/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 02:58:17,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 02:58:17,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 02:58:17,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 02:58:17,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 02:58:17,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 02:58:17,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 02:58:17,319 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 02:58:17,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 02:58:17,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 02:58:17,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 02:58:17,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 02:58:17,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 02:58:17,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 02:58:17,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 02:58:17,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 02:58:17,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 02:58:17,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 02:58:17,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 02:58:17,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 02:58:17,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 02:58:17,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 02:58:17,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 02:58:17,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 02:58:17,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 02:58:17,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 02:58:17,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 02:58:17,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 02:58:17,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 02:58:17,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 02:58:17,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 02:58:17,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 02:58:17,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 02:58:17,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 02:58:17,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 02:58:17,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 02:58:17,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 02:58:17,346 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 02:58:17,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 02:58:17,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 02:58:17,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 02:58:17,348 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 02:58:17,372 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 02:58:17,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 02:58:17,373 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 02:58:17,373 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 02:58:17,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 02:58:17,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 02:58:17,374 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 02:58:17,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 02:58:17,374 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 02:58:17,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 02:58:17,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 02:58:17,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 02:58:17,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 02:58:17,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 02:58:17,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 02:58:17,376 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 02:58:17,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 02:58:17,376 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 02:58:17,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 02:58:17,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 02:58:17,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 02:58:17,376 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 02:58:17,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 02:58:17,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:58:17,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 02:58:17,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 02:58:17,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 02:58:17,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 02:58:17,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 02:58:17,377 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 02:58:17,377 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 02:58:17,377 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 02:58:17,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 02:58:17,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 02:58:17,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 02:58:17,546 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 02:58:17,546 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 02:58:17,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c [2023-01-28 02:58:18,551 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 02:58:18,696 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 02:58:18,696 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c [2023-01-28 02:58:18,716 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00894818d/b10ecd43b7e649fabca6666815b5cee1/FLAG29031a20b [2023-01-28 02:58:18,725 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00894818d/b10ecd43b7e649fabca6666815b5cee1 [2023-01-28 02:58:18,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 02:58:18,728 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 02:58:18,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 02:58:18,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 02:58:18,732 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 02:58:18,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:58:18" (1/1) ... [2023-01-28 02:58:18,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65e120a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:58:18, skipping insertion in model container [2023-01-28 02:58:18,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:58:18" (1/1) ... [2023-01-28 02:58:18,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 02:58:18,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 02:58:18,899 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c[12821,12834] [2023-01-28 02:58:18,905 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:58:18,911 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 02:58:18,985 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c[12821,12834] [2023-01-28 02:58:18,987 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:58:18,992 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 02:58:18,992 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 02:58:18,996 INFO L208 MainTranslator]: Completed translation [2023-01-28 02:58:18,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:58:18 WrapperNode [2023-01-28 02:58:18,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 02:58:18,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 02:58:18,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 02:58:18,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 02:58:19,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:58:18" (1/1) ... [2023-01-28 02:58:19,014 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:58:18" (1/1) ... [2023-01-28 02:58:19,057 INFO L138 Inliner]: procedures = 25, calls = 307, calls flagged for inlining = 69, calls inlined = 97, statements flattened = 1546 [2023-01-28 02:58:19,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 02:58:19,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 02:58:19,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 02:58:19,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 02:58:19,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:58:18" (1/1) ... [2023-01-28 02:58:19,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:58:18" (1/1) ... [2023-01-28 02:58:19,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:58:18" (1/1) ... [2023-01-28 02:58:19,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:58:18" (1/1) ... [2023-01-28 02:58:19,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:58:18" (1/1) ... [2023-01-28 02:58:19,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:58:18" (1/1) ... [2023-01-28 02:58:19,132 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:58:18" (1/1) ... [2023-01-28 02:58:19,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:58:18" (1/1) ... [2023-01-28 02:58:19,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 02:58:19,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 02:58:19,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 02:58:19,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 02:58:19,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:58:18" (1/1) ... [2023-01-28 02:58:19,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:58:19,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:58:19,177 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 02:58:19,183 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 02:58:19,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 02:58:19,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 02:58:19,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 02:58:19,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 02:58:19,208 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 02:58:19,208 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 02:58:19,208 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 02:58:19,208 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 02:58:19,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 02:58:19,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 02:58:19,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 02:58:19,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 02:58:19,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 02:58:19,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 02:58:19,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 02:58:19,211 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 02:58:19,385 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 02:58:19,386 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 02:58:20,500 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 02:58:21,608 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 02:58:21,608 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-01-28 02:58:21,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:58:21 BoogieIcfgContainer [2023-01-28 02:58:21,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 02:58:21,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 02:58:21,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 02:58:21,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 02:58:21,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 02:58:18" (1/3) ... [2023-01-28 02:58:21,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be6c2c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:58:21, skipping insertion in model container [2023-01-28 02:58:21,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:58:18" (2/3) ... [2023-01-28 02:58:21,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be6c2c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:58:21, skipping insertion in model container [2023-01-28 02:58:21,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:58:21" (3/3) ... [2023-01-28 02:58:21,616 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-symm.wvr.c [2023-01-28 02:58:21,628 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 02:58:21,628 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 02:58:21,628 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 02:58:21,826 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 02:58:21,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 409 places, 455 transitions, 926 flow [2023-01-28 02:58:21,998 INFO L130 PetriNetUnfolder]: 53/453 cut-off events. [2023-01-28 02:58:21,998 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 02:58:22,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 453 events. 53/453 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 567 event pairs, 0 based on Foata normal form. 0/399 useless extension candidates. Maximal degree in co-relation 375. Up to 7 conditions per place. [2023-01-28 02:58:22,004 INFO L82 GeneralOperation]: Start removeDead. Operand has 409 places, 455 transitions, 926 flow [2023-01-28 02:58:22,011 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 399 places, 445 transitions, 902 flow [2023-01-28 02:58:22,013 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 02:58:22,024 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 399 places, 445 transitions, 902 flow [2023-01-28 02:58:22,027 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 399 places, 445 transitions, 902 flow [2023-01-28 02:58:22,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 399 places, 445 transitions, 902 flow [2023-01-28 02:58:22,090 INFO L130 PetriNetUnfolder]: 53/445 cut-off events. [2023-01-28 02:58:22,090 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 02:58:22,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 445 events. 53/445 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 567 event pairs, 0 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 375. Up to 7 conditions per place. [2023-01-28 02:58:22,098 INFO L119 LiptonReduction]: Number of co-enabled transitions 7700 [2023-01-28 02:59:08,824 INFO L134 LiptonReduction]: Checked pairs total: 7716 [2023-01-28 02:59:08,824 INFO L136 LiptonReduction]: Total number of compositions: 528 [2023-01-28 02:59:08,834 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 02:59:08,838 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;@7a795727, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 02:59:08,838 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 02:59:08,873 INFO L130 PetriNetUnfolder]: 16/38 cut-off events. [2023-01-28 02:59:08,873 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 02:59:08,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:59:08,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:59:08,874 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:59:08,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:59:08,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1344797690, now seen corresponding path program 1 times [2023-01-28 02:59:08,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:59:08,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404331627] [2023-01-28 02:59:08,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:59:08,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:59:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:59:09,461 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 02:59:09,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:59:09,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404331627] [2023-01-28 02:59:09,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404331627] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:59:09,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:59:09,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:59:09,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169567183] [2023-01-28 02:59:09,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:59:09,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 02:59:09,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:59:09,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 02:59:09,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 02:59:09,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 983 [2023-01-28 02:59:09,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 39 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 317.3333333333333) internal successors, (952), 3 states have internal predecessors, (952), 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 02:59:09,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:59:09,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 983 [2023-01-28 02:59:09,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:59:09,805 INFO L130 PetriNetUnfolder]: 133/196 cut-off events. [2023-01-28 02:59:09,805 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-01-28 02:59:09,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 196 events. 133/196 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 372 event pairs, 45 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 308. Up to 193 conditions per place. [2023-01-28 02:59:09,807 INFO L137 encePairwiseOnDemand]: 974/983 looper letters, 35 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2023-01-28 02:59:09,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 43 transitions, 184 flow [2023-01-28 02:59:09,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 02:59:09,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 02:59:09,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 980 transitions. [2023-01-28 02:59:09,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3323160393353679 [2023-01-28 02:59:09,819 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 980 transitions. [2023-01-28 02:59:09,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 980 transitions. [2023-01-28 02:59:09,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:59:09,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 980 transitions. [2023-01-28 02:59:09,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 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 02:59:09,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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 02:59:09,833 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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 02:59:09,835 INFO L175 Difference]: Start difference. First operand has 30 places, 39 transitions, 90 flow. Second operand 3 states and 980 transitions. [2023-01-28 02:59:09,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 43 transitions, 184 flow [2023-01-28 02:59:09,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 43 transitions, 176 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 02:59:09,838 INFO L231 Difference]: Finished difference. Result has 29 places, 43 transitions, 124 flow [2023-01-28 02:59:09,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=29, PETRI_TRANSITIONS=43} [2023-01-28 02:59:09,841 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2023-01-28 02:59:09,842 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 43 transitions, 124 flow [2023-01-28 02:59:09,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.3333333333333) internal successors, (952), 3 states have internal predecessors, (952), 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 02:59:09,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:59:09,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:59:09,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 02:59:09,843 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:59:09,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:59:09,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1708311211, now seen corresponding path program 1 times [2023-01-28 02:59:09,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:59:09,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940392741] [2023-01-28 02:59:09,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:59:09,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:59:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:59:10,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 02:59:10,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:59:10,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940392741] [2023-01-28 02:59:10,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940392741] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:59:10,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199440064] [2023-01-28 02:59:10,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:59:10,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:59:10,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:59:10,045 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 02:59:10,047 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 02:59:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:59:10,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 02:59:10,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:59:10,733 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 02:59:10,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:59:10,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199440064] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:59:10,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:59:10,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-01-28 02:59:10,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883329714] [2023-01-28 02:59:10,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:59:10,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 02:59:10,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:59:10,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 02:59:10,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 02:59:10,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 983 [2023-01-28 02:59:10,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 43 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 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 02:59:10,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:59:10,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 983 [2023-01-28 02:59:10,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:59:11,137 INFO L130 PetriNetUnfolder]: 133/200 cut-off events. [2023-01-28 02:59:11,137 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 02:59:11,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 200 events. 133/200 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 373 event pairs, 45 based on Foata normal form. 1/117 useless extension candidates. Maximal degree in co-relation 373. Up to 197 conditions per place. [2023-01-28 02:59:11,138 INFO L137 encePairwiseOnDemand]: 973/983 looper letters, 39 selfloop transitions, 8 changer transitions 0/47 dead transitions. [2023-01-28 02:59:11,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 47 transitions, 226 flow [2023-01-28 02:59:11,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 02:59:11,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 02:59:11,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 980 transitions. [2023-01-28 02:59:11,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3323160393353679 [2023-01-28 02:59:11,141 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 980 transitions. [2023-01-28 02:59:11,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 980 transitions. [2023-01-28 02:59:11,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:59:11,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 980 transitions. [2023-01-28 02:59:11,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 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 02:59:11,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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 02:59:11,148 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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 02:59:11,148 INFO L175 Difference]: Start difference. First operand has 29 places, 43 transitions, 124 flow. Second operand 3 states and 980 transitions. [2023-01-28 02:59:11,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 47 transitions, 226 flow [2023-01-28 02:59:11,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 47 transitions, 218 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 02:59:11,150 INFO L231 Difference]: Finished difference. Result has 31 places, 47 transitions, 160 flow [2023-01-28 02:59:11,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=31, PETRI_TRANSITIONS=47} [2023-01-28 02:59:11,150 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2023-01-28 02:59:11,151 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 47 transitions, 160 flow [2023-01-28 02:59:11,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 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 02:59:11,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:59:11,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:59:11,160 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 02:59:11,361 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 02:59:11,361 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:59:11,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:59:11,362 INFO L85 PathProgramCache]: Analyzing trace with hash -457718845, now seen corresponding path program 1 times [2023-01-28 02:59:11,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:59:11,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909385477] [2023-01-28 02:59:11,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:59:11,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:59:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:59:11,572 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 02:59:11,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:59:11,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909385477] [2023-01-28 02:59:11,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909385477] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:59:11,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876970271] [2023-01-28 02:59:11,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:59:11,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:59:11,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:59:11,574 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 02:59:11,582 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 02:59:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:59:12,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-28 02:59:12,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:59:12,077 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 02:59:12,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:59:12,105 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 02:59:12,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876970271] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:59:12,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:59:12,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-01-28 02:59:12,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950999024] [2023-01-28 02:59:12,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:59:12,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 02:59:12,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:59:12,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 02:59:12,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-01-28 02:59:12,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 983 [2023-01-28 02:59:12,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 47 transitions, 160 flow. Second operand has 8 states, 8 states have (on average 315.625) internal successors, (2525), 8 states have internal predecessors, (2525), 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 02:59:12,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:59:12,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 983 [2023-01-28 02:59:12,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:59:12,494 INFO L130 PetriNetUnfolder]: 133/224 cut-off events. [2023-01-28 02:59:12,495 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 02:59:12,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 224 events. 133/224 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 373 event pairs, 45 based on Foata normal form. 12/152 useless extension candidates. Maximal degree in co-relation 393. Up to 193 conditions per place. [2023-01-28 02:59:12,496 INFO L137 encePairwiseOnDemand]: 966/983 looper letters, 31 selfloop transitions, 40 changer transitions 0/71 dead transitions. [2023-01-28 02:59:12,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 71 transitions, 398 flow [2023-01-28 02:59:12,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 02:59:12,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 02:59:12,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2583 transitions. [2023-01-28 02:59:12,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284587995930824 [2023-01-28 02:59:12,502 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2583 transitions. [2023-01-28 02:59:12,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2583 transitions. [2023-01-28 02:59:12,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:59:12,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2583 transitions. [2023-01-28 02:59:12,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 322.875) internal successors, (2583), 8 states have internal predecessors, (2583), 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 02:59:12,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 983.0) internal successors, (8847), 9 states have internal predecessors, (8847), 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 02:59:12,517 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 983.0) internal successors, (8847), 9 states have internal predecessors, (8847), 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 02:59:12,517 INFO L175 Difference]: Start difference. First operand has 31 places, 47 transitions, 160 flow. Second operand 8 states and 2583 transitions. [2023-01-28 02:59:12,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 71 transitions, 398 flow [2023-01-28 02:59:12,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 71 transitions, 390 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 02:59:12,519 INFO L231 Difference]: Finished difference. Result has 40 places, 71 transitions, 390 flow [2023-01-28 02:59:12,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=390, PETRI_PLACES=40, PETRI_TRANSITIONS=71} [2023-01-28 02:59:12,520 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2023-01-28 02:59:12,520 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 71 transitions, 390 flow [2023-01-28 02:59:12,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 315.625) internal successors, (2525), 8 states have internal predecessors, (2525), 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 02:59:12,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:59:12,522 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:59:12,529 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 02:59:12,728 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 02:59:12,729 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:59:12,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:59:12,729 INFO L85 PathProgramCache]: Analyzing trace with hash 141857420, now seen corresponding path program 2 times [2023-01-28 02:59:12,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:59:12,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166365030] [2023-01-28 02:59:12,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:59:12,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:59:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:59:12,993 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-01-28 02:59:12,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:59:12,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166365030] [2023-01-28 02:59:12,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166365030] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:59:12,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729645433] [2023-01-28 02:59:12,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:59:13,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:59:13,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:59:13,001 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 02:59:13,003 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 02:59:13,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 02:59:13,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:59:13,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 02:59:13,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:59:17,631 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:59:17,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 1365 treesize of output 1191 [2023-01-28 02:59:50,010 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-01-28 02:59:50,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:59:50,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729645433] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:59:50,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:59:50,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-01-28 02:59:50,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598275731] [2023-01-28 02:59:50,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:59:50,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:59:50,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:59:50,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:59:50,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:59:50,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 983 [2023-01-28 02:59:50,014 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 71 transitions, 390 flow. Second operand has 4 states, 4 states have (on average 376.75) internal successors, (1507), 4 states have internal predecessors, (1507), 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 02:59:50,014 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:59:50,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 983 [2023-01-28 02:59:50,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:59:50,694 INFO L130 PetriNetUnfolder]: 220/356 cut-off events. [2023-01-28 02:59:50,694 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-01-28 02:59:50,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 850 conditions, 356 events. 220/356 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 889 event pairs, 29 based on Foata normal form. 1/220 useless extension candidates. Maximal degree in co-relation 678. Up to 211 conditions per place. [2023-01-28 02:59:50,695 INFO L137 encePairwiseOnDemand]: 968/983 looper letters, 85 selfloop transitions, 13 changer transitions 6/104 dead transitions. [2023-01-28 02:59:50,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 104 transitions, 670 flow [2023-01-28 02:59:50,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 02:59:50,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 02:59:50,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1925 transitions. [2023-01-28 02:59:50,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3916581892166836 [2023-01-28 02:59:50,699 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1925 transitions. [2023-01-28 02:59:50,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1925 transitions. [2023-01-28 02:59:50,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:59:50,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1925 transitions. [2023-01-28 02:59:50,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 385.0) internal successors, (1925), 5 states have internal predecessors, (1925), 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 02:59:50,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 983.0) internal successors, (5898), 6 states have internal predecessors, (5898), 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 02:59:50,710 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 983.0) internal successors, (5898), 6 states have internal predecessors, (5898), 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 02:59:50,710 INFO L175 Difference]: Start difference. First operand has 40 places, 71 transitions, 390 flow. Second operand 5 states and 1925 transitions. [2023-01-28 02:59:50,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 104 transitions, 670 flow [2023-01-28 02:59:50,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 104 transitions, 588 flow, removed 29 selfloop flow, removed 3 redundant places. [2023-01-28 02:59:50,713 INFO L231 Difference]: Finished difference. Result has 44 places, 82 transitions, 398 flow [2023-01-28 02:59:50,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=398, PETRI_PLACES=44, PETRI_TRANSITIONS=82} [2023-01-28 02:59:50,714 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2023-01-28 02:59:50,714 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 82 transitions, 398 flow [2023-01-28 02:59:50,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 376.75) internal successors, (1507), 4 states have internal predecessors, (1507), 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 02:59:50,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:59:50,715 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:59:50,728 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 02:59:50,926 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 02:59:50,926 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:59:50,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:59:50,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1414425790, now seen corresponding path program 3 times [2023-01-28 02:59:50,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:59:50,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387561689] [2023-01-28 02:59:50,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:59:50,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:59:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:59:51,252 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-01-28 02:59:51,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:59:51,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387561689] [2023-01-28 02:59:51,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387561689] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:59:51,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829562415] [2023-01-28 02:59:51,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 02:59:51,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:59:51,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:59:51,255 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 02:59:51,258 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 02:59:51,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-28 02:59:51,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:59:51,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 02:59:51,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:59:55,053 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:59:55,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 1350 treesize of output 1176 [2023-01-28 03:01:50,655 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-01-28 03:01:50,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 03:01:50,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829562415] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:01:50,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 03:01:50,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-01-28 03:01:50,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633942386] [2023-01-28 03:01:50,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:01:50,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 03:01:50,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:01:50,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 03:01:50,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-01-28 03:01:50,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 983 [2023-01-28 03:01:50,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 82 transitions, 398 flow. Second operand has 4 states, 4 states have (on average 376.75) internal successors, (1507), 4 states have internal predecessors, (1507), 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 03:01:50,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:01:50,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 983 [2023-01-28 03:01:50,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:01:51,336 INFO L130 PetriNetUnfolder]: 222/370 cut-off events. [2023-01-28 03:01:51,336 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2023-01-28 03:01:51,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1148 conditions, 370 events. 222/370 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 954 event pairs, 31 based on Foata normal form. 3/259 useless extension candidates. Maximal degree in co-relation 1128. Up to 242 conditions per place. [2023-01-28 03:01:51,338 INFO L137 encePairwiseOnDemand]: 969/983 looper letters, 86 selfloop transitions, 12 changer transitions 5/103 dead transitions. [2023-01-28 03:01:51,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 103 transitions, 670 flow [2023-01-28 03:01:51,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:01:51,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:01:51,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1923 transitions. [2023-01-28 03:01:51,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39125127161749745 [2023-01-28 03:01:51,346 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1923 transitions. [2023-01-28 03:01:51,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1923 transitions. [2023-01-28 03:01:51,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:01:51,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1923 transitions. [2023-01-28 03:01:51,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 384.6) internal successors, (1923), 5 states have internal predecessors, (1923), 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 03:01:51,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 983.0) internal successors, (5898), 6 states have internal predecessors, (5898), 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 03:01:51,354 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 983.0) internal successors, (5898), 6 states have internal predecessors, (5898), 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 03:01:51,355 INFO L175 Difference]: Start difference. First operand has 44 places, 82 transitions, 398 flow. Second operand 5 states and 1923 transitions. [2023-01-28 03:01:51,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 103 transitions, 670 flow [2023-01-28 03:01:51,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 103 transitions, 666 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-28 03:01:51,357 INFO L231 Difference]: Finished difference. Result has 48 places, 82 transitions, 430 flow [2023-01-28 03:01:51,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=430, PETRI_PLACES=48, PETRI_TRANSITIONS=82} [2023-01-28 03:01:51,358 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 18 predicate places. [2023-01-28 03:01:51,358 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 82 transitions, 430 flow [2023-01-28 03:01:51,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 376.75) internal successors, (1507), 4 states have internal predecessors, (1507), 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 03:01:51,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:01:51,359 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:01:51,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 03:01:51,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:01:51,567 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:01:51,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:01:51,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1787475852, now seen corresponding path program 4 times [2023-01-28 03:01:51,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:01:51,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877113102] [2023-01-28 03:01:51,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:01:51,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:01:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:01:51,824 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-01-28 03:01:51,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:01:51,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877113102] [2023-01-28 03:01:51,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877113102] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:01:51,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261363653] [2023-01-28 03:01:51,824 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:01:51,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:01:51,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:01:51,826 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 03:01:51,827 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 03:01:52,366 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:01:52,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:01:52,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 03:01:52,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:01:52,415 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-01-28 03:01:52,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:01:52,437 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-01-28 03:01:52,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261363653] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:01:52,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:01:52,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-01-28 03:01:52,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251864891] [2023-01-28 03:01:52,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:01:52,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 03:01:52,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:01:52,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 03:01:52,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2023-01-28 03:01:52,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 983 [2023-01-28 03:01:52,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 82 transitions, 430 flow. Second operand has 12 states, 12 states have (on average 314.0) internal successors, (3768), 12 states have internal predecessors, (3768), 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 03:01:52,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:01:52,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 983 [2023-01-28 03:01:52,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:01:52,905 INFO L130 PetriNetUnfolder]: 221/368 cut-off events. [2023-01-28 03:01:52,905 INFO L131 PetriNetUnfolder]: For 246/246 co-relation queries the response was YES. [2023-01-28 03:01:52,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1265 conditions, 368 events. 221/368 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 912 event pairs, 69 based on Foata normal form. 1/255 useless extension candidates. Maximal degree in co-relation 1243. Up to 333 conditions per place. [2023-01-28 03:01:52,908 INFO L137 encePairwiseOnDemand]: 966/983 looper letters, 42 selfloop transitions, 44 changer transitions 0/86 dead transitions. [2023-01-28 03:01:52,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 86 transitions, 626 flow [2023-01-28 03:01:52,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 03:01:52,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 03:01:52,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3500 transitions. [2023-01-28 03:01:52,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32368445389808564 [2023-01-28 03:01:52,915 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3500 transitions. [2023-01-28 03:01:52,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3500 transitions. [2023-01-28 03:01:52,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:01:52,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3500 transitions. [2023-01-28 03:01:52,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 318.1818181818182) internal successors, (3500), 11 states have internal predecessors, (3500), 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 03:01:52,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 983.0) internal successors, (11796), 12 states have internal predecessors, (11796), 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 03:01:52,944 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 983.0) internal successors, (11796), 12 states have internal predecessors, (11796), 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 03:01:52,944 INFO L175 Difference]: Start difference. First operand has 48 places, 82 transitions, 430 flow. Second operand 11 states and 3500 transitions. [2023-01-28 03:01:52,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 86 transitions, 626 flow [2023-01-28 03:01:52,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 86 transitions, 613 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 03:01:52,947 INFO L231 Difference]: Finished difference. Result has 56 places, 86 transitions, 547 flow [2023-01-28 03:01:52,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=547, PETRI_PLACES=56, PETRI_TRANSITIONS=86} [2023-01-28 03:01:52,949 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2023-01-28 03:01:52,949 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 86 transitions, 547 flow [2023-01-28 03:01:52,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 314.0) internal successors, (3768), 12 states have internal predecessors, (3768), 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 03:01:52,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:01:52,950 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:01:52,961 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 03:01:53,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:01:53,159 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:01:53,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:01:53,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1712025184, now seen corresponding path program 5 times [2023-01-28 03:01:53,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:01:53,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999739549] [2023-01-28 03:01:53,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:01:53,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:01:53,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:01:53,419 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-01-28 03:01:53,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:01:53,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999739549] [2023-01-28 03:01:53,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999739549] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:01:53,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327469325] [2023-01-28 03:01:53,420 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 03:01:53,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:01:53,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:01:53,421 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 03:01:53,423 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 03:04:50,037 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-28 03:04:50,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:04:50,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 03:04:50,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:04:50,122 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-01-28 03:04:50,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:04:50,169 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-01-28 03:04:50,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327469325] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:04:50,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:04:50,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-01-28 03:04:50,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174959010] [2023-01-28 03:04:50,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:04:50,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 03:04:50,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:04:50,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 03:04:50,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=200, Unknown=0, NotChecked=0, Total=380 [2023-01-28 03:04:50,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 983 [2023-01-28 03:04:50,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 86 transitions, 547 flow. Second operand has 20 states, 20 states have (on average 313.25) internal successors, (6265), 20 states have internal predecessors, (6265), 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 03:04:50,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:04:50,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 983 [2023-01-28 03:04:50,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:04:50,640 INFO L130 PetriNetUnfolder]: 221/382 cut-off events. [2023-01-28 03:04:50,640 INFO L131 PetriNetUnfolder]: For 193/193 co-relation queries the response was YES. [2023-01-28 03:04:50,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1385 conditions, 382 events. 221/382 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 901 event pairs, 69 based on Foata normal form. 14/288 useless extension candidates. Maximal degree in co-relation 1099. Up to 333 conditions per place. [2023-01-28 03:04:50,642 INFO L137 encePairwiseOnDemand]: 966/983 looper letters, 42 selfloop transitions, 58 changer transitions 0/100 dead transitions. [2023-01-28 03:04:50,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 100 transitions, 859 flow [2023-01-28 03:04:50,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 03:04:50,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 03:04:50,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4457 transitions. [2023-01-28 03:04:50,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386281063798866 [2023-01-28 03:04:50,649 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4457 transitions. [2023-01-28 03:04:50,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4457 transitions. [2023-01-28 03:04:50,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:04:50,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4457 transitions. [2023-01-28 03:04:50,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 318.35714285714283) internal successors, (4457), 14 states have internal predecessors, (4457), 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 03:04:50,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 983.0) internal successors, (14745), 15 states have internal predecessors, (14745), 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 03:04:50,667 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 983.0) internal successors, (14745), 15 states have internal predecessors, (14745), 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 03:04:50,668 INFO L175 Difference]: Start difference. First operand has 56 places, 86 transitions, 547 flow. Second operand 14 states and 4457 transitions. [2023-01-28 03:04:50,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 100 transitions, 859 flow [2023-01-28 03:04:50,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 100 transitions, 779 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-01-28 03:04:50,671 INFO L231 Difference]: Finished difference. Result has 70 places, 100 transitions, 793 flow [2023-01-28 03:04:50,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=793, PETRI_PLACES=70, PETRI_TRANSITIONS=100} [2023-01-28 03:04:50,671 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2023-01-28 03:04:50,671 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 100 transitions, 793 flow [2023-01-28 03:04:50,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 313.25) internal successors, (6265), 20 states have internal predecessors, (6265), 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 03:04:50,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:04:50,673 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:04:50,703 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 03:04:50,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:04:50,889 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:04:50,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:04:50,889 INFO L85 PathProgramCache]: Analyzing trace with hash -595377332, now seen corresponding path program 6 times [2023-01-28 03:04:50,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:04:50,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877150805] [2023-01-28 03:04:50,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:04:50,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:04:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:04:51,331 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-01-28 03:04:51,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:04:51,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877150805] [2023-01-28 03:04:51,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877150805] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:04:51,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787859009] [2023-01-28 03:04:51,332 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 03:04:51,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:04:51,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:04:51,333 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 03:04:51,333 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 03:04:51,867 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-01-28 03:04:51,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:04:51,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 21 conjunts are in the unsatisfiable core [2023-01-28 03:04:51,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:04:54,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:04:54,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:04:54,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:04:54,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:04:54,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:04:54,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:04:54,873 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-01-28 03:04:54,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 446 treesize of output 395 [2023-01-28 03:04:57,209 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:04:57,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 1365 treesize of output 1191 [2023-01-28 03:05:23,960 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-01-28 03:05:23,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 03:05:23,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787859009] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:05:23,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 03:05:23,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 25 [2023-01-28 03:05:23,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258412132] [2023-01-28 03:05:23,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:05:23,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 03:05:23,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:05:23,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 03:05:23,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2023-01-28 03:05:23,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 983 [2023-01-28 03:05:23,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 100 transitions, 793 flow. Second operand has 12 states, 12 states have (on average 334.25) internal successors, (4011), 12 states have internal predecessors, (4011), 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 03:05:23,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:05:23,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 983 [2023-01-28 03:05:23,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:05:25,049 INFO L130 PetriNetUnfolder]: 223/394 cut-off events. [2023-01-28 03:05:25,049 INFO L131 PetriNetUnfolder]: For 238/238 co-relation queries the response was YES. [2023-01-28 03:05:25,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1497 conditions, 394 events. 223/394 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1037 event pairs, 26 based on Foata normal form. 5/291 useless extension candidates. Maximal degree in co-relation 1158. Up to 225 conditions per place. [2023-01-28 03:05:25,051 INFO L137 encePairwiseOnDemand]: 969/983 looper letters, 103 selfloop transitions, 12 changer transitions 7/122 dead transitions. [2023-01-28 03:05:25,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 122 transitions, 1112 flow [2023-01-28 03:05:25,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 03:05:25,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 03:05:25,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2067 transitions. [2023-01-28 03:05:25,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3504577822990844 [2023-01-28 03:05:25,055 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2067 transitions. [2023-01-28 03:05:25,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2067 transitions. [2023-01-28 03:05:25,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:05:25,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2067 transitions. [2023-01-28 03:05:25,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 344.5) internal successors, (2067), 6 states have internal predecessors, (2067), 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 03:05:25,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 983.0) internal successors, (6881), 7 states have internal predecessors, (6881), 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 03:05:25,063 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 983.0) internal successors, (6881), 7 states have internal predecessors, (6881), 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 03:05:25,063 INFO L175 Difference]: Start difference. First operand has 70 places, 100 transitions, 793 flow. Second operand 6 states and 2067 transitions. [2023-01-28 03:05:25,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 122 transitions, 1112 flow [2023-01-28 03:05:25,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 122 transitions, 1040 flow, removed 28 selfloop flow, removed 1 redundant places. [2023-01-28 03:05:25,067 INFO L231 Difference]: Finished difference. Result has 76 places, 99 transitions, 750 flow [2023-01-28 03:05:25,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=750, PETRI_PLACES=76, PETRI_TRANSITIONS=99} [2023-01-28 03:05:25,068 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2023-01-28 03:05:25,068 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 99 transitions, 750 flow [2023-01-28 03:05:25,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 334.25) internal successors, (4011), 12 states have internal predecessors, (4011), 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 03:05:25,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:05:25,069 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:05:25,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-01-28 03:05:25,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:05:25,277 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:05:25,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:05:25,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1455469097, now seen corresponding path program 1 times [2023-01-28 03:05:25,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:05:25,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884572634] [2023-01-28 03:05:25,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:05:25,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:05:25,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:05:25,662 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-01-28 03:05:25,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:05:25,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884572634] [2023-01-28 03:05:25,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884572634] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:05:25,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:05:25,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 03:05:25,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678844003] [2023-01-28 03:05:25,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:05:25,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 03:05:25,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:05:25,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 03:05:25,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 03:05:25,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 381 out of 983 [2023-01-28 03:05:25,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 99 transitions, 750 flow. Second operand has 3 states, 3 states have (on average 390.3333333333333) internal successors, (1171), 3 states have internal predecessors, (1171), 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 03:05:25,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:05:25,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 381 of 983 [2023-01-28 03:05:25,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:05:26,078 INFO L130 PetriNetUnfolder]: 249/438 cut-off events. [2023-01-28 03:05:26,078 INFO L131 PetriNetUnfolder]: For 535/535 co-relation queries the response was YES. [2023-01-28 03:05:26,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1735 conditions, 438 events. 249/438 cut-off events. For 535/535 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1190 event pairs, 46 based on Foata normal form. 14/330 useless extension candidates. Maximal degree in co-relation 1699. Up to 275 conditions per place. [2023-01-28 03:05:26,081 INFO L137 encePairwiseOnDemand]: 976/983 looper letters, 117 selfloop transitions, 3 changer transitions 0/120 dead transitions. [2023-01-28 03:05:26,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 120 transitions, 1093 flow [2023-01-28 03:05:26,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 03:05:26,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 03:05:26,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1201 transitions. [2023-01-28 03:05:26,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4072566971854866 [2023-01-28 03:05:26,084 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1201 transitions. [2023-01-28 03:05:26,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1201 transitions. [2023-01-28 03:05:26,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:05:26,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1201 transitions. [2023-01-28 03:05:26,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 400.3333333333333) internal successors, (1201), 3 states have internal predecessors, (1201), 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 03:05:26,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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 03:05:26,090 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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 03:05:26,090 INFO L175 Difference]: Start difference. First operand has 76 places, 99 transitions, 750 flow. Second operand 3 states and 1201 transitions. [2023-01-28 03:05:26,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 120 transitions, 1093 flow [2023-01-28 03:05:26,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 120 transitions, 1044 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-01-28 03:05:26,096 INFO L231 Difference]: Finished difference. Result has 74 places, 102 transitions, 759 flow [2023-01-28 03:05:26,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=759, PETRI_PLACES=74, PETRI_TRANSITIONS=102} [2023-01-28 03:05:26,097 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2023-01-28 03:05:26,097 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 102 transitions, 759 flow [2023-01-28 03:05:26,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 390.3333333333333) internal successors, (1171), 3 states have internal predecessors, (1171), 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 03:05:26,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:05:26,097 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:05:26,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 03:05:26,098 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:05:26,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:05:26,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1325857365, now seen corresponding path program 1 times [2023-01-28 03:05:26,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:05:26,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151479316] [2023-01-28 03:05:26,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:05:26,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:05:26,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:05:26,505 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-01-28 03:05:26,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:05:26,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151479316] [2023-01-28 03:05:26,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151479316] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:05:26,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685126772] [2023-01-28 03:05:26,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:05:26,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:05:26,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:05:26,507 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 03:05:26,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 03:05:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:05:27,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 16 conjunts are in the unsatisfiable core [2023-01-28 03:05:27,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:05:27,209 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-01-28 03:05:27,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:05:27,292 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-01-28 03:05:27,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685126772] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:05:27,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:05:27,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2023-01-28 03:05:27,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956973719] [2023-01-28 03:05:27,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:05:27,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-28 03:05:27,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:05:27,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-28 03:05:27,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=484, Unknown=0, NotChecked=0, Total=812 [2023-01-28 03:05:27,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 983 [2023-01-28 03:05:27,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 102 transitions, 759 flow. Second operand has 29 states, 29 states have (on average 312.8965517241379) internal successors, (9074), 29 states have internal predecessors, (9074), 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 03:05:27,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:05:27,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 983 [2023-01-28 03:05:27,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:05:27,825 INFO L130 PetriNetUnfolder]: 249/440 cut-off events. [2023-01-28 03:05:27,826 INFO L131 PetriNetUnfolder]: For 590/590 co-relation queries the response was YES. [2023-01-28 03:05:27,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1740 conditions, 440 events. 249/440 cut-off events. For 590/590 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1150 event pairs, 81 based on Foata normal form. 2/344 useless extension candidates. Maximal degree in co-relation 1370. Up to 389 conditions per place. [2023-01-28 03:05:27,828 INFO L137 encePairwiseOnDemand]: 966/983 looper letters, 44 selfloop transitions, 60 changer transitions 0/104 dead transitions. [2023-01-28 03:05:27,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 104 transitions, 987 flow [2023-01-28 03:05:27,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-01-28 03:05:27,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-01-28 03:05:27,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 6313 transitions. [2023-01-28 03:05:27,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3211088504577823 [2023-01-28 03:05:27,836 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 6313 transitions. [2023-01-28 03:05:27,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 6313 transitions. [2023-01-28 03:05:27,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:05:27,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 6313 transitions. [2023-01-28 03:05:27,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 315.65) internal successors, (6313), 20 states have internal predecessors, (6313), 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 03:05:27,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 983.0) internal successors, (20643), 21 states have internal predecessors, (20643), 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 03:05:27,854 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 983.0) internal successors, (20643), 21 states have internal predecessors, (20643), 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 03:05:27,854 INFO L175 Difference]: Start difference. First operand has 74 places, 102 transitions, 759 flow. Second operand 20 states and 6313 transitions. [2023-01-28 03:05:27,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 104 transitions, 987 flow [2023-01-28 03:05:27,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 104 transitions, 975 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-01-28 03:05:27,858 INFO L231 Difference]: Finished difference. Result has 92 places, 104 transitions, 897 flow [2023-01-28 03:05:27,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=897, PETRI_PLACES=92, PETRI_TRANSITIONS=104} [2023-01-28 03:05:27,859 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2023-01-28 03:05:27,859 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 104 transitions, 897 flow [2023-01-28 03:05:27,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 312.8965517241379) internal successors, (9074), 29 states have internal predecessors, (9074), 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 03:05:27,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:05:27,860 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:05:27,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-01-28 03:05:28,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-01-28 03:05:28,071 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:05:28,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:05:28,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1454465938, now seen corresponding path program 1 times [2023-01-28 03:05:28,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:05:28,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109078774] [2023-01-28 03:05:28,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:05:28,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:05:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:05:28,299 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-01-28 03:05:28,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:05:28,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109078774] [2023-01-28 03:05:28,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109078774] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:05:28,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:05:28,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 03:05:28,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378952933] [2023-01-28 03:05:28,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:05:28,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 03:05:28,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:05:28,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 03:05:28,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 03:05:28,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 397 out of 983 [2023-01-28 03:05:28,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 104 transitions, 897 flow. Second operand has 3 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 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 03:05:28,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:05:28,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 397 of 983 [2023-01-28 03:05:28,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:05:28,745 INFO L130 PetriNetUnfolder]: 276/508 cut-off events. [2023-01-28 03:05:28,745 INFO L131 PetriNetUnfolder]: For 441/441 co-relation queries the response was YES. [2023-01-28 03:05:28,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1941 conditions, 508 events. 276/508 cut-off events. For 441/441 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1574 event pairs, 88 based on Foata normal form. 0/378 useless extension candidates. Maximal degree in co-relation 1513. Up to 386 conditions per place. [2023-01-28 03:05:28,748 INFO L137 encePairwiseOnDemand]: 980/983 looper letters, 115 selfloop transitions, 3 changer transitions 0/118 dead transitions. [2023-01-28 03:05:28,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 118 transitions, 1191 flow [2023-01-28 03:05:28,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 03:05:28,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 03:05:28,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1246 transitions. [2023-01-28 03:05:28,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4225161071549678 [2023-01-28 03:05:28,750 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1246 transitions. [2023-01-28 03:05:28,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1246 transitions. [2023-01-28 03:05:28,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:05:28,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1246 transitions. [2023-01-28 03:05:28,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 415.3333333333333) internal successors, (1246), 3 states have internal predecessors, (1246), 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 03:05:28,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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 03:05:28,754 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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 03:05:28,754 INFO L175 Difference]: Start difference. First operand has 92 places, 104 transitions, 897 flow. Second operand 3 states and 1246 transitions. [2023-01-28 03:05:28,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 118 transitions, 1191 flow [2023-01-28 03:05:28,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 118 transitions, 1039 flow, removed 22 selfloop flow, removed 13 redundant places. [2023-01-28 03:05:28,758 INFO L231 Difference]: Finished difference. Result has 82 places, 104 transitions, 756 flow [2023-01-28 03:05:28,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=756, PETRI_PLACES=82, PETRI_TRANSITIONS=104} [2023-01-28 03:05:28,759 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2023-01-28 03:05:28,760 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 104 transitions, 756 flow [2023-01-28 03:05:28,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 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 03:05:28,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:05:28,761 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:05:28,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 03:05:28,761 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:05:28,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:05:28,761 INFO L85 PathProgramCache]: Analyzing trace with hash 779212570, now seen corresponding path program 1 times [2023-01-28 03:05:28,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:05:28,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094524970] [2023-01-28 03:05:28,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:05:28,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:05:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:05:28,982 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-01-28 03:05:28,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:05:28,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094524970] [2023-01-28 03:05:28,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094524970] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:05:28,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:05:28,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 03:05:28,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249556421] [2023-01-28 03:05:28,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:05:28,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 03:05:28,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:05:28,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 03:05:28,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 03:05:28,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 397 out of 983 [2023-01-28 03:05:28,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 104 transitions, 756 flow. Second operand has 3 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 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 03:05:28,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:05:28,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 397 of 983 [2023-01-28 03:05:28,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:05:29,439 INFO L130 PetriNetUnfolder]: 281/525 cut-off events. [2023-01-28 03:05:29,439 INFO L131 PetriNetUnfolder]: For 513/513 co-relation queries the response was YES. [2023-01-28 03:05:29,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1951 conditions, 525 events. 281/525 cut-off events. For 513/513 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1693 event pairs, 96 based on Foata normal form. 0/402 useless extension candidates. Maximal degree in co-relation 1626. Up to 358 conditions per place. [2023-01-28 03:05:29,442 INFO L137 encePairwiseOnDemand]: 980/983 looper letters, 116 selfloop transitions, 3 changer transitions 0/119 dead transitions. [2023-01-28 03:05:29,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 119 transitions, 1054 flow [2023-01-28 03:05:29,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 03:05:29,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 03:05:29,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1246 transitions. [2023-01-28 03:05:29,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4225161071549678 [2023-01-28 03:05:29,444 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1246 transitions. [2023-01-28 03:05:29,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1246 transitions. [2023-01-28 03:05:29,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:05:29,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1246 transitions. [2023-01-28 03:05:29,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 415.3333333333333) internal successors, (1246), 3 states have internal predecessors, (1246), 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 03:05:29,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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 03:05:29,448 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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 03:05:29,448 INFO L175 Difference]: Start difference. First operand has 82 places, 104 transitions, 756 flow. Second operand 3 states and 1246 transitions. [2023-01-28 03:05:29,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 119 transitions, 1054 flow [2023-01-28 03:05:29,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 119 transitions, 1051 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 03:05:29,451 INFO L231 Difference]: Finished difference. Result has 84 places, 104 transitions, 764 flow [2023-01-28 03:05:29,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=764, PETRI_PLACES=84, PETRI_TRANSITIONS=104} [2023-01-28 03:05:29,453 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 54 predicate places. [2023-01-28 03:05:29,453 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 104 transitions, 764 flow [2023-01-28 03:05:29,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 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 03:05:29,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:05:29,453 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:05:29,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 03:05:29,454 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:05:29,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:05:29,454 INFO L85 PathProgramCache]: Analyzing trace with hash -750295871, now seen corresponding path program 2 times [2023-01-28 03:05:29,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:05:29,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033372947] [2023-01-28 03:05:29,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:05:29,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:05:29,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:05:29,676 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-01-28 03:05:29,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:05:29,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033372947] [2023-01-28 03:05:29,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033372947] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:05:29,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:05:29,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 03:05:29,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993223688] [2023-01-28 03:05:29,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:05:29,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 03:05:29,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:05:29,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 03:05:29,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 03:05:29,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 397 out of 983 [2023-01-28 03:05:29,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 104 transitions, 764 flow. Second operand has 3 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 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 03:05:29,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:05:29,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 397 of 983 [2023-01-28 03:05:29,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:05:30,168 INFO L130 PetriNetUnfolder]: 303/579 cut-off events. [2023-01-28 03:05:30,168 INFO L131 PetriNetUnfolder]: For 625/625 co-relation queries the response was YES. [2023-01-28 03:05:30,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2167 conditions, 579 events. 303/579 cut-off events. For 625/625 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2020 event pairs, 100 based on Foata normal form. 0/456 useless extension candidates. Maximal degree in co-relation 1840. Up to 395 conditions per place. [2023-01-28 03:05:30,171 INFO L137 encePairwiseOnDemand]: 980/983 looper letters, 114 selfloop transitions, 3 changer transitions 0/117 dead transitions. [2023-01-28 03:05:30,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 117 transitions, 1057 flow [2023-01-28 03:05:30,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 03:05:30,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 03:05:30,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1244 transitions. [2023-01-28 03:05:30,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4218379111563242 [2023-01-28 03:05:30,173 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1244 transitions. [2023-01-28 03:05:30,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1244 transitions. [2023-01-28 03:05:30,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:05:30,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1244 transitions. [2023-01-28 03:05:30,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 414.6666666666667) internal successors, (1244), 3 states have internal predecessors, (1244), 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 03:05:30,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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 03:05:30,177 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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 03:05:30,177 INFO L175 Difference]: Start difference. First operand has 84 places, 104 transitions, 764 flow. Second operand 3 states and 1244 transitions. [2023-01-28 03:05:30,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 117 transitions, 1057 flow [2023-01-28 03:05:30,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 117 transitions, 1053 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 03:05:30,181 INFO L231 Difference]: Finished difference. Result has 86 places, 104 transitions, 772 flow [2023-01-28 03:05:30,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=772, PETRI_PLACES=86, PETRI_TRANSITIONS=104} [2023-01-28 03:05:30,181 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2023-01-28 03:05:30,181 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 104 transitions, 772 flow [2023-01-28 03:05:30,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 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 03:05:30,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:05:30,182 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:05:30,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 03:05:30,182 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:05:30,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:05:30,182 INFO L85 PathProgramCache]: Analyzing trace with hash -52120250, now seen corresponding path program 1 times [2023-01-28 03:05:30,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:05:30,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483754654] [2023-01-28 03:05:30,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:05:30,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:05:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:05:33,137 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-01-28 03:05:33,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:05:33,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483754654] [2023-01-28 03:05:33,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483754654] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:05:33,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:05:33,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 03:05:33,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611164333] [2023-01-28 03:05:33,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:05:33,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 03:05:33,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:05:33,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 03:05:33,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-01-28 03:05:33,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 983 [2023-01-28 03:05:33,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 104 transitions, 772 flow. Second operand has 11 states, 11 states have (on average 337.6363636363636) internal successors, (3714), 11 states have internal predecessors, (3714), 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 03:05:33,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:05:33,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 983 [2023-01-28 03:05:33,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:05:33,690 INFO L130 PetriNetUnfolder]: 277/529 cut-off events. [2023-01-28 03:05:33,690 INFO L131 PetriNetUnfolder]: For 595/595 co-relation queries the response was YES. [2023-01-28 03:05:33,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2064 conditions, 529 events. 277/529 cut-off events. For 595/595 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1737 event pairs, 76 based on Foata normal form. 14/426 useless extension candidates. Maximal degree in co-relation 1735. Up to 298 conditions per place. [2023-01-28 03:05:33,693 INFO L137 encePairwiseOnDemand]: 978/983 looper letters, 118 selfloop transitions, 3 changer transitions 1/122 dead transitions. [2023-01-28 03:05:33,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 122 transitions, 1097 flow [2023-01-28 03:05:33,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 03:05:33,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 03:05:33,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1396 transitions. [2023-01-28 03:05:33,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3550356052899288 [2023-01-28 03:05:33,696 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1396 transitions. [2023-01-28 03:05:33,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1396 transitions. [2023-01-28 03:05:33,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:05:33,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1396 transitions. [2023-01-28 03:05:33,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 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 03:05:33,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 983.0) internal successors, (4915), 5 states have internal predecessors, (4915), 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 03:05:33,702 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 983.0) internal successors, (4915), 5 states have internal predecessors, (4915), 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 03:05:33,702 INFO L175 Difference]: Start difference. First operand has 86 places, 104 transitions, 772 flow. Second operand 4 states and 1396 transitions. [2023-01-28 03:05:33,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 122 transitions, 1097 flow [2023-01-28 03:05:33,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 122 transitions, 1094 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 03:05:33,707 INFO L231 Difference]: Finished difference. Result has 90 places, 104 transitions, 780 flow [2023-01-28 03:05:33,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=780, PETRI_PLACES=90, PETRI_TRANSITIONS=104} [2023-01-28 03:05:33,708 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2023-01-28 03:05:33,708 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 104 transitions, 780 flow [2023-01-28 03:05:33,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 337.6363636363636) internal successors, (3714), 11 states have internal predecessors, (3714), 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 03:05:33,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:05:33,708 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:05:33,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 03:05:33,708 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:05:33,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:05:33,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1918064962, now seen corresponding path program 1 times [2023-01-28 03:05:33,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:05:33,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145992759] [2023-01-28 03:05:33,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:05:33,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:05:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:05:34,591 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-01-28 03:05:34,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:05:34,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145992759] [2023-01-28 03:05:34,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145992759] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:05:34,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:05:34,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 03:05:34,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960488239] [2023-01-28 03:05:34,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:05:34,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 03:05:34,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:05:34,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 03:05:34,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 03:05:34,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 983 [2023-01-28 03:05:34,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 104 transitions, 780 flow. Second operand has 7 states, 7 states have (on average 347.14285714285717) internal successors, (2430), 7 states have internal predecessors, (2430), 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 03:05:34,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:05:34,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 983 [2023-01-28 03:05:34,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:05:34,923 INFO L130 PetriNetUnfolder]: 223/433 cut-off events. [2023-01-28 03:05:34,923 INFO L131 PetriNetUnfolder]: For 696/696 co-relation queries the response was YES. [2023-01-28 03:05:34,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1704 conditions, 433 events. 223/433 cut-off events. For 696/696 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1299 event pairs, 62 based on Foata normal form. 16/376 useless extension candidates. Maximal degree in co-relation 1372. Up to 246 conditions per place. [2023-01-28 03:05:34,926 INFO L137 encePairwiseOnDemand]: 978/983 looper letters, 114 selfloop transitions, 3 changer transitions 1/118 dead transitions. [2023-01-28 03:05:34,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 118 transitions, 1076 flow [2023-01-28 03:05:34,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 03:05:34,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 03:05:34,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1425 transitions. [2023-01-28 03:05:34,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.362410986775178 [2023-01-28 03:05:34,928 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1425 transitions. [2023-01-28 03:05:34,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1425 transitions. [2023-01-28 03:05:34,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:05:34,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1425 transitions. [2023-01-28 03:05:34,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 356.25) internal successors, (1425), 4 states have internal predecessors, (1425), 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 03:05:34,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 983.0) internal successors, (4915), 5 states have internal predecessors, (4915), 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 03:05:34,932 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 983.0) internal successors, (4915), 5 states have internal predecessors, (4915), 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 03:05:34,932 INFO L175 Difference]: Start difference. First operand has 90 places, 104 transitions, 780 flow. Second operand 4 states and 1425 transitions. [2023-01-28 03:05:34,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 118 transitions, 1076 flow [2023-01-28 03:05:34,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 118 transitions, 1057 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-01-28 03:05:34,936 INFO L231 Difference]: Finished difference. Result has 90 places, 103 transitions, 760 flow [2023-01-28 03:05:34,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=760, PETRI_PLACES=90, PETRI_TRANSITIONS=103} [2023-01-28 03:05:34,937 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2023-01-28 03:05:34,937 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 103 transitions, 760 flow [2023-01-28 03:05:34,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 347.14285714285717) internal successors, (2430), 7 states have internal predecessors, (2430), 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 03:05:34,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:05:34,938 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:05:34,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-28 03:05:34,938 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:05:34,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:05:34,938 INFO L85 PathProgramCache]: Analyzing trace with hash -2001024701, now seen corresponding path program 1 times [2023-01-28 03:05:34,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:05:34,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274588828] [2023-01-28 03:05:34,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:05:34,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:05:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:05:35,137 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-01-28 03:05:35,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:05:35,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274588828] [2023-01-28 03:05:35,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274588828] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:05:35,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:05:35,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 03:05:35,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106748407] [2023-01-28 03:05:35,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:05:35,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 03:05:35,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:05:35,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 03:05:35,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 03:05:35,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 397 out of 983 [2023-01-28 03:05:35,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 103 transitions, 760 flow. Second operand has 3 states, 3 states have (on average 407.0) internal successors, (1221), 3 states have internal predecessors, (1221), 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 03:05:35,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:05:35,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 397 of 983 [2023-01-28 03:05:35,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:05:35,406 INFO L130 PetriNetUnfolder]: 232/452 cut-off events. [2023-01-28 03:05:35,407 INFO L131 PetriNetUnfolder]: For 560/560 co-relation queries the response was YES. [2023-01-28 03:05:35,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1730 conditions, 452 events. 232/452 cut-off events. For 560/560 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1357 event pairs, 87 based on Foata normal form. 0/381 useless extension candidates. Maximal degree in co-relation 1397. Up to 344 conditions per place. [2023-01-28 03:05:35,409 INFO L137 encePairwiseOnDemand]: 980/983 looper letters, 112 selfloop transitions, 3 changer transitions 0/115 dead transitions. [2023-01-28 03:05:35,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 115 transitions, 1041 flow [2023-01-28 03:05:35,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 03:05:35,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 03:05:35,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1240 transitions. [2023-01-28 03:05:35,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.420481519159037 [2023-01-28 03:05:35,412 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1240 transitions. [2023-01-28 03:05:35,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1240 transitions. [2023-01-28 03:05:35,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:05:35,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1240 transitions. [2023-01-28 03:05:35,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 413.3333333333333) internal successors, (1240), 3 states have internal predecessors, (1240), 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 03:05:35,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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 03:05:35,416 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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 03:05:35,416 INFO L175 Difference]: Start difference. First operand has 90 places, 103 transitions, 760 flow. Second operand 3 states and 1240 transitions. [2023-01-28 03:05:35,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 115 transitions, 1041 flow [2023-01-28 03:05:35,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 115 transitions, 1032 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-01-28 03:05:35,420 INFO L231 Difference]: Finished difference. Result has 89 places, 103 transitions, 763 flow [2023-01-28 03:05:35,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=763, PETRI_PLACES=89, PETRI_TRANSITIONS=103} [2023-01-28 03:05:35,421 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 59 predicate places. [2023-01-28 03:05:35,421 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 103 transitions, 763 flow [2023-01-28 03:05:35,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 407.0) internal successors, (1221), 3 states have internal predecessors, (1221), 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 03:05:35,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:05:35,421 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:05:35,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 03:05:35,422 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:05:35,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:05:35,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1219073865, now seen corresponding path program 1 times [2023-01-28 03:05:35,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:05:35,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908355330] [2023-01-28 03:05:35,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:05:35,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:05:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:05:35,518 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-01-28 03:05:35,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:05:35,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908355330] [2023-01-28 03:05:35,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908355330] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:05:35,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:05:35,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 03:05:35,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503373021] [2023-01-28 03:05:35,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:05:35,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 03:05:35,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:05:35,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 03:05:35,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 03:05:35,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 383 out of 983 [2023-01-28 03:05:35,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 103 transitions, 763 flow. Second operand has 3 states, 3 states have (on average 393.3333333333333) internal successors, (1180), 3 states have internal predecessors, (1180), 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 03:05:35,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:05:35,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 383 of 983 [2023-01-28 03:05:35,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:05:35,773 INFO L130 PetriNetUnfolder]: 207/412 cut-off events. [2023-01-28 03:05:35,773 INFO L131 PetriNetUnfolder]: For 521/521 co-relation queries the response was YES. [2023-01-28 03:05:35,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1636 conditions, 412 events. 207/412 cut-off events. For 521/521 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1188 event pairs, 67 based on Foata normal form. 14/366 useless extension candidates. Maximal degree in co-relation 1382. Up to 297 conditions per place. [2023-01-28 03:05:35,775 INFO L137 encePairwiseOnDemand]: 978/983 looper letters, 111 selfloop transitions, 4 changer transitions 0/115 dead transitions. [2023-01-28 03:05:35,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 115 transitions, 1043 flow [2023-01-28 03:05:35,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 03:05:35,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 03:05:35,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1199 transitions. [2023-01-28 03:05:35,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.406578501186843 [2023-01-28 03:05:35,777 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1199 transitions. [2023-01-28 03:05:35,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1199 transitions. [2023-01-28 03:05:35,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:05:35,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1199 transitions. [2023-01-28 03:05:35,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 399.6666666666667) internal successors, (1199), 3 states have internal predecessors, (1199), 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 03:05:35,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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 03:05:35,781 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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 03:05:35,781 INFO L175 Difference]: Start difference. First operand has 89 places, 103 transitions, 763 flow. Second operand 3 states and 1199 transitions. [2023-01-28 03:05:35,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 115 transitions, 1043 flow [2023-01-28 03:05:35,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 115 transitions, 1040 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 03:05:35,784 INFO L231 Difference]: Finished difference. Result has 92 places, 105 transitions, 794 flow [2023-01-28 03:05:35,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=794, PETRI_PLACES=92, PETRI_TRANSITIONS=105} [2023-01-28 03:05:35,785 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2023-01-28 03:05:35,785 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 105 transitions, 794 flow [2023-01-28 03:05:35,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 393.3333333333333) internal successors, (1180), 3 states have internal predecessors, (1180), 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 03:05:35,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:05:35,785 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:05:35,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-28 03:05:35,785 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:05:35,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:05:35,786 INFO L85 PathProgramCache]: Analyzing trace with hash 570594595, now seen corresponding path program 1 times [2023-01-28 03:05:35,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:05:35,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780997276] [2023-01-28 03:05:35,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:05:35,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:05:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:05:41,335 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-01-28 03:05:41,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:05:41,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780997276] [2023-01-28 03:05:41,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780997276] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:05:41,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147665235] [2023-01-28 03:05:41,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:05:41,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:05:41,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:05:41,336 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:05:41,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 03:05:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:05:42,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 42 conjunts are in the unsatisfiable core [2023-01-28 03:05:42,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:05:44,375 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:05:44,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 65 [2023-01-28 03:05:44,405 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 03:05:44,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2023-01-28 03:05:44,414 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 03:05:44,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 29 [2023-01-28 03:05:44,471 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-01-28 03:05:44,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:07:55,876 WARN L222 SmtUtils]: Spent 2.14m on a formula simplification. DAG size of input: 105 DAG size of output: 82 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 03:07:57,149 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:07:57,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 886 treesize of output 1231 Received shutdown request... [2023-01-28 03:12:01,040 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-28 03:12:01,041 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 03:12:01,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-28 03:12:01,054 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 03:12:01,054 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 03:12:01,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-01-28 03:12:01,242 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 76 with TraceHistMax 13,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 15ms.. [2023-01-28 03:12:01,243 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 03:12:01,244 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 03:12:01,244 INFO L445 BasicCegarLoop]: Path program histogram: [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:12:01,246 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 03:12:01,246 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 03:12:01,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 03:12:01 BasicIcfg [2023-01-28 03:12:01,247 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 03:12:01,248 INFO L158 Benchmark]: Toolchain (without parser) took 822519.83ms. Allocated memory was 356.5MB in the beginning and 2.1GB in the end (delta: 1.7GB). Free memory was 304.6MB in the beginning and 1.3GB in the end (delta: -983.6MB). Peak memory consumption was 1.3GB. Max. memory is 16.0GB. [2023-01-28 03:12:01,248 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 212.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 03:12:01,248 INFO L158 Benchmark]: CACSL2BoogieTranslator took 266.59ms. Allocated memory is still 356.5MB. Free memory was 304.6MB in the beginning and 330.0MB in the end (delta: -25.4MB). Peak memory consumption was 24.8MB. Max. memory is 16.0GB. [2023-01-28 03:12:01,248 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.46ms. Allocated memory is still 356.5MB. Free memory was 330.0MB in the beginning and 322.3MB in the end (delta: 7.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.0GB. [2023-01-28 03:12:01,248 INFO L158 Benchmark]: Boogie Preprocessor took 96.51ms. Allocated memory is still 356.5MB. Free memory was 322.3MB in the beginning and 314.7MB in the end (delta: 7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. [2023-01-28 03:12:01,248 INFO L158 Benchmark]: RCFGBuilder took 2455.55ms. Allocated memory was 356.5MB in the beginning and 446.7MB in the end (delta: 90.2MB). Free memory was 314.7MB in the beginning and 347.8MB in the end (delta: -33.1MB). Peak memory consumption was 168.4MB. Max. memory is 16.0GB. [2023-01-28 03:12:01,248 INFO L158 Benchmark]: TraceAbstraction took 819634.65ms. Allocated memory was 446.7MB in the beginning and 2.1GB in the end (delta: 1.6GB). Free memory was 346.8MB in the beginning and 1.3GB in the end (delta: -941.4MB). Peak memory consumption was 1.3GB. Max. memory is 16.0GB. [2023-01-28 03:12:01,249 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 212.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 266.59ms. Allocated memory is still 356.5MB. Free memory was 304.6MB in the beginning and 330.0MB in the end (delta: -25.4MB). Peak memory consumption was 24.8MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 60.46ms. Allocated memory is still 356.5MB. Free memory was 330.0MB in the beginning and 322.3MB in the end (delta: 7.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.0GB. * Boogie Preprocessor took 96.51ms. Allocated memory is still 356.5MB. Free memory was 322.3MB in the beginning and 314.7MB in the end (delta: 7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. * RCFGBuilder took 2455.55ms. Allocated memory was 356.5MB in the beginning and 446.7MB in the end (delta: 90.2MB). Free memory was 314.7MB in the beginning and 347.8MB in the end (delta: -33.1MB). Peak memory consumption was 168.4MB. Max. memory is 16.0GB. * TraceAbstraction took 819634.65ms. Allocated memory was 446.7MB in the beginning and 2.1GB in the end (delta: 1.6GB). Free memory was 346.8MB in the beginning and 1.3GB in the end (delta: -941.4MB). Peak memory consumption was 1.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 46.8s, 399 PlacesBefore, 30 PlacesAfterwards, 445 TransitionsBefore, 39 TransitionsAfterwards, 7700 CoEnabledTransitionPairs, 7 FixpointIterations, 273 TrivialSequentialCompositions, 115 ConcurrentSequentialCompositions, 78 TrivialYvCompositions, 25 ConcurrentYvCompositions, 37 ChoiceCompositions, 528 TotalNumberOfCompositions, 7716 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7556, independent: 7535, independent conditional: 0, independent unconditional: 7535, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4369, independent: 4350, independent conditional: 0, independent unconditional: 4350, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7556, independent: 3185, independent conditional: 0, independent unconditional: 3185, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 4369, unknown conditional: 0, unknown unconditional: 4369] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 235]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 76 with TraceHistMax 13,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 15ms.. - TimeoutResultAtElement [Line: 229]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 76 with TraceHistMax 13,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 15ms.. - TimeoutResultAtElement [Line: 230]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 76 with TraceHistMax 13,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 15ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 497 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 819.4s, OverallIterations: 18, TraceHistogramMax: 13, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 8.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 47.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 821 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 821 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 442 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1914 IncrementalHoareTripleChecker+Invalid, 2356 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 442 mSolverCounterUnsat, 0 mSDtfsCounter, 1914 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 700 GetRequests, 551 SyntacticMatches, 17 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=897occurred in iteration=10, InterpolantAutomatonStates: 101, 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: 0.5s SsaConstructionTime, 177.4s SatisfiabilityAnalysisTime, 194.7s InterpolantComputationTime, 1394 NumberOfCodeBlocks, 1280 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 1568 ConstructedInterpolants, 0 QuantifiedInterpolants, 9682 SizeOfPredicates, 100 NumberOfNonLiveVariables, 4115 ConjunctsInSsa, 77 ConjunctsInUnsatCore, 29 InterpolantComputations, 13 PerfectInterpolantSequences, 3606/4017 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