/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-2_3-container_of.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 00:50:21,335 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 00:50:21,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 00:50:21,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 00:50:21,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 00:50:21,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 00:50:21,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 00:50:21,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 00:50:21,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 00:50:21,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 00:50:21,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 00:50:21,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 00:50:21,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 00:50:21,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 00:50:21,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 00:50:21,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 00:50:21,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 00:50:21,412 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 00:50:21,428 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 00:50:21,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 00:50:21,429 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 00:50:21,429 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 00:50:21,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 00:50:21,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 00:50:21,429 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 00:50:21,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 00:50:21,430 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 00:50:21,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 00:50:21,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 00:50:21,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 00:50:21,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 00:50:21,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 00:50:21,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 00:50:21,430 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 00:50:21,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 00:50:21,430 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 00:50:21,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 00:50:21,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 00:50:21,430 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 00:50:21,431 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 00:50:21,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 00:50:21,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:50:21,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 00:50:21,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 00:50:21,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 00:50:21,431 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 00:50:21,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 00:50:21,431 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 00:50:21,431 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 00:50:21,431 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 00:50:21,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 00:50:21,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 00:50:21,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 00:50:21,621 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 00:50:21,622 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 00:50:21,623 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_3-container_of.i [2023-01-28 00:50:22,542 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 00:50:22,781 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 00:50:22,781 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_3-container_of.i [2023-01-28 00:50:22,798 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09edabba8/9a3d3c8ea6ad4484a8a0846d963c5ae3/FLAG51538374d [2023-01-28 00:50:22,810 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09edabba8/9a3d3c8ea6ad4484a8a0846d963c5ae3 [2023-01-28 00:50:22,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 00:50:22,814 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 00:50:22,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 00:50:22,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 00:50:22,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 00:50:22,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:50:22" (1/1) ... [2023-01-28 00:50:22,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@771c5875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:22, skipping insertion in model container [2023-01-28 00:50:22,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:50:22" (1/1) ... [2023-01-28 00:50:22,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 00:50:22,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 00:50:22,979 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-01-28 00:50:23,408 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_3-container_of.i[75002,75015] [2023-01-28 00:50:23,445 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:50:23,452 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 00:50:23,461 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-01-28 00:50:23,488 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_3-container_of.i[75002,75015] [2023-01-28 00:50:23,504 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:50:23,584 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:50:23,584 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:50:23,584 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:50:23,589 INFO L208 MainTranslator]: Completed translation [2023-01-28 00:50:23,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:23 WrapperNode [2023-01-28 00:50:23,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 00:50:23,590 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 00:50:23,590 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 00:50:23,590 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 00:50:23,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:23" (1/1) ... [2023-01-28 00:50:23,621 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:23" (1/1) ... [2023-01-28 00:50:23,645 INFO L138 Inliner]: procedures = 469, calls = 63, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 144 [2023-01-28 00:50:23,646 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 00:50:23,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 00:50:23,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 00:50:23,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 00:50:23,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:23" (1/1) ... [2023-01-28 00:50:23,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:23" (1/1) ... [2023-01-28 00:50:23,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:23" (1/1) ... [2023-01-28 00:50:23,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:23" (1/1) ... [2023-01-28 00:50:23,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:23" (1/1) ... [2023-01-28 00:50:23,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:23" (1/1) ... [2023-01-28 00:50:23,669 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:23" (1/1) ... [2023-01-28 00:50:23,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:23" (1/1) ... [2023-01-28 00:50:23,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 00:50:23,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 00:50:23,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 00:50:23,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 00:50:23,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:23" (1/1) ... [2023-01-28 00:50:23,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:50:23,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 00:50:23,706 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 00:50:23,715 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 00:50:23,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 00:50:23,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 00:50:23,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 00:50:23,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 00:50:23,745 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 00:50:23,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 00:50:23,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-28 00:50:23,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 00:50:23,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 00:50:23,745 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-01-28 00:50:23,745 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-01-28 00:50:23,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 00:50:23,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 00:50:23,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 00:50:23,746 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 00:50:23,980 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 00:50:23,981 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 00:50:24,200 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 00:50:24,249 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 00:50:24,250 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 00:50:24,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:50:24 BoogieIcfgContainer [2023-01-28 00:50:24,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 00:50:24,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 00:50:24,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 00:50:24,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 00:50:24,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 12:50:22" (1/3) ... [2023-01-28 00:50:24,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66805874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:50:24, skipping insertion in model container [2023-01-28 00:50:24,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:23" (2/3) ... [2023-01-28 00:50:24,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66805874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:50:24, skipping insertion in model container [2023-01-28 00:50:24,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:50:24" (3/3) ... [2023-01-28 00:50:24,262 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_3-container_of.i [2023-01-28 00:50:24,273 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 00:50:24,273 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-01-28 00:50:24,273 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 00:50:24,309 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 00:50:24,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 159 transitions, 334 flow [2023-01-28 00:50:24,388 INFO L130 PetriNetUnfolder]: 8/197 cut-off events. [2023-01-28 00:50:24,388 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 00:50:24,392 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 7. Compared 338 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 00:50:24,392 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 159 transitions, 334 flow [2023-01-28 00:50:24,417 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 147 transitions, 306 flow [2023-01-28 00:50:24,420 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 00:50:24,426 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 147 transitions, 306 flow [2023-01-28 00:50:24,427 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 147 transitions, 306 flow [2023-01-28 00:50:24,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 147 transitions, 306 flow [2023-01-28 00:50:24,450 INFO L130 PetriNetUnfolder]: 5/178 cut-off events. [2023-01-28 00:50:24,451 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 00:50:24,451 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 7. Compared 286 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 00:50:24,453 INFO L119 LiptonReduction]: Number of co-enabled transitions 2704 [2023-01-28 00:50:31,789 INFO L134 LiptonReduction]: Checked pairs total: 6343 [2023-01-28 00:50:31,790 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-01-28 00:50:31,804 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 00:50:31,812 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;@3f78865d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 00:50:31,812 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-01-28 00:50:31,819 INFO L130 PetriNetUnfolder]: 0/11 cut-off events. [2023-01-28 00:50:31,820 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:50:31,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:31,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-01-28 00:50:31,821 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 00:50:31,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:31,827 INFO L85 PathProgramCache]: Analyzing trace with hash 556061324, now seen corresponding path program 1 times [2023-01-28 00:50:31,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:31,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737572674] [2023-01-28 00:50:31,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:31,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:32,266 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 00:50:32,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:32,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737572674] [2023-01-28 00:50:32,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737572674] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:32,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:32,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:50:32,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097469578] [2023-01-28 00:50:32,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:32,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:50:32,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:32,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:50:32,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:50:32,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 301 [2023-01-28 00:50:32,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 82 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 00:50:32,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:32,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 301 [2023-01-28 00:50:32,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:32,575 INFO L130 PetriNetUnfolder]: 887/1487 cut-off events. [2023-01-28 00:50:32,575 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-01-28 00:50:32,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2999 conditions, 1487 events. 887/1487 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7100 event pairs, 642 based on Foata normal form. 37/1343 useless extension candidates. Maximal degree in co-relation 2896. Up to 1268 conditions per place. [2023-01-28 00:50:32,585 INFO L137 encePairwiseOnDemand]: 293/301 looper letters, 40 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2023-01-28 00:50:32,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 46 transitions, 196 flow [2023-01-28 00:50:32,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:50:32,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:50:32,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2023-01-28 00:50:32,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4230343300110742 [2023-01-28 00:50:32,599 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2023-01-28 00:50:32,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2023-01-28 00:50:32,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:32,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2023-01-28 00:50:32,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 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 00:50:32,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 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 00:50:32,612 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 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 00:50:32,613 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 82 flow. Second operand 3 states and 382 transitions. [2023-01-28 00:50:32,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 46 transitions, 196 flow [2023-01-28 00:50:32,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 46 transitions, 188 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 00:50:32,617 INFO L231 Difference]: Finished difference. Result has 38 places, 38 transitions, 108 flow [2023-01-28 00:50:32,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=38, PETRI_TRANSITIONS=38} [2023-01-28 00:50:32,621 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -1 predicate places. [2023-01-28 00:50:32,622 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 38 transitions, 108 flow [2023-01-28 00:50:32,622 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 00:50:32,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:32,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-01-28 00:50:32,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 00:50:32,623 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 00:50:32,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:32,624 INFO L85 PathProgramCache]: Analyzing trace with hash 17937463, now seen corresponding path program 1 times [2023-01-28 00:50:32,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:32,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126055748] [2023-01-28 00:50:32,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:32,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:32,803 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 00:50:32,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:32,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126055748] [2023-01-28 00:50:32,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126055748] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:32,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:32,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:50:32,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304949105] [2023-01-28 00:50:32,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:32,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:50:32,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:32,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:50:32,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:50:32,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 301 [2023-01-28 00:50:32,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 38 transitions, 108 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 00:50:32,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:32,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 301 [2023-01-28 00:50:32,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:32,990 INFO L130 PetriNetUnfolder]: 1003/1694 cut-off events. [2023-01-28 00:50:32,990 INFO L131 PetriNetUnfolder]: For 407/407 co-relation queries the response was YES. [2023-01-28 00:50:32,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4043 conditions, 1694 events. 1003/1694 cut-off events. For 407/407 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 8453 event pairs, 718 based on Foata normal form. 0/1519 useless extension candidates. Maximal degree in co-relation 2139. Up to 1475 conditions per place. [2023-01-28 00:50:32,998 INFO L137 encePairwiseOnDemand]: 294/301 looper letters, 43 selfloop transitions, 9 changer transitions 2/54 dead transitions. [2023-01-28 00:50:32,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 54 transitions, 271 flow [2023-01-28 00:50:32,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:50:32,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:50:32,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 380 transitions. [2023-01-28 00:50:32,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42081949058693247 [2023-01-28 00:50:32,999 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 380 transitions. [2023-01-28 00:50:32,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 380 transitions. [2023-01-28 00:50:33,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:33,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 380 transitions. [2023-01-28 00:50:33,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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 00:50:33,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 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 00:50:33,002 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 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 00:50:33,002 INFO L175 Difference]: Start difference. First operand has 38 places, 38 transitions, 108 flow. Second operand 3 states and 380 transitions. [2023-01-28 00:50:33,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 54 transitions, 271 flow [2023-01-28 00:50:33,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 54 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 00:50:33,007 INFO L231 Difference]: Finished difference. Result has 40 places, 44 transitions, 173 flow [2023-01-28 00:50:33,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=40, PETRI_TRANSITIONS=44} [2023-01-28 00:50:33,007 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2023-01-28 00:50:33,007 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 44 transitions, 173 flow [2023-01-28 00:50:33,008 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 00:50:33,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:33,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:33,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 00:50:33,008 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 00:50:33,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:33,008 INFO L85 PathProgramCache]: Analyzing trace with hash -234562962, now seen corresponding path program 1 times [2023-01-28 00:50:33,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:33,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856020818] [2023-01-28 00:50:33,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:33,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:33,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:33,096 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 00:50:33,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:33,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856020818] [2023-01-28 00:50:33,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856020818] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:33,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:33,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:50:33,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765491679] [2023-01-28 00:50:33,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:33,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:50:33,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:33,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:50:33,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:50:33,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 301 [2023-01-28 00:50:33,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 44 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 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 00:50:33,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:33,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 301 [2023-01-28 00:50:33,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:33,318 INFO L130 PetriNetUnfolder]: 1317/2197 cut-off events. [2023-01-28 00:50:33,319 INFO L131 PetriNetUnfolder]: For 1267/1267 co-relation queries the response was YES. [2023-01-28 00:50:33,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5814 conditions, 2197 events. 1317/2197 cut-off events. For 1267/1267 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 11566 event pairs, 620 based on Foata normal form. 0/2096 useless extension candidates. Maximal degree in co-relation 3185. Up to 1725 conditions per place. [2023-01-28 00:50:33,328 INFO L137 encePairwiseOnDemand]: 292/301 looper letters, 54 selfloop transitions, 8 changer transitions 0/62 dead transitions. [2023-01-28 00:50:33,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 62 transitions, 353 flow [2023-01-28 00:50:33,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:50:33,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:50:33,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-01-28 00:50:33,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318936877076412 [2023-01-28 00:50:33,329 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-01-28 00:50:33,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-01-28 00:50:33,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:33,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-01-28 00:50:33,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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 00:50:33,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 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 00:50:33,332 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 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 00:50:33,332 INFO L175 Difference]: Start difference. First operand has 40 places, 44 transitions, 173 flow. Second operand 3 states and 390 transitions. [2023-01-28 00:50:33,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 62 transitions, 353 flow [2023-01-28 00:50:33,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 62 transitions, 343 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 00:50:33,334 INFO L231 Difference]: Finished difference. Result has 43 places, 51 transitions, 244 flow [2023-01-28 00:50:33,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=43, PETRI_TRANSITIONS=51} [2023-01-28 00:50:33,335 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2023-01-28 00:50:33,335 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 51 transitions, 244 flow [2023-01-28 00:50:33,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 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 00:50:33,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:33,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:33,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 00:50:33,336 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 00:50:33,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:33,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1318483104, now seen corresponding path program 1 times [2023-01-28 00:50:33,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:33,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704531429] [2023-01-28 00:50:33,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:33,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:33,410 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 00:50:33,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:33,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704531429] [2023-01-28 00:50:33,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704531429] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:33,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:33,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:50:33,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652373071] [2023-01-28 00:50:33,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:33,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:50:33,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:33,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:50:33,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:50:33,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 301 [2023-01-28 00:50:33,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 51 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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 00:50:33,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:33,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 301 [2023-01-28 00:50:33,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:33,630 INFO L130 PetriNetUnfolder]: 1580/2622 cut-off events. [2023-01-28 00:50:33,631 INFO L131 PetriNetUnfolder]: For 3371/3371 co-relation queries the response was YES. [2023-01-28 00:50:33,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7961 conditions, 2622 events. 1580/2622 cut-off events. For 3371/3371 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 14140 event pairs, 736 based on Foata normal form. 0/2557 useless extension candidates. Maximal degree in co-relation 687. Up to 1997 conditions per place. [2023-01-28 00:50:33,644 INFO L137 encePairwiseOnDemand]: 292/301 looper letters, 58 selfloop transitions, 14 changer transitions 0/72 dead transitions. [2023-01-28 00:50:33,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 72 transitions, 499 flow [2023-01-28 00:50:33,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:50:33,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:50:33,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 389 transitions. [2023-01-28 00:50:33,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43078626799557035 [2023-01-28 00:50:33,646 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 389 transitions. [2023-01-28 00:50:33,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 389 transitions. [2023-01-28 00:50:33,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:33,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 389 transitions. [2023-01-28 00:50:33,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 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 00:50:33,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 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 00:50:33,648 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 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 00:50:33,648 INFO L175 Difference]: Start difference. First operand has 43 places, 51 transitions, 244 flow. Second operand 3 states and 389 transitions. [2023-01-28 00:50:33,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 72 transitions, 499 flow [2023-01-28 00:50:33,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 72 transitions, 441 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-01-28 00:50:33,653 INFO L231 Difference]: Finished difference. Result has 45 places, 62 transitions, 352 flow [2023-01-28 00:50:33,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=352, PETRI_PLACES=45, PETRI_TRANSITIONS=62} [2023-01-28 00:50:33,653 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2023-01-28 00:50:33,654 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 62 transitions, 352 flow [2023-01-28 00:50:33,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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 00:50:33,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:33,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:33,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 00:50:33,654 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 00:50:33,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:33,654 INFO L85 PathProgramCache]: Analyzing trace with hash 911165254, now seen corresponding path program 1 times [2023-01-28 00:50:33,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:33,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052707071] [2023-01-28 00:50:33,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:33,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 00:50:33,677 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 00:50:33,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 00:50:33,704 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 00:50:33,704 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 00:50:33,704 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2023-01-28 00:50:33,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2023-01-28 00:50:33,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2023-01-28 00:50:33,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2023-01-28 00:50:33,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2023-01-28 00:50:33,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2023-01-28 00:50:33,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-01-28 00:50:33,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-01-28 00:50:33,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 00:50:33,706 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-01-28 00:50:33,709 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 00:50:33,709 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 00:50:33,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:50:33 BasicIcfg [2023-01-28 00:50:33,727 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 00:50:33,728 INFO L158 Benchmark]: Toolchain (without parser) took 10914.55ms. Allocated memory was 356.5MB in the beginning and 576.7MB in the end (delta: 220.2MB). Free memory was 294.2MB in the beginning and 210.3MB in the end (delta: 83.9MB). Peak memory consumption was 304.9MB. Max. memory is 16.0GB. [2023-01-28 00:50:33,728 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 356.5MB. Free memory is still 304.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 00:50:33,728 INFO L158 Benchmark]: CACSL2BoogieTranslator took 774.04ms. Allocated memory is still 356.5MB. Free memory was 294.2MB in the beginning and 239.7MB in the end (delta: 54.5MB). Peak memory consumption was 54.5MB. Max. memory is 16.0GB. [2023-01-28 00:50:33,728 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.80ms. Allocated memory is still 356.5MB. Free memory was 239.7MB in the beginning and 236.3MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:50:33,728 INFO L158 Benchmark]: Boogie Preprocessor took 27.15ms. Allocated memory is still 356.5MB. Free memory was 236.3MB in the beginning and 233.4MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 00:50:33,729 INFO L158 Benchmark]: RCFGBuilder took 577.51ms. Allocated memory is still 356.5MB. Free memory was 233.4MB in the beginning and 205.4MB in the end (delta: 28.0MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-01-28 00:50:33,729 INFO L158 Benchmark]: TraceAbstraction took 9468.67ms. Allocated memory was 356.5MB in the beginning and 576.7MB in the end (delta: 220.2MB). Free memory was 204.1MB in the beginning and 210.3MB in the end (delta: -6.2MB). Peak memory consumption was 214.7MB. Max. memory is 16.0GB. [2023-01-28 00:50:33,736 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 356.5MB. Free memory is still 304.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 774.04ms. Allocated memory is still 356.5MB. Free memory was 294.2MB in the beginning and 239.7MB in the end (delta: 54.5MB). Peak memory consumption was 54.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 55.80ms. Allocated memory is still 356.5MB. Free memory was 239.7MB in the beginning and 236.3MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.15ms. Allocated memory is still 356.5MB. Free memory was 236.3MB in the beginning and 233.4MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 577.51ms. Allocated memory is still 356.5MB. Free memory was 233.4MB in the beginning and 205.4MB in the end (delta: 28.0MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * TraceAbstraction took 9468.67ms. Allocated memory was 356.5MB in the beginning and 576.7MB in the end (delta: 220.2MB). Free memory was 204.1MB in the beginning and 210.3MB in the end (delta: -6.2MB). Peak memory consumption was 214.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.4s, 149 PlacesBefore, 39 PlacesAfterwards, 147 TransitionsBefore, 35 TransitionsAfterwards, 2704 CoEnabledTransitionPairs, 6 FixpointIterations, 72 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 16 ConcurrentYvCompositions, 2 ChoiceCompositions, 142 TotalNumberOfCompositions, 6343 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2530, independent: 2290, independent conditional: 0, independent unconditional: 2290, dependent: 240, dependent conditional: 0, dependent unconditional: 240, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1396, independent: 1344, independent conditional: 0, independent unconditional: 1344, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2530, independent: 946, independent conditional: 0, independent unconditional: 946, dependent: 188, dependent conditional: 0, dependent unconditional: 188, unknown: 1396, unknown conditional: 0, unknown unconditional: 1396] , Statistics on independence cache: Total cache size (in pairs): 88, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, 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 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={5:24}, d={5:24}, data={5:0}, data={5:0}, pthread_create(&t1, ((void *)0), my_callback, (void *)d)=-2, 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) );}) [L1714] FCALL, FORK 0 pthread_create(&t2, ((void *)0), my_callback, (void *)d) VAL [__mptr={5:24}, arg={5:24}, arg={5:24}, d={5:24}, data={5:0}, data={5:0}, data={5:0}, dev={5:24}, pthread_create(&t2, ((void *)0), my_callback, (void *)d)=-1, pthread_mutex_lock (&data->lock)=0, res=0, t1={3:0}, t2={4:0}] [L1716] 0 data->shared.a = 3 VAL [__mptr={5:24}, arg={5:24}, arg={5:24}, d={5:24}, data={5:0}, data={5:0}, data={5:0}, dev={5:24}, pthread_mutex_lock (&data->lock)=0, res=0, t1={3:0}, t2={4:0}] [L1694] 1 data->shared.a = 1 VAL [__mptr={5:24}, arg={5:24}, arg={5:24}, data={5:0}, dev={5:24}, t1={3:0}, t2={4:0}] [L1719] 0 data->shared.b = 3 VAL [__mptr={5:24}, arg={5:24}, arg={5:24}, d={5:24}, data={5:0}, data={5:0}, data={5:0}, dev={5:24}, res=0, t1={3:0}, t2={4:0}] [L1722] EXPR 0 data->shared.a [L1722] CALL 0 ldv_assert(data->shared.a==3) [L1675] COND TRUE 0 !expression [L1675] 0 reach_error() VAL [\old(expression)=0, __mptr={5:24}, arg={5:24}, arg={5:24}, data={5:0}, dev={5:24}, expression=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: 9.4s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 294 IncrementalHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 18 mSDtfsCounter, 294 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=352occurred in iteration=4, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 140 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 00:50:33,752 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...