/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/safe023_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 00:48:44,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 00:48:44,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 00:48:44,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 00:48:44,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 00:48:44,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 00:48:44,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 00:48:44,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 00:48:44,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 00:48:44,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 00:48:44,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 00:48:44,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 00:48:44,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 00:48:44,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 00:48:44,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 00:48:44,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 00:48:44,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 00:48:44,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 00:48:44,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 00:48:44,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 00:48:44,714 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 00:48:44,735 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 00:48:44,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 00:48:44,736 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 00:48:44,736 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 00:48:44,737 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 00:48:44,737 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 00:48:44,737 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 00:48:44,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 00:48:44,737 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 00:48:44,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 00:48:44,738 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 00:48:44,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 00:48:44,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 00:48:44,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 00:48:44,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 00:48:44,738 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 00:48:44,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 00:48:44,738 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 00:48:44,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 00:48:44,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 00:48:44,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 00:48:44,739 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 00:48:44,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 00:48:44,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:48:44,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 00:48:44,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 00:48:44,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 00:48:44,739 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 00:48:44,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 00:48:44,740 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 00:48:44,740 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 00:48:44,740 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 00:48:44,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 00:48:44,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 00:48:44,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 00:48:44,911 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 00:48:44,911 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 00:48:44,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.i [2023-01-28 00:48:45,946 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 00:48:46,118 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 00:48:46,118 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.i [2023-01-28 00:48:46,137 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/514ae4be0/95aab202eab9415c8798f0af5b039e21/FLAG20a953a29 [2023-01-28 00:48:46,147 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/514ae4be0/95aab202eab9415c8798f0af5b039e21 [2023-01-28 00:48:46,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 00:48:46,149 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 00:48:46,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 00:48:46,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 00:48:46,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 00:48:46,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:48:46" (1/1) ... [2023-01-28 00:48:46,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@574e9e0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:46, skipping insertion in model container [2023-01-28 00:48:46,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:48:46" (1/1) ... [2023-01-28 00:48:46,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 00:48:46,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 00:48:46,313 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/safe023_tso.i[945,958] [2023-01-28 00:48:46,441 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:48:46,448 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 00:48:46,459 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/safe023_tso.i[945,958] [2023-01-28 00:48:46,487 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:48:46,509 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:48:46,509 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:48:46,514 INFO L208 MainTranslator]: Completed translation [2023-01-28 00:48:46,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:46 WrapperNode [2023-01-28 00:48:46,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 00:48:46,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 00:48:46,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 00:48:46,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 00:48:46,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:46" (1/1) ... [2023-01-28 00:48:46,541 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:46" (1/1) ... [2023-01-28 00:48:46,558 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-01-28 00:48:46,558 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 00:48:46,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 00:48:46,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 00:48:46,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 00:48:46,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:46" (1/1) ... [2023-01-28 00:48:46,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:46" (1/1) ... [2023-01-28 00:48:46,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:46" (1/1) ... [2023-01-28 00:48:46,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:46" (1/1) ... [2023-01-28 00:48:46,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:46" (1/1) ... [2023-01-28 00:48:46,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:46" (1/1) ... [2023-01-28 00:48:46,589 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:46" (1/1) ... [2023-01-28 00:48:46,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:46" (1/1) ... [2023-01-28 00:48:46,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 00:48:46,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 00:48:46,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 00:48:46,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 00:48:46,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:46" (1/1) ... [2023-01-28 00:48:46,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:48:46,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 00:48:46,634 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 00:48:46,651 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 00:48:46,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 00:48:46,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 00:48:46,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 00:48:46,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 00:48:46,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 00:48:46,661 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 00:48:46,661 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 00:48:46,662 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 00:48:46,662 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 00:48:46,662 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-28 00:48:46,662 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-28 00:48:46,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 00:48:46,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 00:48:46,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 00:48:46,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 00:48:46,664 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 00:48:46,777 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 00:48:46,789 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 00:48:46,969 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 00:48:46,973 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 00:48:46,973 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 00:48:46,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:48:46 BoogieIcfgContainer [2023-01-28 00:48:46,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 00:48:46,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 00:48:46,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 00:48:46,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 00:48:46,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 12:48:46" (1/3) ... [2023-01-28 00:48:46,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@338b3a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:48:46, skipping insertion in model container [2023-01-28 00:48:46,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:48:46" (2/3) ... [2023-01-28 00:48:46,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@338b3a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:48:46, skipping insertion in model container [2023-01-28 00:48:46,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:48:46" (3/3) ... [2023-01-28 00:48:46,980 INFO L112 eAbstractionObserver]: Analyzing ICFG safe023_tso.i [2023-01-28 00:48:46,991 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 00:48:46,991 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 00:48:46,992 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 00:48:47,026 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 00:48:47,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2023-01-28 00:48:47,078 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2023-01-28 00:48:47,078 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:48:47,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-01-28 00:48:47,081 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2023-01-28 00:48:47,084 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2023-01-28 00:48:47,086 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 00:48:47,092 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 70 transitions, 149 flow [2023-01-28 00:48:47,094 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 70 transitions, 149 flow [2023-01-28 00:48:47,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 70 transitions, 149 flow [2023-01-28 00:48:47,109 INFO L130 PetriNetUnfolder]: 1/70 cut-off events. [2023-01-28 00:48:47,109 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:48:47,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 1/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-01-28 00:48:47,111 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-01-28 00:48:48,534 INFO L134 LiptonReduction]: Checked pairs total: 2098 [2023-01-28 00:48:48,534 INFO L136 LiptonReduction]: Total number of compositions: 58 [2023-01-28 00:48:48,554 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 00:48:48,559 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;@238a2b2d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 00:48:48,559 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 00:48:48,562 INFO L130 PetriNetUnfolder]: 0/14 cut-off events. [2023-01-28 00:48:48,562 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:48:48,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:48:48,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:48:48,563 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 00:48:48,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:48:48,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1331089238, now seen corresponding path program 1 times [2023-01-28 00:48:48,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:48:48,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286595901] [2023-01-28 00:48:48,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:48:48,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:48:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:48:49,034 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 00:48:49,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:48:49,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286595901] [2023-01-28 00:48:49,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286595901] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:48:49,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:48:49,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 00:48:49,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884800543] [2023-01-28 00:48:49,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:48:49,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:48:49,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:48:49,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:48:49,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:48:49,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 143 [2023-01-28 00:48:49,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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 00:48:49,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:48:49,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 143 [2023-01-28 00:48:49,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:48:49,187 INFO L130 PetriNetUnfolder]: 424/734 cut-off events. [2023-01-28 00:48:49,187 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-01-28 00:48:49,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1487 conditions, 734 events. 424/734 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3618 event pairs, 160 based on Foata normal form. 43/777 useless extension candidates. Maximal degree in co-relation 1476. Up to 392 conditions per place. [2023-01-28 00:48:49,195 INFO L137 encePairwiseOnDemand]: 135/143 looper letters, 21 selfloop transitions, 6 changer transitions 0/28 dead transitions. [2023-01-28 00:48:49,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 28 transitions, 122 flow [2023-01-28 00:48:49,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:48:49,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:48:49,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2023-01-28 00:48:49,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5524475524475524 [2023-01-28 00:48:49,210 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2023-01-28 00:48:49,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2023-01-28 00:48:49,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:48:49,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2023-01-28 00:48:49,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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 00:48:49,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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 00:48:49,220 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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 00:48:49,221 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 237 transitions. [2023-01-28 00:48:49,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 28 transitions, 122 flow [2023-01-28 00:48:49,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 28 transitions, 118 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 00:48:49,224 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2023-01-28 00:48:49,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-01-28 00:48:49,234 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-01-28 00:48:49,234 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2023-01-28 00:48:49,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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 00:48:49,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:48:49,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:48:49,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 00:48:49,236 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 00:48:49,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:48:49,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1685907047, now seen corresponding path program 1 times [2023-01-28 00:48:49,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:48:49,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101925658] [2023-01-28 00:48:49,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:48:49,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:48:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:48:49,418 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 00:48:49,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:48:49,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101925658] [2023-01-28 00:48:49,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101925658] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:48:49,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:48:49,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:48:49,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582250341] [2023-01-28 00:48:49,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:48:49,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:48:49,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:48:49,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:48:49,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:48:49,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 143 [2023-01-28 00:48:49,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 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 00:48:49,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:48:49,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 143 [2023-01-28 00:48:49,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:48:49,511 INFO L130 PetriNetUnfolder]: 349/606 cut-off events. [2023-01-28 00:48:49,511 INFO L131 PetriNetUnfolder]: For 265/265 co-relation queries the response was YES. [2023-01-28 00:48:49,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1628 conditions, 606 events. 349/606 cut-off events. For 265/265 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2869 event pairs, 114 based on Foata normal form. 18/620 useless extension candidates. Maximal degree in co-relation 1616. Up to 209 conditions per place. [2023-01-28 00:48:49,514 INFO L137 encePairwiseOnDemand]: 137/143 looper letters, 32 selfloop transitions, 6 changer transitions 2/41 dead transitions. [2023-01-28 00:48:49,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 41 transitions, 228 flow [2023-01-28 00:48:49,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:48:49,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:48:49,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 312 transitions. [2023-01-28 00:48:49,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2023-01-28 00:48:49,518 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 312 transitions. [2023-01-28 00:48:49,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 312 transitions. [2023-01-28 00:48:49,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:48:49,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 312 transitions. [2023-01-28 00:48:49,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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 00:48:49,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 00:48:49,522 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 00:48:49,523 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 4 states and 312 transitions. [2023-01-28 00:48:49,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 41 transitions, 228 flow [2023-01-28 00:48:49,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 41 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 00:48:49,526 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 118 flow [2023-01-28 00:48:49,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=118, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2023-01-28 00:48:49,527 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-01-28 00:48:49,527 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 118 flow [2023-01-28 00:48:49,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 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 00:48:49,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:48:49,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:48:49,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 00:48:49,528 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 00:48:49,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:48:49,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1271782783, now seen corresponding path program 1 times [2023-01-28 00:48:49,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:48:49,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015212] [2023-01-28 00:48:49,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:48:49,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:48:49,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:48:49,661 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 00:48:49,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:48:49,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015212] [2023-01-28 00:48:49,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015212] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:48:49,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:48:49,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:48:49,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767172446] [2023-01-28 00:48:49,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:48:49,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:48:49,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:48:49,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:48:49,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:48:49,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 143 [2023-01-28 00:48:49,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 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 00:48:49,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:48:49,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 143 [2023-01-28 00:48:49,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:48:49,725 INFO L130 PetriNetUnfolder]: 341/594 cut-off events. [2023-01-28 00:48:49,725 INFO L131 PetriNetUnfolder]: For 499/499 co-relation queries the response was YES. [2023-01-28 00:48:49,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1731 conditions, 594 events. 341/594 cut-off events. For 499/499 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2722 event pairs, 85 based on Foata normal form. 4/596 useless extension candidates. Maximal degree in co-relation 1716. Up to 219 conditions per place. [2023-01-28 00:48:49,730 INFO L137 encePairwiseOnDemand]: 136/143 looper letters, 27 selfloop transitions, 9 changer transitions 1/38 dead transitions. [2023-01-28 00:48:49,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 244 flow [2023-01-28 00:48:49,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:48:49,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:48:49,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 307 transitions. [2023-01-28 00:48:49,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5367132867132867 [2023-01-28 00:48:49,731 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 307 transitions. [2023-01-28 00:48:49,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 307 transitions. [2023-01-28 00:48:49,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:48:49,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 307 transitions. [2023-01-28 00:48:49,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.75) internal successors, (307), 4 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 00:48:49,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 00:48:49,733 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 00:48:49,733 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 118 flow. Second operand 4 states and 307 transitions. [2023-01-28 00:48:49,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 244 flow [2023-01-28 00:48:49,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 239 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 00:48:49,737 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 180 flow [2023-01-28 00:48:49,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2023-01-28 00:48:49,738 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-01-28 00:48:49,740 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 180 flow [2023-01-28 00:48:49,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 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 00:48:49,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:48:49,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:48:49,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 00:48:49,741 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 00:48:49,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:48:49,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1652113145, now seen corresponding path program 1 times [2023-01-28 00:48:49,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:48:49,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326228200] [2023-01-28 00:48:49,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:48:49,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:48:49,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:48:49,860 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 00:48:49,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:48:49,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326228200] [2023-01-28 00:48:49,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326228200] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:48:49,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:48:49,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:48:49,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923098220] [2023-01-28 00:48:49,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:48:49,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:48:49,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:48:49,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:48:49,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:48:49,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 143 [2023-01-28 00:48:49,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 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 00:48:49,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:48:49,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 143 [2023-01-28 00:48:49,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:48:49,979 INFO L130 PetriNetUnfolder]: 487/794 cut-off events. [2023-01-28 00:48:49,980 INFO L131 PetriNetUnfolder]: For 1437/1437 co-relation queries the response was YES. [2023-01-28 00:48:49,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2669 conditions, 794 events. 487/794 cut-off events. For 1437/1437 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3336 event pairs, 86 based on Foata normal form. 8/802 useless extension candidates. Maximal degree in co-relation 2650. Up to 296 conditions per place. [2023-01-28 00:48:49,983 INFO L137 encePairwiseOnDemand]: 135/143 looper letters, 38 selfloop transitions, 14 changer transitions 14/66 dead transitions. [2023-01-28 00:48:49,983 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 66 transitions, 543 flow [2023-01-28 00:48:49,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 00:48:49,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 00:48:49,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 384 transitions. [2023-01-28 00:48:49,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5370629370629371 [2023-01-28 00:48:49,986 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 384 transitions. [2023-01-28 00:48:49,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 384 transitions. [2023-01-28 00:48:49,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:48:49,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 384 transitions. [2023-01-28 00:48:49,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.8) internal successors, (384), 5 states have internal predecessors, (384), 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 00:48:49,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 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 00:48:49,994 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 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 00:48:49,994 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 180 flow. Second operand 5 states and 384 transitions. [2023-01-28 00:48:49,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 66 transitions, 543 flow [2023-01-28 00:48:49,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 66 transitions, 536 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 00:48:49,999 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 308 flow [2023-01-28 00:48:50,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=308, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-01-28 00:48:50,001 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-01-28 00:48:50,001 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 308 flow [2023-01-28 00:48:50,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 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 00:48:50,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:48:50,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:48:50,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 00:48:50,002 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 00:48:50,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:48:50,003 INFO L85 PathProgramCache]: Analyzing trace with hash 324099592, now seen corresponding path program 1 times [2023-01-28 00:48:50,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:48:50,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655402918] [2023-01-28 00:48:50,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:48:50,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:48:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:48:50,121 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 00:48:50,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:48:50,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655402918] [2023-01-28 00:48:50,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655402918] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:48:50,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:48:50,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:48:50,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290770860] [2023-01-28 00:48:50,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:48:50,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:48:50,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:48:50,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:48:50,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:48:50,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 143 [2023-01-28 00:48:50,123 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 69.4) internal successors, (347), 5 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 00:48:50,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:48:50,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 143 [2023-01-28 00:48:50,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:48:50,197 INFO L130 PetriNetUnfolder]: 396/693 cut-off events. [2023-01-28 00:48:50,197 INFO L131 PetriNetUnfolder]: For 2143/2143 co-relation queries the response was YES. [2023-01-28 00:48:50,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2608 conditions, 693 events. 396/693 cut-off events. For 2143/2143 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3116 event pairs, 116 based on Foata normal form. 18/711 useless extension candidates. Maximal degree in co-relation 2584. Up to 332 conditions per place. [2023-01-28 00:48:50,200 INFO L137 encePairwiseOnDemand]: 138/143 looper letters, 28 selfloop transitions, 6 changer transitions 17/51 dead transitions. [2023-01-28 00:48:50,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 51 transitions, 492 flow [2023-01-28 00:48:50,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 00:48:50,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 00:48:50,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 371 transitions. [2023-01-28 00:48:50,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5188811188811189 [2023-01-28 00:48:50,201 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 371 transitions. [2023-01-28 00:48:50,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 371 transitions. [2023-01-28 00:48:50,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:48:50,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 371 transitions. [2023-01-28 00:48:50,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 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 00:48:50,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 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 00:48:50,204 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 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 00:48:50,204 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 308 flow. Second operand 5 states and 371 transitions. [2023-01-28 00:48:50,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 51 transitions, 492 flow [2023-01-28 00:48:50,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 51 transitions, 492 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 00:48:50,210 INFO L231 Difference]: Finished difference. Result has 50 places, 24 transitions, 208 flow [2023-01-28 00:48:50,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=50, PETRI_TRANSITIONS=24} [2023-01-28 00:48:50,211 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2023-01-28 00:48:50,212 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 24 transitions, 208 flow [2023-01-28 00:48:50,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.4) internal successors, (347), 5 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 00:48:50,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:48:50,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:48:50,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 00:48:50,212 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 00:48:50,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:48:50,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1438105554, now seen corresponding path program 1 times [2023-01-28 00:48:50,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:48:50,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233473788] [2023-01-28 00:48:50,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:48:50,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:48:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:48:50,317 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 00:48:50,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:48:50,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233473788] [2023-01-28 00:48:50,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233473788] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:48:50,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:48:50,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:48:50,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732906690] [2023-01-28 00:48:50,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:48:50,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:48:50,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:48:50,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:48:50,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:48:50,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 143 [2023-01-28 00:48:50,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 24 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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 00:48:50,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:48:50,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 143 [2023-01-28 00:48:50,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:48:50,351 INFO L130 PetriNetUnfolder]: 96/203 cut-off events. [2023-01-28 00:48:50,351 INFO L131 PetriNetUnfolder]: For 798/813 co-relation queries the response was YES. [2023-01-28 00:48:50,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 816 conditions, 203 events. 96/203 cut-off events. For 798/813 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 789 event pairs, 24 based on Foata normal form. 11/206 useless extension candidates. Maximal degree in co-relation 788. Up to 143 conditions per place. [2023-01-28 00:48:50,352 INFO L137 encePairwiseOnDemand]: 138/143 looper letters, 25 selfloop transitions, 3 changer transitions 1/35 dead transitions. [2023-01-28 00:48:50,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 35 transitions, 338 flow [2023-01-28 00:48:50,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:48:50,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:48:50,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2023-01-28 00:48:50,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2023-01-28 00:48:50,354 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2023-01-28 00:48:50,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2023-01-28 00:48:50,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:48:50,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2023-01-28 00:48:50,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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 00:48:50,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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 00:48:50,355 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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 00:48:50,355 INFO L175 Difference]: Start difference. First operand has 50 places, 24 transitions, 208 flow. Second operand 3 states and 247 transitions. [2023-01-28 00:48:50,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 35 transitions, 338 flow [2023-01-28 00:48:50,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 35 transitions, 257 flow, removed 11 selfloop flow, removed 11 redundant places. [2023-01-28 00:48:50,358 INFO L231 Difference]: Finished difference. Result has 42 places, 26 transitions, 166 flow [2023-01-28 00:48:50,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=42, PETRI_TRANSITIONS=26} [2023-01-28 00:48:50,359 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-01-28 00:48:50,359 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 26 transitions, 166 flow [2023-01-28 00:48:50,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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 00:48:50,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:48:50,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:48:50,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 00:48:50,360 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 00:48:50,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:48:50,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1350323362, now seen corresponding path program 1 times [2023-01-28 00:48:50,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:48:50,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791061671] [2023-01-28 00:48:50,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:48:50,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:48:50,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:48:50,473 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 00:48:50,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:48:50,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791061671] [2023-01-28 00:48:50,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791061671] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:48:50,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:48:50,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:48:50,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971658399] [2023-01-28 00:48:50,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:48:50,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:48:50,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:48:50,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:48:50,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:48:50,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 143 [2023-01-28 00:48:50,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 26 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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 00:48:50,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:48:50,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 143 [2023-01-28 00:48:50,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:48:50,511 INFO L130 PetriNetUnfolder]: 76/164 cut-off events. [2023-01-28 00:48:50,512 INFO L131 PetriNetUnfolder]: For 314/340 co-relation queries the response was YES. [2023-01-28 00:48:50,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 164 events. 76/164 cut-off events. For 314/340 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 611 event pairs, 13 based on Foata normal form. 20/175 useless extension candidates. Maximal degree in co-relation 625. Up to 66 conditions per place. [2023-01-28 00:48:50,513 INFO L137 encePairwiseOnDemand]: 138/143 looper letters, 27 selfloop transitions, 5 changer transitions 3/41 dead transitions. [2023-01-28 00:48:50,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 41 transitions, 321 flow [2023-01-28 00:48:50,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:48:50,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:48:50,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 326 transitions. [2023-01-28 00:48:50,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5699300699300699 [2023-01-28 00:48:50,514 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 326 transitions. [2023-01-28 00:48:50,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 326 transitions. [2023-01-28 00:48:50,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:48:50,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 326 transitions. [2023-01-28 00:48:50,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 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 00:48:50,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 00:48:50,516 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 00:48:50,516 INFO L175 Difference]: Start difference. First operand has 42 places, 26 transitions, 166 flow. Second operand 4 states and 326 transitions. [2023-01-28 00:48:50,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 41 transitions, 321 flow [2023-01-28 00:48:50,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 41 transitions, 312 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 00:48:50,517 INFO L231 Difference]: Finished difference. Result has 44 places, 26 transitions, 175 flow [2023-01-28 00:48:50,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=44, PETRI_TRANSITIONS=26} [2023-01-28 00:48:50,518 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-01-28 00:48:50,518 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 26 transitions, 175 flow [2023-01-28 00:48:50,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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 00:48:50,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:48:50,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:48:50,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 00:48:50,519 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 00:48:50,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:48:50,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1140432208, now seen corresponding path program 1 times [2023-01-28 00:48:50,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:48:50,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937539135] [2023-01-28 00:48:50,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:48:50,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:48:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:48:50,626 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 00:48:50,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:48:50,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937539135] [2023-01-28 00:48:50,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937539135] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:48:50,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:48:50,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 00:48:50,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915473444] [2023-01-28 00:48:50,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:48:50,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:48:50,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:48:50,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:48:50,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:48:50,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 143 [2023-01-28 00:48:50,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 26 transitions, 175 flow. Second operand has 5 states, 5 states have (on average 76.6) internal successors, (383), 5 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:48:50,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:48:50,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 143 [2023-01-28 00:48:50,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:48:50,661 INFO L130 PetriNetUnfolder]: 69/147 cut-off events. [2023-01-28 00:48:50,661 INFO L131 PetriNetUnfolder]: For 459/487 co-relation queries the response was YES. [2023-01-28 00:48:50,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 147 events. 69/147 cut-off events. For 459/487 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 553 event pairs, 12 based on Foata normal form. 12/151 useless extension candidates. Maximal degree in co-relation 591. Up to 65 conditions per place. [2023-01-28 00:48:50,663 INFO L137 encePairwiseOnDemand]: 138/143 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2023-01-28 00:48:50,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 37 transitions, 304 flow [2023-01-28 00:48:50,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 00:48:50,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 00:48:50,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 396 transitions. [2023-01-28 00:48:50,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5538461538461539 [2023-01-28 00:48:50,665 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 396 transitions. [2023-01-28 00:48:50,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 396 transitions. [2023-01-28 00:48:50,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:48:50,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 396 transitions. [2023-01-28 00:48:50,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.2) internal successors, (396), 5 states have internal predecessors, (396), 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 00:48:50,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 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 00:48:50,668 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 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 00:48:50,668 INFO L175 Difference]: Start difference. First operand has 44 places, 26 transitions, 175 flow. Second operand 5 states and 396 transitions. [2023-01-28 00:48:50,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 37 transitions, 304 flow [2023-01-28 00:48:50,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 37 transitions, 287 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-28 00:48:50,669 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2023-01-28 00:48:50,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2023-01-28 00:48:50,670 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-01-28 00:48:50,670 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2023-01-28 00:48:50,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.6) internal successors, (383), 5 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:48:50,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 00:48:50,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 00:48:50,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 00:48:50,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 00:48:50,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 00:48:50,675 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:48:50,678 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 00:48:50,678 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 00:48:50,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:48:50 BasicIcfg [2023-01-28 00:48:50,685 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 00:48:50,685 INFO L158 Benchmark]: Toolchain (without parser) took 4536.20ms. Allocated memory was 383.8MB in the beginning and 593.5MB in the end (delta: 209.7MB). Free memory was 326.6MB in the beginning and 328.8MB in the end (delta: -2.1MB). Peak memory consumption was 208.2MB. Max. memory is 16.0GB. [2023-01-28 00:48:50,686 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 383.8MB. Free memory is still 332.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 00:48:50,686 INFO L158 Benchmark]: CACSL2BoogieTranslator took 364.19ms. Allocated memory is still 383.8MB. Free memory was 326.3MB in the beginning and 306.3MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 00:48:50,686 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.37ms. Allocated memory is still 383.8MB. Free memory was 306.3MB in the beginning and 304.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:48:50,686 INFO L158 Benchmark]: Boogie Preprocessor took 33.07ms. Allocated memory is still 383.8MB. Free memory was 304.2MB in the beginning and 302.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:48:50,686 INFO L158 Benchmark]: RCFGBuilder took 382.87ms. Allocated memory was 383.8MB in the beginning and 593.5MB in the end (delta: 209.7MB). Free memory was 302.6MB in the beginning and 555.4MB in the end (delta: -252.8MB). Peak memory consumption was 19.9MB. Max. memory is 16.0GB. [2023-01-28 00:48:50,686 INFO L158 Benchmark]: TraceAbstraction took 3708.75ms. Allocated memory is still 593.5MB. Free memory was 554.9MB in the beginning and 328.8MB in the end (delta: 226.1MB). Peak memory consumption was 226.1MB. Max. memory is 16.0GB. [2023-01-28 00:48:50,687 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 383.8MB. Free memory is still 332.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 364.19ms. Allocated memory is still 383.8MB. Free memory was 326.3MB in the beginning and 306.3MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 43.37ms. Allocated memory is still 383.8MB. Free memory was 306.3MB in the beginning and 304.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.07ms. Allocated memory is still 383.8MB. Free memory was 304.2MB in the beginning and 302.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 382.87ms. Allocated memory was 383.8MB in the beginning and 593.5MB in the end (delta: 209.7MB). Free memory was 302.6MB in the beginning and 555.4MB in the end (delta: -252.8MB). Peak memory consumption was 19.9MB. Max. memory is 16.0GB. * TraceAbstraction took 3708.75ms. Allocated memory is still 593.5MB. Free memory was 554.9MB in the beginning and 328.8MB in the end (delta: 226.1MB). Peak memory consumption was 226.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4s, 79 PlacesBefore, 27 PlacesAfterwards, 70 TransitionsBefore, 18 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 58 TotalNumberOfCompositions, 2098 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1327, independent: 1243, independent conditional: 0, independent unconditional: 1243, dependent: 84, dependent conditional: 0, dependent unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 585, independent: 561, independent conditional: 0, independent unconditional: 561, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1327, independent: 682, independent conditional: 0, independent unconditional: 682, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 585, unknown conditional: 0, unknown unconditional: 585] , Statistics on independence cache: Total cache size (in pairs): 57, Positive cache size: 49, Positive conditional cache size: 0, Positive unconditional cache size: 49, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, 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 7 procedures, 108 locations, 4 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: 3.6s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 107 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 107 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 269 IncrementalHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 10 mSDtfsCounter, 269 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=308occurred in iteration=4, InterpolantAutomatonStates: 33, 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, 1.1s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 399 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 00:48:50,704 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...