory is still 390.1MB. Free memory was 327.9MB in the beginning and 317.0MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 09:57:53,035 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.76ms. Allocated memory is still 390.1MB. Free memory was 317.0MB in the beginning and 315.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 09:57:53,035 INFO L158 Benchmark]: Boogie Preprocessor took 14.75ms. Allocated memory is still 390.1MB. Free memory was 315.3MB in the beginning and 314.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 09:57:53,036 INFO L158 Benchmark]: RCFGBuilder took 412.22ms. Allocated memory was 390.1MB in the beginning and 694.2MB in the end (delta: 304.1MB). Free memory was 314.0MB in the beginning and 655.3MB in the end (delta: -341.3MB). Peak memory consumption was 17.0MB. Max. memory is 16.0GB. [2023-01-28 09:57:53,036 INFO L158 Benchmark]: TraceAbstraction took 3066.63ms. Allocated memory is still 694.2MB. Free memory was 654.5MB in the beginning and 506.1MB in the end (delta: 148.4MB). Peak memory consumption was 149.1MB. Max. memory is 16.0GB. [2023-01-28 09:57:53,037 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 390.1MB. Free memory is still 336.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 143.69ms. Allocated memory is still 390.1MB. Free memory was 327.9MB in the beginning and 317.0MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 22.76ms. Allocated memory is still 390.1MB. Free memory was 317.0MB in the beginning and 315.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 14.75ms. Allocated memory is still 390.1MB. Free memory was 315.3MB in the beginning and 314.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 412.22ms. Allocated memory was 390.1MB in the beginning and 694.2MB in the end (delta: 304.1MB). Free memory was 314.0MB in the beginning and 655.3MB in the end (delta: -341.3MB). Peak memory consumption was 17.0MB. Max. memory is 16.0GB. * TraceAbstraction took 3066.63ms. Allocated memory is still 694.2MB. Free memory was 654.5MB in the beginning and 506.1MB in the end (delta: 148.4MB). Peak memory consumption was 149.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 85 PlacesBefore, 26 PlacesAfterwards, 77 TransitionsBefore, 16 TransitionsAfterwards, 360 CoEnabledTransitionPairs, 7 FixpointIterations, 41 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 517 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 489, independent: 475, independent conditional: 0, independent unconditional: 475, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 202, independent: 200, independent conditional: 0, independent unconditional: 200, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 489, independent: 275, independent conditional: 0, independent unconditional: 275, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 202, unknown conditional: 0, unknown unconditional: 202] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 17, Positive conditional cache size: 0, Positive unconditional cache size: 17, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 82]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 28 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 284 IncrementalHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 0 mSDtfsCounter, 284 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=2, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 1016 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 09:57:53,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...