/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 BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 03:28:34,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 03:28:34,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 03:28:34,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 03:28:34,902 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 03:28:34,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 03:28:34,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 03:28:34,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 03:28:34,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 03:28:34,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 03:28:34,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 03:28:34,916 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 03:28:34,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 03:28:34,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 03:28:34,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 03:28:34,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 03:28:34,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 03:28:34,920 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 03:28:34,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 03:28:34,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 03:28:34,927 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 03:28:34,928 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 03:28:34,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 03:28:34,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 03:28:34,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 03:28:34,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 03:28:34,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 03:28:34,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 03:28:34,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 03:28:34,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 03:28:34,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 03:28:34,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 03:28:34,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 03:28:34,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 03:28:34,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 03:28:34,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 03:28:34,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 03:28:34,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 03:28:34,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 03:28:34,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 03:28:34,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 03:28:34,942 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 03:28:34,959 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 03:28:34,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 03:28:34,960 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 03:28:34,961 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 03:28:34,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 03:28:34,961 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 03:28:34,962 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 03:28:34,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 03:28:34,962 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 03:28:34,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 03:28:34,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 03:28:34,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 03:28:34,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 03:28:34,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 03:28:34,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 03:28:34,963 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 03:28:34,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 03:28:34,963 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 03:28:34,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 03:28:34,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 03:28:34,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 03:28:34,963 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 03:28:34,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 03:28:34,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 03:28:34,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 03:28:34,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 03:28:34,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 03:28:34,964 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 03:28:34,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 03:28:34,964 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 03:28:34,964 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 03:28:34,964 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 03:28:35,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 03:28:35,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 03:28:35,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 03:28:35,162 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 03:28:35,163 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 03:28:35,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2023-01-28 03:28:36,013 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 03:28:36,203 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 03:28:36,203 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2023-01-28 03:28:36,207 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bb2d967e/d3764bc511c7430994e88fbbc3703d0c/FLAGaf01a582a [2023-01-28 03:28:36,631 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bb2d967e/d3764bc511c7430994e88fbbc3703d0c [2023-01-28 03:28:36,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 03:28:36,634 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 03:28:36,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 03:28:36,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 03:28:36,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 03:28:36,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 03:28:36" (1/1) ... [2023-01-28 03:28:36,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@541479f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:28:36, skipping insertion in model container [2023-01-28 03:28:36,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 03:28:36" (1/1) ... [2023-01-28 03:28:36,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 03:28:36,661 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 03:28:36,763 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-misc-3.wvr.c[2410,2423] [2023-01-28 03:28:36,766 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 03:28:36,772 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 03:28:36,785 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-misc-3.wvr.c[2410,2423] [2023-01-28 03:28:36,786 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 03:28:36,791 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 03:28:36,791 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 03:28:36,796 INFO L208 MainTranslator]: Completed translation [2023-01-28 03:28:36,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:28:36 WrapperNode [2023-01-28 03:28:36,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 03:28:36,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 03:28:36,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 03:28:36,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 03:28:36,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:28:36" (1/1) ... [2023-01-28 03:28:36,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:28:36" (1/1) ... [2023-01-28 03:28:36,830 INFO L138 Inliner]: procedures = 21, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2023-01-28 03:28:36,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 03:28:36,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 03:28:36,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 03:28:36,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 03:28:36,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:28:36" (1/1) ... [2023-01-28 03:28:36,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:28:36" (1/1) ... [2023-01-28 03:28:36,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:28:36" (1/1) ... [2023-01-28 03:28:36,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:28:36" (1/1) ... [2023-01-28 03:28:36,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:28:36" (1/1) ... [2023-01-28 03:28:36,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:28:36" (1/1) ... [2023-01-28 03:28:36,845 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:28:36" (1/1) ... [2023-01-28 03:28:36,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:28:36" (1/1) ... [2023-01-28 03:28:36,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 03:28:36,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 03:28:36,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 03:28:36,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 03:28:36,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:28:36" (1/1) ... [2023-01-28 03:28:36,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 03:28:36,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:28:36,874 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 03:28:36,876 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 03:28:36,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 03:28:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 03:28:36,917 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 03:28:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 03:28:36,917 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 03:28:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 03:28:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 03:28:36,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 03:28:36,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 03:28:36,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 03:28:36,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 03:28:36,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 03:28:36,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 03:28:36,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 03:28:36,923 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 03:28:37,023 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 03:28:37,024 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 03:28:37,199 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 03:28:37,215 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 03:28:37,216 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-28 03:28:37,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 03:28:37 BoogieIcfgContainer [2023-01-28 03:28:37,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 03:28:37,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 03:28:37,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 03:28:37,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 03:28:37,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 03:28:36" (1/3) ... [2023-01-28 03:28:37,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@569ef5a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 03:28:37, skipping insertion in model container [2023-01-28 03:28:37,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:28:36" (2/3) ... [2023-01-28 03:28:37,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@569ef5a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 03:28:37, skipping insertion in model container [2023-01-28 03:28:37,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 03:28:37" (3/3) ... [2023-01-28 03:28:37,223 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2023-01-28 03:28:37,235 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 03:28:37,235 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 03:28:37,235 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 03:28:37,279 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 03:28:37,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 92 transitions, 200 flow [2023-01-28 03:28:37,336 INFO L130 PetriNetUnfolder]: 11/90 cut-off events. [2023-01-28 03:28:37,336 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 03:28:37,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 90 events. 11/90 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 104 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2023-01-28 03:28:37,340 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 92 transitions, 200 flow [2023-01-28 03:28:37,343 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 82 transitions, 176 flow [2023-01-28 03:28:37,345 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 03:28:37,351 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 82 transitions, 176 flow [2023-01-28 03:28:37,353 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 82 transitions, 176 flow [2023-01-28 03:28:37,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 82 transitions, 176 flow [2023-01-28 03:28:37,371 INFO L130 PetriNetUnfolder]: 11/82 cut-off events. [2023-01-28 03:28:37,371 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 03:28:37,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 82 events. 11/82 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 101 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2023-01-28 03:28:37,373 INFO L119 LiptonReduction]: Number of co-enabled transitions 1188 [2023-01-28 03:28:39,558 INFO L134 LiptonReduction]: Checked pairs total: 1141 [2023-01-28 03:28:39,558 INFO L136 LiptonReduction]: Total number of compositions: 81 [2023-01-28 03:28:39,588 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 03:28:39,592 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;@58eb3e2a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 03:28:39,592 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 03:28:39,595 INFO L130 PetriNetUnfolder]: 2/12 cut-off events. [2023-01-28 03:28:39,595 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 03:28:39,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:28:39,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:28:39,596 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:28:39,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:28:39,603 INFO L85 PathProgramCache]: Analyzing trace with hash 941425486, now seen corresponding path program 1 times [2023-01-28 03:28:39,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:28:39,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019235228] [2023-01-28 03:28:39,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:28:39,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:28:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:28:39,840 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 03:28:39,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:28:39,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019235228] [2023-01-28 03:28:39,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019235228] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:28:39,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:28:39,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 03:28:39,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971441702] [2023-01-28 03:28:39,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:28:39,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 03:28:39,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:28:39,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 03:28:39,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 03:28:39,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 173 [2023-01-28 03:28:39,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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 03:28:39,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:28:39,866 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 173 [2023-01-28 03:28:39,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:28:39,895 INFO L130 PetriNetUnfolder]: 29/54 cut-off events. [2023-01-28 03:28:39,896 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-01-28 03:28:39,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 54 events. 29/54 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 88 event pairs, 1 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 90. Up to 45 conditions per place. [2023-01-28 03:28:39,897 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 17 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2023-01-28 03:28:39,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 19 transitions, 91 flow [2023-01-28 03:28:39,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 03:28:39,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 03:28:39,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 251 transitions. [2023-01-28 03:28:39,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4836223506743738 [2023-01-28 03:28:39,907 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 251 transitions. [2023-01-28 03:28:39,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 251 transitions. [2023-01-28 03:28:39,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:28:39,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 251 transitions. [2023-01-28 03:28:39,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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 03:28:39,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 03:28:39,914 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 03:28:39,915 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 38 flow. Second operand 3 states and 251 transitions. [2023-01-28 03:28:39,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 19 transitions, 91 flow [2023-01-28 03:28:39,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 19 transitions, 81 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 03:28:39,918 INFO L231 Difference]: Finished difference. Result has 17 places, 14 transitions, 42 flow [2023-01-28 03:28:39,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=17, PETRI_TRANSITIONS=14} [2023-01-28 03:28:39,922 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -1 predicate places. [2023-01-28 03:28:39,922 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 14 transitions, 42 flow [2023-01-28 03:28:39,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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 03:28:39,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:28:39,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:28:39,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 03:28:39,923 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:28:39,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:28:39,923 INFO L85 PathProgramCache]: Analyzing trace with hash 789177524, now seen corresponding path program 1 times [2023-01-28 03:28:39,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:28:39,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623161409] [2023-01-28 03:28:39,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:28:39,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:28:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:28:40,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:28:40,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:28:40,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623161409] [2023-01-28 03:28:40,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623161409] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:28:40,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:28:40,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 03:28:40,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718687019] [2023-01-28 03:28:40,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:28:40,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 03:28:40,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:28:40,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 03:28:40,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 03:28:40,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 173 [2023-01-28 03:28:40,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 14 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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 03:28:40,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:28:40,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 173 [2023-01-28 03:28:40,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:28:40,051 INFO L130 PetriNetUnfolder]: 40/73 cut-off events. [2023-01-28 03:28:40,052 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-01-28 03:28:40,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 73 events. 40/73 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 139 event pairs, 6 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 112. Up to 49 conditions per place. [2023-01-28 03:28:40,053 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-01-28 03:28:40,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 21 transitions, 106 flow [2023-01-28 03:28:40,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 03:28:40,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 03:28:40,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 251 transitions. [2023-01-28 03:28:40,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4836223506743738 [2023-01-28 03:28:40,058 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 251 transitions. [2023-01-28 03:28:40,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 251 transitions. [2023-01-28 03:28:40,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:28:40,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 251 transitions. [2023-01-28 03:28:40,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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 03:28:40,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 03:28:40,063 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 03:28:40,063 INFO L175 Difference]: Start difference. First operand has 17 places, 14 transitions, 42 flow. Second operand 3 states and 251 transitions. [2023-01-28 03:28:40,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 21 transitions, 106 flow [2023-01-28 03:28:40,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 21 transitions, 103 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 03:28:40,064 INFO L231 Difference]: Finished difference. Result has 19 places, 15 transitions, 52 flow [2023-01-28 03:28:40,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=19, PETRI_TRANSITIONS=15} [2023-01-28 03:28:40,065 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 1 predicate places. [2023-01-28 03:28:40,065 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 15 transitions, 52 flow [2023-01-28 03:28:40,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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 03:28:40,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:28:40,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:28:40,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 03:28:40,066 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:28:40,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:28:40,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1336220021, now seen corresponding path program 1 times [2023-01-28 03:28:40,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:28:40,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157372808] [2023-01-28 03:28:40,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:28:40,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:28:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:28:40,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:28:40,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:28:40,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157372808] [2023-01-28 03:28:40,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157372808] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:28:40,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568034509] [2023-01-28 03:28:40,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:28:40,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:40,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:28:40,311 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:28:40,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 03:28:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:28:40,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 03:28:40,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:28:40,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:28:40,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:28:40,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:28:40,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568034509] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:28:40,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:28:40,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 7 [2023-01-28 03:28:40,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369345142] [2023-01-28 03:28:40,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:28:40,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 03:28:40,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:28:40,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 03:28:40,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-01-28 03:28:40,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 173 [2023-01-28 03:28:40,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 15 transitions, 52 flow. Second operand has 8 states, 8 states have (on average 68.5) internal successors, (548), 8 states have internal predecessors, (548), 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 03:28:40,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:28:40,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 173 [2023-01-28 03:28:40,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:28:41,096 INFO L130 PetriNetUnfolder]: 61/110 cut-off events. [2023-01-28 03:28:41,096 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-01-28 03:28:41,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 110 events. 61/110 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 253 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 84. Up to 45 conditions per place. [2023-01-28 03:28:41,097 INFO L137 encePairwiseOnDemand]: 168/173 looper letters, 36 selfloop transitions, 11 changer transitions 0/47 dead transitions. [2023-01-28 03:28:41,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 47 transitions, 245 flow [2023-01-28 03:28:41,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 03:28:41,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 03:28:41,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 566 transitions. [2023-01-28 03:28:41,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40895953757225434 [2023-01-28 03:28:41,099 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 566 transitions. [2023-01-28 03:28:41,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 566 transitions. [2023-01-28 03:28:41,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:28:41,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 566 transitions. [2023-01-28 03:28:41,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 70.75) internal successors, (566), 8 states have internal predecessors, (566), 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 03:28:41,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 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 03:28:41,102 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 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 03:28:41,102 INFO L175 Difference]: Start difference. First operand has 19 places, 15 transitions, 52 flow. Second operand 8 states and 566 transitions. [2023-01-28 03:28:41,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 47 transitions, 245 flow [2023-01-28 03:28:41,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 47 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 03:28:41,103 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 125 flow [2023-01-28 03:28:41,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=125, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2023-01-28 03:28:41,104 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 10 predicate places. [2023-01-28 03:28:41,104 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 125 flow [2023-01-28 03:28:41,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 68.5) internal successors, (548), 8 states have internal predecessors, (548), 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 03:28:41,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:28:41,105 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:28:41,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 03:28:41,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:41,306 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:28:41,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:28:41,306 INFO L85 PathProgramCache]: Analyzing trace with hash 728758898, now seen corresponding path program 2 times [2023-01-28 03:28:41,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:28:41,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460400404] [2023-01-28 03:28:41,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:28:41,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:28:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:28:41,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:28:41,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:28:41,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460400404] [2023-01-28 03:28:41,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460400404] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:28:41,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864442137] [2023-01-28 03:28:41,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:28:41,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:41,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:28:41,430 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:28:41,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 03:28:41,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:28:41,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:28:41,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 03:28:41,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:28:41,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:28:41,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:28:41,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:28:41,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864442137] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:28:41,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:28:41,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 6] total 10 [2023-01-28 03:28:41,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337061785] [2023-01-28 03:28:41,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:28:41,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 03:28:41,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:28:41,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 03:28:41,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-01-28 03:28:41,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 173 [2023-01-28 03:28:41,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 125 flow. Second operand has 11 states, 11 states have (on average 60.90909090909091) internal successors, (670), 11 states have internal predecessors, (670), 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 03:28:41,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:28:41,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 173 [2023-01-28 03:28:41,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:28:42,039 INFO L130 PetriNetUnfolder]: 91/170 cut-off events. [2023-01-28 03:28:42,039 INFO L131 PetriNetUnfolder]: For 190/190 co-relation queries the response was YES. [2023-01-28 03:28:42,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 170 events. 91/170 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 483 event pairs, 2 based on Foata normal form. 16/176 useless extension candidates. Maximal degree in co-relation 257. Up to 67 conditions per place. [2023-01-28 03:28:42,041 INFO L137 encePairwiseOnDemand]: 168/173 looper letters, 41 selfloop transitions, 26 changer transitions 0/67 dead transitions. [2023-01-28 03:28:42,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 67 transitions, 436 flow [2023-01-28 03:28:42,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 03:28:42,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 03:28:42,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 820 transitions. [2023-01-28 03:28:42,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36460649177412185 [2023-01-28 03:28:42,044 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 820 transitions. [2023-01-28 03:28:42,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 820 transitions. [2023-01-28 03:28:42,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:28:42,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 820 transitions. [2023-01-28 03:28:42,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 63.07692307692308) internal successors, (820), 13 states have internal predecessors, (820), 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 03:28:42,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 173.0) internal successors, (2422), 14 states have internal predecessors, (2422), 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 03:28:42,049 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 173.0) internal successors, (2422), 14 states have internal predecessors, (2422), 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 03:28:42,049 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 125 flow. Second operand 13 states and 820 transitions. [2023-01-28 03:28:42,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 67 transitions, 436 flow [2023-01-28 03:28:42,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 67 transitions, 382 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-01-28 03:28:42,052 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 285 flow [2023-01-28 03:28:42,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=285, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-01-28 03:28:42,052 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 26 predicate places. [2023-01-28 03:28:42,052 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 285 flow [2023-01-28 03:28:42,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 60.90909090909091) internal successors, (670), 11 states have internal predecessors, (670), 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 03:28:42,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:28:42,053 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:28:42,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 03:28:42,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-01-28 03:28:42,258 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:28:42,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:28:42,258 INFO L85 PathProgramCache]: Analyzing trace with hash 793394256, now seen corresponding path program 3 times [2023-01-28 03:28:42,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:28:42,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609705744] [2023-01-28 03:28:42,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:28:42,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:28:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:28:42,675 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:28:42,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:28:42,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609705744] [2023-01-28 03:28:42,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609705744] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:28:42,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571037407] [2023-01-28 03:28:42,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 03:28:42,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:42,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:28:42,677 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:28:42,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 03:28:42,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 03:28:42,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:28:42,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-28 03:28:42,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:28:42,849 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:28:42,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:28:43,257 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:28:43,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571037407] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:28:43,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:28:43,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 14 [2023-01-28 03:28:43,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692086312] [2023-01-28 03:28:43,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:28:43,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 03:28:43,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:28:43,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 03:28:43,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2023-01-28 03:28:43,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 173 [2023-01-28 03:28:43,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 285 flow. Second operand has 16 states, 16 states have (on average 56.3125) internal successors, (901), 16 states have internal predecessors, (901), 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 03:28:43,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:28:43,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 173 [2023-01-28 03:28:43,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:28:43,838 INFO L130 PetriNetUnfolder]: 194/365 cut-off events. [2023-01-28 03:28:43,838 INFO L131 PetriNetUnfolder]: For 838/838 co-relation queries the response was YES. [2023-01-28 03:28:43,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1591 conditions, 365 events. 194/365 cut-off events. For 838/838 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1432 event pairs, 4 based on Foata normal form. 10/375 useless extension candidates. Maximal degree in co-relation 1022. Up to 103 conditions per place. [2023-01-28 03:28:43,841 INFO L137 encePairwiseOnDemand]: 167/173 looper letters, 50 selfloop transitions, 54 changer transitions 30/134 dead transitions. [2023-01-28 03:28:43,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 134 transitions, 1100 flow [2023-01-28 03:28:43,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-01-28 03:28:43,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-01-28 03:28:43,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1181 transitions. [2023-01-28 03:28:43,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34132947976878614 [2023-01-28 03:28:43,844 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1181 transitions. [2023-01-28 03:28:43,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1181 transitions. [2023-01-28 03:28:43,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:28:43,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1181 transitions. [2023-01-28 03:28:43,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 59.05) internal successors, (1181), 20 states have internal predecessors, (1181), 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 03:28:43,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 173.0) internal successors, (3633), 21 states have internal predecessors, (3633), 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 03:28:43,850 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 173.0) internal successors, (3633), 21 states have internal predecessors, (3633), 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 03:28:43,850 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 285 flow. Second operand 20 states and 1181 transitions. [2023-01-28 03:28:43,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 134 transitions, 1100 flow [2023-01-28 03:28:43,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 134 transitions, 1000 flow, removed 34 selfloop flow, removed 6 redundant places. [2023-01-28 03:28:43,855 INFO L231 Difference]: Finished difference. Result has 63 places, 70 transitions, 670 flow [2023-01-28 03:28:43,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=670, PETRI_PLACES=63, PETRI_TRANSITIONS=70} [2023-01-28 03:28:43,856 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 45 predicate places. [2023-01-28 03:28:43,856 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 70 transitions, 670 flow [2023-01-28 03:28:43,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 56.3125) internal successors, (901), 16 states have internal predecessors, (901), 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 03:28:43,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:28:43,856 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:28:43,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 03:28:44,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:44,061 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:28:44,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:28:44,062 INFO L85 PathProgramCache]: Analyzing trace with hash -2120211330, now seen corresponding path program 4 times [2023-01-28 03:28:44,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:28:44,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381850520] [2023-01-28 03:28:44,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:28:44,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:28:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:28:44,473 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:28:44,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:28:44,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381850520] [2023-01-28 03:28:44,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381850520] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:28:44,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144845806] [2023-01-28 03:28:44,473 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:28:44,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:44,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:28:44,474 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:28:44,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 03:28:44,520 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:28:44,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:28:44,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-28 03:28:44,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:28:44,660 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:28:44,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:28:45,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:28:45,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144845806] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:28:45,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:28:45,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-01-28 03:28:45,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601854275] [2023-01-28 03:28:45,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:28:45,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 03:28:45,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:28:45,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 03:28:45,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-01-28 03:28:45,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 173 [2023-01-28 03:28:45,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 70 transitions, 670 flow. Second operand has 18 states, 18 states have (on average 56.166666666666664) internal successors, (1011), 18 states have internal predecessors, (1011), 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 03:28:45,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:28:45,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 173 [2023-01-28 03:28:45,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:28:45,436 INFO L130 PetriNetUnfolder]: 130/236 cut-off events. [2023-01-28 03:28:45,436 INFO L131 PetriNetUnfolder]: For 761/761 co-relation queries the response was YES. [2023-01-28 03:28:45,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1213 conditions, 236 events. 130/236 cut-off events. For 761/761 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 769 event pairs, 0 based on Foata normal form. 19/255 useless extension candidates. Maximal degree in co-relation 1197. Up to 73 conditions per place. [2023-01-28 03:28:45,437 INFO L137 encePairwiseOnDemand]: 167/173 looper letters, 0 selfloop transitions, 0 changer transitions 86/86 dead transitions. [2023-01-28 03:28:45,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 86 transitions, 875 flow [2023-01-28 03:28:45,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 03:28:45,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 03:28:45,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 587 transitions. [2023-01-28 03:28:45,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393063583815029 [2023-01-28 03:28:45,439 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 587 transitions. [2023-01-28 03:28:45,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 587 transitions. [2023-01-28 03:28:45,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:28:45,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 587 transitions. [2023-01-28 03:28:45,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.7) internal successors, (587), 10 states have internal predecessors, (587), 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 03:28:45,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 173.0) internal successors, (1903), 11 states have internal predecessors, (1903), 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 03:28:45,442 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 173.0) internal successors, (1903), 11 states have internal predecessors, (1903), 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 03:28:45,442 INFO L175 Difference]: Start difference. First operand has 63 places, 70 transitions, 670 flow. Second operand 10 states and 587 transitions. [2023-01-28 03:28:45,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 86 transitions, 875 flow [2023-01-28 03:28:45,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 86 transitions, 693 flow, removed 60 selfloop flow, removed 9 redundant places. [2023-01-28 03:28:45,446 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2023-01-28 03:28:45,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2023-01-28 03:28:45,446 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 37 predicate places. [2023-01-28 03:28:45,446 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2023-01-28 03:28:45,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 56.166666666666664) internal successors, (1011), 18 states have internal predecessors, (1011), 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 03:28:45,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 03:28:45,449 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 03:28:45,449 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 03:28:45,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-01-28 03:28:45,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:45,653 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2023-01-28 03:28:45,656 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 03:28:45,656 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 03:28:45,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 03:28:45 BasicIcfg [2023-01-28 03:28:45,658 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 03:28:45,658 INFO L158 Benchmark]: Toolchain (without parser) took 9024.03ms. Allocated memory was 509.6MB in the beginning and 612.4MB in the end (delta: 102.8MB). Free memory was 470.9MB in the beginning and 403.8MB in the end (delta: 67.1MB). Peak memory consumption was 170.2MB. Max. memory is 16.0GB. [2023-01-28 03:28:45,658 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 367.0MB. Free memory is still 316.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 03:28:45,658 INFO L158 Benchmark]: CACSL2BoogieTranslator took 159.54ms. Allocated memory is still 509.6MB. Free memory was 470.5MB in the beginning and 459.7MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 03:28:45,658 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.04ms. Allocated memory is still 509.6MB. Free memory was 459.7MB in the beginning and 458.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 03:28:45,659 INFO L158 Benchmark]: Boogie Preprocessor took 16.03ms. Allocated memory is still 509.6MB. Free memory was 458.0MB in the beginning and 456.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 03:28:45,659 INFO L158 Benchmark]: RCFGBuilder took 365.21ms. Allocated memory is still 509.6MB. Free memory was 456.9MB in the beginning and 442.9MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-28 03:28:45,659 INFO L158 Benchmark]: TraceAbstraction took 8438.96ms. Allocated memory was 509.6MB in the beginning and 612.4MB in the end (delta: 102.8MB). Free memory was 442.2MB in the beginning and 403.8MB in the end (delta: 38.4MB). Peak memory consumption was 140.8MB. Max. memory is 16.0GB. [2023-01-28 03:28:45,660 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 367.0MB. Free memory is still 316.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 159.54ms. Allocated memory is still 509.6MB. Free memory was 470.5MB in the beginning and 459.7MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 33.04ms. Allocated memory is still 509.6MB. Free memory was 459.7MB in the beginning and 458.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 16.03ms. Allocated memory is still 509.6MB. Free memory was 458.0MB in the beginning and 456.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 365.21ms. Allocated memory is still 509.6MB. Free memory was 456.9MB in the beginning and 442.9MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 8438.96ms. Allocated memory was 509.6MB in the beginning and 612.4MB in the end (delta: 102.8MB). Free memory was 442.2MB in the beginning and 403.8MB in the end (delta: 38.4MB). Peak memory consumption was 140.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 78 PlacesBefore, 18 PlacesAfterwards, 82 TransitionsBefore, 13 TransitionsAfterwards, 1188 CoEnabledTransitionPairs, 6 FixpointIterations, 29 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 6 ConcurrentYvCompositions, 9 ChoiceCompositions, 81 TotalNumberOfCompositions, 1141 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1095, independent: 1089, independent conditional: 0, independent unconditional: 1089, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 617, independent: 614, independent conditional: 0, independent unconditional: 614, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1095, independent: 475, independent conditional: 0, independent unconditional: 475, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 617, unknown conditional: 0, unknown unconditional: 617] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 101]: 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 5 procedures, 112 locations, 3 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: 8.3s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 261 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 261 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 85 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 706 IncrementalHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 85 mSolverCounterUnsat, 0 mSDtfsCounter, 706 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 75 SyntacticMatches, 6 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=670occurred in iteration=5, InterpolantAutomatonStates: 57, 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, 0.2s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 1809 SizeOfPredicates, 23 NumberOfNonLiveVariables, 453 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 11/55 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 03:28:45,679 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...