/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/pthread-wmm/safe022_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 00:48:38,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 00:48:38,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 00:48:38,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 00:48:38,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 00:48:38,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 00:48:38,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 00:48:38,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 00:48:38,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 00:48:38,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 00:48:38,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 00:48:38,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 00:48:38,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 00:48:38,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 00:48:38,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 00:48:38,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 00:48:38,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 00:48:38,292 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 00:48:38,311 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 00:48:38,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 00:48:38,312 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 00:48:38,312 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 00:48:38,313 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 00:48:38,313 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 00:48:38,313 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 00:48:38,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 00:48:38,313 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 00:48:38,313 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 00:48:38,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 00:48:38,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 00:48:38,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 00:48:38,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 00:48:38,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 00:48:38,314 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 00:48:38,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 00:48:38,314 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 00:48:38,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 00:48:38,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 00:48:38,315 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 00:48:38,315 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 00:48:38,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 00:48:38,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:48:38,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 00:48:38,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 00:48:38,315 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 00:48:38,315 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 00:48:38,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 00:48:38,315 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 00:48:38,315 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 00:48:38,315 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 00:48:38,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 00:48:38,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 00:48:38,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 00:48:38,517 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 00:48:38,518 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 00:48:38,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.i [2023-01-28 00:48:39,478 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 00:48:39,635 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 00:48:39,635 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.i [2023-01-28 00:48:39,644 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e71dfdb06/97b0a85d8c91484e9df022eedae200ed/FLAG69e48c8ef [2023-01-28 00:48:39,653 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e71dfdb06/97b0a85d8c91484e9df022eedae200ed [2023-01-28 00:48:39,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 00:48:39,656 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 00:48:39,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 00:48:39,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 00:48:39,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 00:48:39,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:48:39" (1/1) ... [2023-01-28 00:48:39,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28b84fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:39, skipping insertion in model container [2023-01-28 00:48:39,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:48:39" (1/1) ... [2023-01-28 00:48:39,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 00:48:39,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 00:48:39,849 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.i[945,958] [2023-01-28 00:48:39,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:48:39,985 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 00:48:39,994 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.i[945,958] [2023-01-28 00:48:40,019 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:48:40,038 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:48:40,038 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:48:40,042 INFO L208 MainTranslator]: Completed translation [2023-01-28 00:48:40,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:40 WrapperNode [2023-01-28 00:48:40,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 00:48:40,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 00:48:40,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 00:48:40,044 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 00:48:40,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:40" (1/1) ... [2023-01-28 00:48:40,065 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:40" (1/1) ... [2023-01-28 00:48:40,077 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2023-01-28 00:48:40,077 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 00:48:40,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 00:48:40,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 00:48:40,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 00:48:40,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:40" (1/1) ... [2023-01-28 00:48:40,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:40" (1/1) ... [2023-01-28 00:48:40,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:40" (1/1) ... [2023-01-28 00:48:40,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:40" (1/1) ... [2023-01-28 00:48:40,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:40" (1/1) ... [2023-01-28 00:48:40,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:40" (1/1) ... [2023-01-28 00:48:40,100 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:40" (1/1) ... [2023-01-28 00:48:40,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:40" (1/1) ... [2023-01-28 00:48:40,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 00:48:40,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 00:48:40,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 00:48:40,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 00:48:40,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:40" (1/1) ... [2023-01-28 00:48:40,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:48:40,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 00:48:40,128 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 00:48:40,138 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 00:48:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 00:48:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 00:48:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 00:48:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 00:48:40,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 00:48:40,159 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 00:48:40,159 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 00:48:40,159 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 00:48:40,159 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 00:48:40,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 00:48:40,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 00:48:40,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 00:48:40,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 00:48:40,160 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 00:48:40,242 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 00:48:40,256 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 00:48:40,372 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 00:48:40,376 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 00:48:40,376 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 00:48:40,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:48:40 BoogieIcfgContainer [2023-01-28 00:48:40,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 00:48:40,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 00:48:40,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 00:48:40,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 00:48:40,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 12:48:39" (1/3) ... [2023-01-28 00:48:40,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@397b6c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:48:40, skipping insertion in model container [2023-01-28 00:48:40,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:40" (2/3) ... [2023-01-28 00:48:40,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@397b6c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:48:40, skipping insertion in model container [2023-01-28 00:48:40,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:48:40" (3/3) ... [2023-01-28 00:48:40,383 INFO L112 eAbstractionObserver]: Analyzing ICFG safe022_tso.i [2023-01-28 00:48:40,393 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 00:48:40,393 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 00:48:40,394 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 00:48:40,428 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 00:48:40,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 146 flow [2023-01-28 00:48:40,472 INFO L130 PetriNetUnfolder]: 2/66 cut-off events. [2023-01-28 00:48:40,473 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:48:40,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-01-28 00:48:40,476 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 68 transitions, 146 flow [2023-01-28 00:48:40,478 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 56 transitions, 118 flow [2023-01-28 00:48:40,480 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 00:48:40,503 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 56 transitions, 118 flow [2023-01-28 00:48:40,508 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 56 transitions, 118 flow [2023-01-28 00:48:40,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 56 transitions, 118 flow [2023-01-28 00:48:40,531 INFO L130 PetriNetUnfolder]: 1/56 cut-off events. [2023-01-28 00:48:40,531 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:48:40,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 56 events. 1/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-01-28 00:48:40,532 INFO L119 LiptonReduction]: Number of co-enabled transitions 540 [2023-01-28 00:48:42,018 INFO L134 LiptonReduction]: Checked pairs total: 1032 [2023-01-28 00:48:42,019 INFO L136 LiptonReduction]: Total number of compositions: 48 [2023-01-28 00:48:42,029 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 00:48:42,033 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;@491f621c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 00:48:42,033 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 00:48:42,035 INFO L130 PetriNetUnfolder]: 0/10 cut-off events. [2023-01-28 00:48:42,035 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:48:42,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:48:42,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-01-28 00:48:42,036 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 00:48:42,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:48:42,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1625176260, now seen corresponding path program 1 times [2023-01-28 00:48:42,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:48:42,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269001084] [2023-01-28 00:48:42,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:48:42,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:48:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:48:42,437 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 00:48:42,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:48:42,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269001084] [2023-01-28 00:48:42,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269001084] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:48:42,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:48:42,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 00:48:42,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645353831] [2023-01-28 00:48:42,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:48:42,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:48:42,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:48:42,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:48:42,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:48:42,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 116 [2023-01-28 00:48:42,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 12 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 00:48:42,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:48:42,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 116 [2023-01-28 00:48:42,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:48:42,506 INFO L130 PetriNetUnfolder]: 39/80 cut-off events. [2023-01-28 00:48:42,506 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:48:42,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 80 events. 39/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 217 event pairs, 12 based on Foata normal form. 3/82 useless extension candidates. Maximal degree in co-relation 161. Up to 61 conditions per place. [2023-01-28 00:48:42,508 INFO L137 encePairwiseOnDemand]: 113/116 looper letters, 12 selfloop transitions, 2 changer transitions 0/15 dead transitions. [2023-01-28 00:48:42,508 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 15 transitions, 64 flow [2023-01-28 00:48:42,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:48:42,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:48:42,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2023-01-28 00:48:42,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5431034482758621 [2023-01-28 00:48:42,517 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 189 transitions. [2023-01-28 00:48:42,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 189 transitions. [2023-01-28 00:48:42,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:48:42,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 189 transitions. [2023-01-28 00:48:42,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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 00:48:42,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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 00:48:42,524 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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 00:48:42,525 INFO L175 Difference]: Start difference. First operand has 19 places, 12 transitions, 30 flow. Second operand 3 states and 189 transitions. [2023-01-28 00:48:42,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 15 transitions, 64 flow [2023-01-28 00:48:42,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 15 transitions, 62 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 00:48:42,528 INFO L231 Difference]: Finished difference. Result has 20 places, 12 transitions, 36 flow [2023-01-28 00:48:42,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=12} [2023-01-28 00:48:42,531 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 1 predicate places. [2023-01-28 00:48:42,531 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 12 transitions, 36 flow [2023-01-28 00:48:42,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 00:48:42,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:48:42,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:48:42,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 00:48:42,533 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 00:48:42,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:48:42,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1159142612, now seen corresponding path program 1 times [2023-01-28 00:48:42,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:48:42,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141673477] [2023-01-28 00:48:42,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:48:42,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:48:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:48:42,688 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 00:48:42,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:48:42,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141673477] [2023-01-28 00:48:42,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141673477] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:48:42,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:48:42,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:48:42,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671052816] [2023-01-28 00:48:42,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:48:42,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:48:42,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:48:42,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:48:42,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:48:42,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 116 [2023-01-28 00:48:42,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 12 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 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 00:48:42,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:48:42,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 116 [2023-01-28 00:48:42,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:48:42,759 INFO L130 PetriNetUnfolder]: 56/111 cut-off events. [2023-01-28 00:48:42,759 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-01-28 00:48:42,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 111 events. 56/111 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 306 event pairs, 11 based on Foata normal form. 4/115 useless extension candidates. Maximal degree in co-relation 252. Up to 48 conditions per place. [2023-01-28 00:48:42,761 INFO L137 encePairwiseOnDemand]: 111/116 looper letters, 19 selfloop transitions, 6 changer transitions 0/25 dead transitions. [2023-01-28 00:48:42,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 25 transitions, 119 flow [2023-01-28 00:48:42,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 00:48:42,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 00:48:42,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 307 transitions. [2023-01-28 00:48:42,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5293103448275862 [2023-01-28 00:48:42,765 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 307 transitions. [2023-01-28 00:48:42,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 307 transitions. [2023-01-28 00:48:42,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:48:42,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 307 transitions. [2023-01-28 00:48:42,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 61.4) internal successors, (307), 5 states have internal predecessors, (307), 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 00:48:42,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 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 00:48:42,770 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 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 00:48:42,771 INFO L175 Difference]: Start difference. First operand has 20 places, 12 transitions, 36 flow. Second operand 5 states and 307 transitions. [2023-01-28 00:48:42,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 25 transitions, 119 flow [2023-01-28 00:48:42,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 25 transitions, 113 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 00:48:42,772 INFO L231 Difference]: Finished difference. Result has 24 places, 16 transitions, 67 flow [2023-01-28 00:48:42,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=67, PETRI_PLACES=24, PETRI_TRANSITIONS=16} [2023-01-28 00:48:42,772 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 5 predicate places. [2023-01-28 00:48:42,772 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 16 transitions, 67 flow [2023-01-28 00:48:42,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 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 00:48:42,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:48:42,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:48:42,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 00:48:42,773 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 00:48:42,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:48:42,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1573681166, now seen corresponding path program 1 times [2023-01-28 00:48:42,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:48:42,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308628868] [2023-01-28 00:48:42,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:48:42,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:48:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:48:42,904 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 00:48:42,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:48:42,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308628868] [2023-01-28 00:48:42,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308628868] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:48:42,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:48:42,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:48:42,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231036324] [2023-01-28 00:48:42,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:48:42,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:48:42,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:48:42,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:48:42,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:48:42,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 116 [2023-01-28 00:48:42,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 16 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 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 00:48:42,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:48:42,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 116 [2023-01-28 00:48:42,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:48:42,944 INFO L130 PetriNetUnfolder]: 39/94 cut-off events. [2023-01-28 00:48:42,944 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2023-01-28 00:48:42,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 94 events. 39/94 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 305 event pairs, 15 based on Foata normal form. 7/99 useless extension candidates. Maximal degree in co-relation 246. Up to 32 conditions per place. [2023-01-28 00:48:42,945 INFO L137 encePairwiseOnDemand]: 112/116 looper letters, 13 selfloop transitions, 3 changer transitions 6/23 dead transitions. [2023-01-28 00:48:42,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 23 transitions, 123 flow [2023-01-28 00:48:42,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:48:42,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:48:42,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 253 transitions. [2023-01-28 00:48:42,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5452586206896551 [2023-01-28 00:48:42,946 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 253 transitions. [2023-01-28 00:48:42,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 253 transitions. [2023-01-28 00:48:42,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:48:42,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 253 transitions. [2023-01-28 00:48:42,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 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 00:48:42,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 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 00:48:42,948 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 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 00:48:42,949 INFO L175 Difference]: Start difference. First operand has 24 places, 16 transitions, 67 flow. Second operand 4 states and 253 transitions. [2023-01-28 00:48:42,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 23 transitions, 123 flow [2023-01-28 00:48:42,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 23 transitions, 123 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 00:48:42,950 INFO L231 Difference]: Finished difference. Result has 29 places, 12 transitions, 62 flow [2023-01-28 00:48:42,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=62, PETRI_PLACES=29, PETRI_TRANSITIONS=12} [2023-01-28 00:48:42,951 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 10 predicate places. [2023-01-28 00:48:42,952 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 12 transitions, 62 flow [2023-01-28 00:48:42,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 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 00:48:42,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:48:42,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:48:42,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 00:48:42,953 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 00:48:42,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:48:42,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1374749480, now seen corresponding path program 1 times [2023-01-28 00:48:42,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:48:42,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590408862] [2023-01-28 00:48:42,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:48:42,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:48:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:48:43,156 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 00:48:43,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:48:43,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590408862] [2023-01-28 00:48:43,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590408862] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:48:43,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:48:43,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:48:43,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083055578] [2023-01-28 00:48:43,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:48:43,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:48:43,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:48:43,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:48:43,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:48:43,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 116 [2023-01-28 00:48:43,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 12 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 00:48:43,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:48:43,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 116 [2023-01-28 00:48:43,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:48:43,199 INFO L130 PetriNetUnfolder]: 15/46 cut-off events. [2023-01-28 00:48:43,200 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2023-01-28 00:48:43,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 46 events. 15/46 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 110 event pairs, 4 based on Foata normal form. 4/49 useless extension candidates. Maximal degree in co-relation 137. Up to 16 conditions per place. [2023-01-28 00:48:43,202 INFO L137 encePairwiseOnDemand]: 111/116 looper letters, 14 selfloop transitions, 4 changer transitions 1/21 dead transitions. [2023-01-28 00:48:43,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 21 transitions, 134 flow [2023-01-28 00:48:43,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:48:43,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:48:43,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 249 transitions. [2023-01-28 00:48:43,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366379310344828 [2023-01-28 00:48:43,203 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 249 transitions. [2023-01-28 00:48:43,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 249 transitions. [2023-01-28 00:48:43,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:48:43,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 249 transitions. [2023-01-28 00:48:43,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 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 00:48:43,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 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 00:48:43,209 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 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 00:48:43,209 INFO L175 Difference]: Start difference. First operand has 29 places, 12 transitions, 62 flow. Second operand 4 states and 249 transitions. [2023-01-28 00:48:43,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 21 transitions, 134 flow [2023-01-28 00:48:43,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 21 transitions, 96 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-01-28 00:48:43,211 INFO L231 Difference]: Finished difference. Result has 24 places, 14 transitions, 60 flow [2023-01-28 00:48:43,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=60, PETRI_PLACES=24, PETRI_TRANSITIONS=14} [2023-01-28 00:48:43,213 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 5 predicate places. [2023-01-28 00:48:43,213 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 14 transitions, 60 flow [2023-01-28 00:48:43,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 00:48:43,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:48:43,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:48:43,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 00:48:43,213 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 00:48:43,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:48:43,214 INFO L85 PathProgramCache]: Analyzing trace with hash 296235904, now seen corresponding path program 1 times [2023-01-28 00:48:43,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:48:43,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19570765] [2023-01-28 00:48:43,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:48:43,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:48:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:48:43,330 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 00:48:43,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:48:43,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19570765] [2023-01-28 00:48:43,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19570765] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:48:43,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:48:43,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:48:43,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267358071] [2023-01-28 00:48:43,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:48:43,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:48:43,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:48:43,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:48:43,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:48:43,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 116 [2023-01-28 00:48:43,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 14 transitions, 60 flow. Second operand has 5 states, 5 states have (on average 58.8) internal successors, (294), 5 states have internal predecessors, (294), 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 00:48:43,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:48:43,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 116 [2023-01-28 00:48:43,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:48:43,370 INFO L130 PetriNetUnfolder]: 8/30 cut-off events. [2023-01-28 00:48:43,370 INFO L131 PetriNetUnfolder]: For 27/29 co-relation queries the response was YES. [2023-01-28 00:48:43,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 30 events. 8/30 cut-off events. For 27/29 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 2 based on Foata normal form. 5/34 useless extension candidates. Maximal degree in co-relation 89. Up to 12 conditions per place. [2023-01-28 00:48:43,371 INFO L137 encePairwiseOnDemand]: 111/116 looper letters, 9 selfloop transitions, 6 changer transitions 1/18 dead transitions. [2023-01-28 00:48:43,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 18 transitions, 107 flow [2023-01-28 00:48:43,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 00:48:43,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 00:48:43,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 303 transitions. [2023-01-28 00:48:43,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224137931034483 [2023-01-28 00:48:43,372 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 303 transitions. [2023-01-28 00:48:43,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 303 transitions. [2023-01-28 00:48:43,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:48:43,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 303 transitions. [2023-01-28 00:48:43,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 60.6) internal successors, (303), 5 states have internal predecessors, (303), 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 00:48:43,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 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 00:48:43,374 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 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 00:48:43,374 INFO L175 Difference]: Start difference. First operand has 24 places, 14 transitions, 60 flow. Second operand 5 states and 303 transitions. [2023-01-28 00:48:43,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 18 transitions, 107 flow [2023-01-28 00:48:43,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 18 transitions, 98 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 00:48:43,375 INFO L231 Difference]: Finished difference. Result has 28 places, 14 transitions, 76 flow [2023-01-28 00:48:43,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=76, PETRI_PLACES=28, PETRI_TRANSITIONS=14} [2023-01-28 00:48:43,377 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 9 predicate places. [2023-01-28 00:48:43,377 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 14 transitions, 76 flow [2023-01-28 00:48:43,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.8) internal successors, (294), 5 states have internal predecessors, (294), 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 00:48:43,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:48:43,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:48:43,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 00:48:43,377 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 00:48:43,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:48:43,378 INFO L85 PathProgramCache]: Analyzing trace with hash -640327969, now seen corresponding path program 1 times [2023-01-28 00:48:43,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:48:43,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940093586] [2023-01-28 00:48:43,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:48:43,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:48:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:48:43,476 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 00:48:43,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:48:43,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940093586] [2023-01-28 00:48:43,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940093586] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:48:43,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:48:43,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:48:43,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818646561] [2023-01-28 00:48:43,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:48:43,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:48:43,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:48:43,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:48:43,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:48:43,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 116 [2023-01-28 00:48:43,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 14 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:48:43,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:48:43,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 116 [2023-01-28 00:48:43,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:48:43,501 INFO L130 PetriNetUnfolder]: 7/27 cut-off events. [2023-01-28 00:48:43,502 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2023-01-28 00:48:43,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 27 events. 7/27 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 1 based on Foata normal form. 1/28 useless extension candidates. Maximal degree in co-relation 84. Up to 13 conditions per place. [2023-01-28 00:48:43,502 INFO L137 encePairwiseOnDemand]: 113/116 looper letters, 0 selfloop transitions, 0 changer transitions 16/16 dead transitions. [2023-01-28 00:48:43,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 16 transitions, 110 flow [2023-01-28 00:48:43,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:48:43,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:48:43,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 246 transitions. [2023-01-28 00:48:43,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5301724137931034 [2023-01-28 00:48:43,503 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 246 transitions. [2023-01-28 00:48:43,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 246 transitions. [2023-01-28 00:48:43,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:48:43,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 246 transitions. [2023-01-28 00:48:43,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 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 00:48:43,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 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 00:48:43,505 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 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 00:48:43,505 INFO L175 Difference]: Start difference. First operand has 28 places, 14 transitions, 76 flow. Second operand 4 states and 246 transitions. [2023-01-28 00:48:43,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 16 transitions, 110 flow [2023-01-28 00:48:43,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 16 transitions, 79 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-01-28 00:48:43,506 INFO L231 Difference]: Finished difference. Result has 22 places, 0 transitions, 0 flow [2023-01-28 00:48:43,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=22, PETRI_TRANSITIONS=0} [2023-01-28 00:48:43,508 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2023-01-28 00:48:43,508 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 0 transitions, 0 flow [2023-01-28 00:48:43,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:48:43,510 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 00:48:43,510 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 00:48:43,510 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 00:48:43,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 00:48:43,511 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-01-28 00:48:43,512 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 00:48:43,512 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 00:48:43,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:48:43 BasicIcfg [2023-01-28 00:48:43,515 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 00:48:43,515 INFO L158 Benchmark]: Toolchain (without parser) took 3859.08ms. Allocated memory is still 583.0MB. Free memory was 533.4MB in the beginning and 368.1MB in the end (delta: 165.4MB). Peak memory consumption was 168.5MB. Max. memory is 16.0GB. [2023-01-28 00:48:43,515 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 364.9MB. Free memory is still 313.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 00:48:43,519 INFO L158 Benchmark]: CACSL2BoogieTranslator took 386.26ms. Allocated memory is still 583.0MB. Free memory was 533.4MB in the beginning and 513.5MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-28 00:48:43,520 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.75ms. Allocated memory is still 583.0MB. Free memory was 513.5MB in the beginning and 511.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:48:43,520 INFO L158 Benchmark]: Boogie Preprocessor took 24.12ms. Allocated memory is still 583.0MB. Free memory was 511.5MB in the beginning and 510.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:48:43,520 INFO L158 Benchmark]: RCFGBuilder took 275.58ms. Allocated memory is still 583.0MB. Free memory was 510.0MB in the beginning and 497.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 00:48:43,520 INFO L158 Benchmark]: TraceAbstraction took 3135.50ms. Allocated memory is still 583.0MB. Free memory was 496.8MB in the beginning and 368.1MB in the end (delta: 128.7MB). Peak memory consumption was 130.8MB. Max. memory is 16.0GB. [2023-01-28 00:48:43,521 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 364.9MB. Free memory is still 313.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 386.26ms. Allocated memory is still 583.0MB. Free memory was 533.4MB in the beginning and 513.5MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 33.75ms. Allocated memory is still 583.0MB. Free memory was 513.5MB in the beginning and 511.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 24.12ms. Allocated memory is still 583.0MB. Free memory was 511.5MB in the beginning and 510.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 275.58ms. Allocated memory is still 583.0MB. Free memory was 510.0MB in the beginning and 497.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 3135.50ms. Allocated memory is still 583.0MB. Free memory was 496.8MB in the beginning and 368.1MB in the end (delta: 128.7MB). Peak memory consumption was 130.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 62 PlacesBefore, 19 PlacesAfterwards, 56 TransitionsBefore, 12 TransitionsAfterwards, 540 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 48 TotalNumberOfCompositions, 1032 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 623, independent: 558, independent conditional: 0, independent unconditional: 558, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 298, independent: 283, independent conditional: 0, independent unconditional: 283, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 623, independent: 275, independent conditional: 0, independent unconditional: 275, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 298, unknown conditional: 0, unknown unconditional: 298] , Statistics on independence cache: Total cache size (in pairs): 22, Positive cache size: 16, Positive conditional cache size: 0, Positive unconditional cache size: 16, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 83 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 64 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 64 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 136 IncrementalHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 4 mSDtfsCounter, 136 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=5, InterpolantAutomatonStates: 25, 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, 0.9s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 246 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 00:48:43,539 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...