/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/goblint-regression/28-race_reach_86-lists_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 08:15:34,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 08:15:34,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 08:15:34,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 08:15:34,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 08:15:34,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 08:15:34,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 08:15:34,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 08:15:34,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 08:15:34,357 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 08:15:34,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 08:15:34,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 08:15:34,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 08:15:34,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 08:15:34,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 08:15:34,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 08:15:34,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 08:15:34,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 08:15:34,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 08:15:34,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 08:15:34,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 08:15:34,365 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 08:15:34,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 08:15:34,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 08:15:34,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 08:15:34,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 08:15:34,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 08:15:34,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 08:15:34,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 08:15:34,370 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 08:15:34,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 08:15:34,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 08:15:34,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 08:15:34,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 08:15:34,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 08:15:34,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 08:15:34,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 08:15:34,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 08:15:34,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 08:15:34,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 08:15:34,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 08:15:34,374 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 08:15:34,389 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 08:15:34,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 08:15:34,390 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 08:15:34,390 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 08:15:34,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 08:15:34,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 08:15:34,390 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 08:15:34,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 08:15:34,391 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 08:15:34,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 08:15:34,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 08:15:34,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 08:15:34,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 08:15:34,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 08:15:34,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 08:15:34,391 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 08:15:34,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 08:15:34,391 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 08:15:34,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 08:15:34,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 08:15:34,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 08:15:34,392 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 08:15:34,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 08:15:34,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 08:15:34,392 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 08:15:34,392 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 08:15:34,392 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 08:15:34,392 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 08:15:34,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 08:15:34,392 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 08:15:34,392 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 08:15:34,393 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 08:15:34,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 08:15:34,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 08:15:34,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 08:15:34,578 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 08:15:34,578 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 08:15:34,579 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i [2023-01-28 08:15:35,517 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 08:15:35,710 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 08:15:35,711 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i [2023-01-28 08:15:35,727 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2e13fbd6/b4e8a679067748d6914de52b32b162d6/FLAGc35d0ac96 [2023-01-28 08:15:35,738 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2e13fbd6/b4e8a679067748d6914de52b32b162d6 [2023-01-28 08:15:35,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 08:15:35,740 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 08:15:35,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 08:15:35,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 08:15:35,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 08:15:35,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 08:15:35" (1/1) ... [2023-01-28 08:15:35,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@677d3cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:15:35, skipping insertion in model container [2023-01-28 08:15:35,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 08:15:35" (1/1) ... [2023-01-28 08:15:35,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 08:15:35,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 08:15:36,061 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i[47038,47051] [2023-01-28 08:15:36,099 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 08:15:36,170 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 08:15:36,202 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i[47038,47051] [2023-01-28 08:15:36,214 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 08:15:36,264 INFO L208 MainTranslator]: Completed translation [2023-01-28 08:15:36,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:15:36 WrapperNode [2023-01-28 08:15:36,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 08:15:36,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 08:15:36,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 08:15:36,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 08:15:36,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:15:36" (1/1) ... [2023-01-28 08:15:36,290 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:15:36" (1/1) ... [2023-01-28 08:15:36,333 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 232 [2023-01-28 08:15:36,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 08:15:36,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 08:15:36,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 08:15:36,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 08:15:36,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:15:36" (1/1) ... [2023-01-28 08:15:36,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:15:36" (1/1) ... [2023-01-28 08:15:36,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:15:36" (1/1) ... [2023-01-28 08:15:36,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:15:36" (1/1) ... [2023-01-28 08:15:36,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:15:36" (1/1) ... [2023-01-28 08:15:36,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:15:36" (1/1) ... [2023-01-28 08:15:36,372 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:15:36" (1/1) ... [2023-01-28 08:15:36,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:15:36" (1/1) ... [2023-01-28 08:15:36,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 08:15:36,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 08:15:36,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 08:15:36,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 08:15:36,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:15:36" (1/1) ... [2023-01-28 08:15:36,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 08:15:36,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:15:36,406 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 08:15:36,411 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 08:15:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 08:15:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-01-28 08:15:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-01-28 08:15:36,430 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-01-28 08:15:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 08:15:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 08:15:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-01-28 08:15:36,431 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-01-28 08:15:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 08:15:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 08:15:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 08:15:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 08:15:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-28 08:15:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 08:15:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 08:15:36,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 08:15:36,432 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 08:15:36,565 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 08:15:36,567 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 08:15:36,855 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 08:15:36,864 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 08:15:36,864 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-01-28 08:15:36,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 08:15:36 BoogieIcfgContainer [2023-01-28 08:15:36,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 08:15:36,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 08:15:36,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 08:15:36,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 08:15:36,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 08:15:35" (1/3) ... [2023-01-28 08:15:36,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38805d3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 08:15:36, skipping insertion in model container [2023-01-28 08:15:36,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:15:36" (2/3) ... [2023-01-28 08:15:36,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38805d3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 08:15:36, skipping insertion in model container [2023-01-28 08:15:36,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 08:15:36" (3/3) ... [2023-01-28 08:15:36,871 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2023-01-28 08:15:36,882 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 08:15:36,883 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 08:15:36,883 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 08:15:36,967 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 08:15:36,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 233 transitions, 488 flow [2023-01-28 08:15:37,093 INFO L130 PetriNetUnfolder]: 54/435 cut-off events. [2023-01-28 08:15:37,093 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2023-01-28 08:15:37,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 435 events. 54/435 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1721 event pairs, 0 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 215. Up to 8 conditions per place. [2023-01-28 08:15:37,102 INFO L82 GeneralOperation]: Start removeDead. Operand has 213 places, 233 transitions, 488 flow [2023-01-28 08:15:37,110 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 212 places, 230 transitions, 474 flow [2023-01-28 08:15:37,112 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 08:15:37,125 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 212 places, 230 transitions, 474 flow [2023-01-28 08:15:37,127 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 212 places, 230 transitions, 474 flow [2023-01-28 08:15:37,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 230 transitions, 474 flow [2023-01-28 08:15:37,175 INFO L130 PetriNetUnfolder]: 50/422 cut-off events. [2023-01-28 08:15:37,175 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 08:15:37,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 422 events. 50/422 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1638 event pairs, 0 based on Foata normal form. 0/358 useless extension candidates. Maximal degree in co-relation 211. Up to 8 conditions per place. [2023-01-28 08:15:37,186 INFO L119 LiptonReduction]: Number of co-enabled transitions 15822 [2023-01-28 08:15:41,720 INFO L134 LiptonReduction]: Checked pairs total: 26149 [2023-01-28 08:15:41,720 INFO L136 LiptonReduction]: Total number of compositions: 184 [2023-01-28 08:15:41,731 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 08:15:41,735 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;@195142b2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 08:15:41,735 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-28 08:15:41,741 INFO L130 PetriNetUnfolder]: 8/75 cut-off events. [2023-01-28 08:15:41,742 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 08:15:41,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:15:41,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:15:41,743 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-28 08:15:41,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:15:41,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1009720235, now seen corresponding path program 1 times [2023-01-28 08:15:41,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:15:41,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771269457] [2023-01-28 08:15:41,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:15:41,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:15:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:15:41,979 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 08:15:41,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:15:41,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771269457] [2023-01-28 08:15:41,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771269457] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:15:41,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:15:41,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 08:15:41,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882399307] [2023-01-28 08:15:41,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:15:41,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 08:15:41,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:15:42,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 08:15:42,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 08:15:42,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 417 [2023-01-28 08:15:42,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 64 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 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 08:15:42,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:15:42,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 417 [2023-01-28 08:15:42,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:15:42,436 INFO L130 PetriNetUnfolder]: 3305/5515 cut-off events. [2023-01-28 08:15:42,437 INFO L131 PetriNetUnfolder]: For 86/86 co-relation queries the response was YES. [2023-01-28 08:15:42,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10752 conditions, 5515 events. 3305/5515 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 30876 event pairs, 3078 based on Foata normal form. 276/4856 useless extension candidates. Maximal degree in co-relation 9713. Up to 5166 conditions per place. [2023-01-28 08:15:42,449 INFO L137 encePairwiseOnDemand]: 403/417 looper letters, 35 selfloop transitions, 2 changer transitions 14/54 dead transitions. [2023-01-28 08:15:42,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 54 transitions, 220 flow [2023-01-28 08:15:42,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 08:15:42,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 08:15:42,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 664 transitions. [2023-01-28 08:15:42,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.530775379696243 [2023-01-28 08:15:42,465 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 664 transitions. [2023-01-28 08:15:42,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 664 transitions. [2023-01-28 08:15:42,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:15:42,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 664 transitions. [2023-01-28 08:15:42,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 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 08:15:42,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 417.0) internal successors, (1668), 4 states have internal predecessors, (1668), 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 08:15:42,478 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 417.0) internal successors, (1668), 4 states have internal predecessors, (1668), 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 08:15:42,480 INFO L175 Difference]: Start difference. First operand has 53 places, 64 transitions, 142 flow. Second operand 3 states and 664 transitions. [2023-01-28 08:15:42,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 54 transitions, 220 flow [2023-01-28 08:15:42,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 54 transitions, 217 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 08:15:42,487 INFO L231 Difference]: Finished difference. Result has 55 places, 40 transitions, 101 flow [2023-01-28 08:15:42,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=55, PETRI_TRANSITIONS=40} [2023-01-28 08:15:42,492 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 2 predicate places. [2023-01-28 08:15:42,492 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 40 transitions, 101 flow [2023-01-28 08:15:42,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 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 08:15:42,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:15:42,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:15:42,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 08:15:42,494 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-28 08:15:42,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:15:42,496 INFO L85 PathProgramCache]: Analyzing trace with hash 2048382885, now seen corresponding path program 1 times [2023-01-28 08:15:42,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:15:42,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652004006] [2023-01-28 08:15:42,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:15:42,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:15:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:15:42,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 08:15:42,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:15:42,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652004006] [2023-01-28 08:15:42,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652004006] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:15:42,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813617712] [2023-01-28 08:15:42,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:15:42,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:15:42,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:15:42,640 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:15:42,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 08:15:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:15:42,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 2 conjunts are in the unsatisfiable core [2023-01-28 08:15:42,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:15:42,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 08:15:42,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:15:42,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813617712] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:15:42,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:15:42,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-01-28 08:15:42,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29189622] [2023-01-28 08:15:42,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:15:42,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 08:15:42,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:15:42,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 08:15:42,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 08:15:42,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 417 [2023-01-28 08:15:42,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 40 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 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 08:15:42,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:15:42,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 417 [2023-01-28 08:15:42,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:15:42,998 INFO L130 PetriNetUnfolder]: 1315/2228 cut-off events. [2023-01-28 08:15:42,999 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-01-28 08:15:43,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4422 conditions, 2228 events. 1315/2228 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 11131 event pairs, 641 based on Foata normal form. 0/1868 useless extension candidates. Maximal degree in co-relation 4409. Up to 2128 conditions per place. [2023-01-28 08:15:43,007 INFO L137 encePairwiseOnDemand]: 414/417 looper letters, 43 selfloop transitions, 2 changer transitions 1/49 dead transitions. [2023-01-28 08:15:43,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 49 transitions, 211 flow [2023-01-28 08:15:43,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 08:15:43,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 08:15:43,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 652 transitions. [2023-01-28 08:15:43,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5211830535571543 [2023-01-28 08:15:43,009 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 652 transitions. [2023-01-28 08:15:43,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 652 transitions. [2023-01-28 08:15:43,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:15:43,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 652 transitions. [2023-01-28 08:15:43,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 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 08:15:43,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 417.0) internal successors, (1668), 4 states have internal predecessors, (1668), 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 08:15:43,013 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 417.0) internal successors, (1668), 4 states have internal predecessors, (1668), 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 08:15:43,013 INFO L175 Difference]: Start difference. First operand has 55 places, 40 transitions, 101 flow. Second operand 3 states and 652 transitions. [2023-01-28 08:15:43,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 49 transitions, 211 flow [2023-01-28 08:15:43,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 49 transitions, 207 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 08:15:43,015 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 105 flow [2023-01-28 08:15:43,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-01-28 08:15:43,016 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -9 predicate places. [2023-01-28 08:15:43,016 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 105 flow [2023-01-28 08:15:43,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 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 08:15:43,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:15:43,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:15:43,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 08:15:43,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:15:43,227 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-28 08:15:43,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:15:43,230 INFO L85 PathProgramCache]: Analyzing trace with hash -2116295868, now seen corresponding path program 1 times [2023-01-28 08:15:43,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:15:43,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411998391] [2023-01-28 08:15:43,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:15:43,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:15:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:15:43,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 08:15:43,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:15:43,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411998391] [2023-01-28 08:15:43,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411998391] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:15:43,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066840618] [2023-01-28 08:15:43,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:15:43,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:15:43,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:15:43,339 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:15:43,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 08:15:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:15:43,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-28 08:15:43,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:15:43,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 08:15:43,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:15:43,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 08:15:43,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066840618] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:15:43,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:15:43,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-01-28 08:15:43,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548008338] [2023-01-28 08:15:43,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:15:43,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 08:15:43,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:15:43,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 08:15:43,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 08:15:43,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 417 [2023-01-28 08:15:43,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 105 flow. Second operand has 7 states, 7 states have (on average 204.0) internal successors, (1428), 7 states have internal predecessors, (1428), 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 08:15:43,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:15:43,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 417 [2023-01-28 08:15:43,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:15:43,698 INFO L130 PetriNetUnfolder]: 1315/2274 cut-off events. [2023-01-28 08:15:43,698 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-01-28 08:15:43,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4498 conditions, 2274 events. 1315/2274 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 11390 event pairs, 1216 based on Foata normal form. 3/1918 useless extension candidates. Maximal degree in co-relation 4470. Up to 2138 conditions per place. [2023-01-28 08:15:43,707 INFO L137 encePairwiseOnDemand]: 414/417 looper letters, 35 selfloop transitions, 5 changer transitions 0/43 dead transitions. [2023-01-28 08:15:43,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 43 transitions, 197 flow [2023-01-28 08:15:43,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 08:15:43,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 08:15:43,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1249 transitions. [2023-01-28 08:15:43,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49920063948840926 [2023-01-28 08:15:43,709 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1249 transitions. [2023-01-28 08:15:43,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1249 transitions. [2023-01-28 08:15:43,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:15:43,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1249 transitions. [2023-01-28 08:15:43,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 208.16666666666666) internal successors, (1249), 6 states have internal predecessors, (1249), 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 08:15:43,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 417.0) internal successors, (2919), 7 states have internal predecessors, (2919), 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 08:15:43,716 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 417.0) internal successors, (2919), 7 states have internal predecessors, (2919), 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 08:15:43,716 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 105 flow. Second operand 6 states and 1249 transitions. [2023-01-28 08:15:43,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 43 transitions, 197 flow [2023-01-28 08:15:43,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 193 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 08:15:43,718 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 137 flow [2023-01-28 08:15:43,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=137, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2023-01-28 08:15:43,719 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -3 predicate places. [2023-01-28 08:15:43,719 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 137 flow [2023-01-28 08:15:43,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 204.0) internal successors, (1428), 7 states have internal predecessors, (1428), 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 08:15:43,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:15:43,720 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:15:43,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 08:15:43,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-01-28 08:15:43,926 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-28 08:15:43,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:15:43,927 INFO L85 PathProgramCache]: Analyzing trace with hash -687254416, now seen corresponding path program 2 times [2023-01-28 08:15:43,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:15:43,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827227737] [2023-01-28 08:15:43,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:15:43,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:15:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:15:44,030 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-28 08:15:44,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:15:44,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827227737] [2023-01-28 08:15:44,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827227737] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:15:44,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983943371] [2023-01-28 08:15:44,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 08:15:44,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:15:44,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:15:44,036 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:15:44,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 08:15:44,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 08:15:44,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:15:44,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 08:15:44,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:15:44,223 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 08:15:44,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:15:44,274 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 08:15:44,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983943371] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:15:44,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:15:44,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2023-01-28 08:15:44,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077751920] [2023-01-28 08:15:44,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:15:44,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 08:15:44,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:15:44,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 08:15:44,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-01-28 08:15:44,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 417 [2023-01-28 08:15:44,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 137 flow. Second operand has 14 states, 14 states have (on average 197.28571428571428) internal successors, (2762), 14 states have internal predecessors, (2762), 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 08:15:44,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:15:44,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 417 [2023-01-28 08:15:44,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:15:44,342 INFO L130 PetriNetUnfolder]: 17/58 cut-off events. [2023-01-28 08:15:44,343 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2023-01-28 08:15:44,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 58 events. 17/58 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 15/73 useless extension candidates. Maximal degree in co-relation 155. Up to 34 conditions per place. [2023-01-28 08:15:44,343 INFO L137 encePairwiseOnDemand]: 412/417 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2023-01-28 08:15:44,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 198 flow [2023-01-28 08:15:44,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 08:15:44,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 08:15:44,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2770 transitions. [2023-01-28 08:15:44,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47447756080849607 [2023-01-28 08:15:44,347 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2770 transitions. [2023-01-28 08:15:44,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2770 transitions. [2023-01-28 08:15:44,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:15:44,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2770 transitions. [2023-01-28 08:15:44,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 197.85714285714286) internal successors, (2770), 14 states have internal predecessors, (2770), 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 08:15:44,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 417.0) internal successors, (6255), 15 states have internal predecessors, (6255), 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 08:15:44,359 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 417.0) internal successors, (6255), 15 states have internal predecessors, (6255), 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 08:15:44,359 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 137 flow. Second operand 14 states and 2770 transitions. [2023-01-28 08:15:44,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 198 flow [2023-01-28 08:15:44,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 182 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-01-28 08:15:44,360 INFO L231 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2023-01-28 08:15:44,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2023-01-28 08:15:44,361 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -14 predicate places. [2023-01-28 08:15:44,361 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2023-01-28 08:15:44,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 197.28571428571428) internal successors, (2762), 14 states have internal predecessors, (2762), 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 08:15:44,364 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-01-28 08:15:44,364 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-01-28 08:15:44,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 08:15:44,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:15:44,570 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-01-28 08:15:44,571 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE (1/2) [2023-01-28 08:15:44,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 233 transitions, 488 flow [2023-01-28 08:15:44,613 INFO L130 PetriNetUnfolder]: 54/435 cut-off events. [2023-01-28 08:15:44,614 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2023-01-28 08:15:44,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 435 events. 54/435 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1721 event pairs, 0 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 215. Up to 8 conditions per place. [2023-01-28 08:15:44,615 INFO L82 GeneralOperation]: Start removeDead. Operand has 213 places, 233 transitions, 488 flow [2023-01-28 08:15:44,617 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 213 places, 231 transitions, 478 flow [2023-01-28 08:15:44,617 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 08:15:44,617 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 213 places, 231 transitions, 478 flow [2023-01-28 08:15:44,617 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 213 places, 231 transitions, 478 flow [2023-01-28 08:15:44,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 231 transitions, 478 flow [2023-01-28 08:15:44,648 INFO L130 PetriNetUnfolder]: 50/423 cut-off events. [2023-01-28 08:15:44,649 INFO L131 PetriNetUnfolder]: For 4/8 co-relation queries the response was YES. [2023-01-28 08:15:44,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 423 events. 50/423 cut-off events. For 4/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1639 event pairs, 0 based on Foata normal form. 0/359 useless extension candidates. Maximal degree in co-relation 211. Up to 8 conditions per place. [2023-01-28 08:15:44,656 INFO L119 LiptonReduction]: Number of co-enabled transitions 15880 [2023-01-28 08:15:49,045 INFO L134 LiptonReduction]: Checked pairs total: 24357 [2023-01-28 08:15:49,045 INFO L136 LiptonReduction]: Total number of compositions: 184 [2023-01-28 08:15:49,046 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 08:15:49,046 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;@195142b2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 08:15:49,046 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-28 08:15:49,052 INFO L130 PetriNetUnfolder]: 1/20 cut-off events. [2023-01-28 08:15:49,052 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 08:15:49,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:15:49,053 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-01-28 08:15:49,053 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:15:49,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:15:49,053 INFO L85 PathProgramCache]: Analyzing trace with hash 819010612, now seen corresponding path program 1 times [2023-01-28 08:15:49,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:15:49,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953750279] [2023-01-28 08:15:49,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:15:49,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:15:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:15:49,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:15:49,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:15:49,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953750279] [2023-01-28 08:15:49,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953750279] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:15:49,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:15:49,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 08:15:49,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325182567] [2023-01-28 08:15:49,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:15:49,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 08:15:49,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:15:49,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 08:15:49,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 08:15:49,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 417 [2023-01-28 08:15:49,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 65 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 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 08:15:49,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:15:49,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 417 [2023-01-28 08:15:49,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:15:49,422 INFO L130 PetriNetUnfolder]: 3305/5508 cut-off events. [2023-01-28 08:15:49,423 INFO L131 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2023-01-28 08:15:49,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10747 conditions, 5508 events. 3305/5508 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 30725 event pairs, 3078 based on Foata normal form. 276/4849 useless extension candidates. Maximal degree in co-relation 9706. Up to 5166 conditions per place. [2023-01-28 08:15:49,435 INFO L137 encePairwiseOnDemand]: 403/417 looper letters, 38 selfloop transitions, 2 changer transitions 9/55 dead transitions. [2023-01-28 08:15:49,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 224 flow [2023-01-28 08:15:49,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 08:15:49,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 08:15:49,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 664 transitions. [2023-01-28 08:15:49,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.530775379696243 [2023-01-28 08:15:49,439 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 664 transitions. [2023-01-28 08:15:49,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 664 transitions. [2023-01-28 08:15:49,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:15:49,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 664 transitions. [2023-01-28 08:15:49,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 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 08:15:49,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 417.0) internal successors, (1668), 4 states have internal predecessors, (1668), 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 08:15:49,442 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 417.0) internal successors, (1668), 4 states have internal predecessors, (1668), 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 08:15:49,442 INFO L175 Difference]: Start difference. First operand has 54 places, 65 transitions, 146 flow. Second operand 3 states and 664 transitions. [2023-01-28 08:15:49,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 224 flow [2023-01-28 08:15:49,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 224 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 08:15:49,444 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 112 flow [2023-01-28 08:15:49,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2023-01-28 08:15:49,444 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-01-28 08:15:49,444 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 112 flow [2023-01-28 08:15:49,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 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 08:15:49,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:15:49,445 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-01-28 08:15:49,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 08:15:49,445 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:15:49,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:15:49,445 INFO L85 PathProgramCache]: Analyzing trace with hash -2018159255, now seen corresponding path program 1 times [2023-01-28 08:15:49,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:15:49,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572042704] [2023-01-28 08:15:49,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:15:49,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:15:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:15:49,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:15:49,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:15:49,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572042704] [2023-01-28 08:15:49,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572042704] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:15:49,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689124252] [2023-01-28 08:15:49,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:15:49,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:15:49,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:15:49,489 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:15:49,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 08:15:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:15:49,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-28 08:15:49,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:15:49,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:15:49,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:15:49,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:15:49,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689124252] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:15:49,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:15:49,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-01-28 08:15:49,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809921196] [2023-01-28 08:15:49,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:15:49,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 08:15:49,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:15:49,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 08:15:49,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 08:15:49,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 417 [2023-01-28 08:15:49,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 112 flow. Second operand has 7 states, 7 states have (on average 202.57142857142858) internal successors, (1418), 7 states have internal predecessors, (1418), 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 08:15:49,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:15:49,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 417 [2023-01-28 08:15:49,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:15:49,805 INFO L130 PetriNetUnfolder]: 1331/2310 cut-off events. [2023-01-28 08:15:49,806 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-01-28 08:15:49,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4506 conditions, 2310 events. 1331/2310 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11222 event pairs, 1250 based on Foata normal form. 0/1961 useless extension candidates. Maximal degree in co-relation 4493. Up to 2152 conditions per place. [2023-01-28 08:15:49,812 INFO L137 encePairwiseOnDemand]: 414/417 looper letters, 38 selfloop transitions, 5 changer transitions 0/49 dead transitions. [2023-01-28 08:15:49,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 49 transitions, 210 flow [2023-01-28 08:15:49,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 08:15:49,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 08:15:49,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1252 transitions. [2023-01-28 08:15:49,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5003996802557954 [2023-01-28 08:15:49,814 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1252 transitions. [2023-01-28 08:15:49,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1252 transitions. [2023-01-28 08:15:49,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:15:49,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1252 transitions. [2023-01-28 08:15:49,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 208.66666666666666) internal successors, (1252), 6 states have internal predecessors, (1252), 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 08:15:49,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 417.0) internal successors, (2919), 7 states have internal predecessors, (2919), 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 08:15:49,820 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 417.0) internal successors, (2919), 7 states have internal predecessors, (2919), 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 08:15:49,820 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 112 flow. Second operand 6 states and 1252 transitions. [2023-01-28 08:15:49,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 49 transitions, 210 flow [2023-01-28 08:15:49,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 49 transitions, 206 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 08:15:49,821 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 144 flow [2023-01-28 08:15:49,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=144, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2023-01-28 08:15:49,821 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-01-28 08:15:49,821 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 144 flow [2023-01-28 08:15:49,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 202.57142857142858) internal successors, (1418), 7 states have internal predecessors, (1418), 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 08:15:49,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:15:49,822 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-01-28 08:15:49,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-01-28 08:15:50,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:15:50,027 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:15:50,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:15:50,027 INFO L85 PathProgramCache]: Analyzing trace with hash -458210956, now seen corresponding path program 2 times [2023-01-28 08:15:50,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:15:50,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346326149] [2023-01-28 08:15:50,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:15:50,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:15:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:15:50,108 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:15:50,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:15:50,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346326149] [2023-01-28 08:15:50,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346326149] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:15:50,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862058697] [2023-01-28 08:15:50,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 08:15:50,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:15:50,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:15:50,110 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:15:50,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 08:15:50,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 08:15:50,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:15:50,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 08:15:50,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:15:50,260 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:15:50,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:15:50,295 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:15:50,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862058697] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:15:50,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:15:50,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-01-28 08:15:50,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050154211] [2023-01-28 08:15:50,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:15:50,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 08:15:50,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:15:50,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 08:15:50,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-01-28 08:15:50,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 417 [2023-01-28 08:15:50,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 144 flow. Second operand has 13 states, 13 states have (on average 202.30769230769232) internal successors, (2630), 13 states have internal predecessors, (2630), 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 08:15:50,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:15:50,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 417 [2023-01-28 08:15:50,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:15:50,530 INFO L130 PetriNetUnfolder]: 1331/2316 cut-off events. [2023-01-28 08:15:50,530 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-01-28 08:15:50,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4543 conditions, 2316 events. 1331/2316 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11213 event pairs, 1250 based on Foata normal form. 6/1974 useless extension candidates. Maximal degree in co-relation 4484. Up to 2152 conditions per place. [2023-01-28 08:15:50,538 INFO L137 encePairwiseOnDemand]: 414/417 looper letters, 38 selfloop transitions, 11 changer transitions 0/55 dead transitions. [2023-01-28 08:15:50,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 55 transitions, 278 flow [2023-01-28 08:15:50,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 08:15:50,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 08:15:50,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2467 transitions. [2023-01-28 08:15:50,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49300559552358114 [2023-01-28 08:15:50,542 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2467 transitions. [2023-01-28 08:15:50,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2467 transitions. [2023-01-28 08:15:50,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:15:50,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2467 transitions. [2023-01-28 08:15:50,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 205.58333333333334) internal successors, (2467), 12 states have internal predecessors, (2467), 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 08:15:50,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 417.0) internal successors, (5421), 13 states have internal predecessors, (5421), 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 08:15:50,552 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 417.0) internal successors, (5421), 13 states have internal predecessors, (5421), 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 08:15:50,552 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 144 flow. Second operand 12 states and 2467 transitions. [2023-01-28 08:15:50,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 55 transitions, 278 flow [2023-01-28 08:15:50,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 55 transitions, 264 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-01-28 08:15:50,553 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 214 flow [2023-01-28 08:15:50,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=214, PETRI_PLACES=73, PETRI_TRANSITIONS=55} [2023-01-28 08:15:50,554 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2023-01-28 08:15:50,554 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 214 flow [2023-01-28 08:15:50,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 202.30769230769232) internal successors, (2630), 13 states have internal predecessors, (2630), 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 08:15:50,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:15:50,555 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-01-28 08:15:50,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 08:15:50,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:15:50,763 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:15:50,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:15:50,763 INFO L85 PathProgramCache]: Analyzing trace with hash -691974828, now seen corresponding path program 3 times [2023-01-28 08:15:50,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:15:50,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412459910] [2023-01-28 08:15:50,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:15:50,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:15:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:15:51,078 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:15:51,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:15:51,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412459910] [2023-01-28 08:15:51,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412459910] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:15:51,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471379912] [2023-01-28 08:15:51,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 08:15:51,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:15:51,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:15:51,080 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:15:51,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 08:19:43,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-01-28 08:19:43,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:19:43,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 08:19:43,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:19:43,457 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:19:43,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:19:43,582 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:19:43,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471379912] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:19:43,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:19:43,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-01-28 08:19:43,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903900624] [2023-01-28 08:19:43,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:19:43,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 08:19:43,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:19:43,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 08:19:43,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-01-28 08:19:43,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 417 [2023-01-28 08:19:43,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 55 transitions, 214 flow. Second operand has 25 states, 25 states have (on average 202.16) internal successors, (5054), 25 states have internal predecessors, (5054), 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 08:19:43,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:19:43,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 417 [2023-01-28 08:19:43,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:19:43,845 INFO L130 PetriNetUnfolder]: 1331/2328 cut-off events. [2023-01-28 08:19:43,845 INFO L131 PetriNetUnfolder]: For 471/471 co-relation queries the response was YES. [2023-01-28 08:19:43,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4627 conditions, 2328 events. 1331/2328 cut-off events. For 471/471 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11222 event pairs, 1250 based on Foata normal form. 12/1992 useless extension candidates. Maximal degree in co-relation 4490. Up to 2152 conditions per place. [2023-01-28 08:19:43,854 INFO L137 encePairwiseOnDemand]: 414/417 looper letters, 38 selfloop transitions, 23 changer transitions 0/67 dead transitions. [2023-01-28 08:19:43,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 67 transitions, 432 flow [2023-01-28 08:19:43,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-28 08:19:43,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-28 08:19:43,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4897 transitions. [2023-01-28 08:19:43,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.489308553157474 [2023-01-28 08:19:43,862 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4897 transitions. [2023-01-28 08:19:43,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4897 transitions. [2023-01-28 08:19:43,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:19:43,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4897 transitions. [2023-01-28 08:19:43,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 204.04166666666666) internal successors, (4897), 24 states have internal predecessors, (4897), 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 08:19:43,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 417.0) internal successors, (10425), 25 states have internal predecessors, (10425), 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 08:19:43,888 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 417.0) internal successors, (10425), 25 states have internal predecessors, (10425), 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 08:19:43,888 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 214 flow. Second operand 24 states and 4897 transitions. [2023-01-28 08:19:43,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 67 transitions, 432 flow [2023-01-28 08:19:43,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 67 transitions, 360 flow, removed 31 selfloop flow, removed 5 redundant places. [2023-01-28 08:19:43,890 INFO L231 Difference]: Finished difference. Result has 103 places, 67 transitions, 334 flow [2023-01-28 08:19:43,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=334, PETRI_PLACES=103, PETRI_TRANSITIONS=67} [2023-01-28 08:19:43,891 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 49 predicate places. [2023-01-28 08:19:43,891 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 67 transitions, 334 flow [2023-01-28 08:19:43,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 202.16) internal successors, (5054), 25 states have internal predecessors, (5054), 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 08:19:43,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:19:43,892 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 2, 1, 1, 1, 1, 1] [2023-01-28 08:19:43,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 08:19:44,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:19:44,109 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:19:44,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:19:44,109 INFO L85 PathProgramCache]: Analyzing trace with hash 445656340, now seen corresponding path program 4 times [2023-01-28 08:19:44,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:19:44,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942583180] [2023-01-28 08:19:44,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:19:44,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:19:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:19:44,941 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:19:44,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:19:44,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942583180] [2023-01-28 08:19:44,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942583180] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:19:44,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554960080] [2023-01-28 08:19:44,942 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 08:19:44,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:19:44,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:19:44,943 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:19:44,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 08:19:45,287 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 08:19:45,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:19:45,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 1569 conjuncts, 24 conjunts are in the unsatisfiable core [2023-01-28 08:19:45,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:19:45,336 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:19:45,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:19:45,842 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:19:45,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554960080] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:19:45,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:19:45,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-01-28 08:19:45,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101841833] [2023-01-28 08:19:45,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:19:45,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-01-28 08:19:45,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:19:45,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-01-28 08:19:45,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-01-28 08:19:45,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 417 [2023-01-28 08:19:45,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 67 transitions, 334 flow. Second operand has 49 states, 49 states have (on average 202.08163265306123) internal successors, (9902), 49 states have internal predecessors, (9902), 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 08:19:45,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:19:45,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 417 [2023-01-28 08:19:45,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:19:46,196 INFO L130 PetriNetUnfolder]: 1331/2352 cut-off events. [2023-01-28 08:19:46,196 INFO L131 PetriNetUnfolder]: For 5241/5241 co-relation queries the response was YES. [2023-01-28 08:19:46,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4771 conditions, 2352 events. 1331/2352 cut-off events. For 5241/5241 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11222 event pairs, 1250 based on Foata normal form. 24/2028 useless extension candidates. Maximal degree in co-relation 4502. Up to 2152 conditions per place. [2023-01-28 08:19:46,206 INFO L137 encePairwiseOnDemand]: 414/417 looper letters, 38 selfloop transitions, 47 changer transitions 0/91 dead transitions. [2023-01-28 08:19:46,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 91 transitions, 696 flow [2023-01-28 08:19:46,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-01-28 08:19:46,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-01-28 08:19:46,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 9757 transitions. [2023-01-28 08:19:46,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48746003197442045 [2023-01-28 08:19:46,218 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 9757 transitions. [2023-01-28 08:19:46,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 9757 transitions. [2023-01-28 08:19:46,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:19:46,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 9757 transitions. [2023-01-28 08:19:46,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 203.27083333333334) internal successors, (9757), 48 states have internal predecessors, (9757), 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 08:19:46,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 417.0) internal successors, (20433), 49 states have internal predecessors, (20433), 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 08:19:46,247 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 417.0) internal successors, (20433), 49 states have internal predecessors, (20433), 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 08:19:46,248 INFO L175 Difference]: Start difference. First operand has 103 places, 67 transitions, 334 flow. Second operand 48 states and 9757 transitions. [2023-01-28 08:19:46,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 91 transitions, 696 flow [2023-01-28 08:19:46,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 91 transitions, 552 flow, removed 61 selfloop flow, removed 11 redundant places. [2023-01-28 08:19:46,252 INFO L231 Difference]: Finished difference. Result has 163 places, 91 transitions, 574 flow [2023-01-28 08:19:46,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=574, PETRI_PLACES=163, PETRI_TRANSITIONS=91} [2023-01-28 08:19:46,253 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 109 predicate places. [2023-01-28 08:19:46,253 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 91 transitions, 574 flow [2023-01-28 08:19:46,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 202.08163265306123) internal successors, (9902), 49 states have internal predecessors, (9902), 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 08:19:46,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:19:46,255 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 2, 1, 1, 1, 1, 1] [2023-01-28 08:19:46,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 08:19:46,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:19:46,464 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:19:46,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:19:46,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1888940908, now seen corresponding path program 5 times [2023-01-28 08:19:46,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:19:46,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64957005] [2023-01-28 08:19:46,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:19:46,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:19:46,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:19:49,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:19:49,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:19:49,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64957005] [2023-01-28 08:19:49,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64957005] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:19:49,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855477578] [2023-01-28 08:19:49,137 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 08:19:49,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:19:49,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:19:49,138 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:19:49,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process Received shutdown request... [2023-01-28 08:30:13,093 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 08:30:13,093 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 08:30:14,107 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 [2023-01-28 08:30:14,293 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forcibly destroying the process [2023-01-28 08:30:14,320 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 08:30:14,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:30:14,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2023-01-28 08:30:14,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731466710] [2023-01-28 08:30:14,321 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-01-28 08:30:14,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-01-28 08:30:14,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:30:14,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-01-28 08:30:14,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-01-28 08:30:14,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 137 [2023-01-28 08:30:14,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 417 [2023-01-28 08:30:14,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 91 transitions, 574 flow. Second operand has 49 states, 49 states have (on average 202.0408163265306) internal successors, (9900), 49 states have internal predecessors, (9900), 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 08:30:14,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:30:14,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 417 [2023-01-28 08:30:14,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:30:14,346 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-01-28 08:30:14,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 08:30:14,346 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-01-28 08:30:14,346 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-01-28 08:30:14,346 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1] [2023-01-28 08:30:14,347 INFO L307 ceAbstractionStarter]: Result for error location InUseError was TIMEOUT,TIMEOUT (2/2) [2023-01-28 08:30:14,347 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 08:30:14,347 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 08:30:14,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 08:30:14 BasicIcfg [2023-01-28 08:30:14,351 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 08:30:14,352 INFO L158 Benchmark]: Toolchain (without parser) took 878611.72ms. Allocated memory was 354.4MB in the beginning and 625.0MB in the end (delta: 270.5MB). Free memory was 321.9MB in the beginning and 414.3MB in the end (delta: -92.4MB). Peak memory consumption was 179.9MB. Max. memory is 16.0GB. [2023-01-28 08:30:14,352 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 255.9MB. Free memory is still 213.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 08:30:14,352 INFO L158 Benchmark]: CACSL2BoogieTranslator took 526.15ms. Allocated memory is still 354.4MB. Free memory was 321.5MB in the beginning and 285.4MB in the end (delta: 36.2MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. [2023-01-28 08:30:14,352 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.23ms. Allocated memory is still 354.4MB. Free memory was 285.4MB in the beginning and 282.4MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 08:30:14,352 INFO L158 Benchmark]: Boogie Preprocessor took 41.23ms. Allocated memory is still 354.4MB. Free memory was 282.4MB in the beginning and 280.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 08:30:14,353 INFO L158 Benchmark]: RCFGBuilder took 489.85ms. Allocated memory is still 354.4MB. Free memory was 280.0MB in the beginning and 255.6MB in the end (delta: 24.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-01-28 08:30:14,353 INFO L158 Benchmark]: TraceAbstraction took 877484.08ms. Allocated memory was 354.4MB in the beginning and 625.0MB in the end (delta: 270.5MB). Free memory was 254.8MB in the beginning and 414.3MB in the end (delta: -159.6MB). Peak memory consumption was 112.8MB. Max. memory is 16.0GB. [2023-01-28 08:30:14,354 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 255.9MB. Free memory is still 213.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 526.15ms. Allocated memory is still 354.4MB. Free memory was 321.5MB in the beginning and 285.4MB in the end (delta: 36.2MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 66.23ms. Allocated memory is still 354.4MB. Free memory was 285.4MB in the beginning and 282.4MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 41.23ms. Allocated memory is still 354.4MB. Free memory was 282.4MB in the beginning and 280.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 489.85ms. Allocated memory is still 354.4MB. Free memory was 280.0MB in the beginning and 255.6MB in the end (delta: 24.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 877484.08ms. Allocated memory was 354.4MB in the beginning and 625.0MB in the end (delta: 270.5MB). Free memory was 254.8MB in the beginning and 414.3MB in the end (delta: -159.6MB). Peak memory consumption was 112.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.6s, 212 PlacesBefore, 53 PlacesAfterwards, 230 TransitionsBefore, 64 TransitionsAfterwards, 15822 CoEnabledTransitionPairs, 7 FixpointIterations, 44 TrivialSequentialCompositions, 112 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 19 ConcurrentYvCompositions, 7 ChoiceCompositions, 184 TotalNumberOfCompositions, 26149 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13423, independent: 13035, independent conditional: 0, independent unconditional: 13035, dependent: 388, dependent conditional: 0, dependent unconditional: 388, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8005, independent: 7917, independent conditional: 0, independent unconditional: 7917, dependent: 88, dependent conditional: 0, dependent unconditional: 88, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13423, independent: 5118, independent conditional: 0, independent unconditional: 5118, dependent: 300, dependent conditional: 0, dependent unconditional: 300, unknown: 8005, unknown conditional: 0, unknown unconditional: 8005] , Statistics on independence cache: Total cache size (in pairs): 319, Positive cache size: 285, Positive conditional cache size: 0, Positive unconditional cache size: 285, Negative cache size: 34, Negative conditional cache size: 0, Negative unconditional cache size: 34, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.4s, 213 PlacesBefore, 54 PlacesAfterwards, 231 TransitionsBefore, 65 TransitionsAfterwards, 15880 CoEnabledTransitionPairs, 6 FixpointIterations, 44 TrivialSequentialCompositions, 112 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 19 ConcurrentYvCompositions, 7 ChoiceCompositions, 184 TotalNumberOfCompositions, 24357 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13386, independent: 13051, independent conditional: 0, independent unconditional: 13051, dependent: 335, dependent conditional: 0, dependent unconditional: 335, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8126, independent: 8025, independent conditional: 0, independent unconditional: 8025, dependent: 101, dependent conditional: 0, dependent unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13386, independent: 5026, independent conditional: 0, independent unconditional: 5026, dependent: 234, dependent conditional: 0, dependent unconditional: 234, unknown: 8126, unknown conditional: 0, unknown unconditional: 8126] , Statistics on independence cache: Total cache size (in pairs): 426, Positive cache size: 387, Positive conditional cache size: 0, Positive unconditional cache size: 387, Negative cache size: 39, Negative conditional cache size: 0, Negative unconditional cache size: 39, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1050]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1051]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 323 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: 7.6s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 349 IncrementalHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 0 mSDtfsCounter, 349 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=0, InterpolantAutomatonStates: 26, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 142 ConstructedInterpolants, 0 QuantifiedInterpolants, 190 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1067 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 16/41 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 5 procedures, 323 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: 869.8s, OverallIterations: 6, TraceHistogramMax: 46, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 706 IncrementalHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 706 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 217 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=574occurred in iteration=5, InterpolantAutomatonStates: 93, 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: 0.1s SsaConstructionTime, 232.6s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 241 ConstructedInterpolants, 0 QuantifiedInterpolants, 583 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2961 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 14 InterpolantComputations, 1 PerfectInterpolantSequences, 28/2066 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown