/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 07:00:50,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 07:00:50,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 07:00:50,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 07:00:50,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 07:00:50,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 07:00:50,130 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 07:00:50,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 07:00:50,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 07:00:50,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 07:00:50,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 07:00:50,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 07:00:50,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 07:00:50,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 07:00:50,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 07:00:50,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 07:00:50,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 07:00:50,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 07:00:50,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 07:00:50,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 07:00:50,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 07:00:50,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 07:00:50,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 07:00:50,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 07:00:50,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 07:00:50,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 07:00:50,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 07:00:50,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 07:00:50,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 07:00:50,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 07:00:50,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 07:00:50,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 07:00:50,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 07:00:50,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 07:00:50,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 07:00:50,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 07:00:50,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 07:00:50,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 07:00:50,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 07:00:50,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 07:00:50,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 07:00:50,168 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 07:00:50,195 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 07:00:50,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 07:00:50,196 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 07:00:50,196 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 07:00:50,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 07:00:50,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 07:00:50,197 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 07:00:50,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 07:00:50,198 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 07:00:50,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 07:00:50,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 07:00:50,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 07:00:50,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 07:00:50,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 07:00:50,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 07:00:50,199 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 07:00:50,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 07:00:50,199 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 07:00:50,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 07:00:50,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 07:00:50,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 07:00:50,199 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 07:00:50,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 07:00:50,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:00:50,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 07:00:50,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 07:00:50,200 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 07:00:50,200 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 07:00:50,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 07:00:50,200 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 07:00:50,200 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 07:00:50,200 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 07:00:50,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 07:00:50,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 07:00:50,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 07:00:50,424 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 07:00:50,425 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 07:00:50,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.i [2023-01-28 07:00:51,601 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 07:00:51,785 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 07:00:51,785 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.i [2023-01-28 07:00:51,793 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ae10cc3e/475ec9fb8b2b489b95b832530f8bc1f6/FLAGe62e9df1b [2023-01-28 07:00:51,802 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ae10cc3e/475ec9fb8b2b489b95b832530f8bc1f6 [2023-01-28 07:00:51,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 07:00:51,804 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 07:00:51,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 07:00:51,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 07:00:51,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 07:00:51,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:00:51" (1/1) ... [2023-01-28 07:00:51,808 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d7bdbd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:51, skipping insertion in model container [2023-01-28 07:00:51,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:00:51" (1/1) ... [2023-01-28 07:00:51,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 07:00:51,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 07:00:51,926 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/safe008_tso.i[945,958] [2023-01-28 07:00:52,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:00:52,055 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 07:00:52,064 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/safe008_tso.i[945,958] [2023-01-28 07:00:52,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:00:52,120 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:00:52,121 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:00:52,125 INFO L208 MainTranslator]: Completed translation [2023-01-28 07:00:52,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:52 WrapperNode [2023-01-28 07:00:52,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 07:00:52,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 07:00:52,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 07:00:52,127 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 07:00:52,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:52" (1/1) ... [2023-01-28 07:00:52,155 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:52" (1/1) ... [2023-01-28 07:00:52,173 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-01-28 07:00:52,173 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 07:00:52,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 07:00:52,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 07:00:52,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 07:00:52,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:52" (1/1) ... [2023-01-28 07:00:52,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:52" (1/1) ... [2023-01-28 07:00:52,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:52" (1/1) ... [2023-01-28 07:00:52,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:52" (1/1) ... [2023-01-28 07:00:52,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:52" (1/1) ... [2023-01-28 07:00:52,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:52" (1/1) ... [2023-01-28 07:00:52,199 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:52" (1/1) ... [2023-01-28 07:00:52,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:52" (1/1) ... [2023-01-28 07:00:52,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 07:00:52,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 07:00:52,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 07:00:52,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 07:00:52,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:52" (1/1) ... [2023-01-28 07:00:52,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:00:52,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:00:52,250 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 07:00:52,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 07:00:52,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 07:00:52,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 07:00:52,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 07:00:52,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 07:00:52,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 07:00:52,278 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 07:00:52,278 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 07:00:52,278 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 07:00:52,279 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 07:00:52,279 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-28 07:00:52,279 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-28 07:00:52,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 07:00:52,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 07:00:52,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 07:00:52,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 07:00:52,280 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 07:00:52,427 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 07:00:52,428 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 07:00:52,539 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 07:00:52,543 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 07:00:52,543 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 07:00:52,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:00:52 BoogieIcfgContainer [2023-01-28 07:00:52,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 07:00:52,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 07:00:52,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 07:00:52,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 07:00:52,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 07:00:51" (1/3) ... [2023-01-28 07:00:52,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@244f22cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:00:52, skipping insertion in model container [2023-01-28 07:00:52,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:52" (2/3) ... [2023-01-28 07:00:52,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@244f22cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:00:52, skipping insertion in model container [2023-01-28 07:00:52,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:00:52" (3/3) ... [2023-01-28 07:00:52,550 INFO L112 eAbstractionObserver]: Analyzing ICFG safe008_tso.i [2023-01-28 07:00:52,561 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 07:00:52,562 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 07:00:52,562 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 07:00:52,628 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 07:00:52,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2023-01-28 07:00:52,714 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2023-01-28 07:00:52,714 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:00:52,718 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 07:00:52,718 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2023-01-28 07:00:52,722 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2023-01-28 07:00:52,725 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:00:52,741 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 70 transitions, 149 flow [2023-01-28 07:00:52,743 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 70 transitions, 149 flow [2023-01-28 07:00:52,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 70 transitions, 149 flow [2023-01-28 07:00:52,765 INFO L130 PetriNetUnfolder]: 1/70 cut-off events. [2023-01-28 07:00:52,765 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:00:52,765 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 07:00:52,767 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-01-28 07:00:54,372 INFO L134 LiptonReduction]: Checked pairs total: 1927 [2023-01-28 07:00:54,372 INFO L136 LiptonReduction]: Total number of compositions: 56 [2023-01-28 07:00:54,389 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:00:54,394 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;@2af66637, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:00:54,394 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 07:00:54,400 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-01-28 07:00:54,401 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:00:54,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:54,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:54,402 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 07:00:54,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:54,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1968690569, now seen corresponding path program 1 times [2023-01-28 07:00:54,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:54,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769580515] [2023-01-28 07:00:54,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:54,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:54,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:54,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:00:54,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:54,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769580515] [2023-01-28 07:00:54,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769580515] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:54,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:54,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 07:00:54,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463274763] [2023-01-28 07:00:54,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:54,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:00:54,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:54,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:00:54,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:00:54,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 141 [2023-01-28 07:00:54,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:54,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:54,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 141 [2023-01-28 07:00:54,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:54,971 INFO L130 PetriNetUnfolder]: 265/479 cut-off events. [2023-01-28 07:00:54,971 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-28 07:00:54,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 479 events. 265/479 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2321 event pairs, 106 based on Foata normal form. 19/498 useless extension candidates. Maximal degree in co-relation 944. Up to 331 conditions per place. [2023-01-28 07:00:54,979 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 21 selfloop transitions, 5 changer transitions 0/28 dead transitions. [2023-01-28 07:00:54,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 28 transitions, 123 flow [2023-01-28 07:00:54,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:00:54,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:00:54,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 240 transitions. [2023-01-28 07:00:54,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5673758865248227 [2023-01-28 07:00:54,991 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 240 transitions. [2023-01-28 07:00:54,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 240 transitions. [2023-01-28 07:00:54,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:54,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 240 transitions. [2023-01-28 07:00:54,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:54,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:54,999 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:55,000 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 240 transitions. [2023-01-28 07:00:55,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 28 transitions, 123 flow [2023-01-28 07:00:55,002 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 07:00:55,003 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 69 flow [2023-01-28 07:00:55,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2023-01-28 07:00:55,007 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-01-28 07:00:55,008 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 69 flow [2023-01-28 07:00:55,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:55,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:55,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:55,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 07:00:55,008 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 07:00:55,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:55,009 INFO L85 PathProgramCache]: Analyzing trace with hash 899864881, now seen corresponding path program 1 times [2023-01-28 07:00:55,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:55,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631977352] [2023-01-28 07:00:55,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:55,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:55,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:00:55,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:55,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631977352] [2023-01-28 07:00:55,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631977352] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:55,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:55,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:00:55,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907620170] [2023-01-28 07:00:55,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:55,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:00:55,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:55,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:00:55,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:00:55,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 141 [2023-01-28 07:00:55,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:55,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:55,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 141 [2023-01-28 07:00:55,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:55,230 INFO L130 PetriNetUnfolder]: 237/433 cut-off events. [2023-01-28 07:00:55,231 INFO L131 PetriNetUnfolder]: For 87/87 co-relation queries the response was YES. [2023-01-28 07:00:55,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1068 conditions, 433 events. 237/433 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2074 event pairs, 49 based on Foata normal form. 9/441 useless extension candidates. Maximal degree in co-relation 1057. Up to 245 conditions per place. [2023-01-28 07:00:55,232 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 26 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2023-01-28 07:00:55,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 33 transitions, 169 flow [2023-01-28 07:00:55,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:00:55,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:00:55,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 313 transitions. [2023-01-28 07:00:55,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5549645390070922 [2023-01-28 07:00:55,234 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 313 transitions. [2023-01-28 07:00:55,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 313 transitions. [2023-01-28 07:00:55,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:55,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 313 transitions. [2023-01-28 07:00:55,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:55,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:55,239 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:55,239 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 69 flow. Second operand 4 states and 313 transitions. [2023-01-28 07:00:55,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 33 transitions, 169 flow [2023-01-28 07:00:55,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 33 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 07:00:55,240 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 98 flow [2023-01-28 07:00:55,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2023-01-28 07:00:55,241 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-01-28 07:00:55,241 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 98 flow [2023-01-28 07:00:55,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:55,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:55,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:55,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 07:00:55,242 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 07:00:55,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:55,242 INFO L85 PathProgramCache]: Analyzing trace with hash 899864850, now seen corresponding path program 1 times [2023-01-28 07:00:55,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:55,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572041566] [2023-01-28 07:00:55,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:55,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:55,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:00:55,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:55,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572041566] [2023-01-28 07:00:55,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572041566] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:55,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:55,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:00:55,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031979127] [2023-01-28 07:00:55,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:55,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:00:55,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:55,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:00:55,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:00:55,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-01-28 07:00:55,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 98 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 07:00:55,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:55,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-01-28 07:00:55,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:55,443 INFO L130 PetriNetUnfolder]: 414/718 cut-off events. [2023-01-28 07:00:55,444 INFO L131 PetriNetUnfolder]: For 632/632 co-relation queries the response was YES. [2023-01-28 07:00:55,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1936 conditions, 718 events. 414/718 cut-off events. For 632/632 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3659 event pairs, 84 based on Foata normal form. 32/748 useless extension candidates. Maximal degree in co-relation 1921. Up to 233 conditions per place. [2023-01-28 07:00:55,448 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 37 selfloop transitions, 15 changer transitions 1/54 dead transitions. [2023-01-28 07:00:55,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 54 transitions, 324 flow [2023-01-28 07:00:55,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:00:55,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:00:55,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 395 transitions. [2023-01-28 07:00:55,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602836879432624 [2023-01-28 07:00:55,451 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 395 transitions. [2023-01-28 07:00:55,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 395 transitions. [2023-01-28 07:00:55,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:55,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 395 transitions. [2023-01-28 07:00:55,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:55,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:55,454 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:55,454 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 98 flow. Second operand 5 states and 395 transitions. [2023-01-28 07:00:55,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 54 transitions, 324 flow [2023-01-28 07:00:55,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 54 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 07:00:55,457 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 215 flow [2023-01-28 07:00:55,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=215, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2023-01-28 07:00:55,458 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-01-28 07:00:55,458 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 215 flow [2023-01-28 07:00:55,458 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 07:00:55,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:55,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:55,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 07:00:55,458 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 07:00:55,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:55,459 INFO L85 PathProgramCache]: Analyzing trace with hash -2142610716, now seen corresponding path program 1 times [2023-01-28 07:00:55,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:55,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616126695] [2023-01-28 07:00:55,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:55,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:55,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:00:55,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:55,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616126695] [2023-01-28 07:00:55,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616126695] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:55,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:55,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:00:55,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527698006] [2023-01-28 07:00:55,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:55,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:00:55,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:55,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:00:55,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:00:55,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-01-28 07:00:55,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 215 flow. Second operand has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:55,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:55,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-01-28 07:00:55,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:55,668 INFO L130 PetriNetUnfolder]: 439/788 cut-off events. [2023-01-28 07:00:55,669 INFO L131 PetriNetUnfolder]: For 1350/1350 co-relation queries the response was YES. [2023-01-28 07:00:55,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2507 conditions, 788 events. 439/788 cut-off events. For 1350/1350 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4332 event pairs, 113 based on Foata normal form. 26/808 useless extension candidates. Maximal degree in co-relation 2488. Up to 316 conditions per place. [2023-01-28 07:00:55,671 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 32 selfloop transitions, 6 changer transitions 12/51 dead transitions. [2023-01-28 07:00:55,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 51 transitions, 382 flow [2023-01-28 07:00:55,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:00:55,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:00:55,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 385 transitions. [2023-01-28 07:00:55,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460992907801419 [2023-01-28 07:00:55,673 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 385 transitions. [2023-01-28 07:00:55,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 385 transitions. [2023-01-28 07:00:55,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:55,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 385 transitions. [2023-01-28 07:00:55,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:55,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:55,682 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:55,682 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 215 flow. Second operand 5 states and 385 transitions. [2023-01-28 07:00:55,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 51 transitions, 382 flow [2023-01-28 07:00:55,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 382 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 07:00:55,688 INFO L231 Difference]: Finished difference. Result has 44 places, 23 transitions, 161 flow [2023-01-28 07:00:55,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=161, PETRI_PLACES=44, PETRI_TRANSITIONS=23} [2023-01-28 07:00:55,689 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-01-28 07:00:55,689 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 23 transitions, 161 flow [2023-01-28 07:00:55,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:55,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:55,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:55,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 07:00:55,690 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 07:00:55,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:55,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1267758802, now seen corresponding path program 1 times [2023-01-28 07:00:55,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:55,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519963859] [2023-01-28 07:00:55,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:55,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:55,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:55,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:00:55,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:55,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519963859] [2023-01-28 07:00:55,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519963859] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:55,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:55,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:00:55,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756585705] [2023-01-28 07:00:55,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:55,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:00:55,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:55,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:00:55,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:00:55,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 141 [2023-01-28 07:00:55,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 23 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:55,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:55,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 141 [2023-01-28 07:00:55,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:55,888 INFO L130 PetriNetUnfolder]: 155/297 cut-off events. [2023-01-28 07:00:55,888 INFO L131 PetriNetUnfolder]: For 636/636 co-relation queries the response was YES. [2023-01-28 07:00:55,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1064 conditions, 297 events. 155/297 cut-off events. For 636/636 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1211 event pairs, 34 based on Foata normal form. 4/298 useless extension candidates. Maximal degree in co-relation 1041. Up to 130 conditions per place. [2023-01-28 07:00:55,889 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 21 selfloop transitions, 8 changer transitions 0/32 dead transitions. [2023-01-28 07:00:55,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 32 transitions, 255 flow [2023-01-28 07:00:55,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:00:55,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:00:55,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 311 transitions. [2023-01-28 07:00:55,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5514184397163121 [2023-01-28 07:00:55,890 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 311 transitions. [2023-01-28 07:00:55,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 311 transitions. [2023-01-28 07:00:55,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:55,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 311 transitions. [2023-01-28 07:00:55,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:55,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:55,893 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:55,893 INFO L175 Difference]: Start difference. First operand has 44 places, 23 transitions, 161 flow. Second operand 4 states and 311 transitions. [2023-01-28 07:00:55,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 32 transitions, 255 flow [2023-01-28 07:00:55,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 32 transitions, 191 flow, removed 12 selfloop flow, removed 9 redundant places. [2023-01-28 07:00:55,896 INFO L231 Difference]: Finished difference. Result has 40 places, 24 transitions, 139 flow [2023-01-28 07:00:55,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=40, PETRI_TRANSITIONS=24} [2023-01-28 07:00:55,897 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2023-01-28 07:00:55,897 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 24 transitions, 139 flow [2023-01-28 07:00:55,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:55,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:55,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:55,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 07:00:55,898 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 07:00:55,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:55,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1785980554, now seen corresponding path program 1 times [2023-01-28 07:00:55,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:55,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996797043] [2023-01-28 07:00:55,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:55,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:56,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:00:56,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:56,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996797043] [2023-01-28 07:00:56,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996797043] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:56,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:56,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:00:56,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908442028] [2023-01-28 07:00:56,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:56,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:00:56,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:56,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:00:56,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:00:56,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-01-28 07:00:56,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 24 transitions, 139 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 07:00:56,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:56,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-01-28 07:00:56,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:56,066 INFO L130 PetriNetUnfolder]: 248/439 cut-off events. [2023-01-28 07:00:56,066 INFO L131 PetriNetUnfolder]: For 726/726 co-relation queries the response was YES. [2023-01-28 07:00:56,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1382 conditions, 439 events. 248/439 cut-off events. For 726/726 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1708 event pairs, 36 based on Foata normal form. 6/445 useless extension candidates. Maximal degree in co-relation 1364. Up to 135 conditions per place. [2023-01-28 07:00:56,068 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 31 selfloop transitions, 13 changer transitions 3/49 dead transitions. [2023-01-28 07:00:56,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 49 transitions, 350 flow [2023-01-28 07:00:56,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:00:56,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:00:56,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 387 transitions. [2023-01-28 07:00:56,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.548936170212766 [2023-01-28 07:00:56,069 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 387 transitions. [2023-01-28 07:00:56,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 387 transitions. [2023-01-28 07:00:56,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:56,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 387 transitions. [2023-01-28 07:00:56,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.4) internal successors, (387), 5 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:56,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:56,071 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:56,071 INFO L175 Difference]: Start difference. First operand has 40 places, 24 transitions, 139 flow. Second operand 5 states and 387 transitions. [2023-01-28 07:00:56,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 49 transitions, 350 flow [2023-01-28 07:00:56,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 49 transitions, 332 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 07:00:56,073 INFO L231 Difference]: Finished difference. Result has 45 places, 30 transitions, 231 flow [2023-01-28 07:00:56,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=231, PETRI_PLACES=45, PETRI_TRANSITIONS=30} [2023-01-28 07:00:56,073 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 18 predicate places. [2023-01-28 07:00:56,073 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 30 transitions, 231 flow [2023-01-28 07:00:56,073 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 07:00:56,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:56,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:56,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 07:00:56,074 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 07:00:56,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:56,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1761155484, now seen corresponding path program 2 times [2023-01-28 07:00:56,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:56,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987848074] [2023-01-28 07:00:56,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:56,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:56,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:00:56,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:56,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987848074] [2023-01-28 07:00:56,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987848074] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:56,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:56,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:00:56,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922328595] [2023-01-28 07:00:56,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:56,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:00:56,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:56,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:00:56,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:00:56,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-01-28 07:00:56,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 30 transitions, 231 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:56,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:56,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-01-28 07:00:56,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:56,218 INFO L130 PetriNetUnfolder]: 235/425 cut-off events. [2023-01-28 07:00:56,218 INFO L131 PetriNetUnfolder]: For 1065/1065 co-relation queries the response was YES. [2023-01-28 07:00:56,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1460 conditions, 425 events. 235/425 cut-off events. For 1065/1065 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1711 event pairs, 83 based on Foata normal form. 18/442 useless extension candidates. Maximal degree in co-relation 1439. Up to 178 conditions per place. [2023-01-28 07:00:56,220 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 21 selfloop transitions, 4 changer transitions 17/43 dead transitions. [2023-01-28 07:00:56,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 43 transitions, 353 flow [2023-01-28 07:00:56,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:00:56,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:00:56,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 378 transitions. [2023-01-28 07:00:56,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361702127659574 [2023-01-28 07:00:56,221 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 378 transitions. [2023-01-28 07:00:56,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 378 transitions. [2023-01-28 07:00:56,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:56,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 378 transitions. [2023-01-28 07:00:56,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:56,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:56,223 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:56,223 INFO L175 Difference]: Start difference. First operand has 45 places, 30 transitions, 231 flow. Second operand 5 states and 378 transitions. [2023-01-28 07:00:56,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 43 transitions, 353 flow [2023-01-28 07:00:56,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 353 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 07:00:56,225 INFO L231 Difference]: Finished difference. Result has 51 places, 17 transitions, 116 flow [2023-01-28 07:00:56,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=51, PETRI_TRANSITIONS=17} [2023-01-28 07:00:56,226 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 24 predicate places. [2023-01-28 07:00:56,226 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 17 transitions, 116 flow [2023-01-28 07:00:56,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:56,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:56,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:56,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 07:00:56,227 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 07:00:56,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:56,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1190107942, now seen corresponding path program 1 times [2023-01-28 07:00:56,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:56,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96368947] [2023-01-28 07:00:56,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:56,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:56,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:00:56,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:56,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96368947] [2023-01-28 07:00:56,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96368947] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:56,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:56,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:00:56,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893375537] [2023-01-28 07:00:56,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:56,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:00:56,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:56,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:00:56,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:00:56,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 141 [2023-01-28 07:00:56,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 17 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:56,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:56,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 141 [2023-01-28 07:00:56,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:56,367 INFO L130 PetriNetUnfolder]: 62/137 cut-off events. [2023-01-28 07:00:56,368 INFO L131 PetriNetUnfolder]: For 434/436 co-relation queries the response was YES. [2023-01-28 07:00:56,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 137 events. 62/137 cut-off events. For 434/436 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 459 event pairs, 16 based on Foata normal form. 5/139 useless extension candidates. Maximal degree in co-relation 463. Up to 82 conditions per place. [2023-01-28 07:00:56,368 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 19 selfloop transitions, 3 changer transitions 13/38 dead transitions. [2023-01-28 07:00:56,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 38 transitions, 289 flow [2023-01-28 07:00:56,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:00:56,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:00:56,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 397 transitions. [2023-01-28 07:00:56,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5631205673758866 [2023-01-28 07:00:56,370 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 397 transitions. [2023-01-28 07:00:56,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 397 transitions. [2023-01-28 07:00:56,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:56,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 397 transitions. [2023-01-28 07:00:56,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:56,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:56,372 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:56,372 INFO L175 Difference]: Start difference. First operand has 51 places, 17 transitions, 116 flow. Second operand 5 states and 397 transitions. [2023-01-28 07:00:56,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 38 transitions, 289 flow [2023-01-28 07:00:56,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 38 transitions, 185 flow, removed 23 selfloop flow, removed 17 redundant places. [2023-01-28 07:00:56,373 INFO L231 Difference]: Finished difference. Result has 41 places, 19 transitions, 90 flow [2023-01-28 07:00:56,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=90, PETRI_PLACES=41, PETRI_TRANSITIONS=19} [2023-01-28 07:00:56,373 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2023-01-28 07:00:56,373 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 19 transitions, 90 flow [2023-01-28 07:00:56,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:56,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:56,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:56,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 07:00:56,374 INFO L420 AbstractCegarLoop]: === Iteration 9 === 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 07:00:56,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:56,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1386471717, now seen corresponding path program 1 times [2023-01-28 07:00:56,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:56,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098971231] [2023-01-28 07:00:56,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:56,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:56,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:00:56,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:56,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098971231] [2023-01-28 07:00:56,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098971231] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:56,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:56,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:00:56,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857881549] [2023-01-28 07:00:56,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:56,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:00:56,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:56,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:00:56,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:00:56,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 141 [2023-01-28 07:00:56,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 19 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:56,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:56,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 141 [2023-01-28 07:00:56,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:56,522 INFO L130 PetriNetUnfolder]: 40/98 cut-off events. [2023-01-28 07:00:56,522 INFO L131 PetriNetUnfolder]: For 82/94 co-relation queries the response was YES. [2023-01-28 07:00:56,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 98 events. 40/98 cut-off events. For 82/94 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 292 event pairs, 7 based on Foata normal form. 9/104 useless extension candidates. Maximal degree in co-relation 327. Up to 50 conditions per place. [2023-01-28 07:00:56,523 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 20 selfloop transitions, 5 changer transitions 13/41 dead transitions. [2023-01-28 07:00:56,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 264 flow [2023-01-28 07:00:56,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 07:00:56,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 07:00:56,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 472 transitions. [2023-01-28 07:00:56,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.557919621749409 [2023-01-28 07:00:56,525 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 472 transitions. [2023-01-28 07:00:56,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 472 transitions. [2023-01-28 07:00:56,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:56,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 472 transitions. [2023-01-28 07:00:56,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:56,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:56,528 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:56,528 INFO L175 Difference]: Start difference. First operand has 41 places, 19 transitions, 90 flow. Second operand 6 states and 472 transitions. [2023-01-28 07:00:56,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 264 flow [2023-01-28 07:00:56,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 259 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 07:00:56,529 INFO L231 Difference]: Finished difference. Result has 45 places, 19 transitions, 109 flow [2023-01-28 07:00:56,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=109, PETRI_PLACES=45, PETRI_TRANSITIONS=19} [2023-01-28 07:00:56,530 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 18 predicate places. [2023-01-28 07:00:56,530 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 19 transitions, 109 flow [2023-01-28 07:00:56,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:56,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:56,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:56,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 07:00:56,531 INFO L420 AbstractCegarLoop]: === Iteration 10 === 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 07:00:56,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:56,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1424355267, now seen corresponding path program 1 times [2023-01-28 07:00:56,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:56,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663239083] [2023-01-28 07:00:56,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:56,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:56,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:00:56,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:56,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663239083] [2023-01-28 07:00:56,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663239083] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:56,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:56,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 07:00:56,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288414784] [2023-01-28 07:00:56,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:56,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 07:00:56,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:56,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 07:00:56,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 07:00:56,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 141 [2023-01-28 07:00:56,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 19 transitions, 109 flow. Second operand has 6 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:56,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:56,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 141 [2023-01-28 07:00:56,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:56,728 INFO L130 PetriNetUnfolder]: 27/69 cut-off events. [2023-01-28 07:00:56,729 INFO L131 PetriNetUnfolder]: For 134/148 co-relation queries the response was YES. [2023-01-28 07:00:56,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 69 events. 27/69 cut-off events. For 134/148 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 169 event pairs, 6 based on Foata normal form. 8/75 useless extension candidates. Maximal degree in co-relation 249. Up to 27 conditions per place. [2023-01-28 07:00:56,729 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2023-01-28 07:00:56,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 30 transitions, 200 flow [2023-01-28 07:00:56,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 07:00:56,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 07:00:56,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 532 transitions. [2023-01-28 07:00:56,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390070921985816 [2023-01-28 07:00:56,731 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 532 transitions. [2023-01-28 07:00:56,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 532 transitions. [2023-01-28 07:00:56,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:56,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 532 transitions. [2023-01-28 07:00:56,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.0) internal successors, (532), 7 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:56,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:56,733 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:56,733 INFO L175 Difference]: Start difference. First operand has 45 places, 19 transitions, 109 flow. Second operand 7 states and 532 transitions. [2023-01-28 07:00:56,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 30 transitions, 200 flow [2023-01-28 07:00:56,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 30 transitions, 170 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-01-28 07:00:56,734 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2023-01-28 07:00:56,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2023-01-28 07:00:56,734 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-01-28 07:00:56,734 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2023-01-28 07:00:56,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:56,736 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 07:00:56,737 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 07:00:56,737 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 07:00:56,737 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 07:00:56,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 07:00:56,737 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:56,739 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 07:00:56,739 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 07:00:56,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 07:00:56 BasicIcfg [2023-01-28 07:00:56,741 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 07:00:56,741 INFO L158 Benchmark]: Toolchain (without parser) took 4937.24ms. Allocated memory was 402.7MB in the beginning and 610.3MB in the end (delta: 207.6MB). Free memory was 351.6MB in the beginning and 521.2MB in the end (delta: -169.7MB). Peak memory consumption was 39.7MB. Max. memory is 16.0GB. [2023-01-28 07:00:56,741 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 402.7MB. Free memory is still 351.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 07:00:56,742 INFO L158 Benchmark]: CACSL2BoogieTranslator took 321.37ms. Allocated memory is still 402.7MB. Free memory was 351.2MB in the beginning and 331.3MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 07:00:56,742 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.52ms. Allocated memory is still 402.7MB. Free memory was 331.3MB in the beginning and 329.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:00:56,742 INFO L158 Benchmark]: Boogie Preprocessor took 27.87ms. Allocated memory is still 402.7MB. Free memory was 329.2MB in the beginning and 327.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:00:56,742 INFO L158 Benchmark]: RCFGBuilder took 342.59ms. Allocated memory is still 402.7MB. Free memory was 327.8MB in the beginning and 313.8MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-28 07:00:56,742 INFO L158 Benchmark]: TraceAbstraction took 4194.89ms. Allocated memory was 402.7MB in the beginning and 610.3MB in the end (delta: 207.6MB). Free memory was 313.1MB in the beginning and 521.2MB in the end (delta: -208.1MB). Peak memory consumption was 1.9MB. Max. memory is 16.0GB. [2023-01-28 07:00:56,743 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 402.7MB. Free memory is still 351.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 321.37ms. Allocated memory is still 402.7MB. Free memory was 351.2MB in the beginning and 331.3MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 46.52ms. Allocated memory is still 402.7MB. Free memory was 331.3MB in the beginning and 329.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.87ms. Allocated memory is still 402.7MB. Free memory was 329.2MB in the beginning and 327.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 342.59ms. Allocated memory is still 402.7MB. Free memory was 327.8MB in the beginning and 313.8MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4194.89ms. Allocated memory was 402.7MB in the beginning and 610.3MB in the end (delta: 207.6MB). Free memory was 313.1MB in the beginning and 521.2MB in the end (delta: -208.1MB). Peak memory consumption was 1.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 79 PlacesBefore, 27 PlacesAfterwards, 70 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 56 TotalNumberOfCompositions, 1927 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1249, independent: 1172, independent conditional: 0, independent unconditional: 1172, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 578, independent: 554, independent conditional: 0, independent unconditional: 554, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1249, independent: 618, independent conditional: 0, independent unconditional: 618, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 578, unknown conditional: 0, unknown unconditional: 578] , Statistics on independence cache: Total cache size (in pairs): 50, Positive cache size: 43, Positive conditional cache size: 0, Positive unconditional cache size: 43, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, 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: 4.1s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 175 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 175 mSDsluCounter, 27 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 426 IncrementalHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 14 mSDtfsCounter, 426 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=231occurred in iteration=6, InterpolantAutomatonStates: 49, 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, 1.2s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 103 ConstructedInterpolants, 0 QuantifiedInterpolants, 439 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 07:00:56,757 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...