/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-lamport.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 09:41:24,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 09:41:24,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 09:41:24,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 09:41:24,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 09:41:24,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 09:41:24,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 09:41:24,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 09:41:24,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 09:41:24,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 09:41:24,336 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 09:41:24,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 09:41:24,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 09:41:24,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 09:41:24,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 09:41:24,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 09:41:24,343 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 09:41:24,344 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 09:41:24,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 09:41:24,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 09:41:24,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 09:41:24,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 09:41:24,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 09:41:24,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 09:41:24,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 09:41:24,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 09:41:24,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 09:41:24,362 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 09:41:24,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 09:41:24,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 09:41:24,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 09:41:24,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 09:41:24,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 09:41:24,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 09:41:24,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 09:41:24,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 09:41:24,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 09:41:24,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 09:41:24,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 09:41:24,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 09:41:24,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 09:41:24,369 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 09:41:24,393 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 09:41:24,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 09:41:24,394 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 09:41:24,394 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 09:41:24,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 09:41:24,395 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 09:41:24,395 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 09:41:24,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 09:41:24,396 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 09:41:24,396 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 09:41:24,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 09:41:24,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 09:41:24,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 09:41:24,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 09:41:24,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 09:41:24,397 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 09:41:24,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 09:41:24,397 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 09:41:24,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 09:41:24,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 09:41:24,398 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 09:41:24,398 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 09:41:24,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 09:41:24,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:41:24,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 09:41:24,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 09:41:24,399 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 09:41:24,399 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 09:41:24,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 09:41:24,399 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 09:41:24,399 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 09:41:24,399 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 09:41:24,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 09:41:24,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 09:41:24,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 09:41:24,633 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 09:41:24,633 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 09:41:24,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-lamport.wvr.c [2023-01-28 09:41:25,685 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 09:41:25,862 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 09:41:25,863 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-lamport.wvr.c [2023-01-28 09:41:25,868 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c16f89580/3db5fad24bfc4160936471b38ddb7672/FLAG697880d58 [2023-01-28 09:41:25,879 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c16f89580/3db5fad24bfc4160936471b38ddb7672 [2023-01-28 09:41:25,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 09:41:25,882 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 09:41:25,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 09:41:25,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 09:41:25,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 09:41:25,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:41:25" (1/1) ... [2023-01-28 09:41:25,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15765018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:41:25, skipping insertion in model container [2023-01-28 09:41:25,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:41:25" (1/1) ... [2023-01-28 09:41:25,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 09:41:25,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 09:41:26,036 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/parallel-lamport.wvr.c[4210,4223] [2023-01-28 09:41:26,044 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:41:26,051 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 09:41:26,072 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/parallel-lamport.wvr.c[4210,4223] [2023-01-28 09:41:26,075 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:41:26,081 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 09:41:26,081 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 09:41:26,086 INFO L208 MainTranslator]: Completed translation [2023-01-28 09:41:26,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:41:26 WrapperNode [2023-01-28 09:41:26,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 09:41:26,087 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 09:41:26,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 09:41:26,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 09:41:26,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:41:26" (1/1) ... [2023-01-28 09:41:26,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:41:26" (1/1) ... [2023-01-28 09:41:26,132 INFO L138 Inliner]: procedures = 25, calls = 89, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 243 [2023-01-28 09:41:26,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 09:41:26,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 09:41:26,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 09:41:26,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 09:41:26,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:41:26" (1/1) ... [2023-01-28 09:41:26,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:41:26" (1/1) ... [2023-01-28 09:41:26,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:41:26" (1/1) ... [2023-01-28 09:41:26,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:41:26" (1/1) ... [2023-01-28 09:41:26,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:41:26" (1/1) ... [2023-01-28 09:41:26,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:41:26" (1/1) ... [2023-01-28 09:41:26,154 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:41:26" (1/1) ... [2023-01-28 09:41:26,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:41:26" (1/1) ... [2023-01-28 09:41:26,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 09:41:26,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 09:41:26,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 09:41:26,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 09:41:26,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:41:26" (1/1) ... [2023-01-28 09:41:26,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:41:26,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:41:26,190 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 09:41:26,196 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 09:41:26,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 09:41:26,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 09:41:26,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 09:41:26,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 09:41:26,217 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 09:41:26,217 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 09:41:26,217 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 09:41:26,217 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 09:41:26,217 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 09:41:26,217 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 09:41:26,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 09:41:26,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 09:41:26,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 09:41:26,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 09:41:26,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 09:41:26,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 09:41:26,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 09:41:26,219 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 09:41:26,298 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 09:41:26,299 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 09:41:26,620 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 09:41:26,702 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 09:41:26,702 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-01-28 09:41:26,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:41:26 BoogieIcfgContainer [2023-01-28 09:41:26,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 09:41:26,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 09:41:26,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 09:41:26,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 09:41:26,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 09:41:25" (1/3) ... [2023-01-28 09:41:26,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fb95f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:41:26, skipping insertion in model container [2023-01-28 09:41:26,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:41:26" (2/3) ... [2023-01-28 09:41:26,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fb95f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:41:26, skipping insertion in model container [2023-01-28 09:41:26,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:41:26" (3/3) ... [2023-01-28 09:41:26,711 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2023-01-28 09:41:26,725 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 09:41:26,725 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 09:41:26,725 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 09:41:26,798 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 09:41:26,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 180 transitions, 384 flow [2023-01-28 09:41:26,901 INFO L130 PetriNetUnfolder]: 7/177 cut-off events. [2023-01-28 09:41:26,902 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:41:26,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 177 events. 7/177 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 103 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 146. Up to 2 conditions per place. [2023-01-28 09:41:26,905 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 180 transitions, 384 flow [2023-01-28 09:41:26,909 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 167 transitions, 352 flow [2023-01-28 09:41:26,912 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 09:41:26,920 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 167 transitions, 352 flow [2023-01-28 09:41:26,922 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 167 transitions, 352 flow [2023-01-28 09:41:26,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 167 transitions, 352 flow [2023-01-28 09:41:26,960 INFO L130 PetriNetUnfolder]: 7/167 cut-off events. [2023-01-28 09:41:26,960 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:41:26,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 167 events. 7/167 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 101 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 146. Up to 2 conditions per place. [2023-01-28 09:41:26,962 INFO L119 LiptonReduction]: Number of co-enabled transitions 1266 [2023-01-28 09:41:32,125 INFO L134 LiptonReduction]: Checked pairs total: 7223 [2023-01-28 09:41:32,126 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-01-28 09:41:32,138 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 09:41:32,143 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;@67c85150, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 09:41:32,143 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 09:41:32,150 INFO L130 PetriNetUnfolder]: 1/35 cut-off events. [2023-01-28 09:41:32,150 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:41:32,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:41:32,151 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:41:32,151 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:41:32,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:41:32,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1679152980, now seen corresponding path program 1 times [2023-01-28 09:41:32,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:41:32,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901878898] [2023-01-28 09:41:32,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:41:32,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:41:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:41:32,809 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 09:41:32,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:41:32,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901878898] [2023-01-28 09:41:32,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901878898] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:41:32,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:41:32,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 09:41:32,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186556771] [2023-01-28 09:41:32,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:41:32,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:41:32,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:41:32,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:41:32,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:41:32,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 327 [2023-01-28 09:41:32,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 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 09:41:32,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:41:32,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 327 [2023-01-28 09:41:32,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:41:32,997 INFO L130 PetriNetUnfolder]: 406/717 cut-off events. [2023-01-28 09:41:32,997 INFO L131 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2023-01-28 09:41:33,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1490 conditions, 717 events. 406/717 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3277 event pairs, 405 based on Foata normal form. 0/690 useless extension candidates. Maximal degree in co-relation 1330. Up to 667 conditions per place. [2023-01-28 09:41:33,007 INFO L137 encePairwiseOnDemand]: 324/327 looper letters, 25 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-01-28 09:41:33,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 37 transitions, 146 flow [2023-01-28 09:41:33,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:41:33,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:41:33,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 451 transitions. [2023-01-28 09:41:33,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4597349643221203 [2023-01-28 09:41:33,026 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 451 transitions. [2023-01-28 09:41:33,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 451 transitions. [2023-01-28 09:41:33,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:41:33,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 451 transitions. [2023-01-28 09:41:33,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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 09:41:33,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 09:41:33,062 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 09:41:33,064 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 90 flow. Second operand 3 states and 451 transitions. [2023-01-28 09:41:33,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 37 transitions, 146 flow [2023-01-28 09:41:33,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 134 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 09:41:33,072 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 90 flow [2023-01-28 09:41:33,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2023-01-28 09:41:33,078 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -3 predicate places. [2023-01-28 09:41:33,078 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 90 flow [2023-01-28 09:41:33,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 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 09:41:33,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:41:33,079 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:41:33,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 09:41:33,080 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:41:33,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:41:33,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1807884856, now seen corresponding path program 1 times [2023-01-28 09:41:33,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:41:33,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256562845] [2023-01-28 09:41:33,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:41:33,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:41:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:41:33,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:41:33,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:41:33,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256562845] [2023-01-28 09:41:33,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256562845] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:41:33,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:41:33,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:41:33,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408627428] [2023-01-28 09:41:33,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:41:33,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:41:33,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:41:33,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:41:33,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:41:33,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 327 [2023-01-28 09:41:33,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 90 flow. Second operand has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 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 09:41:33,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:41:33,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 327 [2023-01-28 09:41:33,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:41:33,695 INFO L130 PetriNetUnfolder]: 1344/2387 cut-off events. [2023-01-28 09:41:33,695 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-01-28 09:41:33,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4683 conditions, 2387 events. 1344/2387 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 13533 event pairs, 243 based on Foata normal form. 30/2415 useless extension candidates. Maximal degree in co-relation 4672. Up to 695 conditions per place. [2023-01-28 09:41:33,708 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 102 selfloop transitions, 16 changer transitions 0/124 dead transitions. [2023-01-28 09:41:33,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 124 transitions, 514 flow [2023-01-28 09:41:33,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:41:33,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:41:33,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1396 transitions. [2023-01-28 09:41:33,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4743459055385661 [2023-01-28 09:41:33,712 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1396 transitions. [2023-01-28 09:41:33,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1396 transitions. [2023-01-28 09:41:33,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:41:33,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1396 transitions. [2023-01-28 09:41:33,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 155.11111111111111) internal successors, (1396), 9 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 09:41:33,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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 09:41:33,721 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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 09:41:33,721 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 90 flow. Second operand 9 states and 1396 transitions. [2023-01-28 09:41:33,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 124 transitions, 514 flow [2023-01-28 09:41:33,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 124 transitions, 510 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 09:41:33,725 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 182 flow [2023-01-28 09:41:33,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=182, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2023-01-28 09:41:33,726 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 9 predicate places. [2023-01-28 09:41:33,726 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 182 flow [2023-01-28 09:41:33,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 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 09:41:33,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:41:33,727 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:41:33,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 09:41:33,728 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:41:33,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:41:33,730 INFO L85 PathProgramCache]: Analyzing trace with hash -2091808474, now seen corresponding path program 2 times [2023-01-28 09:41:33,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:41:33,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873458948] [2023-01-28 09:41:33,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:41:33,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:41:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:41:33,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:41:33,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:41:33,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873458948] [2023-01-28 09:41:33,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873458948] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:41:33,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:41:33,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:41:33,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134814346] [2023-01-28 09:41:33,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:41:33,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:41:33,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:41:33,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:41:33,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:41:33,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 327 [2023-01-28 09:41:33,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 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 09:41:33,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:41:33,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 327 [2023-01-28 09:41:33,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:41:34,120 INFO L130 PetriNetUnfolder]: 1068/1983 cut-off events. [2023-01-28 09:41:34,120 INFO L131 PetriNetUnfolder]: For 375/375 co-relation queries the response was YES. [2023-01-28 09:41:34,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4383 conditions, 1983 events. 1068/1983 cut-off events. For 375/375 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 11762 event pairs, 893 based on Foata normal form. 20/1959 useless extension candidates. Maximal degree in co-relation 4362. Up to 1600 conditions per place. [2023-01-28 09:41:34,130 INFO L137 encePairwiseOnDemand]: 324/327 looper letters, 44 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-01-28 09:41:34,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 61 transitions, 301 flow [2023-01-28 09:41:34,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:41:34,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:41:34,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 495 transitions. [2023-01-28 09:41:34,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045871559633027 [2023-01-28 09:41:34,132 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 495 transitions. [2023-01-28 09:41:34,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 495 transitions. [2023-01-28 09:41:34,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:41:34,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 495 transitions. [2023-01-28 09:41:34,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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 09:41:34,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 09:41:34,136 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 09:41:34,136 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 182 flow. Second operand 3 states and 495 transitions. [2023-01-28 09:41:34,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 61 transitions, 301 flow [2023-01-28 09:41:34,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 61 transitions, 301 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 09:41:34,142 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 190 flow [2023-01-28 09:41:34,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2023-01-28 09:41:34,143 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2023-01-28 09:41:34,143 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 190 flow [2023-01-28 09:41:34,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 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 09:41:34,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:41:34,144 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:41:34,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 09:41:34,144 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:41:34,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:41:34,144 INFO L85 PathProgramCache]: Analyzing trace with hash 124098926, now seen corresponding path program 3 times [2023-01-28 09:41:34,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:41:34,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842352156] [2023-01-28 09:41:34,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:41:34,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:41:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:41:34,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:41:34,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:41:34,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842352156] [2023-01-28 09:41:34,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842352156] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:41:34,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190668072] [2023-01-28 09:41:34,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 09:41:34,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:41:34,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:41:34,767 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 09:41:34,798 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 09:41:35,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-28 09:41:35,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:41:35,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 16 conjunts are in the unsatisfiable core [2023-01-28 09:41:35,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:41:35,314 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:41:35,315 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-28 09:41:35,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:41:35,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:41:35,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190668072] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:41:35,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:41:35,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2023-01-28 09:41:35,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741923356] [2023-01-28 09:41:35,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:41:35,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:41:35,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:41:35,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:41:35,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2023-01-28 09:41:35,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 327 [2023-01-28 09:41:35,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 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 09:41:35,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:41:35,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 327 [2023-01-28 09:41:35,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:41:40,674 INFO L130 PetriNetUnfolder]: 1534/2633 cut-off events. [2023-01-28 09:41:40,675 INFO L131 PetriNetUnfolder]: For 639/639 co-relation queries the response was YES. [2023-01-28 09:41:40,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6057 conditions, 2633 events. 1534/2633 cut-off events. For 639/639 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 14935 event pairs, 307 based on Foata normal form. 2/2573 useless extension candidates. Maximal degree in co-relation 6034. Up to 1421 conditions per place. [2023-01-28 09:41:40,689 INFO L137 encePairwiseOnDemand]: 320/327 looper letters, 88 selfloop transitions, 11 changer transitions 23/137 dead transitions. [2023-01-28 09:41:40,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 137 transitions, 694 flow [2023-01-28 09:41:40,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:41:40,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:41:40,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1287 transitions. [2023-01-28 09:41:40,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43730886850152906 [2023-01-28 09:41:40,692 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1287 transitions. [2023-01-28 09:41:40,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1287 transitions. [2023-01-28 09:41:40,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:41:40,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1287 transitions. [2023-01-28 09:41:40,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 143.0) internal successors, (1287), 9 states have internal predecessors, (1287), 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 09:41:40,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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 09:41:40,701 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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 09:41:40,701 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 190 flow. Second operand 9 states and 1287 transitions. [2023-01-28 09:41:40,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 137 transitions, 694 flow [2023-01-28 09:41:40,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 137 transitions, 690 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 09:41:40,708 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 251 flow [2023-01-28 09:41:40,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=251, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2023-01-28 09:41:40,708 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 22 predicate places. [2023-01-28 09:41:40,709 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 251 flow [2023-01-28 09:41:40,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 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 09:41:40,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:41:40,709 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:41:40,715 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 09:41:40,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:41:40,910 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:41:40,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:41:40,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1110793696, now seen corresponding path program 4 times [2023-01-28 09:41:40,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:41:40,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044198881] [2023-01-28 09:41:40,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:41:40,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:41:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:41:41,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:41:41,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:41:41,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044198881] [2023-01-28 09:41:41,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044198881] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:41:41,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975825442] [2023-01-28 09:41:41,885 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 09:41:41,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:41:41,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:41:41,889 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 09:41:41,917 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 09:41:41,977 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 09:41:41,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:41:41,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 16 conjunts are in the unsatisfiable core [2023-01-28 09:41:41,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:41:42,150 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:41:42,151 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-28 09:41:42,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:41:42,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:41:42,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975825442] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:41:42,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:41:42,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 16 [2023-01-28 09:41:42,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577170304] [2023-01-28 09:41:42,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:41:42,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:41:42,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:41:42,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:41:42,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-01-28 09:41:42,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 327 [2023-01-28 09:41:42,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 251 flow. Second operand has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 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 09:41:42,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:41:42,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 327 [2023-01-28 09:41:42,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:41:48,589 INFO L130 PetriNetUnfolder]: 2114/3781 cut-off events. [2023-01-28 09:41:48,590 INFO L131 PetriNetUnfolder]: For 1863/1863 co-relation queries the response was YES. [2023-01-28 09:41:48,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9967 conditions, 3781 events. 2114/3781 cut-off events. For 1863/1863 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 24184 event pairs, 457 based on Foata normal form. 2/3712 useless extension candidates. Maximal degree in co-relation 9939. Up to 1577 conditions per place. [2023-01-28 09:41:48,608 INFO L137 encePairwiseOnDemand]: 320/327 looper letters, 124 selfloop transitions, 14 changer transitions 27/180 dead transitions. [2023-01-28 09:41:48,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 180 transitions, 1023 flow [2023-01-28 09:41:48,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:41:48,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:41:48,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1305 transitions. [2023-01-28 09:41:48,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434250764525994 [2023-01-28 09:41:48,612 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1305 transitions. [2023-01-28 09:41:48,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1305 transitions. [2023-01-28 09:41:48,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:41:48,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1305 transitions. [2023-01-28 09:41:48,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 145.0) internal successors, (1305), 9 states have internal predecessors, (1305), 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 09:41:48,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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 09:41:48,619 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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 09:41:48,619 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 251 flow. Second operand 9 states and 1305 transitions. [2023-01-28 09:41:48,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 180 transitions, 1023 flow [2023-01-28 09:41:48,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 180 transitions, 1017 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-01-28 09:41:48,629 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 366 flow [2023-01-28 09:41:48,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=366, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2023-01-28 09:41:48,629 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 33 predicate places. [2023-01-28 09:41:48,630 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 366 flow [2023-01-28 09:41:48,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 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 09:41:48,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:41:48,630 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:41:48,637 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 09:41:48,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:41:48,835 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:41:48,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:41:48,836 INFO L85 PathProgramCache]: Analyzing trace with hash 2111945012, now seen corresponding path program 5 times [2023-01-28 09:41:48,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:41:48,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696835018] [2023-01-28 09:41:48,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:41:48,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:41:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:41:49,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:41:49,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:41:49,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696835018] [2023-01-28 09:41:49,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696835018] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:41:49,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210256696] [2023-01-28 09:41:49,608 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 09:41:49,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:41:49,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:41:49,611 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 09:41:49,636 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 09:41:49,713 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 09:41:49,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:41:49,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 49 conjunts are in the unsatisfiable core [2023-01-28 09:41:49,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:41:49,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-01-28 09:41:49,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 09:41:49,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 09:41:49,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 09:41:50,075 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:41:50,076 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 26 [2023-01-28 09:41:50,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:41:50,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:41:50,736 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~f~0.offset (* c_~j~0 4))) (.cse3 (+ c_~f~0.offset (* c_~i~0 4)))) (and (forall ((v_ArrVal_201 (Array Int Int)) (v_ArrVal_200 (Array Int Int))) (let ((.cse1 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_200) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_201) c_~f~0.base))) (let ((.cse0 (select .cse1 .cse3))) (or (<= c_~n~0 .cse0) (< (select .cse1 (+ c_~f~0.offset (* (select .cse1 .cse2) 4))) 1) (< .cse0 0))))) (forall ((v_ArrVal_201 (Array Int Int)) (v_ArrVal_200 (Array Int Int))) (let ((.cse4 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_200) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_201) c_~f~0.base))) (let ((.cse5 (select .cse4 .cse3))) (or (< c_~n~0 (+ (select .cse4 (+ c_~f~0.offset (* (select .cse4 .cse2) 4))) 2)) (<= c_~n~0 .cse5) (< .cse5 0))))))) is different from false [2023-01-28 09:41:51,093 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:41:51,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 92 [2023-01-28 09:41:51,108 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:41:51,108 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 1024 treesize of output 980 [2023-01-28 09:41:51,160 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:41:51,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 548 treesize of output 432 [2023-01-28 09:41:51,193 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:41:51,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 186 treesize of output 178 [2023-01-28 09:41:51,232 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:41:51,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 219 treesize of output 175 [2023-01-28 09:41:51,256 INFO L208 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-01-28 09:41:52,079 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 09:41:52,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 1 [2023-01-28 09:41:52,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:41:52,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210256696] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:41:52,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:41:52,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 29 [2023-01-28 09:41:52,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529804565] [2023-01-28 09:41:52,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:41:52,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 09:41:52,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:41:52,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 09:41:52,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=690, Unknown=5, NotChecked=56, Total=930 [2023-01-28 09:41:52,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 327 [2023-01-28 09:41:52,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 366 flow. Second operand has 31 states, 31 states have (on average 111.54838709677419) internal successors, (3458), 31 states have internal predecessors, (3458), 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 09:41:52,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:41:52,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 327 [2023-01-28 09:41:52,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:42:01,081 WARN L222 SmtUtils]: Spent 8.21s on a formula simplification. DAG size of input: 75 DAG size of output: 61 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 09:42:02,344 INFO L130 PetriNetUnfolder]: 4565/8220 cut-off events. [2023-01-28 09:42:02,344 INFO L131 PetriNetUnfolder]: For 8576/8577 co-relation queries the response was YES. [2023-01-28 09:42:02,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24123 conditions, 8220 events. 4565/8220 cut-off events. For 8576/8577 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 61233 event pairs, 1160 based on Foata normal form. 20/8097 useless extension candidates. Maximal degree in co-relation 24060. Up to 3163 conditions per place. [2023-01-28 09:42:02,387 INFO L137 encePairwiseOnDemand]: 317/327 looper letters, 58 selfloop transitions, 9 changer transitions 195/277 dead transitions. [2023-01-28 09:42:02,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 277 transitions, 1795 flow [2023-01-28 09:42:02,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 09:42:02,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 09:42:02,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1938 transitions. [2023-01-28 09:42:02,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3704128440366973 [2023-01-28 09:42:02,392 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1938 transitions. [2023-01-28 09:42:02,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1938 transitions. [2023-01-28 09:42:02,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:42:02,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1938 transitions. [2023-01-28 09:42:02,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 121.125) internal successors, (1938), 16 states have internal predecessors, (1938), 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 09:42:02,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 327.0) internal successors, (5559), 17 states have internal predecessors, (5559), 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 09:42:02,404 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 327.0) internal successors, (5559), 17 states have internal predecessors, (5559), 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 09:42:02,404 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 366 flow. Second operand 16 states and 1938 transitions. [2023-01-28 09:42:02,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 277 transitions, 1795 flow [2023-01-28 09:42:02,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 277 transitions, 1751 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-01-28 09:42:02,443 INFO L231 Difference]: Finished difference. Result has 98 places, 72 transitions, 479 flow [2023-01-28 09:42:02,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=479, PETRI_PLACES=98, PETRI_TRANSITIONS=72} [2023-01-28 09:42:02,444 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 53 predicate places. [2023-01-28 09:42:02,444 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 72 transitions, 479 flow [2023-01-28 09:42:02,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 111.54838709677419) internal successors, (3458), 31 states have internal predecessors, (3458), 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 09:42:02,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:42:02,445 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:42:02,455 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 09:42:02,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:42:02,650 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:42:02,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:42:02,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1199619666, now seen corresponding path program 6 times [2023-01-28 09:42:02,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:42:02,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409658337] [2023-01-28 09:42:02,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:42:02,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:42:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:42:02,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:42:02,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:42:02,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409658337] [2023-01-28 09:42:02,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409658337] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:42:02,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:42:02,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 09:42:02,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715829720] [2023-01-28 09:42:02,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:42:02,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:42:02,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:42:02,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:42:02,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:42:02,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 327 [2023-01-28 09:42:02,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 72 transitions, 479 flow. Second operand has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 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 09:42:02,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:42:02,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 327 [2023-01-28 09:42:02,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:42:03,574 INFO L130 PetriNetUnfolder]: 2554/4658 cut-off events. [2023-01-28 09:42:03,574 INFO L131 PetriNetUnfolder]: For 17256/17256 co-relation queries the response was YES. [2023-01-28 09:42:03,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19377 conditions, 4658 events. 2554/4658 cut-off events. For 17256/17256 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 31497 event pairs, 792 based on Foata normal form. 2/4584 useless extension candidates. Maximal degree in co-relation 19330. Up to 2169 conditions per place. [2023-01-28 09:42:03,601 INFO L137 encePairwiseOnDemand]: 320/327 looper letters, 120 selfloop transitions, 17 changer transitions 24/176 dead transitions. [2023-01-28 09:42:03,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 176 transitions, 1387 flow [2023-01-28 09:42:03,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:42:03,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:42:03,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1301 transitions. [2023-01-28 09:42:03,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420659191301393 [2023-01-28 09:42:03,605 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1301 transitions. [2023-01-28 09:42:03,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1301 transitions. [2023-01-28 09:42:03,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:42:03,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1301 transitions. [2023-01-28 09:42:03,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 144.55555555555554) internal successors, (1301), 9 states have internal predecessors, (1301), 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 09:42:03,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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 09:42:03,612 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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 09:42:03,612 INFO L175 Difference]: Start difference. First operand has 98 places, 72 transitions, 479 flow. Second operand 9 states and 1301 transitions. [2023-01-28 09:42:03,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 176 transitions, 1387 flow [2023-01-28 09:42:03,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 176 transitions, 1284 flow, removed 46 selfloop flow, removed 5 redundant places. [2023-01-28 09:42:03,651 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 592 flow [2023-01-28 09:42:03,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=592, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2023-01-28 09:42:03,652 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 51 predicate places. [2023-01-28 09:42:03,653 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 592 flow [2023-01-28 09:42:03,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 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 09:42:03,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:42:03,653 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:42:03,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 09:42:03,653 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:42:03,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:42:03,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1405549144, now seen corresponding path program 7 times [2023-01-28 09:42:03,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:42:03,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134189580] [2023-01-28 09:42:03,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:42:03,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:42:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:42:04,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:42:04,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:42:04,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134189580] [2023-01-28 09:42:04,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134189580] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:42:04,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983738357] [2023-01-28 09:42:04,437 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 09:42:04,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:42:04,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:42:04,441 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 09:42:04,445 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 09:42:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:42:04,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 22 conjunts are in the unsatisfiable core [2023-01-28 09:42:04,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:42:04,755 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:42:04,756 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-28 09:42:04,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:42:04,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:42:04,882 INFO L321 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2023-01-28 09:42:04,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2023-01-28 09:42:04,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:42:04,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983738357] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 09:42:04,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 09:42:04,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 19 [2023-01-28 09:42:04,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344124142] [2023-01-28 09:42:04,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:42:04,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:42:04,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:42:04,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:42:04,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2023-01-28 09:42:04,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 327 [2023-01-28 09:42:04,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 592 flow. Second operand has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 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 09:42:04,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:42:04,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 327 [2023-01-28 09:42:04,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:42:06,208 INFO L130 PetriNetUnfolder]: 2531/4617 cut-off events. [2023-01-28 09:42:06,209 INFO L131 PetriNetUnfolder]: For 16410/16410 co-relation queries the response was YES. [2023-01-28 09:42:06,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19266 conditions, 4617 events. 2531/4617 cut-off events. For 16410/16410 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 31302 event pairs, 891 based on Foata normal form. 2/4547 useless extension candidates. Maximal degree in co-relation 19218. Up to 3072 conditions per place. [2023-01-28 09:42:06,235 INFO L137 encePairwiseOnDemand]: 320/327 looper letters, 97 selfloop transitions, 22 changer transitions 27/161 dead transitions. [2023-01-28 09:42:06,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 161 transitions, 1270 flow [2023-01-28 09:42:06,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:42:06,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:42:06,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1289 transitions. [2023-01-28 09:42:06,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4379884471627591 [2023-01-28 09:42:06,239 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1289 transitions. [2023-01-28 09:42:06,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1289 transitions. [2023-01-28 09:42:06,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:42:06,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1289 transitions. [2023-01-28 09:42:06,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 143.22222222222223) internal successors, (1289), 9 states have internal predecessors, (1289), 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 09:42:06,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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 09:42:06,247 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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 09:42:06,247 INFO L175 Difference]: Start difference. First operand has 96 places, 80 transitions, 592 flow. Second operand 9 states and 1289 transitions. [2023-01-28 09:42:06,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 161 transitions, 1270 flow [2023-01-28 09:42:06,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 161 transitions, 1221 flow, removed 18 selfloop flow, removed 5 redundant places. [2023-01-28 09:42:06,293 INFO L231 Difference]: Finished difference. Result has 101 places, 84 transitions, 664 flow [2023-01-28 09:42:06,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=664, PETRI_PLACES=101, PETRI_TRANSITIONS=84} [2023-01-28 09:42:06,294 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 56 predicate places. [2023-01-28 09:42:06,294 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 84 transitions, 664 flow [2023-01-28 09:42:06,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 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 09:42:06,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:42:06,294 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:42:06,299 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 09:42:06,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:42:06,498 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:42:06,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:42:06,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1315014560, now seen corresponding path program 8 times [2023-01-28 09:42:06,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:42:06,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328662268] [2023-01-28 09:42:06,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:42:06,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:42:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:42:06,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:42:06,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:42:06,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328662268] [2023-01-28 09:42:06,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328662268] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:42:06,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:42:06,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:42:06,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933196631] [2023-01-28 09:42:06,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:42:06,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:42:06,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:42:06,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:42:06,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:42:06,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 327 [2023-01-28 09:42:06,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 84 transitions, 664 flow. Second operand has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 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 09:42:06,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:42:06,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 327 [2023-01-28 09:42:06,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:42:07,646 INFO L130 PetriNetUnfolder]: 3793/7236 cut-off events. [2023-01-28 09:42:07,646 INFO L131 PetriNetUnfolder]: For 28790/29029 co-relation queries the response was YES. [2023-01-28 09:42:07,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29556 conditions, 7236 events. 3793/7236 cut-off events. For 28790/29029 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 53494 event pairs, 1425 based on Foata normal form. 42/7236 useless extension candidates. Maximal degree in co-relation 29508. Up to 4461 conditions per place. [2023-01-28 09:42:07,706 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 203 selfloop transitions, 18 changer transitions 10/241 dead transitions. [2023-01-28 09:42:07,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 241 transitions, 2419 flow [2023-01-28 09:42:07,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 09:42:07,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 09:42:07,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1689 transitions. [2023-01-28 09:42:07,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.469557964970809 [2023-01-28 09:42:07,710 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1689 transitions. [2023-01-28 09:42:07,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1689 transitions. [2023-01-28 09:42:07,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:42:07,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1689 transitions. [2023-01-28 09:42:07,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 153.54545454545453) internal successors, (1689), 11 states have internal predecessors, (1689), 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 09:42:07,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 327.0) internal successors, (3924), 12 states have internal predecessors, (3924), 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 09:42:07,719 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 327.0) internal successors, (3924), 12 states have internal predecessors, (3924), 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 09:42:07,719 INFO L175 Difference]: Start difference. First operand has 101 places, 84 transitions, 664 flow. Second operand 11 states and 1689 transitions. [2023-01-28 09:42:07,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 241 transitions, 2419 flow [2023-01-28 09:42:07,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 241 transitions, 2272 flow, removed 47 selfloop flow, removed 4 redundant places. [2023-01-28 09:42:07,812 INFO L231 Difference]: Finished difference. Result has 110 places, 99 transitions, 766 flow [2023-01-28 09:42:07,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=766, PETRI_PLACES=110, PETRI_TRANSITIONS=99} [2023-01-28 09:42:07,814 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 65 predicate places. [2023-01-28 09:42:07,814 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 99 transitions, 766 flow [2023-01-28 09:42:07,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 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 09:42:07,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:42:07,815 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:42:07,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 09:42:07,815 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:42:07,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:42:07,815 INFO L85 PathProgramCache]: Analyzing trace with hash 174753486, now seen corresponding path program 9 times [2023-01-28 09:42:07,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:42:07,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239431925] [2023-01-28 09:42:07,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:42:07,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:42:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:42:08,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:42:08,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:42:08,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239431925] [2023-01-28 09:42:08,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239431925] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:42:08,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739179119] [2023-01-28 09:42:08,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 09:42:08,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:42:08,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:42:08,489 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 09:42:08,517 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 09:42:08,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-28 09:42:08,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:42:08,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-28 09:42:08,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:42:08,764 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:42:08,764 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-28 09:42:08,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:42:08,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:42:08,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739179119] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:42:08,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:42:08,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2023-01-28 09:42:08,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121592101] [2023-01-28 09:42:08,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:42:08,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:42:08,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:42:08,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:42:08,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2023-01-28 09:42:08,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 327 [2023-01-28 09:42:08,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 99 transitions, 766 flow. Second operand has 8 states, 8 states have (on average 135.5) internal successors, (1084), 8 states have internal predecessors, (1084), 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 09:42:08,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:42:08,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 327 [2023-01-28 09:42:08,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:42:09,915 INFO L130 PetriNetUnfolder]: 4687/8618 cut-off events. [2023-01-28 09:42:09,915 INFO L131 PetriNetUnfolder]: For 35084/35085 co-relation queries the response was YES. [2023-01-28 09:42:09,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37088 conditions, 8618 events. 4687/8618 cut-off events. For 35084/35085 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 65816 event pairs, 897 based on Foata normal form. 5/8538 useless extension candidates. Maximal degree in co-relation 37036. Up to 4964 conditions per place. [2023-01-28 09:42:09,962 INFO L137 encePairwiseOnDemand]: 318/327 looper letters, 156 selfloop transitions, 20 changer transitions 32/232 dead transitions. [2023-01-28 09:42:09,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 232 transitions, 1992 flow [2023-01-28 09:42:09,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:42:09,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:42:09,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1306 transitions. [2023-01-28 09:42:09,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4437648657832144 [2023-01-28 09:42:09,966 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1306 transitions. [2023-01-28 09:42:09,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1306 transitions. [2023-01-28 09:42:09,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:42:09,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1306 transitions. [2023-01-28 09:42:09,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 145.11111111111111) internal successors, (1306), 9 states have internal predecessors, (1306), 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 09:42:09,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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 09:42:09,973 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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 09:42:09,973 INFO L175 Difference]: Start difference. First operand has 110 places, 99 transitions, 766 flow. Second operand 9 states and 1306 transitions. [2023-01-28 09:42:09,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 232 transitions, 1992 flow [2023-01-28 09:42:10,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 232 transitions, 1988 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-28 09:42:10,096 INFO L231 Difference]: Finished difference. Result has 122 places, 107 transitions, 931 flow [2023-01-28 09:42:10,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=931, PETRI_PLACES=122, PETRI_TRANSITIONS=107} [2023-01-28 09:42:10,097 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 77 predicate places. [2023-01-28 09:42:10,097 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 107 transitions, 931 flow [2023-01-28 09:42:10,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.5) internal successors, (1084), 8 states have internal predecessors, (1084), 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 09:42:10,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:42:10,098 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:42:10,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-28 09:42:10,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-01-28 09:42:10,303 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:42:10,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:42:10,304 INFO L85 PathProgramCache]: Analyzing trace with hash 951031568, now seen corresponding path program 10 times [2023-01-28 09:42:10,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:42:10,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614847670] [2023-01-28 09:42:10,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:42:10,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:42:10,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:42:11,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:42:11,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:42:11,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614847670] [2023-01-28 09:42:11,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614847670] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:42:11,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266787315] [2023-01-28 09:42:11,026 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 09:42:11,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:42:11,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:42:11,027 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 09:42:11,029 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 09:42:11,110 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 09:42:11,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:42:11,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 16 conjunts are in the unsatisfiable core [2023-01-28 09:42:11,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:42:11,227 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:42:11,227 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-28 09:42:11,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:42:11,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:42:11,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266787315] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:42:11,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:42:11,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2023-01-28 09:42:11,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250322912] [2023-01-28 09:42:11,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:42:11,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:42:11,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:42:11,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:42:11,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-01-28 09:42:11,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 327 [2023-01-28 09:42:11,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 107 transitions, 931 flow. Second operand has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 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 09:42:11,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:42:11,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 327 [2023-01-28 09:42:11,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:42:12,358 INFO L130 PetriNetUnfolder]: 4870/8984 cut-off events. [2023-01-28 09:42:12,358 INFO L131 PetriNetUnfolder]: For 45689/45690 co-relation queries the response was YES. [2023-01-28 09:42:12,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41457 conditions, 8984 events. 4870/8984 cut-off events. For 45689/45690 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 69241 event pairs, 1010 based on Foata normal form. 5/8904 useless extension candidates. Maximal degree in co-relation 41400. Up to 5516 conditions per place. [2023-01-28 09:42:12,423 INFO L137 encePairwiseOnDemand]: 318/327 looper letters, 181 selfloop transitions, 23 changer transitions 21/249 dead transitions. [2023-01-28 09:42:12,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 249 transitions, 2230 flow [2023-01-28 09:42:12,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 09:42:12,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 09:42:12,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1450 transitions. [2023-01-28 09:42:12,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434250764525994 [2023-01-28 09:42:12,427 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1450 transitions. [2023-01-28 09:42:12,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1450 transitions. [2023-01-28 09:42:12,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:42:12,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1450 transitions. [2023-01-28 09:42:12,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 145.0) internal successors, (1450), 10 states have internal predecessors, (1450), 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 09:42:12,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 327.0) internal successors, (3597), 11 states have internal predecessors, (3597), 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 09:42:12,434 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 327.0) internal successors, (3597), 11 states have internal predecessors, (3597), 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 09:42:12,434 INFO L175 Difference]: Start difference. First operand has 122 places, 107 transitions, 931 flow. Second operand 10 states and 1450 transitions. [2023-01-28 09:42:12,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 249 transitions, 2230 flow [2023-01-28 09:42:12,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 249 transitions, 2155 flow, removed 22 selfloop flow, removed 6 redundant places. [2023-01-28 09:42:12,644 INFO L231 Difference]: Finished difference. Result has 126 places, 111 transitions, 972 flow [2023-01-28 09:42:12,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=871, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=972, PETRI_PLACES=126, PETRI_TRANSITIONS=111} [2023-01-28 09:42:12,645 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 81 predicate places. [2023-01-28 09:42:12,646 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 111 transitions, 972 flow [2023-01-28 09:42:12,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 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 09:42:12,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:42:12,646 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:42:12,655 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 09:42:12,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:42:12,852 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:42:12,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:42:12,852 INFO L85 PathProgramCache]: Analyzing trace with hash 714877538, now seen corresponding path program 11 times [2023-01-28 09:42:12,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:42:12,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858585274] [2023-01-28 09:42:12,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:42:12,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:42:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:42:13,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:42:13,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:42:13,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858585274] [2023-01-28 09:42:13,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858585274] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:42:13,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200173302] [2023-01-28 09:42:13,757 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 09:42:13,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:42:13,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:42:13,758 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 09:42:13,761 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 09:42:13,870 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 09:42:13,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:42:13,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 22 conjunts are in the unsatisfiable core [2023-01-28 09:42:13,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:42:13,995 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:42:13,996 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-28 09:42:14,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:42:14,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:42:14,106 INFO L321 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2023-01-28 09:42:14,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2023-01-28 09:42:14,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:42:14,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200173302] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 09:42:14,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 09:42:14,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 19 [2023-01-28 09:42:14,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103439227] [2023-01-28 09:42:14,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:42:14,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:42:14,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:42:14,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:42:14,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-01-28 09:42:14,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 327 [2023-01-28 09:42:14,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 111 transitions, 972 flow. Second operand has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 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 09:42:14,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:42:14,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 327 [2023-01-28 09:42:14,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:42:15,364 INFO L130 PetriNetUnfolder]: 4760/8764 cut-off events. [2023-01-28 09:42:15,364 INFO L131 PetriNetUnfolder]: For 42042/42044 co-relation queries the response was YES. [2023-01-28 09:42:15,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40819 conditions, 8764 events. 4760/8764 cut-off events. For 42042/42044 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 66697 event pairs, 1187 based on Foata normal form. 5/8685 useless extension candidates. Maximal degree in co-relation 40761. Up to 5511 conditions per place. [2023-01-28 09:42:15,408 INFO L137 encePairwiseOnDemand]: 318/327 looper letters, 151 selfloop transitions, 22 changer transitions 29/226 dead transitions. [2023-01-28 09:42:15,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 226 transitions, 2042 flow [2023-01-28 09:42:15,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 09:42:15,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 09:42:15,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1172 transitions. [2023-01-28 09:42:15,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44801223241590216 [2023-01-28 09:42:15,411 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1172 transitions. [2023-01-28 09:42:15,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1172 transitions. [2023-01-28 09:42:15,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:42:15,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1172 transitions. [2023-01-28 09:42:15,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 146.5) internal successors, (1172), 8 states have internal predecessors, (1172), 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 09:42:15,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 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 09:42:15,418 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 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 09:42:15,418 INFO L175 Difference]: Start difference. First operand has 126 places, 111 transitions, 972 flow. Second operand 8 states and 1172 transitions. [2023-01-28 09:42:15,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 226 transitions, 2042 flow [2023-01-28 09:42:15,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 226 transitions, 1979 flow, removed 11 selfloop flow, removed 6 redundant places. [2023-01-28 09:42:15,640 INFO L231 Difference]: Finished difference. Result has 127 places, 110 transitions, 949 flow [2023-01-28 09:42:15,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=949, PETRI_PLACES=127, PETRI_TRANSITIONS=110} [2023-01-28 09:42:15,642 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 82 predicate places. [2023-01-28 09:42:15,642 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 110 transitions, 949 flow [2023-01-28 09:42:15,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 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 09:42:15,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:42:15,643 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:42:15,651 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 09:42:15,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:42:15,849 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:42:15,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:42:15,849 INFO L85 PathProgramCache]: Analyzing trace with hash -912887976, now seen corresponding path program 12 times [2023-01-28 09:42:15,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:42:15,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525329609] [2023-01-28 09:42:15,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:42:15,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:42:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:42:17,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:42:17,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:42:17,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525329609] [2023-01-28 09:42:17,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525329609] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:42:17,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22714157] [2023-01-28 09:42:17,833 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 09:42:17,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:42:17,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:42:17,841 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 09:42:17,843 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 09:42:17,960 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-01-28 09:42:17,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:42:17,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 21 conjunts are in the unsatisfiable core [2023-01-28 09:42:17,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:42:18,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 09:42:18,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 09:42:18,218 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:42:18,218 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-28 09:42:18,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:42:18,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:42:18,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22714157] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:42:18,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:42:18,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 22 [2023-01-28 09:42:18,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679842647] [2023-01-28 09:42:18,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:42:18,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:42:18,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:42:18,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:42:18,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2023-01-28 09:42:18,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 327 [2023-01-28 09:42:18,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 110 transitions, 949 flow. Second operand has 10 states, 10 states have (on average 127.8) internal successors, (1278), 10 states have internal predecessors, (1278), 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 09:42:18,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:42:18,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 327 [2023-01-28 09:42:18,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:42:19,605 INFO L130 PetriNetUnfolder]: 5023/9324 cut-off events. [2023-01-28 09:42:19,605 INFO L131 PetriNetUnfolder]: For 44834/44836 co-relation queries the response was YES. [2023-01-28 09:42:19,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43252 conditions, 9324 events. 5023/9324 cut-off events. For 44834/44836 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 72735 event pairs, 1154 based on Foata normal form. 5/9240 useless extension candidates. Maximal degree in co-relation 43194. Up to 4602 conditions per place. [2023-01-28 09:42:19,655 INFO L137 encePairwiseOnDemand]: 318/327 looper letters, 154 selfloop transitions, 25 changer transitions 34/237 dead transitions. [2023-01-28 09:42:19,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 237 transitions, 2179 flow [2023-01-28 09:42:19,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 09:42:19,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 09:42:19,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1368 transitions. [2023-01-28 09:42:19,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41834862385321103 [2023-01-28 09:42:19,659 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1368 transitions. [2023-01-28 09:42:19,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1368 transitions. [2023-01-28 09:42:19,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:42:19,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1368 transitions. [2023-01-28 09:42:19,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 136.8) internal successors, (1368), 10 states have internal predecessors, (1368), 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 09:42:19,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 327.0) internal successors, (3597), 11 states have internal predecessors, (3597), 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 09:42:19,665 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 327.0) internal successors, (3597), 11 states have internal predecessors, (3597), 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 09:42:19,665 INFO L175 Difference]: Start difference. First operand has 127 places, 110 transitions, 949 flow. Second operand 10 states and 1368 transitions. [2023-01-28 09:42:19,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 237 transitions, 2179 flow [2023-01-28 09:42:19,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 237 transitions, 2122 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-01-28 09:42:19,829 INFO L231 Difference]: Finished difference. Result has 131 places, 114 transitions, 1040 flow [2023-01-28 09:42:19,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1040, PETRI_PLACES=131, PETRI_TRANSITIONS=114} [2023-01-28 09:42:19,829 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 86 predicate places. [2023-01-28 09:42:19,829 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 114 transitions, 1040 flow [2023-01-28 09:42:19,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 127.8) internal successors, (1278), 10 states have internal predecessors, (1278), 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 09:42:19,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:42:19,830 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:42:19,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 09:42:20,030 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,SelfDestructingSolverStorable12 [2023-01-28 09:42:20,030 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:42:20,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:42:20,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1805207680, now seen corresponding path program 13 times [2023-01-28 09:42:20,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:42:20,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76045533] [2023-01-28 09:42:20,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:42:20,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:42:20,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:42:20,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:42:20,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:42:20,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76045533] [2023-01-28 09:42:20,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76045533] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:42:20,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368131596] [2023-01-28 09:42:20,778 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 09:42:20,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:42:20,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:42:20,779 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 09:42:20,782 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 09:42:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:42:20,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 29 conjunts are in the unsatisfiable core [2023-01-28 09:42:20,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:42:21,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 09:42:21,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 09:42:21,128 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:42:21,128 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-28 09:42:21,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:42:21,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:42:21,215 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_539 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_539) c_~f~0.base))) (= (select .cse0 (+ c_~f~0.offset (* c_~i~0 4))) (select .cse0 (+ (* 4 (select .cse0 (+ c_~f~0.offset (* c_~j~0 4)))) c_~f~0.offset))))) is different from false [2023-01-28 09:42:21,248 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:42:21,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 114 [2023-01-28 09:42:21,265 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:42:21,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 52 [2023-01-28 09:42:21,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:42:21,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368131596] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 09:42:21,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 09:42:21,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11, 9] total 26 [2023-01-28 09:42:21,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227505955] [2023-01-28 09:42:21,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:42:21,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:42:21,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:42:21,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:42:21,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=623, Unknown=1, NotChecked=50, Total=756 [2023-01-28 09:42:21,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 327 [2023-01-28 09:42:21,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 114 transitions, 1040 flow. Second operand has 10 states, 10 states have (on average 127.8) internal successors, (1278), 10 states have internal predecessors, (1278), 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 09:42:21,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:42:21,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 327 [2023-01-28 09:42:21,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:42:26,959 INFO L130 PetriNetUnfolder]: 5335/9820 cut-off events. [2023-01-28 09:42:26,960 INFO L131 PetriNetUnfolder]: For 53622/53624 co-relation queries the response was YES. [2023-01-28 09:42:27,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46479 conditions, 9820 events. 5335/9820 cut-off events. For 53622/53624 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 75718 event pairs, 1167 based on Foata normal form. 5/9730 useless extension candidates. Maximal degree in co-relation 46417. Up to 5625 conditions per place. [2023-01-28 09:42:27,026 INFO L137 encePairwiseOnDemand]: 309/327 looper letters, 181 selfloop transitions, 51 changer transitions 22/278 dead transitions. [2023-01-28 09:42:27,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 278 transitions, 2592 flow [2023-01-28 09:42:27,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 09:42:27,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 09:42:27,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1644 transitions. [2023-01-28 09:42:27,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41896024464831805 [2023-01-28 09:42:27,029 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1644 transitions. [2023-01-28 09:42:27,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1644 transitions. [2023-01-28 09:42:27,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:42:27,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1644 transitions. [2023-01-28 09:42:27,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 137.0) internal successors, (1644), 12 states have internal predecessors, (1644), 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 09:42:27,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 327.0) internal successors, (4251), 13 states have internal predecessors, (4251), 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 09:42:27,036 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 327.0) internal successors, (4251), 13 states have internal predecessors, (4251), 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 09:42:27,036 INFO L175 Difference]: Start difference. First operand has 131 places, 114 transitions, 1040 flow. Second operand 12 states and 1644 transitions. [2023-01-28 09:42:27,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 278 transitions, 2592 flow [2023-01-28 09:42:27,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 278 transitions, 2525 flow, removed 21 selfloop flow, removed 6 redundant places. [2023-01-28 09:42:27,339 INFO L231 Difference]: Finished difference. Result has 137 places, 141 transitions, 1413 flow [2023-01-28 09:42:27,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1413, PETRI_PLACES=137, PETRI_TRANSITIONS=141} [2023-01-28 09:42:27,339 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 92 predicate places. [2023-01-28 09:42:27,340 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 141 transitions, 1413 flow [2023-01-28 09:42:27,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 127.8) internal successors, (1278), 10 states have internal predecessors, (1278), 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 09:42:27,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:42:27,340 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:42:27,346 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 09:42:27,541 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,SelfDestructingSolverStorable13 [2023-01-28 09:42:27,541 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:42:27,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:42:27,541 INFO L85 PathProgramCache]: Analyzing trace with hash -834450010, now seen corresponding path program 14 times [2023-01-28 09:42:27,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:42:27,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161993121] [2023-01-28 09:42:27,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:42:27,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:42:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:42:28,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:42:28,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:42:28,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161993121] [2023-01-28 09:42:28,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161993121] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:42:28,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666949657] [2023-01-28 09:42:28,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 09:42:28,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:42:28,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:42:28,348 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:42:28,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-28 09:42:28,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 09:42:28,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:42:28,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 23 conjunts are in the unsatisfiable core [2023-01-28 09:42:28,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:42:28,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 09:42:28,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 09:42:28,759 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:42:28,759 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-28 09:42:28,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:42:28,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:42:28,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666949657] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:42:28,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:42:28,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 19 [2023-01-28 09:42:28,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837882054] [2023-01-28 09:42:28,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:42:28,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:42:28,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:42:28,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:42:28,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2023-01-28 09:42:28,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 327 [2023-01-28 09:42:28,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 141 transitions, 1413 flow. Second operand has 10 states, 10 states have (on average 127.8) internal successors, (1278), 10 states have internal predecessors, (1278), 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 09:42:28,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:42:28,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 327 [2023-01-28 09:42:28,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:42:29,967 INFO L130 PetriNetUnfolder]: 5231/9594 cut-off events. [2023-01-28 09:42:29,968 INFO L131 PetriNetUnfolder]: For 60246/60376 co-relation queries the response was YES. [2023-01-28 09:42:30,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51492 conditions, 9594 events. 5231/9594 cut-off events. For 60246/60376 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 73944 event pairs, 1187 based on Foata normal form. 9/9513 useless extension candidates. Maximal degree in co-relation 51429. Up to 5630 conditions per place. [2023-01-28 09:42:30,141 INFO L137 encePairwiseOnDemand]: 318/327 looper letters, 134 selfloop transitions, 25 changer transitions 71/254 dead transitions. [2023-01-28 09:42:30,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 254 transitions, 2673 flow [2023-01-28 09:42:30,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:42:30,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:42:30,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1241 transitions. [2023-01-28 09:42:30,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4216785592932382 [2023-01-28 09:42:30,143 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1241 transitions. [2023-01-28 09:42:30,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1241 transitions. [2023-01-28 09:42:30,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:42:30,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1241 transitions. [2023-01-28 09:42:30,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 137.88888888888889) internal successors, (1241), 9 states have internal predecessors, (1241), 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 09:42:30,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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 09:42:30,148 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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 09:42:30,148 INFO L175 Difference]: Start difference. First operand has 137 places, 141 transitions, 1413 flow. Second operand 9 states and 1241 transitions. [2023-01-28 09:42:30,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 254 transitions, 2673 flow [2023-01-28 09:42:30,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 254 transitions, 2590 flow, removed 14 selfloop flow, removed 7 redundant places. [2023-01-28 09:42:30,424 INFO L231 Difference]: Finished difference. Result has 138 places, 124 transitions, 1227 flow [2023-01-28 09:42:30,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=1330, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1227, PETRI_PLACES=138, PETRI_TRANSITIONS=124} [2023-01-28 09:42:30,424 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 93 predicate places. [2023-01-28 09:42:30,425 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 124 transitions, 1227 flow [2023-01-28 09:42:30,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 127.8) internal successors, (1278), 10 states have internal predecessors, (1278), 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 09:42:30,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:42:30,425 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:42:30,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-28 09:42:30,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-28 09:42:30,633 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:42:30,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:42:30,633 INFO L85 PathProgramCache]: Analyzing trace with hash -961724026, now seen corresponding path program 15 times [2023-01-28 09:42:30,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:42:30,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375872872] [2023-01-28 09:42:30,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:42:30,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:42:30,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:42:30,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:42:30,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:42:30,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375872872] [2023-01-28 09:42:30,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375872872] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:42:30,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:42:30,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:42:30,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012229519] [2023-01-28 09:42:30,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:42:30,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:42:30,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:42:30,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:42:30,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:42:30,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 327 [2023-01-28 09:42:30,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 124 transitions, 1227 flow. Second operand has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 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 09:42:30,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:42:30,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 327 [2023-01-28 09:42:30,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:42:32,002 INFO L130 PetriNetUnfolder]: 5016/9661 cut-off events. [2023-01-28 09:42:32,002 INFO L131 PetriNetUnfolder]: For 63803/63935 co-relation queries the response was YES. [2023-01-28 09:42:32,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50773 conditions, 9661 events. 5016/9661 cut-off events. For 63803/63935 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 76479 event pairs, 2222 based on Foata normal form. 46/9681 useless extension candidates. Maximal degree in co-relation 50710. Up to 6477 conditions per place. [2023-01-28 09:42:32,060 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 232 selfloop transitions, 17 changer transitions 44/303 dead transitions. [2023-01-28 09:42:32,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 303 transitions, 3773 flow [2023-01-28 09:42:32,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 09:42:32,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 09:42:32,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1684 transitions. [2023-01-28 09:42:32,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46816791770920213 [2023-01-28 09:42:32,062 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1684 transitions. [2023-01-28 09:42:32,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1684 transitions. [2023-01-28 09:42:32,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:42:32,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1684 transitions. [2023-01-28 09:42:32,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 153.0909090909091) internal successors, (1684), 11 states have internal predecessors, (1684), 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 09:42:32,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 327.0) internal successors, (3924), 12 states have internal predecessors, (3924), 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 09:42:32,068 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 327.0) internal successors, (3924), 12 states have internal predecessors, (3924), 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 09:42:32,068 INFO L175 Difference]: Start difference. First operand has 138 places, 124 transitions, 1227 flow. Second operand 11 states and 1684 transitions. [2023-01-28 09:42:32,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 303 transitions, 3773 flow [2023-01-28 09:42:32,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 303 transitions, 3592 flow, removed 15 selfloop flow, removed 7 redundant places. [2023-01-28 09:42:32,294 INFO L231 Difference]: Finished difference. Result has 139 places, 122 transitions, 1195 flow [2023-01-28 09:42:32,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1195, PETRI_PLACES=139, PETRI_TRANSITIONS=122} [2023-01-28 09:42:32,295 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 94 predicate places. [2023-01-28 09:42:32,295 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 122 transitions, 1195 flow [2023-01-28 09:42:32,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 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 09:42:32,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:42:32,295 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:42:32,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 09:42:32,295 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:42:32,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:42:32,296 INFO L85 PathProgramCache]: Analyzing trace with hash -135768370, now seen corresponding path program 16 times [2023-01-28 09:42:32,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:42:32,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842864125] [2023-01-28 09:42:32,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:42:32,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:42:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:42:32,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:42:32,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:42:32,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842864125] [2023-01-28 09:42:32,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842864125] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:42:32,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:42:32,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:42:32,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578744506] [2023-01-28 09:42:32,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:42:32,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:42:32,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:42:32,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:42:32,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:42:32,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 327 [2023-01-28 09:42:32,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 122 transitions, 1195 flow. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 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 09:42:32,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:42:32,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 327 [2023-01-28 09:42:32,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:42:33,141 INFO L130 PetriNetUnfolder]: 3926/7891 cut-off events. [2023-01-28 09:42:33,141 INFO L131 PetriNetUnfolder]: For 47363/47546 co-relation queries the response was YES. [2023-01-28 09:42:33,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39616 conditions, 7891 events. 3926/7891 cut-off events. For 47363/47546 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 62572 event pairs, 3218 based on Foata normal form. 34/7858 useless extension candidates. Maximal degree in co-relation 39550. Up to 7195 conditions per place. [2023-01-28 09:42:33,206 INFO L137 encePairwiseOnDemand]: 324/327 looper letters, 104 selfloop transitions, 2 changer transitions 10/142 dead transitions. [2023-01-28 09:42:33,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 142 transitions, 1595 flow [2023-01-28 09:42:33,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:42:33,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:42:33,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 495 transitions. [2023-01-28 09:42:33,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045871559633027 [2023-01-28 09:42:33,207 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 495 transitions. [2023-01-28 09:42:33,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 495 transitions. [2023-01-28 09:42:33,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:42:33,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 495 transitions. [2023-01-28 09:42:33,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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 09:42:33,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 09:42:33,209 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 09:42:33,209 INFO L175 Difference]: Start difference. First operand has 139 places, 122 transitions, 1195 flow. Second operand 3 states and 495 transitions. [2023-01-28 09:42:33,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 142 transitions, 1595 flow [2023-01-28 09:42:33,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 142 transitions, 1560 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-01-28 09:42:33,375 INFO L231 Difference]: Finished difference. Result has 135 places, 122 transitions, 1168 flow [2023-01-28 09:42:33,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=1160, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1168, PETRI_PLACES=135, PETRI_TRANSITIONS=122} [2023-01-28 09:42:33,376 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 90 predicate places. [2023-01-28 09:42:33,376 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 122 transitions, 1168 flow [2023-01-28 09:42:33,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 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 09:42:33,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:42:33,376 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:42:33,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-28 09:42:33,377 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:42:33,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:42:33,377 INFO L85 PathProgramCache]: Analyzing trace with hash 2009525970, now seen corresponding path program 17 times [2023-01-28 09:42:33,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:42:33,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601158242] [2023-01-28 09:42:33,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:42:33,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:42:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:42:33,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:42:33,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:42:33,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601158242] [2023-01-28 09:42:33,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601158242] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:42:33,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:42:33,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:42:33,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418676318] [2023-01-28 09:42:33,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:42:33,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:42:33,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:42:33,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:42:33,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:42:33,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 327 [2023-01-28 09:42:33,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 122 transitions, 1168 flow. Second operand has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 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 09:42:33,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:42:33,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 327 [2023-01-28 09:42:33,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:42:34,502 INFO L130 PetriNetUnfolder]: 3098/6118 cut-off events. [2023-01-28 09:42:34,502 INFO L131 PetriNetUnfolder]: For 31628/31718 co-relation queries the response was YES. [2023-01-28 09:42:34,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29747 conditions, 6118 events. 3098/6118 cut-off events. For 31628/31718 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 45181 event pairs, 1653 based on Foata normal form. 38/6136 useless extension candidates. Maximal degree in co-relation 29683. Up to 5508 conditions per place. [2023-01-28 09:42:34,531 INFO L137 encePairwiseOnDemand]: 320/327 looper letters, 108 selfloop transitions, 7 changer transitions 38/163 dead transitions. [2023-01-28 09:42:34,531 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 163 transitions, 1705 flow [2023-01-28 09:42:34,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:42:34,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:42:34,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1359 transitions. [2023-01-28 09:42:34,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4617737003058104 [2023-01-28 09:42:34,533 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1359 transitions. [2023-01-28 09:42:34,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1359 transitions. [2023-01-28 09:42:34,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:42:34,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1359 transitions. [2023-01-28 09:42:34,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 151.0) internal successors, (1359), 9 states have internal predecessors, (1359), 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 09:42:34,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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 09:42:34,537 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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 09:42:34,537 INFO L175 Difference]: Start difference. First operand has 135 places, 122 transitions, 1168 flow. Second operand 9 states and 1359 transitions. [2023-01-28 09:42:34,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 163 transitions, 1705 flow [2023-01-28 09:42:34,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 163 transitions, 1682 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-01-28 09:42:34,640 INFO L231 Difference]: Finished difference. Result has 137 places, 112 transitions, 1060 flow [2023-01-28 09:42:34,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1060, PETRI_PLACES=137, PETRI_TRANSITIONS=112} [2023-01-28 09:42:34,640 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 92 predicate places. [2023-01-28 09:42:34,640 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 112 transitions, 1060 flow [2023-01-28 09:42:34,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 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 09:42:34,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:42:34,641 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:42:34,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-28 09:42:34,642 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:42:34,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:42:34,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1449461894, now seen corresponding path program 18 times [2023-01-28 09:42:34,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:42:34,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908474346] [2023-01-28 09:42:34,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:42:34,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:42:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:42:34,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:42:34,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:42:34,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908474346] [2023-01-28 09:42:34,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908474346] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:42:34,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:42:34,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:42:34,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083883933] [2023-01-28 09:42:34,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:42:34,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:42:34,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:42:34,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:42:34,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:42:34,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 327 [2023-01-28 09:42:34,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 112 transitions, 1060 flow. Second operand has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 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 09:42:34,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:42:34,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 327 [2023-01-28 09:42:34,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:42:35,347 INFO L130 PetriNetUnfolder]: 2113/4333 cut-off events. [2023-01-28 09:42:35,347 INFO L131 PetriNetUnfolder]: For 21966/22018 co-relation queries the response was YES. [2023-01-28 09:42:35,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20630 conditions, 4333 events. 2113/4333 cut-off events. For 21966/22018 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 30939 event pairs, 636 based on Foata normal form. 45/4366 useless extension candidates. Maximal degree in co-relation 20567. Up to 1861 conditions per place. [2023-01-28 09:42:35,371 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 170 selfloop transitions, 29 changer transitions 21/230 dead transitions. [2023-01-28 09:42:35,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 230 transitions, 2603 flow [2023-01-28 09:42:35,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:42:35,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:42:35,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1386 transitions. [2023-01-28 09:42:35,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4709480122324159 [2023-01-28 09:42:35,373 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1386 transitions. [2023-01-28 09:42:35,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1386 transitions. [2023-01-28 09:42:35,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:42:35,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1386 transitions. [2023-01-28 09:42:35,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 154.0) internal successors, (1386), 9 states have internal predecessors, (1386), 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 09:42:35,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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 09:42:35,377 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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 09:42:35,377 INFO L175 Difference]: Start difference. First operand has 137 places, 112 transitions, 1060 flow. Second operand 9 states and 1386 transitions. [2023-01-28 09:42:35,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 230 transitions, 2603 flow [2023-01-28 09:42:35,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 230 transitions, 2577 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-01-28 09:42:35,426 INFO L231 Difference]: Finished difference. Result has 135 places, 114 transitions, 1148 flow [2023-01-28 09:42:35,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1148, PETRI_PLACES=135, PETRI_TRANSITIONS=114} [2023-01-28 09:42:35,426 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 90 predicate places. [2023-01-28 09:42:35,426 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 114 transitions, 1148 flow [2023-01-28 09:42:35,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 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 09:42:35,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:42:35,427 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:42:35,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-28 09:42:35,427 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:42:35,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:42:35,427 INFO L85 PathProgramCache]: Analyzing trace with hash -296850826, now seen corresponding path program 19 times [2023-01-28 09:42:35,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:42:35,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268114346] [2023-01-28 09:42:35,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:42:35,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:42:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:42:35,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:42:35,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:42:35,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268114346] [2023-01-28 09:42:35,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268114346] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:42:35,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:42:35,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:42:35,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582129564] [2023-01-28 09:42:35,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:42:35,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:42:35,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:42:35,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:42:35,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:42:35,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 327 [2023-01-28 09:42:35,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 114 transitions, 1148 flow. Second operand has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 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 09:42:35,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:42:35,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 327 [2023-01-28 09:42:35,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:42:35,900 INFO L130 PetriNetUnfolder]: 1153/2403 cut-off events. [2023-01-28 09:42:35,900 INFO L131 PetriNetUnfolder]: For 11915/11927 co-relation queries the response was YES. [2023-01-28 09:42:35,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10899 conditions, 2403 events. 1153/2403 cut-off events. For 11915/11927 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 15952 event pairs, 658 based on Foata normal form. 43/2439 useless extension candidates. Maximal degree in co-relation 10851. Up to 1860 conditions per place. [2023-01-28 09:42:35,912 INFO L137 encePairwiseOnDemand]: 320/327 looper letters, 59 selfloop transitions, 4 changer transitions 49/120 dead transitions. [2023-01-28 09:42:35,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 120 transitions, 1180 flow [2023-01-28 09:42:35,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:42:35,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:42:35,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1064 transitions. [2023-01-28 09:42:35,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648318042813456 [2023-01-28 09:42:35,913 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1064 transitions. [2023-01-28 09:42:35,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1064 transitions. [2023-01-28 09:42:35,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:42:35,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1064 transitions. [2023-01-28 09:42:35,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 152.0) internal successors, (1064), 7 states have internal predecessors, (1064), 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 09:42:35,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 327.0) internal successors, (2616), 8 states have internal predecessors, (2616), 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 09:42:35,916 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 327.0) internal successors, (2616), 8 states have internal predecessors, (2616), 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 09:42:35,916 INFO L175 Difference]: Start difference. First operand has 135 places, 114 transitions, 1148 flow. Second operand 7 states and 1064 transitions. [2023-01-28 09:42:35,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 120 transitions, 1180 flow [2023-01-28 09:42:35,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 120 transitions, 1060 flow, removed 30 selfloop flow, removed 15 redundant places. [2023-01-28 09:42:35,940 INFO L231 Difference]: Finished difference. Result has 121 places, 64 transitions, 453 flow [2023-01-28 09:42:35,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=453, PETRI_PLACES=121, PETRI_TRANSITIONS=64} [2023-01-28 09:42:35,940 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 76 predicate places. [2023-01-28 09:42:35,940 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 64 transitions, 453 flow [2023-01-28 09:42:35,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 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 09:42:35,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:42:35,941 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:42:35,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-01-28 09:42:35,941 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:42:35,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:42:35,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1101595256, now seen corresponding path program 20 times [2023-01-28 09:42:35,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:42:35,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550566210] [2023-01-28 09:42:35,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:42:35,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:42:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:42:37,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:42:37,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:42:37,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550566210] [2023-01-28 09:42:37,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550566210] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:42:37,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047338781] [2023-01-28 09:42:37,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 09:42:37,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:42:37,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:42:37,241 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:42:37,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-28 09:42:37,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 09:42:37,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:42:37,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-28 09:42:37,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:42:37,575 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:42:37,576 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-28 09:42:37,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:42:37,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:42:37,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047338781] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:42:37,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:42:37,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2023-01-28 09:42:37,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056275496] [2023-01-28 09:42:37,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:42:37,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:42:37,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:42:37,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:42:37,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-01-28 09:42:37,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 327 [2023-01-28 09:42:37,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 64 transitions, 453 flow. Second operand has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 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 09:42:37,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:42:37,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 327 [2023-01-28 09:42:37,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:42:37,956 INFO L130 PetriNetUnfolder]: 576/1198 cut-off events. [2023-01-28 09:42:37,956 INFO L131 PetriNetUnfolder]: For 3524/3612 co-relation queries the response was YES. [2023-01-28 09:42:37,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4798 conditions, 1198 events. 576/1198 cut-off events. For 3524/3612 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7048 event pairs, 299 based on Foata normal form. 4/1148 useless extension candidates. Maximal degree in co-relation 4759. Up to 579 conditions per place. [2023-01-28 09:42:37,962 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 83 selfloop transitions, 9 changer transitions 16/126 dead transitions. [2023-01-28 09:42:37,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 126 transitions, 1030 flow [2023-01-28 09:42:37,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:42:37,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:42:37,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1277 transitions. [2023-01-28 09:42:37,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43391097519537886 [2023-01-28 09:42:37,963 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1277 transitions. [2023-01-28 09:42:37,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1277 transitions. [2023-01-28 09:42:37,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:42:37,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1277 transitions. [2023-01-28 09:42:37,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 141.88888888888889) internal successors, (1277), 9 states have internal predecessors, (1277), 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 09:42:37,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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 09:42:37,966 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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 09:42:37,966 INFO L175 Difference]: Start difference. First operand has 121 places, 64 transitions, 453 flow. Second operand 9 states and 1277 transitions. [2023-01-28 09:42:37,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 126 transitions, 1030 flow [2023-01-28 09:42:37,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 126 transitions, 966 flow, removed 24 selfloop flow, removed 14 redundant places. [2023-01-28 09:42:37,973 INFO L231 Difference]: Finished difference. Result has 105 places, 68 transitions, 478 flow [2023-01-28 09:42:37,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=478, PETRI_PLACES=105, PETRI_TRANSITIONS=68} [2023-01-28 09:42:37,973 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 60 predicate places. [2023-01-28 09:42:37,973 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 68 transitions, 478 flow [2023-01-28 09:42:37,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 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 09:42:37,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:42:37,973 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:42:37,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-28 09:42:38,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-01-28 09:42:38,174 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:42:38,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:42:38,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1727604590, now seen corresponding path program 21 times [2023-01-28 09:42:38,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:42:38,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241760398] [2023-01-28 09:42:38,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:42:38,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:42:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:42:38,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:42:38,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:42:38,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241760398] [2023-01-28 09:42:38,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241760398] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:42:38,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882671984] [2023-01-28 09:42:38,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 09:42:38,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:42:38,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:42:38,769 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:42:38,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-28 09:42:38,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-28 09:42:38,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:42:38,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 16 conjunts are in the unsatisfiable core [2023-01-28 09:42:38,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:42:38,988 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:42:38,989 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-28 09:42:38,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:42:38,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:42:38,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882671984] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:42:38,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:42:38,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 16 [2023-01-28 09:42:38,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114320545] [2023-01-28 09:42:38,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:42:38,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:42:38,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:42:38,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:42:38,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-01-28 09:42:38,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 327 [2023-01-28 09:42:39,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 68 transitions, 478 flow. Second operand has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 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 09:42:39,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:42:39,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 327 [2023-01-28 09:42:39,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:42:39,359 INFO L130 PetriNetUnfolder]: 598/1266 cut-off events. [2023-01-28 09:42:39,359 INFO L131 PetriNetUnfolder]: For 3230/3318 co-relation queries the response was YES. [2023-01-28 09:42:39,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5101 conditions, 1266 events. 598/1266 cut-off events. For 3230/3318 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7519 event pairs, 319 based on Foata normal form. 4/1216 useless extension candidates. Maximal degree in co-relation 5068. Up to 651 conditions per place. [2023-01-28 09:42:39,364 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 99 selfloop transitions, 12 changer transitions 11/140 dead transitions. [2023-01-28 09:42:39,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 140 transitions, 1110 flow [2023-01-28 09:42:39,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 09:42:39,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 09:42:39,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1423 transitions. [2023-01-28 09:42:39,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43516819571865445 [2023-01-28 09:42:39,365 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1423 transitions. [2023-01-28 09:42:39,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1423 transitions. [2023-01-28 09:42:39,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:42:39,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1423 transitions. [2023-01-28 09:42:39,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 142.3) internal successors, (1423), 10 states have internal predecessors, (1423), 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 09:42:39,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 327.0) internal successors, (3597), 11 states have internal predecessors, (3597), 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 09:42:39,369 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 327.0) internal successors, (3597), 11 states have internal predecessors, (3597), 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 09:42:39,369 INFO L175 Difference]: Start difference. First operand has 105 places, 68 transitions, 478 flow. Second operand 10 states and 1423 transitions. [2023-01-28 09:42:39,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 140 transitions, 1110 flow [2023-01-28 09:42:39,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 140 transitions, 1071 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-01-28 09:42:39,377 INFO L231 Difference]: Finished difference. Result has 109 places, 71 transitions, 508 flow [2023-01-28 09:42:39,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=508, PETRI_PLACES=109, PETRI_TRANSITIONS=71} [2023-01-28 09:42:39,377 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 64 predicate places. [2023-01-28 09:42:39,377 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 71 transitions, 508 flow [2023-01-28 09:42:39,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 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 09:42:39,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:42:39,378 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:42:39,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-01-28 09:42:39,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-01-28 09:42:39,583 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:42:39,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:42:39,584 INFO L85 PathProgramCache]: Analyzing trace with hash -261863682, now seen corresponding path program 22 times [2023-01-28 09:42:39,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:42:39,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401298870] [2023-01-28 09:42:39,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:42:39,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:42:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:42:40,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:42:40,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:42:40,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401298870] [2023-01-28 09:42:40,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401298870] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:42:40,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879994608] [2023-01-28 09:42:40,235 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 09:42:40,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:42:40,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:42:40,237 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:42:40,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-28 09:42:40,340 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 09:42:40,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:42:40,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 16 conjunts are in the unsatisfiable core [2023-01-28 09:42:40,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:42:40,446 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:42:40,446 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-28 09:42:40,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:42:40,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:42:40,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879994608] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:42:40,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:42:40,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2023-01-28 09:42:40,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866525499] [2023-01-28 09:42:40,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:42:40,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:42:40,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:42:40,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:42:40,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-01-28 09:42:40,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 327 [2023-01-28 09:42:40,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 71 transitions, 508 flow. Second operand has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 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 09:42:40,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:42:40,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 327 [2023-01-28 09:42:40,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:42:40,748 INFO L130 PetriNetUnfolder]: 590/1230 cut-off events. [2023-01-28 09:42:40,748 INFO L131 PetriNetUnfolder]: For 3138/3226 co-relation queries the response was YES. [2023-01-28 09:42:40,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5081 conditions, 1230 events. 590/1230 cut-off events. For 3138/3226 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7235 event pairs, 325 based on Foata normal form. 4/1180 useless extension candidates. Maximal degree in co-relation 5047. Up to 651 conditions per place. [2023-01-28 09:42:40,753 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 73 selfloop transitions, 10 changer transitions 26/127 dead transitions. [2023-01-28 09:42:40,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 127 transitions, 1029 flow [2023-01-28 09:42:40,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 09:42:40,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 09:42:40,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1147 transitions. [2023-01-28 09:42:40,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43845565749235477 [2023-01-28 09:42:40,754 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1147 transitions. [2023-01-28 09:42:40,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1147 transitions. [2023-01-28 09:42:40,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:42:40,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1147 transitions. [2023-01-28 09:42:40,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 143.375) internal successors, (1147), 8 states have internal predecessors, (1147), 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 09:42:40,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 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 09:42:40,757 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 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 09:42:40,757 INFO L175 Difference]: Start difference. First operand has 109 places, 71 transitions, 508 flow. Second operand 8 states and 1147 transitions. [2023-01-28 09:42:40,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 127 transitions, 1029 flow [2023-01-28 09:42:40,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 127 transitions, 994 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-01-28 09:42:40,762 INFO L231 Difference]: Finished difference. Result has 110 places, 69 transitions, 482 flow [2023-01-28 09:42:40,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=482, PETRI_PLACES=110, PETRI_TRANSITIONS=69} [2023-01-28 09:42:40,762 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 65 predicate places. [2023-01-28 09:42:40,762 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 69 transitions, 482 flow [2023-01-28 09:42:40,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 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 09:42:40,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:42:40,763 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:42:40,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-01-28 09:42:40,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-01-28 09:42:40,968 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:42:40,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:42:40,968 INFO L85 PathProgramCache]: Analyzing trace with hash -537786768, now seen corresponding path program 23 times [2023-01-28 09:42:40,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:42:40,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403952120] [2023-01-28 09:42:40,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:42:40,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:42:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:42:41,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:42:41,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:42:41,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403952120] [2023-01-28 09:42:41,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403952120] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:42:41,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790149451] [2023-01-28 09:42:41,725 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 09:42:41,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:42:41,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:42:41,727 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:42:41,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-01-28 09:42:41,827 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 09:42:41,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:42:41,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 27 conjunts are in the unsatisfiable core [2023-01-28 09:42:41,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:42:41,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 09:42:41,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 09:42:42,040 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:42:42,040 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-28 09:42:42,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:42:42,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:42:42,118 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_901 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_901) c_~f~0.base))) (= (select .cse0 (+ (* (select .cse0 (+ c_~f~0.offset (* c_~j~0 4))) 4) c_~f~0.offset)) (select .cse0 (+ c_~f~0.offset (* c_~i~0 4)))))) is different from false [2023-01-28 09:42:42,156 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:42:42,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 114 [2023-01-28 09:42:42,176 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:42:42,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 52 [2023-01-28 09:42:42,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:42:42,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790149451] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 09:42:42,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 09:42:42,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11, 9] total 25 [2023-01-28 09:42:42,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018941687] [2023-01-28 09:42:42,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:42:42,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:42:42,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:42:42,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:42:42,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=575, Unknown=1, NotChecked=48, Total=702 [2023-01-28 09:42:42,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 327 [2023-01-28 09:42:42,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 69 transitions, 482 flow. Second operand has 10 states, 10 states have (on average 127.8) internal successors, (1278), 10 states have internal predecessors, (1278), 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 09:42:42,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:42:42,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 327 [2023-01-28 09:42:42,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:42:44,735 INFO L130 PetriNetUnfolder]: 524/1142 cut-off events. [2023-01-28 09:42:44,736 INFO L131 PetriNetUnfolder]: For 2591/2679 co-relation queries the response was YES. [2023-01-28 09:42:44,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4569 conditions, 1142 events. 524/1142 cut-off events. For 2591/2679 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6722 event pairs, 334 based on Foata normal form. 4/1092 useless extension candidates. Maximal degree in co-relation 4535. Up to 554 conditions per place. [2023-01-28 09:42:44,740 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 58 selfloop transitions, 9 changer transitions 27/112 dead transitions. [2023-01-28 09:42:44,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 112 transitions, 907 flow [2023-01-28 09:42:44,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 09:42:44,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 09:42:44,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1077 transitions. [2023-01-28 09:42:44,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.411697247706422 [2023-01-28 09:42:44,743 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1077 transitions. [2023-01-28 09:42:44,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1077 transitions. [2023-01-28 09:42:44,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:42:44,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1077 transitions. [2023-01-28 09:42:44,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 134.625) internal successors, (1077), 8 states have internal predecessors, (1077), 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 09:42:44,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 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 09:42:44,746 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 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 09:42:44,746 INFO L175 Difference]: Start difference. First operand has 110 places, 69 transitions, 482 flow. Second operand 8 states and 1077 transitions. [2023-01-28 09:42:44,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 112 transitions, 907 flow [2023-01-28 09:42:44,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 112 transitions, 874 flow, removed 3 selfloop flow, removed 9 redundant places. [2023-01-28 09:42:44,751 INFO L231 Difference]: Finished difference. Result has 109 places, 69 transitions, 492 flow [2023-01-28 09:42:44,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=492, PETRI_PLACES=109, PETRI_TRANSITIONS=69} [2023-01-28 09:42:44,751 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 64 predicate places. [2023-01-28 09:42:44,751 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 69 transitions, 492 flow [2023-01-28 09:42:44,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 127.8) internal successors, (1278), 10 states have internal predecessors, (1278), 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 09:42:44,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:42:44,752 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:42:44,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-01-28 09:42:44,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:42:44,952 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:42:44,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:42:44,953 INFO L85 PathProgramCache]: Analyzing trace with hash -709821156, now seen corresponding path program 24 times [2023-01-28 09:42:44,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:42:44,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377599843] [2023-01-28 09:42:44,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:42:44,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:42:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:42:45,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:42:45,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:42:45,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377599843] [2023-01-28 09:42:45,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377599843] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:42:45,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968995078] [2023-01-28 09:42:45,615 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 09:42:45,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:42:45,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:42:45,617 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:42:45,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-28 09:42:45,768 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-01-28 09:42:45,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:42:45,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 21 conjunts are in the unsatisfiable core [2023-01-28 09:42:45,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:42:45,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 09:42:45,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 09:42:45,978 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:42:45,978 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-28 09:42:45,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:42:45,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:42:45,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968995078] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:42:45,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:42:45,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2023-01-28 09:42:45,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967841182] [2023-01-28 09:42:45,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:42:45,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:42:45,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:42:45,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:42:45,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2023-01-28 09:42:45,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 327 [2023-01-28 09:42:45,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 69 transitions, 492 flow. Second operand has 10 states, 10 states have (on average 127.8) internal successors, (1278), 10 states have internal predecessors, (1278), 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 09:42:45,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:42:45,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 327 [2023-01-28 09:42:45,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:42:46,815 INFO L130 PetriNetUnfolder]: 476/1040 cut-off events. [2023-01-28 09:42:46,815 INFO L131 PetriNetUnfolder]: For 2315/2403 co-relation queries the response was YES. [2023-01-28 09:42:46,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4184 conditions, 1040 events. 476/1040 cut-off events. For 2315/2403 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6015 event pairs, 334 based on Foata normal form. 4/990 useless extension candidates. Maximal degree in co-relation 4149. Up to 487 conditions per place. [2023-01-28 09:42:46,820 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 54 selfloop transitions, 8 changer transitions 22/102 dead transitions. [2023-01-28 09:42:46,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 102 transitions, 838 flow [2023-01-28 09:42:46,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:42:46,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:42:46,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1193 transitions. [2023-01-28 09:42:46,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4053686714237173 [2023-01-28 09:42:46,821 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1193 transitions. [2023-01-28 09:42:46,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1193 transitions. [2023-01-28 09:42:46,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:42:46,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1193 transitions. [2023-01-28 09:42:46,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 132.55555555555554) internal successors, (1193), 9 states have internal predecessors, (1193), 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 09:42:46,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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 09:42:46,824 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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 09:42:46,824 INFO L175 Difference]: Start difference. First operand has 109 places, 69 transitions, 492 flow. Second operand 9 states and 1193 transitions. [2023-01-28 09:42:46,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 102 transitions, 838 flow [2023-01-28 09:42:46,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 102 transitions, 806 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-01-28 09:42:46,829 INFO L231 Difference]: Finished difference. Result has 110 places, 68 transitions, 476 flow [2023-01-28 09:42:46,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=476, PETRI_PLACES=110, PETRI_TRANSITIONS=68} [2023-01-28 09:42:46,829 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 65 predicate places. [2023-01-28 09:42:46,829 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 68 transitions, 476 flow [2023-01-28 09:42:46,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 127.8) internal successors, (1278), 10 states have internal predecessors, (1278), 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 09:42:46,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:42:46,829 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:42:46,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-01-28 09:42:47,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:42:47,030 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:42:47,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:42:47,030 INFO L85 PathProgramCache]: Analyzing trace with hash -355322796, now seen corresponding path program 25 times [2023-01-28 09:42:47,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:42:47,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90446703] [2023-01-28 09:42:47,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:42:47,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:42:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:42:47,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:42:47,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:42:47,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90446703] [2023-01-28 09:42:47,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90446703] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:42:47,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643456899] [2023-01-28 09:42:47,594 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 09:42:47,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:42:47,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:42:47,595 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:42:47,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-28 09:42:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:42:47,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 40 conjunts are in the unsatisfiable core [2023-01-28 09:42:47,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:42:47,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 09:42:47,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-01-28 09:42:48,108 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:42:48,109 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 22 [2023-01-28 09:42:48,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:42:48,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:42:48,265 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:42:48,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 114 [2023-01-28 09:42:48,280 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:42:48,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 48 [2023-01-28 09:42:48,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:42:48,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643456899] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:42:48,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:42:48,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2023-01-28 09:42:48,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869526666] [2023-01-28 09:42:48,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:42:48,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-28 09:42:48,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:42:48,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-28 09:42:48,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=771, Unknown=5, NotChecked=0, Total=870 [2023-01-28 09:42:48,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 327 [2023-01-28 09:42:48,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 68 transitions, 476 flow. Second operand has 30 states, 30 states have (on average 115.3) internal successors, (3459), 30 states have internal predecessors, (3459), 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 09:42:48,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:42:48,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 327 [2023-01-28 09:42:48,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:42:51,949 INFO L130 PetriNetUnfolder]: 1404/3012 cut-off events. [2023-01-28 09:42:51,949 INFO L131 PetriNetUnfolder]: For 6335/6585 co-relation queries the response was YES. [2023-01-28 09:42:51,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11864 conditions, 3012 events. 1404/3012 cut-off events. For 6335/6585 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 22357 event pairs, 1034 based on Foata normal form. 10/2862 useless extension candidates. Maximal degree in co-relation 11830. Up to 1258 conditions per place. [2023-01-28 09:42:51,967 INFO L137 encePairwiseOnDemand]: 318/327 looper letters, 107 selfloop transitions, 16 changer transitions 93/234 dead transitions. [2023-01-28 09:42:51,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 234 transitions, 1920 flow [2023-01-28 09:42:51,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 09:42:51,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 09:42:51,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2552 transitions. [2023-01-28 09:42:51,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37163244502694043 [2023-01-28 09:42:51,970 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2552 transitions. [2023-01-28 09:42:51,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2552 transitions. [2023-01-28 09:42:51,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:42:51,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2552 transitions. [2023-01-28 09:42:51,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 121.52380952380952) internal successors, (2552), 21 states have internal predecessors, (2552), 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 09:42:51,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 327.0) internal successors, (7194), 22 states have internal predecessors, (7194), 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 09:42:51,992 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 327.0) internal successors, (7194), 22 states have internal predecessors, (7194), 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 09:42:51,992 INFO L175 Difference]: Start difference. First operand has 110 places, 68 transitions, 476 flow. Second operand 21 states and 2552 transitions. [2023-01-28 09:42:51,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 234 transitions, 1920 flow [2023-01-28 09:42:52,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 234 transitions, 1819 flow, removed 15 selfloop flow, removed 9 redundant places. [2023-01-28 09:42:52,006 INFO L231 Difference]: Finished difference. Result has 129 places, 78 transitions, 593 flow [2023-01-28 09:42:52,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=593, PETRI_PLACES=129, PETRI_TRANSITIONS=78} [2023-01-28 09:42:52,007 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 84 predicate places. [2023-01-28 09:42:52,007 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 78 transitions, 593 flow [2023-01-28 09:42:52,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 115.3) internal successors, (3459), 30 states have internal predecessors, (3459), 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 09:42:52,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:42:52,008 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:42:52,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-01-28 09:42:52,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-01-28 09:42:52,214 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:42:52,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:42:52,214 INFO L85 PathProgramCache]: Analyzing trace with hash -100488194, now seen corresponding path program 26 times [2023-01-28 09:42:52,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:42:52,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561296814] [2023-01-28 09:42:52,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:42:52,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:42:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:42:53,199 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:42:53,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:42:53,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561296814] [2023-01-28 09:42:53,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561296814] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:42:53,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600119026] [2023-01-28 09:42:53,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 09:42:53,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:42:53,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:42:53,201 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:42:53,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-28 09:42:53,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 09:42:53,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:42:53,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 25 conjunts are in the unsatisfiable core [2023-01-28 09:42:53,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:42:53,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 09:42:53,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 09:42:53,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 09:42:53,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 09:42:53,609 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:42:53,609 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-28 09:42:53,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:42:53,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:42:53,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600119026] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:42:53,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:42:53,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2023-01-28 09:42:53,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037232293] [2023-01-28 09:42:53,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:42:53,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 09:42:53,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:42:53,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 09:42:53,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2023-01-28 09:42:53,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 327 [2023-01-28 09:42:53,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 78 transitions, 593 flow. Second operand has 11 states, 11 states have (on average 124.54545454545455) internal successors, (1370), 11 states have internal predecessors, (1370), 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 09:42:53,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:42:53,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 327 [2023-01-28 09:42:53,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:42:54,178 INFO L130 PetriNetUnfolder]: 1134/2502 cut-off events. [2023-01-28 09:42:54,178 INFO L131 PetriNetUnfolder]: For 5505/5769 co-relation queries the response was YES. [2023-01-28 09:42:54,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9600 conditions, 2502 events. 1134/2502 cut-off events. For 5505/5769 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 17793 event pairs, 497 based on Foata normal form. 12/2368 useless extension candidates. Maximal degree in co-relation 9560. Up to 1012 conditions per place. [2023-01-28 09:42:54,190 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 72 selfloop transitions, 15 changer transitions 27/132 dead transitions. [2023-01-28 09:42:54,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 132 transitions, 1086 flow [2023-01-28 09:42:54,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 09:42:54,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 09:42:54,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1307 transitions. [2023-01-28 09:42:54,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39969418960244646 [2023-01-28 09:42:54,192 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1307 transitions. [2023-01-28 09:42:54,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1307 transitions. [2023-01-28 09:42:54,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:42:54,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1307 transitions. [2023-01-28 09:42:54,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 130.7) internal successors, (1307), 10 states have internal predecessors, (1307), 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 09:42:54,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 327.0) internal successors, (3597), 11 states have internal predecessors, (3597), 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 09:42:54,195 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 327.0) internal successors, (3597), 11 states have internal predecessors, (3597), 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 09:42:54,195 INFO L175 Difference]: Start difference. First operand has 129 places, 78 transitions, 593 flow. Second operand 10 states and 1307 transitions. [2023-01-28 09:42:54,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 132 transitions, 1086 flow [2023-01-28 09:42:54,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 132 transitions, 1009 flow, removed 29 selfloop flow, removed 13 redundant places. [2023-01-28 09:42:54,204 INFO L231 Difference]: Finished difference. Result has 117 places, 80 transitions, 568 flow [2023-01-28 09:42:54,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=568, PETRI_PLACES=117, PETRI_TRANSITIONS=80} [2023-01-28 09:42:54,204 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 72 predicate places. [2023-01-28 09:42:54,204 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 80 transitions, 568 flow [2023-01-28 09:42:54,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 124.54545454545455) internal successors, (1370), 11 states have internal predecessors, (1370), 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 09:42:54,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:42:54,205 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:42:54,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-01-28 09:42:54,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-01-28 09:42:54,406 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:42:54,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:42:54,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1225106388, now seen corresponding path program 27 times [2023-01-28 09:42:54,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:42:54,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833448730] [2023-01-28 09:42:54,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:42:54,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:42:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:42:55,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:42:55,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:42:55,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833448730] [2023-01-28 09:42:55,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833448730] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:42:55,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858564439] [2023-01-28 09:42:55,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 09:42:55,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:42:55,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:42:55,968 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:42:55,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-01-28 09:42:56,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-28 09:42:56,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:42:56,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 25 conjunts are in the unsatisfiable core [2023-01-28 09:42:56,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:42:56,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 09:42:56,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 09:42:56,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 09:42:56,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 09:42:56,354 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:42:56,354 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-28 09:42:56,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:42:56,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:42:56,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858564439] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:42:56,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:42:56,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 19 [2023-01-28 09:42:56,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294699508] [2023-01-28 09:42:56,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:42:56,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 09:42:56,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:42:56,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 09:42:56,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2023-01-28 09:42:56,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 327 [2023-01-28 09:42:56,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 80 transitions, 568 flow. Second operand has 11 states, 11 states have (on average 124.54545454545455) internal successors, (1370), 11 states have internal predecessors, (1370), 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 09:42:56,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:42:56,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 327 [2023-01-28 09:42:56,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:42:56,945 INFO L130 PetriNetUnfolder]: 1093/2440 cut-off events. [2023-01-28 09:42:56,945 INFO L131 PetriNetUnfolder]: For 6545/6809 co-relation queries the response was YES. [2023-01-28 09:42:56,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9612 conditions, 2440 events. 1093/2440 cut-off events. For 6545/6809 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 17176 event pairs, 467 based on Foata normal form. 12/2307 useless extension candidates. Maximal degree in co-relation 9580. Up to 1006 conditions per place. [2023-01-28 09:42:56,952 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 80 selfloop transitions, 15 changer transitions 24/137 dead transitions. [2023-01-28 09:42:56,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 137 transitions, 1077 flow [2023-01-28 09:42:56,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 09:42:56,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 09:42:56,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1312 transitions. [2023-01-28 09:42:56,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40122324159021405 [2023-01-28 09:42:56,954 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1312 transitions. [2023-01-28 09:42:56,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1312 transitions. [2023-01-28 09:42:56,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:42:56,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1312 transitions. [2023-01-28 09:42:56,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 131.2) internal successors, (1312), 10 states have internal predecessors, (1312), 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 09:42:56,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 327.0) internal successors, (3597), 11 states have internal predecessors, (3597), 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 09:42:56,958 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 327.0) internal successors, (3597), 11 states have internal predecessors, (3597), 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 09:42:56,958 INFO L175 Difference]: Start difference. First operand has 117 places, 80 transitions, 568 flow. Second operand 10 states and 1312 transitions. [2023-01-28 09:42:56,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 137 transitions, 1077 flow [2023-01-28 09:42:56,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 137 transitions, 1027 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-01-28 09:42:56,970 INFO L231 Difference]: Finished difference. Result has 118 places, 79 transitions, 550 flow [2023-01-28 09:42:56,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=550, PETRI_PLACES=118, PETRI_TRANSITIONS=79} [2023-01-28 09:42:56,970 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 73 predicate places. [2023-01-28 09:42:56,970 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 79 transitions, 550 flow [2023-01-28 09:42:56,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 124.54545454545455) internal successors, (1370), 11 states have internal predecessors, (1370), 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 09:42:56,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:42:56,971 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:42:56,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-01-28 09:42:57,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-01-28 09:42:57,176 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:42:57,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:42:57,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1461260418, now seen corresponding path program 28 times [2023-01-28 09:42:57,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:42:57,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280557766] [2023-01-28 09:42:57,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:42:57,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:42:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:42:57,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:42:57,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:42:57,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280557766] [2023-01-28 09:42:57,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280557766] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:42:57,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662357360] [2023-01-28 09:42:57,936 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 09:42:57,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:42:57,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:42:57,938 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:42:57,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-01-28 09:42:58,053 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 09:42:58,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:42:58,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 35 conjunts are in the unsatisfiable core [2023-01-28 09:42:58,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:42:58,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 09:42:58,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-01-28 09:42:58,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 09:42:58,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 09:42:58,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 09:42:58,309 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:42:58,309 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-28 09:42:58,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:42:58,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:43:00,425 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1152 (Array Int Int)) (v_ArrVal_1151 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1151) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1152) c_~f~0.base))) (= (select .cse0 (+ c_~f~0.offset (* c_~i~0 4))) (select .cse0 (+ (* 4 (select .cse0 (+ c_~f~0.offset (* c_~j~0 4)))) c_~f~0.offset))))) is different from false [2023-01-28 09:43:00,457 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:43:00,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 314 treesize of output 282 [2023-01-28 09:43:00,478 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:43:00,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 74 [2023-01-28 09:43:00,496 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:43:00,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 73 [2023-01-28 09:43:00,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:43:00,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662357360] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 09:43:00,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 09:43:00,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 10] total 27 [2023-01-28 09:43:00,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512999494] [2023-01-28 09:43:00,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:43:00,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 09:43:00,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:43:00,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 09:43:00,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=663, Unknown=5, NotChecked=52, Total=812 [2023-01-28 09:43:00,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 327 [2023-01-28 09:43:00,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 79 transitions, 550 flow. Second operand has 11 states, 11 states have (on average 124.54545454545455) internal successors, (1370), 11 states have internal predecessors, (1370), 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 09:43:00,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:43:00,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 327 [2023-01-28 09:43:00,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:43:01,436 INFO L130 PetriNetUnfolder]: 1021/2248 cut-off events. [2023-01-28 09:43:01,436 INFO L131 PetriNetUnfolder]: For 6072/6336 co-relation queries the response was YES. [2023-01-28 09:43:01,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8777 conditions, 2248 events. 1021/2248 cut-off events. For 6072/6336 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 15933 event pairs, 467 based on Foata normal form. 12/2115 useless extension candidates. Maximal degree in co-relation 8747. Up to 958 conditions per place. [2023-01-28 09:43:01,444 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 38 selfloop transitions, 3 changer transitions 72/124 dead transitions. [2023-01-28 09:43:01,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 124 transitions, 975 flow [2023-01-28 09:43:01,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 09:43:01,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 09:43:01,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1056 transitions. [2023-01-28 09:43:01,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036697247706422 [2023-01-28 09:43:01,446 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1056 transitions. [2023-01-28 09:43:01,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1056 transitions. [2023-01-28 09:43:01,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:43:01,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1056 transitions. [2023-01-28 09:43:01,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 132.0) internal successors, (1056), 8 states have internal predecessors, (1056), 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 09:43:01,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 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 09:43:01,449 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 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 09:43:01,449 INFO L175 Difference]: Start difference. First operand has 118 places, 79 transitions, 550 flow. Second operand 8 states and 1056 transitions. [2023-01-28 09:43:01,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 124 transitions, 975 flow [2023-01-28 09:43:01,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 124 transitions, 928 flow, removed 3 selfloop flow, removed 10 redundant places. [2023-01-28 09:43:01,459 INFO L231 Difference]: Finished difference. Result has 115 places, 51 transitions, 289 flow [2023-01-28 09:43:01,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=289, PETRI_PLACES=115, PETRI_TRANSITIONS=51} [2023-01-28 09:43:01,459 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 70 predicate places. [2023-01-28 09:43:01,459 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 51 transitions, 289 flow [2023-01-28 09:43:01,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 124.54545454545455) internal successors, (1370), 11 states have internal predecessors, (1370), 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 09:43:01,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:43:01,460 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:43:01,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-01-28 09:43:01,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-01-28 09:43:01,661 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:43:01,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:43:01,662 INFO L85 PathProgramCache]: Analyzing trace with hash -348089180, now seen corresponding path program 29 times [2023-01-28 09:43:01,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:43:01,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780532333] [2023-01-28 09:43:01,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:43:01,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:43:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:43:02,917 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:43:02,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:43:02,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780532333] [2023-01-28 09:43:02,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780532333] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:43:02,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917135433] [2023-01-28 09:43:02,918 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 09:43:02,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:43:02,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:43:02,921 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:43:02,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-01-28 09:43:03,079 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-28 09:43:03,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:43:03,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 33 conjunts are in the unsatisfiable core [2023-01-28 09:43:03,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:43:03,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 09:43:03,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 09:43:03,395 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:43:03,395 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-28 09:43:03,403 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:43:03,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:43:05,575 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:43:05,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 114 [2023-01-28 09:43:05,593 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:43:05,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 60 [2023-01-28 09:43:05,833 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-01-28 09:43:05,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917135433] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 09:43:05,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 09:43:05,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15, 12] total 33 [2023-01-28 09:43:05,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385429023] [2023-01-28 09:43:05,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:43:05,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:43:05,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:43:05,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:43:05,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1074, Unknown=2, NotChecked=0, Total=1190 [2023-01-28 09:43:05,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 327 [2023-01-28 09:43:05,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 51 transitions, 289 flow. Second operand has 10 states, 10 states have (on average 127.8) internal successors, (1278), 10 states have internal predecessors, (1278), 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 09:43:05,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:43:05,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 327 [2023-01-28 09:43:05,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:43:10,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 09:43:10,215 INFO L130 PetriNetUnfolder]: 102/275 cut-off events. [2023-01-28 09:43:10,215 INFO L131 PetriNetUnfolder]: For 481/481 co-relation queries the response was YES. [2023-01-28 09:43:10,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1044 conditions, 275 events. 102/275 cut-off events. For 481/481 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1096 event pairs, 30 based on Foata normal form. 2/274 useless extension candidates. Maximal degree in co-relation 1016. Up to 108 conditions per place. [2023-01-28 09:43:10,216 INFO L137 encePairwiseOnDemand]: 318/327 looper letters, 34 selfloop transitions, 7 changer transitions 22/74 dead transitions. [2023-01-28 09:43:10,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 74 transitions, 531 flow [2023-01-28 09:43:10,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:43:10,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:43:10,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1175 transitions. [2023-01-28 09:43:10,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.399252463472647 [2023-01-28 09:43:10,217 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1175 transitions. [2023-01-28 09:43:10,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1175 transitions. [2023-01-28 09:43:10,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:43:10,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1175 transitions. [2023-01-28 09:43:10,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 130.55555555555554) internal successors, (1175), 9 states have internal predecessors, (1175), 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 09:43:10,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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 09:43:10,220 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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 09:43:10,220 INFO L175 Difference]: Start difference. First operand has 115 places, 51 transitions, 289 flow. Second operand 9 states and 1175 transitions. [2023-01-28 09:43:10,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 74 transitions, 531 flow [2023-01-28 09:43:10,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 74 transitions, 418 flow, removed 14 selfloop flow, removed 29 redundant places. [2023-01-28 09:43:10,221 INFO L231 Difference]: Finished difference. Result has 76 places, 49 transitions, 202 flow [2023-01-28 09:43:10,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=202, PETRI_PLACES=76, PETRI_TRANSITIONS=49} [2023-01-28 09:43:10,222 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 31 predicate places. [2023-01-28 09:43:10,222 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 49 transitions, 202 flow [2023-01-28 09:43:10,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 127.8) internal successors, (1278), 10 states have internal predecessors, (1278), 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 09:43:10,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:43:10,222 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:43:10,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-01-28 09:43:10,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:43:10,429 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:43:10,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:43:10,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1003084288, now seen corresponding path program 30 times [2023-01-28 09:43:10,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:43:10,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076249592] [2023-01-28 09:43:10,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:43:10,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:43:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:43:11,583 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:43:11,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:43:11,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076249592] [2023-01-28 09:43:11,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076249592] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:43:11,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877154308] [2023-01-28 09:43:11,583 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 09:43:11,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:43:11,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:43:11,585 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:43:11,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-01-28 09:43:11,761 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-01-28 09:43:11,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:43:11,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 23 conjunts are in the unsatisfiable core [2023-01-28 09:43:11,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:43:11,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 09:43:11,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 09:43:12,053 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:43:12,053 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-28 09:43:12,060 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-01-28 09:43:12,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:43:12,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877154308] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:43:12,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:43:12,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 23 [2023-01-28 09:43:12,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884987105] [2023-01-28 09:43:12,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:43:12,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 09:43:12,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:43:12,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 09:43:12,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2023-01-28 09:43:12,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 327 [2023-01-28 09:43:12,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 49 transitions, 202 flow. Second operand has 11 states, 11 states have (on average 127.54545454545455) internal successors, (1403), 11 states have internal predecessors, (1403), 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 09:43:12,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:43:12,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 327 [2023-01-28 09:43:12,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:43:12,300 INFO L130 PetriNetUnfolder]: 55/172 cut-off events. [2023-01-28 09:43:12,301 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-01-28 09:43:12,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 172 events. 55/172 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 551 event pairs, 30 based on Foata normal form. 2/172 useless extension candidates. Maximal degree in co-relation 535. Up to 83 conditions per place. [2023-01-28 09:43:12,301 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 0 selfloop transitions, 0 changer transitions 54/54 dead transitions. [2023-01-28 09:43:12,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 54 transitions, 309 flow [2023-01-28 09:43:12,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:43:12,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:43:12,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1160 transitions. [2023-01-28 09:43:12,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3941556235134217 [2023-01-28 09:43:12,303 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1160 transitions. [2023-01-28 09:43:12,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1160 transitions. [2023-01-28 09:43:12,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:43:12,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1160 transitions. [2023-01-28 09:43:12,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.88888888888889) internal successors, (1160), 9 states have internal predecessors, (1160), 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 09:43:12,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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 09:43:12,306 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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 09:43:12,306 INFO L175 Difference]: Start difference. First operand has 76 places, 49 transitions, 202 flow. Second operand 9 states and 1160 transitions. [2023-01-28 09:43:12,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 54 transitions, 309 flow [2023-01-28 09:43:12,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 54 transitions, 284 flow, removed 2 selfloop flow, removed 11 redundant places. [2023-01-28 09:43:12,308 INFO L231 Difference]: Finished difference. Result has 70 places, 0 transitions, 0 flow [2023-01-28 09:43:12,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=70, PETRI_TRANSITIONS=0} [2023-01-28 09:43:12,308 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 25 predicate places. [2023-01-28 09:43:12,308 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 0 transitions, 0 flow [2023-01-28 09:43:12,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 127.54545454545455) internal successors, (1403), 11 states have internal predecessors, (1403), 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 09:43:12,311 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 09:43:12,311 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 09:43:12,311 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 09:43:12,311 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 09:43:12,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-01-28 09:43:12,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:43:12,518 INFO L445 BasicCegarLoop]: Path program histogram: [30, 1] [2023-01-28 09:43:12,520 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 09:43:12,520 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 09:43:12,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 09:43:12 BasicIcfg [2023-01-28 09:43:12,521 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 09:43:12,522 INFO L158 Benchmark]: Toolchain (without parser) took 106640.13ms. Allocated memory was 343.9MB in the beginning and 3.4GB in the end (delta: 3.1GB). Free memory was 290.4MB in the beginning and 2.9GB in the end (delta: -2.6GB). Peak memory consumption was 488.8MB. Max. memory is 16.0GB. [2023-01-28 09:43:12,522 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 255.9MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 09:43:12,522 INFO L158 Benchmark]: CACSL2BoogieTranslator took 203.66ms. Allocated memory is still 343.9MB. Free memory was 290.1MB in the beginning and 278.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 09:43:12,522 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.88ms. Allocated memory is still 343.9MB. Free memory was 278.0MB in the beginning and 321.2MB in the end (delta: -43.2MB). Peak memory consumption was 8.5MB. Max. memory is 16.0GB. [2023-01-28 09:43:12,522 INFO L158 Benchmark]: Boogie Preprocessor took 23.78ms. Allocated memory is still 343.9MB. Free memory was 321.2MB in the beginning and 319.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 09:43:12,523 INFO L158 Benchmark]: RCFGBuilder took 546.89ms. Allocated memory is still 343.9MB. Free memory was 319.5MB in the beginning and 293.1MB in the end (delta: 26.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-01-28 09:43:12,523 INFO L158 Benchmark]: TraceAbstraction took 105815.16ms. Allocated memory was 343.9MB in the beginning and 3.4GB in the end (delta: 3.1GB). Free memory was 292.2MB in the beginning and 2.9GB in the end (delta: -2.6GB). Peak memory consumption was 488.7MB. Max. memory is 16.0GB. [2023-01-28 09:43:12,524 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 255.9MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 203.66ms. Allocated memory is still 343.9MB. Free memory was 290.1MB in the beginning and 278.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 45.88ms. Allocated memory is still 343.9MB. Free memory was 278.0MB in the beginning and 321.2MB in the end (delta: -43.2MB). Peak memory consumption was 8.5MB. Max. memory is 16.0GB. * Boogie Preprocessor took 23.78ms. Allocated memory is still 343.9MB. Free memory was 321.2MB in the beginning and 319.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 546.89ms. Allocated memory is still 343.9MB. Free memory was 319.5MB in the beginning and 293.1MB in the end (delta: 26.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 105815.16ms. Allocated memory was 343.9MB in the beginning and 3.4GB in the end (delta: 3.1GB). Free memory was 292.2MB in the beginning and 2.9GB in the end (delta: -2.6GB). Peak memory consumption was 488.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.2s, 170 PlacesBefore, 45 PlacesAfterwards, 167 TransitionsBefore, 36 TransitionsAfterwards, 1266 CoEnabledTransitionPairs, 7 FixpointIterations, 101 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 0 ConcurrentYvCompositions, 6 ChoiceCompositions, 147 TotalNumberOfCompositions, 7223 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3209, independent: 2894, independent conditional: 0, independent unconditional: 2894, dependent: 315, dependent conditional: 0, dependent unconditional: 315, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 654, independent: 631, independent conditional: 0, independent unconditional: 631, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3209, independent: 2263, independent conditional: 0, independent unconditional: 2263, dependent: 292, dependent conditional: 0, dependent unconditional: 292, unknown: 654, unknown conditional: 0, unknown unconditional: 654] , Statistics on independence cache: Total cache size (in pairs): 189, Positive cache size: 172, Positive conditional cache size: 0, Positive unconditional cache size: 172, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 161]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 209 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 105.7s, OverallIterations: 31, TraceHistogramMax: 6, PathProgramHistogramMax: 30, EmptinessCheckTime: 0.0s, AutomataDifference: 58.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.3s, HoareTripleCheckerStatistics: 45 mSolverCounterUnknown, 3222 SdHoareTripleChecker+Valid, 17.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3222 mSDsluCounter, 35 SdHoareTripleChecker+Invalid, 16.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 477 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 104 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11226 IncrementalHoareTripleChecker+Invalid, 11852 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 104 mSolverCounterUnsat, 20 mSDtfsCounter, 11226 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1517 GetRequests, 885 SyntacticMatches, 5 SemanticMatches, 627 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 2493 ImplicationChecksByTransitivity, 35.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1413occurred in iteration=14, InterpolantAutomatonStates: 286, 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: 0.4s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 33.0s InterpolantComputationTime, 1930 NumberOfCodeBlocks, 1884 NumberOfCodeBlocksAsserted, 59 NumberOfCheckSat, 2169 ConstructedInterpolants, 100 QuantifiedInterpolants, 31334 SizeOfPredicates, 272 NumberOfNonLiveVariables, 5646 ConjunctsInSsa, 511 ConjunctsInUnsatCore, 60 InterpolantComputations, 29 PerfectInterpolantSequences, 120/249 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 09:43:12,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...