/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 07:48:15,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 07:48:15,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 07:48:15,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 07:48:15,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 07:48:15,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 07:48:15,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 07:48:15,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 07:48:15,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 07:48:15,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 07:48:15,087 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 07:48:15,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 07:48:15,088 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 07:48:15,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 07:48:15,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 07:48:15,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 07:48:15,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 07:48:15,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 07:48:15,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 07:48:15,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 07:48:15,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 07:48:15,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 07:48:15,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 07:48:15,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 07:48:15,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 07:48:15,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 07:48:15,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 07:48:15,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 07:48:15,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 07:48:15,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 07:48:15,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 07:48:15,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 07:48:15,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 07:48:15,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 07:48:15,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 07:48:15,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 07:48:15,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 07:48:15,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 07:48:15,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 07:48:15,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 07:48:15,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 07:48:15,112 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 07:48:15,132 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 07:48:15,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 07:48:15,133 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 07:48:15,133 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 07:48:15,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 07:48:15,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 07:48:15,134 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 07:48:15,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 07:48:15,134 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 07:48:15,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 07:48:15,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 07:48:15,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 07:48:15,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 07:48:15,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 07:48:15,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 07:48:15,135 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 07:48:15,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 07:48:15,135 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 07:48:15,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 07:48:15,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 07:48:15,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 07:48:15,135 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 07:48:15,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 07:48:15,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:48:15,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 07:48:15,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 07:48:15,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 07:48:15,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 07:48:15,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 07:48:15,136 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 07:48:15,136 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 07:48:15,136 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 07:48:15,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 07:48:15,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 07:48:15,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 07:48:15,336 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 07:48:15,337 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 07:48:15,338 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.i [2023-01-28 07:48:16,328 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 07:48:16,505 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 07:48:16,506 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.i [2023-01-28 07:48:16,518 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6e3a876b/0fa6093ed96945bea53ca7087494640c/FLAGae720cf8c [2023-01-28 07:48:16,530 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6e3a876b/0fa6093ed96945bea53ca7087494640c [2023-01-28 07:48:16,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 07:48:16,532 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 07:48:16,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 07:48:16,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 07:48:16,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 07:48:16,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:48:16" (1/1) ... [2023-01-28 07:48:16,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3418c3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:48:16, skipping insertion in model container [2023-01-28 07:48:16,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:48:16" (1/1) ... [2023-01-28 07:48:16,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 07:48:16,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 07:48:16,814 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.i[30176,30189] [2023-01-28 07:48:16,833 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:48:16,847 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 07:48:16,876 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.i[30176,30189] [2023-01-28 07:48:16,890 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:48:16,921 INFO L208 MainTranslator]: Completed translation [2023-01-28 07:48:16,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:48:16 WrapperNode [2023-01-28 07:48:16,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 07:48:16,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 07:48:16,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 07:48:16,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 07:48:16,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:48:16" (1/1) ... [2023-01-28 07:48:16,951 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:48:16" (1/1) ... [2023-01-28 07:48:16,977 INFO L138 Inliner]: procedures = 172, calls = 50, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 218 [2023-01-28 07:48:16,978 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 07:48:16,978 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 07:48:16,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 07:48:16,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 07:48:16,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:48:16" (1/1) ... [2023-01-28 07:48:16,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:48:16" (1/1) ... [2023-01-28 07:48:16,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:48:16" (1/1) ... [2023-01-28 07:48:16,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:48:16" (1/1) ... [2023-01-28 07:48:17,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:48:16" (1/1) ... [2023-01-28 07:48:17,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:48:16" (1/1) ... [2023-01-28 07:48:17,016 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:48:16" (1/1) ... [2023-01-28 07:48:17,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:48:16" (1/1) ... [2023-01-28 07:48:17,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 07:48:17,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 07:48:17,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 07:48:17,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 07:48:17,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:48:16" (1/1) ... [2023-01-28 07:48:17,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:48:17,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:48:17,075 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 07:48:17,084 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 07:48:17,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 07:48:17,105 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-01-28 07:48:17,105 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-01-28 07:48:17,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 07:48:17,105 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 07:48:17,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 07:48:17,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 07:48:17,105 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-01-28 07:48:17,105 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-01-28 07:48:17,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 07:48:17,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 07:48:17,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 07:48:17,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 07:48:17,106 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 07:48:17,258 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 07:48:17,259 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 07:48:17,443 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 07:48:17,464 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 07:48:17,464 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-01-28 07:48:17,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:48:17 BoogieIcfgContainer [2023-01-28 07:48:17,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 07:48:17,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 07:48:17,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 07:48:17,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 07:48:17,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 07:48:16" (1/3) ... [2023-01-28 07:48:17,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414f89ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:48:17, skipping insertion in model container [2023-01-28 07:48:17,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:48:16" (2/3) ... [2023-01-28 07:48:17,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414f89ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:48:17, skipping insertion in model container [2023-01-28 07:48:17,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:48:17" (3/3) ... [2023-01-28 07:48:17,471 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_09-ptrmunge_racing.i [2023-01-28 07:48:17,483 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 07:48:17,483 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-28 07:48:17,483 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 07:48:17,576 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 07:48:17,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 215 transitions, 452 flow [2023-01-28 07:48:17,729 INFO L130 PetriNetUnfolder]: 58/380 cut-off events. [2023-01-28 07:48:17,729 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2023-01-28 07:48:17,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 380 events. 58/380 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1612 event pairs, 0 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 203. Up to 8 conditions per place. [2023-01-28 07:48:17,737 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 215 transitions, 452 flow [2023-01-28 07:48:17,742 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 188 places, 215 transitions, 452 flow [2023-01-28 07:48:17,744 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:48:17,755 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 188 places, 215 transitions, 452 flow [2023-01-28 07:48:17,760 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 188 places, 215 transitions, 452 flow [2023-01-28 07:48:17,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 215 transitions, 452 flow [2023-01-28 07:48:17,812 INFO L130 PetriNetUnfolder]: 58/380 cut-off events. [2023-01-28 07:48:17,813 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2023-01-28 07:48:17,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 380 events. 58/380 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1612 event pairs, 0 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 203. Up to 8 conditions per place. [2023-01-28 07:48:17,828 INFO L119 LiptonReduction]: Number of co-enabled transitions 18788 [2023-01-28 07:48:21,117 INFO L134 LiptonReduction]: Checked pairs total: 31275 [2023-01-28 07:48:21,118 INFO L136 LiptonReduction]: Total number of compositions: 160 [2023-01-28 07:48:21,127 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:48:21,131 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;@13f4ad5e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:48:21,131 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 07:48:21,135 INFO L130 PetriNetUnfolder]: 4/38 cut-off events. [2023-01-28 07:48:21,135 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:48:21,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:48:21,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:48:21,136 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-01-28 07:48:21,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:48:21,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1082931895, now seen corresponding path program 1 times [2023-01-28 07:48:21,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:48:21,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682985194] [2023-01-28 07:48:21,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:48:21,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:48:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:48:21,512 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 07:48:21,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:48:21,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682985194] [2023-01-28 07:48:21,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682985194] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:48:21,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:48:21,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:48:21,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760909935] [2023-01-28 07:48:21,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:48:21,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:48:21,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:48:21,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:48:21,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:48:21,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 375 [2023-01-28 07:48:21,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 79 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 141.2) internal successors, (706), 5 states have internal predecessors, (706), 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 07:48:21,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:48:21,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 375 [2023-01-28 07:48:21,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:48:22,206 INFO L130 PetriNetUnfolder]: 4671/7772 cut-off events. [2023-01-28 07:48:22,207 INFO L131 PetriNetUnfolder]: For 193/193 co-relation queries the response was YES. [2023-01-28 07:48:22,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15228 conditions, 7772 events. 4671/7772 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 50365 event pairs, 3182 based on Foata normal form. 1075/7182 useless extension candidates. Maximal degree in co-relation 13924. Up to 5907 conditions per place. [2023-01-28 07:48:22,234 INFO L137 encePairwiseOnDemand]: 345/375 looper letters, 76 selfloop transitions, 8 changer transitions 43/138 dead transitions. [2023-01-28 07:48:22,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 138 transitions, 573 flow [2023-01-28 07:48:22,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 07:48:22,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 07:48:22,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1159 transitions. [2023-01-28 07:48:22,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44152380952380954 [2023-01-28 07:48:22,249 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1159 transitions. [2023-01-28 07:48:22,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1159 transitions. [2023-01-28 07:48:22,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:48:22,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1159 transitions. [2023-01-28 07:48:22,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 165.57142857142858) internal successors, (1159), 7 states have internal predecessors, (1159), 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 07:48:22,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 375.0) internal successors, (3000), 8 states have internal predecessors, (3000), 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 07:48:22,265 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 375.0) internal successors, (3000), 8 states have internal predecessors, (3000), 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 07:48:22,266 INFO L175 Difference]: Start difference. First operand has 58 places, 79 transitions, 180 flow. Second operand 7 states and 1159 transitions. [2023-01-28 07:48:22,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 138 transitions, 573 flow [2023-01-28 07:48:22,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 138 transitions, 573 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 07:48:22,273 INFO L231 Difference]: Finished difference. Result has 70 places, 66 transitions, 216 flow [2023-01-28 07:48:22,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=216, PETRI_PLACES=70, PETRI_TRANSITIONS=66} [2023-01-28 07:48:22,277 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 12 predicate places. [2023-01-28 07:48:22,277 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 66 transitions, 216 flow [2023-01-28 07:48:22,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 141.2) internal successors, (706), 5 states have internal predecessors, (706), 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 07:48:22,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:48:22,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:48:22,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 07:48:22,278 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-01-28 07:48:22,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:48:22,280 INFO L85 PathProgramCache]: Analyzing trace with hash -221684610, now seen corresponding path program 1 times [2023-01-28 07:48:22,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:48:22,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548507791] [2023-01-28 07:48:22,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:48:22,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:48:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:48:22,310 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 07:48:22,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:48:22,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548507791] [2023-01-28 07:48:22,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548507791] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:48:22,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:48:22,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:48:22,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169419584] [2023-01-28 07:48:22,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:48:22,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:48:22,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:48:22,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:48:22,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:48:22,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 375 [2023-01-28 07:48:22,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 66 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 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 07:48:22,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:48:22,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 375 [2023-01-28 07:48:22,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:48:22,818 INFO L130 PetriNetUnfolder]: 4058/7126 cut-off events. [2023-01-28 07:48:22,819 INFO L131 PetriNetUnfolder]: For 3188/3188 co-relation queries the response was YES. [2023-01-28 07:48:22,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15960 conditions, 7126 events. 4058/7126 cut-off events. For 3188/3188 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 49156 event pairs, 3302 based on Foata normal form. 1/6302 useless extension candidates. Maximal degree in co-relation 15470. Up to 6273 conditions per place. [2023-01-28 07:48:22,841 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 64 selfloop transitions, 2 changer transitions 1/80 dead transitions. [2023-01-28 07:48:22,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 80 transitions, 392 flow [2023-01-28 07:48:22,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:48:22,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:48:22,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 583 transitions. [2023-01-28 07:48:22,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182222222222223 [2023-01-28 07:48:22,843 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 583 transitions. [2023-01-28 07:48:22,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 583 transitions. [2023-01-28 07:48:22,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:48:22,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 583 transitions. [2023-01-28 07:48:22,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 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 07:48:22,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 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 07:48:22,846 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 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 07:48:22,846 INFO L175 Difference]: Start difference. First operand has 70 places, 66 transitions, 216 flow. Second operand 3 states and 583 transitions. [2023-01-28 07:48:22,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 80 transitions, 392 flow [2023-01-28 07:48:22,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 80 transitions, 386 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-01-28 07:48:22,853 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 218 flow [2023-01-28 07:48:22,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2023-01-28 07:48:22,854 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 11 predicate places. [2023-01-28 07:48:22,854 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 218 flow [2023-01-28 07:48:22,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 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 07:48:22,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:48:22,854 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:48:22,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 07:48:22,855 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-01-28 07:48:22,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:48:22,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1321145184, now seen corresponding path program 1 times [2023-01-28 07:48:22,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:48:22,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545173134] [2023-01-28 07:48:22,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:48:22,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:48:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:48:23,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:48:23,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:48:23,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545173134] [2023-01-28 07:48:23,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545173134] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 07:48:23,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260235946] [2023-01-28 07:48:23,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:48:23,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:48:23,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:48:23,033 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 07:48:23,052 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 07:48:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:48:23,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 28 conjunts are in the unsatisfiable core [2023-01-28 07:48:23,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 07:48:23,205 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 07:48:23,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-01-28 07:48:23,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 07:48:23,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 07:48:23,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:48:23,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 07:48:23,359 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_40 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_40) |c_t1_funThread1of1ForFork1_munge_~v#1.base|) |c_t1_funThread1of1ForFork1_munge_~v#1.offset|) 0)) is different from false [2023-01-28 07:48:23,381 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_40 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_40) |c_~#global1~0.base|) |c_~#global1~0.offset|) 0)) is different from false [2023-01-28 07:48:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-01-28 07:48:23,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260235946] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 07:48:23,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 07:48:23,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2023-01-28 07:48:23,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220280018] [2023-01-28 07:48:23,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 07:48:23,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 07:48:23,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:48:23,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 07:48:23,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=39, Unknown=2, NotChecked=26, Total=90 [2023-01-28 07:48:23,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 375 [2023-01-28 07:48:23,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 218 flow. Second operand has 10 states, 10 states have (on average 142.3) internal successors, (1423), 10 states have internal predecessors, (1423), 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 07:48:23,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:48:23,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 375 [2023-01-28 07:48:23,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:48:24,017 INFO L130 PetriNetUnfolder]: 4543/7570 cut-off events. [2023-01-28 07:48:24,017 INFO L131 PetriNetUnfolder]: For 2448/2451 co-relation queries the response was YES. [2023-01-28 07:48:24,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17094 conditions, 7570 events. 4543/7570 cut-off events. For 2448/2451 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 49222 event pairs, 2537 based on Foata normal form. 2/6691 useless extension candidates. Maximal degree in co-relation 16969. Up to 5756 conditions per place. [2023-01-28 07:48:24,047 INFO L137 encePairwiseOnDemand]: 362/375 looper letters, 76 selfloop transitions, 11 changer transitions 30/127 dead transitions. [2023-01-28 07:48:24,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 127 transitions, 626 flow [2023-01-28 07:48:24,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 07:48:24,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 07:48:24,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 957 transitions. [2023-01-28 07:48:24,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42533333333333334 [2023-01-28 07:48:24,050 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 957 transitions. [2023-01-28 07:48:24,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 957 transitions. [2023-01-28 07:48:24,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:48:24,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 957 transitions. [2023-01-28 07:48:24,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 159.5) internal successors, (957), 6 states have internal predecessors, (957), 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 07:48:24,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 375.0) internal successors, (2625), 7 states have internal predecessors, (2625), 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 07:48:24,055 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 375.0) internal successors, (2625), 7 states have internal predecessors, (2625), 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 07:48:24,055 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 218 flow. Second operand 6 states and 957 transitions. [2023-01-28 07:48:24,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 127 transitions, 626 flow [2023-01-28 07:48:24,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 127 transitions, 616 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 07:48:24,063 INFO L231 Difference]: Finished difference. Result has 74 places, 68 transitions, 270 flow [2023-01-28 07:48:24,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=270, PETRI_PLACES=74, PETRI_TRANSITIONS=68} [2023-01-28 07:48:24,064 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 16 predicate places. [2023-01-28 07:48:24,064 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 68 transitions, 270 flow [2023-01-28 07:48:24,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 142.3) internal successors, (1423), 10 states have internal predecessors, (1423), 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 07:48:24,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:48:24,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:48:24,075 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 07:48:24,272 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 07:48:24,273 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-01-28 07:48:24,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:48:24,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1253238702, now seen corresponding path program 1 times [2023-01-28 07:48:24,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:48:24,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160936790] [2023-01-28 07:48:24,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:48:24,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:48:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:48:24,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:48:24,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:48:24,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160936790] [2023-01-28 07:48:24,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160936790] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 07:48:24,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791122880] [2023-01-28 07:48:24,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:48:24,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:48:24,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:48:24,329 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 07:48:24,335 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 07:48:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:48:24,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-28 07:48:24,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 07:48:24,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:48:24,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 07:48:24,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:48:24,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791122880] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 07:48:24,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 07:48:24,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-01-28 07:48:24,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514926679] [2023-01-28 07:48:24,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 07:48:24,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 07:48:24,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:48:24,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 07:48:24,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 07:48:24,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 375 [2023-01-28 07:48:24,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 68 transitions, 270 flow. Second operand has 7 states, 7 states have (on average 176.57142857142858) internal successors, (1236), 7 states have internal predecessors, (1236), 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 07:48:24,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:48:24,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 375 [2023-01-28 07:48:24,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:48:24,466 INFO L130 PetriNetUnfolder]: 20/77 cut-off events. [2023-01-28 07:48:24,466 INFO L131 PetriNetUnfolder]: For 102/102 co-relation queries the response was YES. [2023-01-28 07:48:24,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 77 events. 20/77 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 192 event pairs, 5 based on Foata normal form. 15/92 useless extension candidates. Maximal degree in co-relation 211. Up to 50 conditions per place. [2023-01-28 07:48:24,466 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2023-01-28 07:48:24,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 35 transitions, 199 flow [2023-01-28 07:48:24,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:48:24,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:48:24,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 728 transitions. [2023-01-28 07:48:24,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48533333333333334 [2023-01-28 07:48:24,468 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 728 transitions. [2023-01-28 07:48:24,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 728 transitions. [2023-01-28 07:48:24,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:48:24,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 728 transitions. [2023-01-28 07:48:24,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 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 07:48:24,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 375.0) internal successors, (1875), 5 states have internal predecessors, (1875), 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 07:48:24,472 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 375.0) internal successors, (1875), 5 states have internal predecessors, (1875), 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 07:48:24,472 INFO L175 Difference]: Start difference. First operand has 74 places, 68 transitions, 270 flow. Second operand 4 states and 728 transitions. [2023-01-28 07:48:24,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 35 transitions, 199 flow [2023-01-28 07:48:24,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 35 transitions, 143 flow, removed 4 selfloop flow, removed 12 redundant places. [2023-01-28 07:48:24,473 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2023-01-28 07:48:24,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2023-01-28 07:48:24,475 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -29 predicate places. [2023-01-28 07:48:24,475 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2023-01-28 07:48:24,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 176.57142857142858) internal successors, (1236), 7 states have internal predecessors, (1236), 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 07:48:24,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 07:48:24,478 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-01-28 07:48:24,478 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-01-28 07:48:24,478 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-01-28 07:48:24,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-28 07:48:24,682 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 07:48:24,683 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-01-28 07:48:24,684 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE (1/2) [2023-01-28 07:48:24,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 215 transitions, 452 flow [2023-01-28 07:48:24,707 INFO L130 PetriNetUnfolder]: 58/380 cut-off events. [2023-01-28 07:48:24,707 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2023-01-28 07:48:24,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 380 events. 58/380 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1612 event pairs, 0 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 203. Up to 8 conditions per place. [2023-01-28 07:48:24,709 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 215 transitions, 452 flow [2023-01-28 07:48:24,710 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 188 places, 215 transitions, 452 flow [2023-01-28 07:48:24,710 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:48:24,710 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 188 places, 215 transitions, 452 flow [2023-01-28 07:48:24,711 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 188 places, 215 transitions, 452 flow [2023-01-28 07:48:24,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 215 transitions, 452 flow [2023-01-28 07:48:24,743 INFO L130 PetriNetUnfolder]: 58/380 cut-off events. [2023-01-28 07:48:24,743 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2023-01-28 07:48:24,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 380 events. 58/380 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1612 event pairs, 0 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 203. Up to 8 conditions per place. [2023-01-28 07:48:24,752 INFO L119 LiptonReduction]: Number of co-enabled transitions 18788 [2023-01-28 07:48:27,812 INFO L134 LiptonReduction]: Checked pairs total: 31330 [2023-01-28 07:48:27,812 INFO L136 LiptonReduction]: Total number of compositions: 160 [2023-01-28 07:48:27,814 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 07:48:27,814 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;@13f4ad5e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:48:27,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-28 07:48:27,816 INFO L130 PetriNetUnfolder]: 1/21 cut-off events. [2023-01-28 07:48:27,816 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:48:27,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:48:27,816 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-01-28 07:48:27,816 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 07:48:27,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:48:27,817 INFO L85 PathProgramCache]: Analyzing trace with hash 338306095, now seen corresponding path program 1 times [2023-01-28 07:48:27,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:48:27,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280168881] [2023-01-28 07:48:27,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:48:27,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:48:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 07:48:27,831 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 07:48:27,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 07:48:27,847 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 07:48:27,847 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 07:48:27,847 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-01-28 07:48:27,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-01-28 07:48:27,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 07:48:27,848 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 07:48:27,848 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (2/2) [2023-01-28 07:48:27,849 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 07:48:27,849 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-01-28 07:48:27,880 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-01-28 07:48:27,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 343 transitions, 734 flow [2023-01-28 07:48:27,986 INFO L130 PetriNetUnfolder]: 197/1103 cut-off events. [2023-01-28 07:48:27,986 INFO L131 PetriNetUnfolder]: For 72/81 co-relation queries the response was YES. [2023-01-28 07:48:27,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 1103 events. 197/1103 cut-off events. For 72/81 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6638 event pairs, 1 based on Foata normal form. 0/911 useless extension candidates. Maximal degree in co-relation 671. Up to 32 conditions per place. [2023-01-28 07:48:27,999 INFO L82 GeneralOperation]: Start removeDead. Operand has 292 places, 343 transitions, 734 flow [2023-01-28 07:48:28,010 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 292 places, 343 transitions, 734 flow [2023-01-28 07:48:28,010 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:48:28,010 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 292 places, 343 transitions, 734 flow [2023-01-28 07:48:28,011 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 292 places, 343 transitions, 734 flow [2023-01-28 07:48:28,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 343 transitions, 734 flow [2023-01-28 07:48:28,121 INFO L130 PetriNetUnfolder]: 197/1103 cut-off events. [2023-01-28 07:48:28,121 INFO L131 PetriNetUnfolder]: For 72/81 co-relation queries the response was YES. [2023-01-28 07:48:28,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 1103 events. 197/1103 cut-off events. For 72/81 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6638 event pairs, 1 based on Foata normal form. 0/911 useless extension candidates. Maximal degree in co-relation 671. Up to 32 conditions per place. [2023-01-28 07:48:28,162 INFO L119 LiptonReduction]: Number of co-enabled transitions 69784 [2023-01-28 07:48:31,825 INFO L134 LiptonReduction]: Checked pairs total: 136195 [2023-01-28 07:48:31,825 INFO L136 LiptonReduction]: Total number of compositions: 254 [2023-01-28 07:48:31,826 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:48:31,826 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;@13f4ad5e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:48:31,826 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-01-28 07:48:31,829 INFO L130 PetriNetUnfolder]: 7/41 cut-off events. [2023-01-28 07:48:31,829 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 07:48:31,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:48:31,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:48:31,829 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-28 07:48:31,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:48:31,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1521823553, now seen corresponding path program 1 times [2023-01-28 07:48:31,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:48:31,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055563528] [2023-01-28 07:48:31,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:48:31,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:48:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:48:31,886 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 07:48:31,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:48:31,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055563528] [2023-01-28 07:48:31,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055563528] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:48:31,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:48:31,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:48:31,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172339846] [2023-01-28 07:48:31,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:48:31,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:48:31,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:48:31,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:48:31,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:48:31,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 597 [2023-01-28 07:48:31,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 145 transitions, 338 flow. Second operand has 5 states, 5 states have (on average 227.4) internal successors, (1137), 5 states have internal predecessors, (1137), 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 07:48:31,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:48:31,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 597 [2023-01-28 07:48:31,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand