/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/ldv-races/race-2_5-container_of.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 07:04:52,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 07:04:52,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 07:04:52,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 07:04:52,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 07:04:52,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 07:04:52,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 07:04:52,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 07:04:52,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 07:04:52,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 07:04:52,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 07:04:52,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 07:04:52,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 07:04:52,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 07:04:52,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 07:04:52,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 07:04:52,536 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 07:04:52,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 07:04:52,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 07:04:52,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 07:04:52,545 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 07:04:52,562 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 07:04:52,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 07:04:52,563 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 07:04:52,563 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 07:04:52,563 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 07:04:52,564 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 07:04:52,564 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 07:04:52,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 07:04:52,564 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 07:04:52,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 07:04:52,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 07:04:52,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 07:04:52,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 07:04:52,565 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 07:04:52,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 07:04:52,565 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 07:04:52,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 07:04:52,565 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 07:04:52,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 07:04:52,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 07:04:52,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 07:04:52,565 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 07:04:52,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 07:04:52,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:04:52,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 07:04:52,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 07:04:52,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 07:04:52,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 07:04:52,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 07:04:52,567 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 07:04:52,567 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 07:04:52,567 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 07:04:52,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 07:04:52,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 07:04:52,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 07:04:52,829 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 07:04:52,830 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 07:04:52,831 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_5-container_of.i [2023-01-28 07:04:53,967 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 07:04:54,262 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 07:04:54,263 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_5-container_of.i [2023-01-28 07:04:54,288 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a4f2bdf5/9728b724c7e347e79b517b0d545e9c95/FLAGdfbf2021b [2023-01-28 07:04:54,304 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a4f2bdf5/9728b724c7e347e79b517b0d545e9c95 [2023-01-28 07:04:54,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 07:04:54,308 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 07:04:54,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 07:04:54,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 07:04:54,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 07:04:54,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:04:54" (1/1) ... [2023-01-28 07:04:54,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52266953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:54, skipping insertion in model container [2023-01-28 07:04:54,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:04:54" (1/1) ... [2023-01-28 07:04:54,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 07:04:54,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 07:04:54,500 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-01-28 07:04:54,892 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_5-container_of.i[75002,75015] [2023-01-28 07:04:54,923 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:04:54,933 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 07:04:54,948 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-01-28 07:04:55,001 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_5-container_of.i[75002,75015] [2023-01-28 07:04:55,012 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:04:55,115 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:04:55,115 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:04:55,116 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:04:55,121 INFO L208 MainTranslator]: Completed translation [2023-01-28 07:04:55,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:55 WrapperNode [2023-01-28 07:04:55,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 07:04:55,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 07:04:55,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 07:04:55,123 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 07:04:55,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:55" (1/1) ... [2023-01-28 07:04:55,168 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:55" (1/1) ... [2023-01-28 07:04:55,202 INFO L138 Inliner]: procedures = 469, calls = 63, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 144 [2023-01-28 07:04:55,203 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 07:04:55,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 07:04:55,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 07:04:55,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 07:04:55,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:55" (1/1) ... [2023-01-28 07:04:55,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:55" (1/1) ... [2023-01-28 07:04:55,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:55" (1/1) ... [2023-01-28 07:04:55,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:55" (1/1) ... [2023-01-28 07:04:55,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:55" (1/1) ... [2023-01-28 07:04:55,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:55" (1/1) ... [2023-01-28 07:04:55,259 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:55" (1/1) ... [2023-01-28 07:04:55,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:55" (1/1) ... [2023-01-28 07:04:55,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 07:04:55,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 07:04:55,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 07:04:55,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 07:04:55,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:55" (1/1) ... [2023-01-28 07:04:55,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:04:55,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:04:55,295 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 07:04:55,301 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 07:04:55,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 07:04:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 07:04:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 07:04:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 07:04:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 07:04:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 07:04:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-28 07:04:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 07:04:55,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 07:04:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-01-28 07:04:55,326 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-01-28 07:04:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 07:04:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 07:04:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 07:04:55,327 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 07:04:55,631 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 07:04:55,632 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 07:04:55,832 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 07:04:55,876 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 07:04:55,876 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 07:04:55,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:04:55 BoogieIcfgContainer [2023-01-28 07:04:55,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 07:04:55,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 07:04:55,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 07:04:55,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 07:04:55,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 07:04:54" (1/3) ... [2023-01-28 07:04:55,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23fc060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:04:55, skipping insertion in model container [2023-01-28 07:04:55,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:55" (2/3) ... [2023-01-28 07:04:55,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23fc060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:04:55, skipping insertion in model container [2023-01-28 07:04:55,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:04:55" (3/3) ... [2023-01-28 07:04:55,884 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_5-container_of.i [2023-01-28 07:04:55,898 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 07:04:55,899 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-01-28 07:04:55,899 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 07:04:55,963 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 07:04:55,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 159 transitions, 334 flow [2023-01-28 07:04:56,081 INFO L130 PetriNetUnfolder]: 8/197 cut-off events. [2023-01-28 07:04:56,081 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 07:04:56,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 197 events. 8/197 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 345 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 104. Up to 4 conditions per place. [2023-01-28 07:04:56,087 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 159 transitions, 334 flow [2023-01-28 07:04:56,092 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 147 transitions, 306 flow [2023-01-28 07:04:56,095 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:04:56,106 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 147 transitions, 306 flow [2023-01-28 07:04:56,108 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 147 transitions, 306 flow [2023-01-28 07:04:56,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 147 transitions, 306 flow [2023-01-28 07:04:56,139 INFO L130 PetriNetUnfolder]: 5/178 cut-off events. [2023-01-28 07:04:56,139 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 07:04:56,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 178 events. 5/178 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 294 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 94. Up to 4 conditions per place. [2023-01-28 07:04:56,141 INFO L119 LiptonReduction]: Number of co-enabled transitions 2548 [2023-01-28 07:05:03,755 INFO L134 LiptonReduction]: Checked pairs total: 6218 [2023-01-28 07:05:03,756 INFO L136 LiptonReduction]: Total number of compositions: 144 [2023-01-28 07:05:03,768 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:05:03,773 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;@72951d78, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:05:03,774 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-01-28 07:05:03,777 INFO L130 PetriNetUnfolder]: 0/11 cut-off events. [2023-01-28 07:05:03,778 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:05:03,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:05:03,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-01-28 07:05:03,779 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 07:05:03,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:05:03,783 INFO L85 PathProgramCache]: Analyzing trace with hash 560885401, now seen corresponding path program 1 times [2023-01-28 07:05:03,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:05:03,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657587070] [2023-01-28 07:05:03,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:05:03,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:05:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:05:04,318 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 07:05:04,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:05:04,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657587070] [2023-01-28 07:05:04,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657587070] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:05:04,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:05:04,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:05:04,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262610802] [2023-01-28 07:05:04,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:05:04,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:05:04,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:05:04,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:05:04,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:05:04,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 303 [2023-01-28 07:05:04,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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 07:05:04,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:05:04,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 303 [2023-01-28 07:05:04,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:05:04,597 INFO L130 PetriNetUnfolder]: 617/1073 cut-off events. [2023-01-28 07:05:04,598 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-01-28 07:05:04,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2171 conditions, 1073 events. 617/1073 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4919 event pairs, 372 based on Foata normal form. 37/989 useless extension candidates. Maximal degree in co-relation 1936. Up to 854 conditions per place. [2023-01-28 07:05:04,605 INFO L137 encePairwiseOnDemand]: 295/303 looper letters, 41 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2023-01-28 07:05:04,605 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 200 flow [2023-01-28 07:05:04,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:05:04,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:05:04,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2023-01-28 07:05:04,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4213421342134213 [2023-01-28 07:05:04,618 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2023-01-28 07:05:04,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2023-01-28 07:05:04,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:05:04,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2023-01-28 07:05:04,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:04,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 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 07:05:04,630 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 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 07:05:04,631 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 84 flow. Second operand 3 states and 383 transitions. [2023-01-28 07:05:04,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 200 flow [2023-01-28 07:05:04,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 47 transitions, 192 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 07:05:04,636 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 110 flow [2023-01-28 07:05:04,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2023-01-28 07:05:04,640 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2023-01-28 07:05:04,640 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 110 flow [2023-01-28 07:05:04,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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 07:05:04,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:05:04,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-01-28 07:05:04,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 07:05:04,641 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 07:05:04,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:05:04,642 INFO L85 PathProgramCache]: Analyzing trace with hash 18093115, now seen corresponding path program 1 times [2023-01-28 07:05:04,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:05:04,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627529279] [2023-01-28 07:05:04,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:05:04,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:05:04,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:05:04,836 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 07:05:04,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:05:04,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627529279] [2023-01-28 07:05:04,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627529279] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:05:04,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:05:04,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:05:04,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438201606] [2023-01-28 07:05:04,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:05:04,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:05:04,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:05:04,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:05:04,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:05:04,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 303 [2023-01-28 07:05:04,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 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 07:05:04,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:05:04,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 303 [2023-01-28 07:05:04,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:05:05,062 INFO L130 PetriNetUnfolder]: 733/1280 cut-off events. [2023-01-28 07:05:05,063 INFO L131 PetriNetUnfolder]: For 311/311 co-relation queries the response was YES. [2023-01-28 07:05:05,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3107 conditions, 1280 events. 733/1280 cut-off events. For 311/311 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 6216 event pairs, 448 based on Foata normal form. 0/1165 useless extension candidates. Maximal degree in co-relation 1203. Up to 1061 conditions per place. [2023-01-28 07:05:05,073 INFO L137 encePairwiseOnDemand]: 296/303 looper letters, 44 selfloop transitions, 9 changer transitions 2/55 dead transitions. [2023-01-28 07:05:05,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 55 transitions, 275 flow [2023-01-28 07:05:05,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:05:05,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:05:05,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 381 transitions. [2023-01-28 07:05:05,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41914191419141916 [2023-01-28 07:05:05,078 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 381 transitions. [2023-01-28 07:05:05,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 381 transitions. [2023-01-28 07:05:05,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:05:05,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 381 transitions. [2023-01-28 07:05:05,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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 07:05:05,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 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 07:05:05,085 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 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 07:05:05,085 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 110 flow. Second operand 3 states and 381 transitions. [2023-01-28 07:05:05,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 55 transitions, 275 flow [2023-01-28 07:05:05,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 55 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 07:05:05,092 INFO L231 Difference]: Finished difference. Result has 41 places, 45 transitions, 175 flow [2023-01-28 07:05:05,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=41, PETRI_TRANSITIONS=45} [2023-01-28 07:05:05,093 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-01-28 07:05:05,093 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 45 transitions, 175 flow [2023-01-28 07:05:05,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 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 07:05:05,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:05:05,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:05:05,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 07:05:05,095 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 07:05:05,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:05:05,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1431863133, now seen corresponding path program 1 times [2023-01-28 07:05:05,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:05:05,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689280076] [2023-01-28 07:05:05,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:05:05,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:05:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:05:05,210 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 07:05:05,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:05:05,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689280076] [2023-01-28 07:05:05,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689280076] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:05:05,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:05:05,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:05:05,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065555216] [2023-01-28 07:05:05,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:05:05,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:05:05,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:05:05,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:05:05,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:05:05,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 303 [2023-01-28 07:05:05,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 45 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 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 07:05:05,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:05:05,214 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 303 [2023-01-28 07:05:05,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:05:05,309 INFO L130 PetriNetUnfolder]: 154/317 cut-off events. [2023-01-28 07:05:05,309 INFO L131 PetriNetUnfolder]: For 211/225 co-relation queries the response was YES. [2023-01-28 07:05:05,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 749 conditions, 317 events. 154/317 cut-off events. For 211/225 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1190 event pairs, 100 based on Foata normal form. 51/355 useless extension candidates. Maximal degree in co-relation 744. Up to 207 conditions per place. [2023-01-28 07:05:05,311 INFO L137 encePairwiseOnDemand]: 300/303 looper letters, 30 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2023-01-28 07:05:05,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 36 transitions, 164 flow [2023-01-28 07:05:05,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:05:05,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:05:05,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2023-01-28 07:05:05,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48514851485148514 [2023-01-28 07:05:05,313 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 441 transitions. [2023-01-28 07:05:05,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 441 transitions. [2023-01-28 07:05:05,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:05:05,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 441 transitions. [2023-01-28 07:05:05,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 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 07:05:05,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 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 07:05:05,317 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 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 07:05:05,317 INFO L175 Difference]: Start difference. First operand has 41 places, 45 transitions, 175 flow. Second operand 3 states and 441 transitions. [2023-01-28 07:05:05,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 36 transitions, 164 flow [2023-01-28 07:05:05,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 36 transitions, 152 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-01-28 07:05:05,319 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 72 flow [2023-01-28 07:05:05,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2023-01-28 07:05:05,319 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -5 predicate places. [2023-01-28 07:05:05,320 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 72 flow [2023-01-28 07:05:05,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 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 07:05:05,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:05:05,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:05:05,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 07:05:05,321 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 07:05:05,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:05:05,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1519042807, now seen corresponding path program 1 times [2023-01-28 07:05:05,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:05:05,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188710282] [2023-01-28 07:05:05,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:05:05,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:05:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:05:05,509 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 07:05:05,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:05:05,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188710282] [2023-01-28 07:05:05,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188710282] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:05:05,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:05:05,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:05:05,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868744602] [2023-01-28 07:05:05,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:05:05,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:05:05,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:05:05,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:05:05,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:05:05,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 303 [2023-01-28 07:05:05,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:05,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:05:05,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 303 [2023-01-28 07:05:05,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:05:05,619 INFO L130 PetriNetUnfolder]: 214/415 cut-off events. [2023-01-28 07:05:05,619 INFO L131 PetriNetUnfolder]: For 120/120 co-relation queries the response was YES. [2023-01-28 07:05:05,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 415 events. 214/415 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1419 event pairs, 167 based on Foata normal form. 0/399 useless extension candidates. Maximal degree in co-relation 1008. Up to 357 conditions per place. [2023-01-28 07:05:05,622 INFO L137 encePairwiseOnDemand]: 296/303 looper letters, 35 selfloop transitions, 6 changer transitions 0/41 dead transitions. [2023-01-28 07:05:05,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 185 flow [2023-01-28 07:05:05,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:05:05,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:05:05,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2023-01-28 07:05:05,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42574257425742573 [2023-01-28 07:05:05,624 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 387 transitions. [2023-01-28 07:05:05,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 387 transitions. [2023-01-28 07:05:05,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:05:05,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 387 transitions. [2023-01-28 07:05:05,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:05,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 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 07:05:05,628 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 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 07:05:05,628 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 72 flow. Second operand 3 states and 387 transitions. [2023-01-28 07:05:05,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 185 flow [2023-01-28 07:05:05,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 41 transitions, 181 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 07:05:05,629 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 118 flow [2023-01-28 07:05:05,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2023-01-28 07:05:05,630 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2023-01-28 07:05:05,630 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 118 flow [2023-01-28 07:05:05,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:05,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:05:05,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:05:05,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 07:05:05,631 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 07:05:05,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:05:05,632 INFO L85 PathProgramCache]: Analyzing trace with hash -968661501, now seen corresponding path program 1 times [2023-01-28 07:05:05,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:05:05,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384369961] [2023-01-28 07:05:05,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:05:05,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:05:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:05:05,777 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 07:05:05,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:05:05,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384369961] [2023-01-28 07:05:05,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384369961] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:05:05,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:05:05,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:05:05,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005774900] [2023-01-28 07:05:05,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:05:05,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:05:05,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:05:05,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:05:05,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:05:05,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 303 [2023-01-28 07:05:05,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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 07:05:05,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:05:05,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 303 [2023-01-28 07:05:05,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:05:05,883 INFO L130 PetriNetUnfolder]: 225/445 cut-off events. [2023-01-28 07:05:05,883 INFO L131 PetriNetUnfolder]: For 191/191 co-relation queries the response was YES. [2023-01-28 07:05:05,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 445 events. 225/445 cut-off events. For 191/191 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1577 event pairs, 176 based on Foata normal form. 0/434 useless extension candidates. Maximal degree in co-relation 1125. Up to 376 conditions per place. [2023-01-28 07:05:05,886 INFO L137 encePairwiseOnDemand]: 296/303 looper letters, 37 selfloop transitions, 9 changer transitions 0/46 dead transitions. [2023-01-28 07:05:05,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 46 transitions, 263 flow [2023-01-28 07:05:05,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:05:05,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:05:05,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2023-01-28 07:05:05,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42464246424642466 [2023-01-28 07:05:05,888 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 386 transitions. [2023-01-28 07:05:05,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 386 transitions. [2023-01-28 07:05:05,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:05:05,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 386 transitions. [2023-01-28 07:05:05,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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 07:05:05,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 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 07:05:05,892 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 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 07:05:05,892 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 118 flow. Second operand 3 states and 386 transitions. [2023-01-28 07:05:05,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 46 transitions, 263 flow [2023-01-28 07:05:05,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 46 transitions, 237 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-28 07:05:05,894 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 176 flow [2023-01-28 07:05:05,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2023-01-28 07:05:05,895 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2023-01-28 07:05:05,895 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 176 flow [2023-01-28 07:05:05,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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 07:05:05,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:05:05,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:05:05,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 07:05:05,896 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 07:05:05,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:05:05,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1746930508, now seen corresponding path program 1 times [2023-01-28 07:05:05,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:05:05,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991684606] [2023-01-28 07:05:05,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:05:05,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:05:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:05:06,408 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 07:05:06,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:05:06,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991684606] [2023-01-28 07:05:06,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991684606] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:05:06,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:05:06,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 07:05:06,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524432922] [2023-01-28 07:05:06,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:05:06,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:05:06,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:05:06,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:05:06,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:05:06,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 303 [2023-01-28 07:05:06,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 131.4) internal successors, (657), 5 states have internal predecessors, (657), 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 07:05:06,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:05:06,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 303 [2023-01-28 07:05:06,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:05:06,582 INFO L130 PetriNetUnfolder]: 202/432 cut-off events. [2023-01-28 07:05:06,582 INFO L131 PetriNetUnfolder]: For 194/200 co-relation queries the response was YES. [2023-01-28 07:05:06,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1107 conditions, 432 events. 202/432 cut-off events. For 194/200 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1837 event pairs, 75 based on Foata normal form. 15/430 useless extension candidates. Maximal degree in co-relation 1100. Up to 211 conditions per place. [2023-01-28 07:05:06,585 INFO L137 encePairwiseOnDemand]: 297/303 looper letters, 45 selfloop transitions, 6 changer transitions 0/57 dead transitions. [2023-01-28 07:05:06,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 57 transitions, 327 flow [2023-01-28 07:05:06,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:05:06,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:05:06,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 684 transitions. [2023-01-28 07:05:06,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4514851485148515 [2023-01-28 07:05:06,588 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 684 transitions. [2023-01-28 07:05:06,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 684 transitions. [2023-01-28 07:05:06,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:05:06,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 684 transitions. [2023-01-28 07:05:06,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 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 07:05:06,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 303.0) internal successors, (1818), 6 states have internal predecessors, (1818), 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 07:05:06,593 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 303.0) internal successors, (1818), 6 states have internal predecessors, (1818), 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 07:05:06,593 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 176 flow. Second operand 5 states and 684 transitions. [2023-01-28 07:05:06,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 57 transitions, 327 flow [2023-01-28 07:05:06,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 57 transitions, 307 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 07:05:06,596 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 191 flow [2023-01-28 07:05:06,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=191, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2023-01-28 07:05:06,598 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2023-01-28 07:05:06,598 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 191 flow [2023-01-28 07:05:06,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 131.4) internal successors, (657), 5 states have internal predecessors, (657), 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 07:05:06,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:05:06,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:05:06,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 07:05:06,599 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 07:05:06,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:05:06,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1720295958, now seen corresponding path program 2 times [2023-01-28 07:05:06,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:05:06,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344276502] [2023-01-28 07:05:06,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:05:06,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:05:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 07:05:06,655 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 07:05:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 07:05:06,708 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 07:05:06,708 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 07:05:06,709 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2023-01-28 07:05:06,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2023-01-28 07:05:06,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2023-01-28 07:05:06,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2023-01-28 07:05:06,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2023-01-28 07:05:06,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2023-01-28 07:05:06,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-01-28 07:05:06,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-01-28 07:05:06,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 07:05:06,712 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-01-28 07:05:06,716 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 07:05:06,716 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 07:05:06,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 07:05:06 BasicIcfg [2023-01-28 07:05:06,757 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 07:05:06,757 INFO L158 Benchmark]: Toolchain (without parser) took 12449.73ms. Allocated memory was 373.3MB in the beginning and 448.8MB in the end (delta: 75.5MB). Free memory was 330.2MB in the beginning and 166.7MB in the end (delta: 163.5MB). Peak memory consumption was 239.3MB. Max. memory is 16.0GB. [2023-01-28 07:05:06,758 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 255.9MB. Free memory is still 213.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 07:05:06,758 INFO L158 Benchmark]: CACSL2BoogieTranslator took 813.14ms. Allocated memory is still 373.3MB. Free memory was 329.9MB in the beginning and 340.5MB in the end (delta: -10.6MB). Peak memory consumption was 59.5MB. Max. memory is 16.0GB. [2023-01-28 07:05:06,758 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.25ms. Allocated memory is still 373.3MB. Free memory was 340.5MB in the beginning and 337.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 07:05:06,759 INFO L158 Benchmark]: Boogie Preprocessor took 62.64ms. Allocated memory is still 373.3MB. Free memory was 337.3MB in the beginning and 334.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:05:06,759 INFO L158 Benchmark]: RCFGBuilder took 611.62ms. Allocated memory is still 373.3MB. Free memory was 334.3MB in the beginning and 306.7MB in the end (delta: 27.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-01-28 07:05:06,759 INFO L158 Benchmark]: TraceAbstraction took 10877.43ms. Allocated memory was 373.3MB in the beginning and 448.8MB in the end (delta: 75.5MB). Free memory was 305.8MB in the beginning and 166.7MB in the end (delta: 139.1MB). Peak memory consumption was 213.4MB. Max. memory is 16.0GB. [2023-01-28 07:05:06,762 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 255.9MB. Free memory is still 213.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 813.14ms. Allocated memory is still 373.3MB. Free memory was 329.9MB in the beginning and 340.5MB in the end (delta: -10.6MB). Peak memory consumption was 59.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 80.25ms. Allocated memory is still 373.3MB. Free memory was 340.5MB in the beginning and 337.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 62.64ms. Allocated memory is still 373.3MB. Free memory was 337.3MB in the beginning and 334.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 611.62ms. Allocated memory is still 373.3MB. Free memory was 334.3MB in the beginning and 306.7MB in the end (delta: 27.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * TraceAbstraction took 10877.43ms. Allocated memory was 373.3MB in the beginning and 448.8MB in the end (delta: 75.5MB). Free memory was 305.8MB in the beginning and 166.7MB in the end (delta: 139.1MB). Peak memory consumption was 213.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.6s, 149 PlacesBefore, 40 PlacesAfterwards, 147 TransitionsBefore, 36 TransitionsAfterwards, 2548 CoEnabledTransitionPairs, 7 FixpointIterations, 74 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 15 ConcurrentYvCompositions, 2 ChoiceCompositions, 144 TotalNumberOfCompositions, 6218 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2661, independent: 2367, independent conditional: 0, independent unconditional: 2367, dependent: 294, dependent conditional: 0, dependent unconditional: 294, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1334, independent: 1278, independent conditional: 0, independent unconditional: 1278, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2661, independent: 1089, independent conditional: 0, independent unconditional: 1089, dependent: 238, dependent conditional: 0, dependent unconditional: 238, unknown: 1334, unknown conditional: 0, unknown unconditional: 1334] , Statistics on independence cache: Total cache size (in pairs): 90, Positive cache size: 66, Positive conditional cache size: 0, Positive unconditional cache size: 66, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 1675]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1676] 0 pthread_t t1,t2; [L1745] CALL, EXPR 0 my_drv_init() [L1739] 0 return 0; [L1745] RET, EXPR 0 my_drv_init() [L1745] 0 int ret = my_drv_init(); [L1746] COND TRUE 0 ret==0 [L1747] 0 int probe_ret; [L1748] 0 struct my_data data; [L1749] CALL, EXPR 0 my_drv_probe(&data) [L1706] 0 struct device *d = &data->dev; [L1708] 0 data->shared.a = 0 [L1709] 0 data->shared.b = 0 [L1710] 0 int res = __VERIFIER_nondet_int(); [L1711] COND FALSE 0 !(\read(res)) [L1713] FCALL, FORK 0 pthread_create(&t1, ((void *)0), my_callback, (void *)d) VAL [arg={6:24}, d={6:24}, data={6:0}, data={6:0}, pthread_create(&t1, ((void *)0), my_callback, (void *)d)=-5, res=0, t1={3:0}, t2={4:0}] [L1689] 1 struct device *dev = (struct device*)arg; [L1690] 1 struct my_data *data; [L1691] 1 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L1691] 1 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1694] 1 data->shared.a = 1 VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, t1={3:0}, t2={4:0}] [L1697] EXPR 1 data->shared.b [L1697] 1 int lb = data->shared.b; [L1700] 1 data->shared.b = lb + 1 VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, lb=0, t1={3:0}, t2={4:0}] [L1703] 1 return 0; [L1714] FCALL, FORK 0 pthread_create(&t2, ((void *)0), my_callback, (void *)d) VAL [\result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, d={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, lb=0, pthread_create(&t2, ((void *)0), my_callback, (void *)d)=-4, res=0, t1={3:0}, t2={4:0}] [L1689] 2 struct device *dev = (struct device*)arg; [L1690] 2 struct my_data *data; [L1691] 2 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L1691] 2 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1715] 0 return 0; [L1749] RET, EXPR 0 my_drv_probe(&data) [L1749] 0 probe_ret = my_drv_probe(&data) [L1750] COND TRUE 0 probe_ret==0 [L1751] CALL 0 my_drv_disconnect(&data) [L1721] 0 void *status; [L1722] 0 \read(t1) VAL [\read(t1)=-5, \result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, lb=0, pthread_mutex_lock (&data->lock)=0, status={5:0}, t1={3:0}, t2={4:0}] [L1722] FCALL, JOIN 1 pthread_join(t1, &status) VAL [\read(t1)=-5, \result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, lb=0, pthread_join(t1, &status)={0:0}, pthread_mutex_lock (&data->lock)=0, status={5:0}, t1={3:0}, t2={4:0}] [L1724] 0 data->shared.a = 3 VAL [\result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, lb=0, pthread_mutex_lock (&data->lock)=0, status={5:0}, t1={3:0}, t2={4:0}] [L1694] 2 data->shared.a = 1 VAL [\result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, lb=0, t1={3:0}, t2={4:0}] [L1727] 0 data->shared.b = 3 VAL [\result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, lb=0, status={5:0}, t1={3:0}, t2={4:0}] [L1730] EXPR 0 data->shared.a [L1730] CALL 0 ldv_assert(data->shared.a==3) [L1675] COND TRUE 0 !expression [L1675] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, expression=0, lb=0, t1={3:0}, t2={4:0}] - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 169 locations, 8 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: 10.7s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 77 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 77 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 423 IncrementalHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 14 mSDtfsCounter, 423 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=191occurred in iteration=6, InterpolantAutomatonStates: 20, 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, 1.3s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 243 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-01-28 07:05:06,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...