/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-parallel-sum-equiv.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 09:57:27,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 09:57:27,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 09:57:27,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 09:57:27,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 09:57:27,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 09:57:27,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 09:57:27,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 09:57:27,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 09:57:27,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 09:57:27,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 09:57:27,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 09:57:27,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 09:57:27,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 09:57:27,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 09:57:27,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 09:57:27,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 09:57:27,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 09:57:27,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 09:57:27,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 09:57:27,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 09:57:27,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 09:57:27,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 09:57:27,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 09:57:27,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 09:57:27,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 09:57:27,622 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 09:57:27,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 09:57:27,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 09:57:27,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 09:57:27,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 09:57:27,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 09:57:27,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 09:57:27,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 09:57:27,628 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 09:57:27,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 09:57:27,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 09:57:27,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 09:57:27,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 09:57:27,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 09:57:27,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 09:57:27,631 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 09:57:27,643 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 09:57:27,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 09:57:27,644 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 09:57:27,644 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 09:57:27,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 09:57:27,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 09:57:27,645 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 09:57:27,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 09:57:27,645 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 09:57:27,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 09:57:27,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 09:57:27,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 09:57:27,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 09:57:27,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 09:57:27,646 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 09:57:27,646 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 09:57:27,646 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 09:57:27,646 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 09:57:27,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 09:57:27,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 09:57:27,647 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 09:57:27,647 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 09:57:27,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 09:57:27,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:57:27,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 09:57:27,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 09:57:27,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 09:57:27,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 09:57:27,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 09:57:27,648 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 09:57:27,648 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 09:57:27,648 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 09:57:27,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 09:57:27,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 09:57:27,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 09:57:27,824 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 09:57:27,824 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 09:57:27,825 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2023-01-28 09:57:28,808 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 09:57:28,952 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 09:57:28,952 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2023-01-28 09:57:28,958 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1cb90fa9/24444e0d35d34445b7623563710fbc37/FLAG4fe79a687 [2023-01-28 09:57:28,972 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1cb90fa9/24444e0d35d34445b7623563710fbc37 [2023-01-28 09:57:28,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 09:57:28,975 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 09:57:28,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 09:57:28,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 09:57:28,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 09:57:28,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:57:28" (1/1) ... [2023-01-28 09:57:28,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@501357ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:28, skipping insertion in model container [2023-01-28 09:57:28,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:57:28" (1/1) ... [2023-01-28 09:57:28,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 09:57:29,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 09:57:29,151 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-parallel-sum-equiv.wvr.c[3770,3783] [2023-01-28 09:57:29,163 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:57:29,169 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 09:57:29,187 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-parallel-sum-equiv.wvr.c[3770,3783] [2023-01-28 09:57:29,189 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:57:29,197 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 09:57:29,197 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 09:57:29,202 INFO L208 MainTranslator]: Completed translation [2023-01-28 09:57:29,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:29 WrapperNode [2023-01-28 09:57:29,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 09:57:29,203 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 09:57:29,203 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 09:57:29,203 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 09:57:29,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:29" (1/1) ... [2023-01-28 09:57:29,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:29" (1/1) ... [2023-01-28 09:57:29,229 INFO L138 Inliner]: procedures = 27, calls = 73, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 257 [2023-01-28 09:57:29,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 09:57:29,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 09:57:29,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 09:57:29,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 09:57:29,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:29" (1/1) ... [2023-01-28 09:57:29,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:29" (1/1) ... [2023-01-28 09:57:29,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:29" (1/1) ... [2023-01-28 09:57:29,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:29" (1/1) ... [2023-01-28 09:57:29,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:29" (1/1) ... [2023-01-28 09:57:29,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:29" (1/1) ... [2023-01-28 09:57:29,248 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:29" (1/1) ... [2023-01-28 09:57:29,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:29" (1/1) ... [2023-01-28 09:57:29,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 09:57:29,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 09:57:29,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 09:57:29,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 09:57:29,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:29" (1/1) ... [2023-01-28 09:57:29,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:57:29,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:57:29,290 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 09:57:29,296 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 09:57:29,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 09:57:29,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 09:57:29,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 09:57:29,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 09:57:29,316 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 09:57:29,317 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 09:57:29,317 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 09:57:29,317 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 09:57:29,317 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 09:57:29,319 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 09:57:29,320 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-28 09:57:29,320 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-28 09:57:29,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 09:57:29,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 09:57:29,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 09:57:29,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 09:57:29,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 09:57:29,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 09:57:29,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 09:57:29,321 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 09:57:29,428 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 09:57:29,429 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 09:57:29,692 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 09:57:29,788 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 09:57:29,788 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-28 09:57:29,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:57:29 BoogieIcfgContainer [2023-01-28 09:57:29,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 09:57:29,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 09:57:29,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 09:57:29,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 09:57:29,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 09:57:28" (1/3) ... [2023-01-28 09:57:29,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dbff3b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:57:29, skipping insertion in model container [2023-01-28 09:57:29,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:29" (2/3) ... [2023-01-28 09:57:29,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dbff3b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:57:29, skipping insertion in model container [2023-01-28 09:57:29,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:57:29" (3/3) ... [2023-01-28 09:57:29,800 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2023-01-28 09:57:29,811 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 09:57:29,812 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 09:57:29,812 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 09:57:29,906 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-01-28 09:57:29,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 205 transitions, 454 flow [2023-01-28 09:57:29,982 INFO L130 PetriNetUnfolder]: 14/190 cut-off events. [2023-01-28 09:57:29,982 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 09:57:29,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 190 events. 14/190 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 180 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 163. Up to 3 conditions per place. [2023-01-28 09:57:29,987 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 205 transitions, 454 flow [2023-01-28 09:57:29,990 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 182 transitions, 394 flow [2023-01-28 09:57:29,992 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 09:57:30,004 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 181 places, 182 transitions, 394 flow [2023-01-28 09:57:30,007 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 181 places, 182 transitions, 394 flow [2023-01-28 09:57:30,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 182 transitions, 394 flow [2023-01-28 09:57:30,033 INFO L130 PetriNetUnfolder]: 14/182 cut-off events. [2023-01-28 09:57:30,033 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 09:57:30,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 182 events. 14/182 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 180 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 163. Up to 3 conditions per place. [2023-01-28 09:57:30,035 INFO L119 LiptonReduction]: Number of co-enabled transitions 2880 [2023-01-28 09:57:34,897 INFO L134 LiptonReduction]: Checked pairs total: 7881 [2023-01-28 09:57:34,897 INFO L136 LiptonReduction]: Total number of compositions: 165 [2023-01-28 09:57:34,906 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 09:57:34,911 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;@23a0c2e9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 09:57:34,911 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-01-28 09:57:34,916 INFO L130 PetriNetUnfolder]: 6/38 cut-off events. [2023-01-28 09:57:34,916 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 09:57:34,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:57:34,917 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] [2023-01-28 09:57:34,917 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 09:57:34,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:57:34,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1095116209, now seen corresponding path program 1 times [2023-01-28 09:57:34,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:57:34,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024656278] [2023-01-28 09:57:34,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:57:34,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:57:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:57:35,256 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 09:57:35,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:57:35,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024656278] [2023-01-28 09:57:35,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024656278] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:57:35,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:57:35,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:57:35,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071728216] [2023-01-28 09:57:35,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:57:35,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:57:35,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:57:35,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:57:35,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:57:35,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 372 [2023-01-28 09:57:35,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 173.5) internal successors, (694), 4 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:35,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:57:35,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 372 [2023-01-28 09:57:35,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:57:35,599 INFO L130 PetriNetUnfolder]: 1658/2379 cut-off events. [2023-01-28 09:57:35,599 INFO L131 PetriNetUnfolder]: For 374/387 co-relation queries the response was YES. [2023-01-28 09:57:35,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5103 conditions, 2379 events. 1658/2379 cut-off events. For 374/387 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9807 event pairs, 523 based on Foata normal form. 5/1793 useless extension candidates. Maximal degree in co-relation 5002. Up to 1081 conditions per place. [2023-01-28 09:57:35,614 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 67 selfloop transitions, 7 changer transitions 1/84 dead transitions. [2023-01-28 09:57:35,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 84 transitions, 396 flow [2023-01-28 09:57:35,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:57:35,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:57:35,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 748 transitions. [2023-01-28 09:57:35,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026881720430108 [2023-01-28 09:57:35,630 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 748 transitions. [2023-01-28 09:57:35,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 748 transitions. [2023-01-28 09:57:35,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:57:35,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 748 transitions. [2023-01-28 09:57:35,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:35,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:35,644 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:35,645 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 108 flow. Second operand 4 states and 748 transitions. [2023-01-28 09:57:35,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 84 transitions, 396 flow [2023-01-28 09:57:35,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 84 transitions, 344 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-28 09:57:35,651 INFO L231 Difference]: Finished difference. Result has 43 places, 45 transitions, 133 flow [2023-01-28 09:57:35,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=43, PETRI_TRANSITIONS=45} [2023-01-28 09:57:35,655 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2023-01-28 09:57:35,655 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 45 transitions, 133 flow [2023-01-28 09:57:35,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.5) internal successors, (694), 4 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:35,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:57:35,656 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] [2023-01-28 09:57:35,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 09:57:35,656 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 09:57:35,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:57:35,658 INFO L85 PathProgramCache]: Analyzing trace with hash 489950223, now seen corresponding path program 2 times [2023-01-28 09:57:35,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:57:35,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031563596] [2023-01-28 09:57:35,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:57:35,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:57:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:57:35,812 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 09:57:35,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:57:35,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031563596] [2023-01-28 09:57:35,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031563596] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:57:35,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:57:35,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:57:35,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282756762] [2023-01-28 09:57:35,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:57:35,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:57:35,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:57:35,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:57:35,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:57:35,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 372 [2023-01-28 09:57:35,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 173.5) internal successors, (694), 4 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:35,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:57:35,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 372 [2023-01-28 09:57:35,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:57:36,125 INFO L130 PetriNetUnfolder]: 2346/3398 cut-off events. [2023-01-28 09:57:36,125 INFO L131 PetriNetUnfolder]: For 760/760 co-relation queries the response was YES. [2023-01-28 09:57:36,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8017 conditions, 3398 events. 2346/3398 cut-off events. For 760/760 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 15085 event pairs, 975 based on Foata normal form. 1/2822 useless extension candidates. Maximal degree in co-relation 3909. Up to 1875 conditions per place. [2023-01-28 09:57:36,140 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 71 selfloop transitions, 8 changer transitions 1/89 dead transitions. [2023-01-28 09:57:36,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 89 transitions, 416 flow [2023-01-28 09:57:36,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:57:36,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:57:36,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 747 transitions. [2023-01-28 09:57:36,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020161290322581 [2023-01-28 09:57:36,142 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 747 transitions. [2023-01-28 09:57:36,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 747 transitions. [2023-01-28 09:57:36,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:57:36,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 747 transitions. [2023-01-28 09:57:36,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 186.75) internal successors, (747), 4 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:36,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:36,147 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:36,147 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 133 flow. Second operand 4 states and 747 transitions. [2023-01-28 09:57:36,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 89 transitions, 416 flow [2023-01-28 09:57:36,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 89 transitions, 416 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 09:57:36,149 INFO L231 Difference]: Finished difference. Result has 48 places, 50 transitions, 193 flow [2023-01-28 09:57:36,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=48, PETRI_TRANSITIONS=50} [2023-01-28 09:57:36,150 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2023-01-28 09:57:36,150 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 50 transitions, 193 flow [2023-01-28 09:57:36,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.5) internal successors, (694), 4 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:36,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:57:36,150 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] [2023-01-28 09:57:36,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 09:57:36,151 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 09:57:36,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:57:36,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1017003560, now seen corresponding path program 1 times [2023-01-28 09:57:36,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:57:36,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158764529] [2023-01-28 09:57:36,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:57:36,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:57:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:57:36,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:57:36,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:57:36,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158764529] [2023-01-28 09:57:36,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158764529] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:57:36,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:57:36,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:57:36,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748019676] [2023-01-28 09:57:36,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:57:36,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:57:36,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:57:36,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:57:36,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:57:36,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 372 [2023-01-28 09:57:36,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 50 transitions, 193 flow. Second operand has 5 states, 5 states have (on average 160.6) internal successors, (803), 5 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:36,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:57:36,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 372 [2023-01-28 09:57:36,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:57:36,723 INFO L130 PetriNetUnfolder]: 3817/5665 cut-off events. [2023-01-28 09:57:36,723 INFO L131 PetriNetUnfolder]: For 4364/4364 co-relation queries the response was YES. [2023-01-28 09:57:36,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14384 conditions, 5665 events. 3817/5665 cut-off events. For 4364/4364 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 28776 event pairs, 2160 based on Foata normal form. 186/4864 useless extension candidates. Maximal degree in co-relation 8356. Up to 3221 conditions per place. [2023-01-28 09:57:36,747 INFO L137 encePairwiseOnDemand]: 367/372 looper letters, 90 selfloop transitions, 5 changer transitions 0/104 dead transitions. [2023-01-28 09:57:36,747 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 104 transitions, 574 flow [2023-01-28 09:57:36,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:57:36,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:57:36,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 858 transitions. [2023-01-28 09:57:36,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4612903225806452 [2023-01-28 09:57:36,750 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 858 transitions. [2023-01-28 09:57:36,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 858 transitions. [2023-01-28 09:57:36,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:57:36,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 858 transitions. [2023-01-28 09:57:36,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 171.6) internal successors, (858), 5 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:36,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 372.0) internal successors, (2232), 6 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:36,755 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 372.0) internal successors, (2232), 6 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:36,755 INFO L175 Difference]: Start difference. First operand has 48 places, 50 transitions, 193 flow. Second operand 5 states and 858 transitions. [2023-01-28 09:57:36,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 104 transitions, 574 flow [2023-01-28 09:57:36,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 104 transitions, 572 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-01-28 09:57:36,763 INFO L231 Difference]: Finished difference. Result has 55 places, 54 transitions, 243 flow [2023-01-28 09:57:36,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=243, PETRI_PLACES=55, PETRI_TRANSITIONS=54} [2023-01-28 09:57:36,763 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2023-01-28 09:57:36,763 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 54 transitions, 243 flow [2023-01-28 09:57:36,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 160.6) internal successors, (803), 5 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:36,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:57:36,764 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] [2023-01-28 09:57:36,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 09:57:36,764 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 09:57:36,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:57:36,765 INFO L85 PathProgramCache]: Analyzing trace with hash 331371296, now seen corresponding path program 1 times [2023-01-28 09:57:36,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:57:36,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506282844] [2023-01-28 09:57:36,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:57:36,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:57:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:57:36,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:57:36,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:57:36,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506282844] [2023-01-28 09:57:36,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506282844] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:57:36,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260945775] [2023-01-28 09:57:36,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:57:36,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:57:36,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:57:36,883 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 09:57:36,910 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 09:57:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:57:36,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 09:57:36,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:57:37,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:57:37,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:57:37,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:57:37,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260945775] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:57:37,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:57:37,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-01-28 09:57:37,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506472638] [2023-01-28 09:57:37,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:57:37,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 09:57:37,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:57:37,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 09:57:37,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-01-28 09:57:37,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 372 [2023-01-28 09:57:37,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 54 transitions, 243 flow. Second operand has 12 states, 12 states have (on average 158.83333333333334) internal successors, (1906), 12 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:37,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:57:37,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 372 [2023-01-28 09:57:37,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:57:37,849 INFO L130 PetriNetUnfolder]: 5288/7796 cut-off events. [2023-01-28 09:57:37,849 INFO L131 PetriNetUnfolder]: For 8771/8771 co-relation queries the response was YES. [2023-01-28 09:57:37,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20366 conditions, 7796 events. 5288/7796 cut-off events. For 8771/8771 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 42303 event pairs, 2005 based on Foata normal form. 186/6605 useless extension candidates. Maximal degree in co-relation 14672. Up to 2043 conditions per place. [2023-01-28 09:57:37,878 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 165 selfloop transitions, 10 changer transitions 0/184 dead transitions. [2023-01-28 09:57:37,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 184 transitions, 1068 flow [2023-01-28 09:57:37,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:57:37,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:57:37,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1548 transitions. [2023-01-28 09:57:37,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46236559139784944 [2023-01-28 09:57:37,881 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1548 transitions. [2023-01-28 09:57:37,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1548 transitions. [2023-01-28 09:57:37,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:57:37,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1548 transitions. [2023-01-28 09:57:37,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 172.0) internal successors, (1548), 9 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:37,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 372.0) internal successors, (3720), 10 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:37,888 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 372.0) internal successors, (3720), 10 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:37,888 INFO L175 Difference]: Start difference. First operand has 55 places, 54 transitions, 243 flow. Second operand 9 states and 1548 transitions. [2023-01-28 09:57:37,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 184 transitions, 1068 flow [2023-01-28 09:57:37,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 184 transitions, 1064 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 09:57:37,897 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 316 flow [2023-01-28 09:57:37,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=316, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2023-01-28 09:57:37,898 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 20 predicate places. [2023-01-28 09:57:37,898 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 316 flow [2023-01-28 09:57:37,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 158.83333333333334) internal successors, (1906), 12 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:37,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:57:37,898 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] [2023-01-28 09:57:37,906 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 09:57:38,104 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 09:57:38,104 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 09:57:38,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:57:38,105 INFO L85 PathProgramCache]: Analyzing trace with hash -683343843, now seen corresponding path program 1 times [2023-01-28 09:57:38,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:57:38,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169947073] [2023-01-28 09:57:38,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:57:38,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:57:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:57:38,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:57:38,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:57:38,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169947073] [2023-01-28 09:57:38,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169947073] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:57:38,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:57:38,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:57:38,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249461191] [2023-01-28 09:57:38,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:57:38,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:57:38,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:57:38,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:57:38,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:57:38,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 372 [2023-01-28 09:57:38,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 316 flow. Second operand has 5 states, 5 states have (on average 160.8) internal successors, (804), 5 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:38,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:57:38,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 372 [2023-01-28 09:57:38,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:57:38,811 INFO L130 PetriNetUnfolder]: 4174/6390 cut-off events. [2023-01-28 09:57:38,811 INFO L131 PetriNetUnfolder]: For 9862/9862 co-relation queries the response was YES. [2023-01-28 09:57:38,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17827 conditions, 6390 events. 4174/6390 cut-off events. For 9862/9862 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 34198 event pairs, 2918 based on Foata normal form. 0/5375 useless extension candidates. Maximal degree in co-relation 12574. Up to 5314 conditions per place. [2023-01-28 09:57:38,843 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 45 selfloop transitions, 2 changer transitions 28/84 dead transitions. [2023-01-28 09:57:38,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 84 transitions, 543 flow [2023-01-28 09:57:38,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:57:38,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:57:38,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 840 transitions. [2023-01-28 09:57:38,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2023-01-28 09:57:38,845 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 840 transitions. [2023-01-28 09:57:38,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 840 transitions. [2023-01-28 09:57:38,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:57:38,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 840 transitions. [2023-01-28 09:57:38,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 168.0) internal successors, (840), 5 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:38,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 372.0) internal successors, (2232), 6 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:38,850 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 372.0) internal successors, (2232), 6 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:38,850 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 316 flow. Second operand 5 states and 840 transitions. [2023-01-28 09:57:38,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 84 transitions, 543 flow [2023-01-28 09:57:38,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 84 transitions, 527 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-01-28 09:57:38,860 INFO L231 Difference]: Finished difference. Result has 70 places, 56 transitions, 280 flow [2023-01-28 09:57:38,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=280, PETRI_PLACES=70, PETRI_TRANSITIONS=56} [2023-01-28 09:57:38,862 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 24 predicate places. [2023-01-28 09:57:38,862 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 56 transitions, 280 flow [2023-01-28 09:57:38,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 160.8) internal successors, (804), 5 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:38,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:57:38,862 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] [2023-01-28 09:57:38,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 09:57:38,863 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 09:57:38,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:57:38,863 INFO L85 PathProgramCache]: Analyzing trace with hash -818681128, now seen corresponding path program 2 times [2023-01-28 09:57:38,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:57:38,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955131163] [2023-01-28 09:57:38,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:57:38,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:57:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:57:39,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:57:39,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:57:39,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955131163] [2023-01-28 09:57:39,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955131163] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:57:39,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169329674] [2023-01-28 09:57:39,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 09:57:39,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:57:39,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:57:39,056 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 09:57:39,080 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 09:57:39,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 09:57:39,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:57:39,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 09:57:39,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:57:39,245 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:57:39,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:57:39,297 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:57:39,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169329674] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 09:57:39,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 09:57:39,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2023-01-28 09:57:39,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737742127] [2023-01-28 09:57:39,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:57:39,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 09:57:39,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:57:39,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 09:57:39,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-01-28 09:57:39,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 372 [2023-01-28 09:57:39,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 56 transitions, 280 flow. Second operand has 6 states, 6 states have (on average 160.16666666666666) internal successors, (961), 6 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:39,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:57:39,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 372 [2023-01-28 09:57:39,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:57:39,698 INFO L130 PetriNetUnfolder]: 3271/4874 cut-off events. [2023-01-28 09:57:39,698 INFO L131 PetriNetUnfolder]: For 7496/7496 co-relation queries the response was YES. [2023-01-28 09:57:39,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14504 conditions, 4874 events. 3271/4874 cut-off events. For 7496/7496 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 24028 event pairs, 1845 based on Foata normal form. 96/4792 useless extension candidates. Maximal degree in co-relation 14477. Up to 2273 conditions per place. [2023-01-28 09:57:39,724 INFO L137 encePairwiseOnDemand]: 365/372 looper letters, 84 selfloop transitions, 7 changer transitions 0/100 dead transitions. [2023-01-28 09:57:39,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 100 transitions, 660 flow [2023-01-28 09:57:39,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 09:57:39,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 09:57:39,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1008 transitions. [2023-01-28 09:57:39,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2023-01-28 09:57:39,727 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1008 transitions. [2023-01-28 09:57:39,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1008 transitions. [2023-01-28 09:57:39,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:57:39,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1008 transitions. [2023-01-28 09:57:39,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:39,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 372.0) internal successors, (2604), 7 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:39,731 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 372.0) internal successors, (2604), 7 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:39,731 INFO L175 Difference]: Start difference. First operand has 70 places, 56 transitions, 280 flow. Second operand 6 states and 1008 transitions. [2023-01-28 09:57:39,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 100 transitions, 660 flow [2023-01-28 09:57:39,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 100 transitions, 632 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-01-28 09:57:39,738 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 321 flow [2023-01-28 09:57:39,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=321, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2023-01-28 09:57:39,739 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2023-01-28 09:57:39,739 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 321 flow [2023-01-28 09:57:39,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.16666666666666) internal successors, (961), 6 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:39,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:57:39,740 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] [2023-01-28 09:57:39,745 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 09:57:39,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-01-28 09:57:39,945 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 09:57:39,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:57:39,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1536916939, now seen corresponding path program 1 times [2023-01-28 09:57:39,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:57:39,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616297238] [2023-01-28 09:57:39,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:57:39,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:57:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:57:40,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:57:40,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:57:40,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616297238] [2023-01-28 09:57:40,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616297238] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:57:40,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011915204] [2023-01-28 09:57:40,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:57:40,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:57:40,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:57:40,090 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 09:57:40,093 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 09:57:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:57:40,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-28 09:57:40,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:57:40,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:57:40,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:57:40,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:57:40,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011915204] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:57:40,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:57:40,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-01-28 09:57:40,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504957076] [2023-01-28 09:57:40,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:57:40,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 09:57:40,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:57:40,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 09:57:40,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-01-28 09:57:40,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 372 [2023-01-28 09:57:40,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 321 flow. Second operand has 11 states, 11 states have (on average 159.36363636363637) internal successors, (1753), 11 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:40,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:57:40,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 372 [2023-01-28 09:57:40,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:57:40,635 INFO L130 PetriNetUnfolder]: 2097/3250 cut-off events. [2023-01-28 09:57:40,636 INFO L131 PetriNetUnfolder]: For 5670/5670 co-relation queries the response was YES. [2023-01-28 09:57:40,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10260 conditions, 3250 events. 2097/3250 cut-off events. For 5670/5670 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 15542 event pairs, 845 based on Foata normal form. 192/3311 useless extension candidates. Maximal degree in co-relation 8477. Up to 1337 conditions per place. [2023-01-28 09:57:40,651 INFO L137 encePairwiseOnDemand]: 364/372 looper letters, 63 selfloop transitions, 5 changer transitions 28/105 dead transitions. [2023-01-28 09:57:40,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 105 transitions, 704 flow [2023-01-28 09:57:40,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:57:40,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:57:40,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1168 transitions. [2023-01-28 09:57:40,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4485407066052227 [2023-01-28 09:57:40,654 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1168 transitions. [2023-01-28 09:57:40,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1168 transitions. [2023-01-28 09:57:40,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:57:40,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1168 transitions. [2023-01-28 09:57:40,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 166.85714285714286) internal successors, (1168), 7 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:40,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 372.0) internal successors, (2976), 8 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:40,658 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 372.0) internal successors, (2976), 8 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:40,659 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 321 flow. Second operand 7 states and 1168 transitions. [2023-01-28 09:57:40,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 105 transitions, 704 flow [2023-01-28 09:57:40,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 105 transitions, 691 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-01-28 09:57:40,667 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 290 flow [2023-01-28 09:57:40,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=290, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2023-01-28 09:57:40,668 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2023-01-28 09:57:40,668 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 290 flow [2023-01-28 09:57:40,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 159.36363636363637) internal successors, (1753), 11 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:40,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:57:40,669 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] [2023-01-28 09:57:40,674 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 09:57:40,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:57:40,874 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 09:57:40,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:57:40,874 INFO L85 PathProgramCache]: Analyzing trace with hash -946785205, now seen corresponding path program 2 times [2023-01-28 09:57:40,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:57:40,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875352616] [2023-01-28 09:57:40,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:57:40,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:57:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:57:41,034 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:57:41,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:57:41,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875352616] [2023-01-28 09:57:41,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875352616] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:57:41,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076631911] [2023-01-28 09:57:41,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 09:57:41,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:57:41,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:57:41,037 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 09:57:41,039 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 09:57:41,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 09:57:41,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:57:41,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 09:57:41,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:57:41,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:57:41,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:57:41,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:57:41,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076631911] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 09:57:41,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 09:57:41,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2023-01-28 09:57:41,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190540078] [2023-01-28 09:57:41,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:57:41,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 09:57:41,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:57:41,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 09:57:41,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-01-28 09:57:41,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 372 [2023-01-28 09:57:41,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 290 flow. Second operand has 6 states, 6 states have (on average 160.33333333333334) internal successors, (962), 6 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:41,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:57:41,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 372 [2023-01-28 09:57:41,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:57:41,431 INFO L130 PetriNetUnfolder]: 1374/2010 cut-off events. [2023-01-28 09:57:41,431 INFO L131 PetriNetUnfolder]: For 4003/4003 co-relation queries the response was YES. [2023-01-28 09:57:41,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7184 conditions, 2010 events. 1374/2010 cut-off events. For 4003/4003 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8101 event pairs, 639 based on Foata normal form. 134/2068 useless extension candidates. Maximal degree in co-relation 7143. Up to 1438 conditions per place. [2023-01-28 09:57:41,441 INFO L137 encePairwiseOnDemand]: 367/372 looper letters, 61 selfloop transitions, 8 changer transitions 0/78 dead transitions. [2023-01-28 09:57:41,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 78 transitions, 523 flow [2023-01-28 09:57:41,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 09:57:41,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 09:57:41,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 989 transitions. [2023-01-28 09:57:41,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44310035842293904 [2023-01-28 09:57:41,444 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 989 transitions. [2023-01-28 09:57:41,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 989 transitions. [2023-01-28 09:57:41,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:57:41,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 989 transitions. [2023-01-28 09:57:41,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 164.83333333333334) internal successors, (989), 6 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:41,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 372.0) internal successors, (2604), 7 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:41,448 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 372.0) internal successors, (2604), 7 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:41,448 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 290 flow. Second operand 6 states and 989 transitions. [2023-01-28 09:57:41,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 78 transitions, 523 flow [2023-01-28 09:57:41,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 78 transitions, 463 flow, removed 18 selfloop flow, removed 9 redundant places. [2023-01-28 09:57:41,457 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 265 flow [2023-01-28 09:57:41,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=265, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2023-01-28 09:57:41,457 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 19 predicate places. [2023-01-28 09:57:41,457 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 265 flow [2023-01-28 09:57:41,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.33333333333334) internal successors, (962), 6 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:41,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:57:41,458 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] [2023-01-28 09:57:41,485 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 09:57:41,663 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 09:57:41,664 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 09:57:41,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:57:41,664 INFO L85 PathProgramCache]: Analyzing trace with hash -247168574, now seen corresponding path program 1 times [2023-01-28 09:57:41,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:57:41,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054743046] [2023-01-28 09:57:41,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:57:41,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:57:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:57:42,021 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:57:42,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:57:42,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054743046] [2023-01-28 09:57:42,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054743046] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:57:42,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908085376] [2023-01-28 09:57:42,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:57:42,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:57:42,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:57:42,022 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 09:57:42,024 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 09:57:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:57:42,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 49 conjunts are in the unsatisfiable core [2023-01-28 09:57:42,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:57:42,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 7 [2023-01-28 09:57:42,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:57:42,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:57:42,337 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:57:42,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2023-01-28 09:57:42,386 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:57:42,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908085376] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:57:42,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:57:42,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2023-01-28 09:57:42,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077221866] [2023-01-28 09:57:42,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:57:42,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 09:57:42,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:57:42,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 09:57:42,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-01-28 09:57:42,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 372 [2023-01-28 09:57:42,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 265 flow. Second operand has 15 states, 15 states have (on average 148.6) internal successors, (2229), 15 states have internal predecessors, (2229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:42,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:57:42,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 372 [2023-01-28 09:57:42,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:57:43,391 INFO L130 PetriNetUnfolder]: 3962/5666 cut-off events. [2023-01-28 09:57:43,391 INFO L131 PetriNetUnfolder]: For 9127/9127 co-relation queries the response was YES. [2023-01-28 09:57:43,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19131 conditions, 5666 events. 3962/5666 cut-off events. For 9127/9127 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 26145 event pairs, 736 based on Foata normal form. 2/5523 useless extension candidates. Maximal degree in co-relation 19095. Up to 2708 conditions per place. [2023-01-28 09:57:43,421 INFO L137 encePairwiseOnDemand]: 361/372 looper letters, 201 selfloop transitions, 60 changer transitions 2/268 dead transitions. [2023-01-28 09:57:43,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 268 transitions, 1678 flow [2023-01-28 09:57:43,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 09:57:43,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 09:57:43,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2551 transitions. [2023-01-28 09:57:43,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4285954301075269 [2023-01-28 09:57:43,426 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2551 transitions. [2023-01-28 09:57:43,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2551 transitions. [2023-01-28 09:57:43,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:57:43,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2551 transitions. [2023-01-28 09:57:43,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 159.4375) internal successors, (2551), 16 states have internal predecessors, (2551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:43,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 372.0) internal successors, (6324), 17 states have internal predecessors, (6324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:43,437 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 372.0) internal successors, (6324), 17 states have internal predecessors, (6324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:43,437 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 265 flow. Second operand 16 states and 2551 transitions. [2023-01-28 09:57:43,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 268 transitions, 1678 flow [2023-01-28 09:57:43,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 268 transitions, 1612 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-01-28 09:57:43,448 INFO L231 Difference]: Finished difference. Result has 84 places, 114 transitions, 787 flow [2023-01-28 09:57:43,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=787, PETRI_PLACES=84, PETRI_TRANSITIONS=114} [2023-01-28 09:57:43,449 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 38 predicate places. [2023-01-28 09:57:43,449 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 114 transitions, 787 flow [2023-01-28 09:57:43,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 148.6) internal successors, (2229), 15 states have internal predecessors, (2229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:43,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:57:43,450 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] [2023-01-28 09:57:43,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 09:57:43,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:57:43,656 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 09:57:43,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:57:43,656 INFO L85 PathProgramCache]: Analyzing trace with hash -383429892, now seen corresponding path program 2 times [2023-01-28 09:57:43,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:57:43,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417916039] [2023-01-28 09:57:43,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:57:43,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:57:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:57:44,213 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:57:44,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:57:44,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417916039] [2023-01-28 09:57:44,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417916039] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:57:44,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884205769] [2023-01-28 09:57:44,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 09:57:44,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:57:44,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:57:44,215 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 09:57:44,217 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 09:57:44,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 09:57:44,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:57:44,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 78 conjunts are in the unsatisfiable core [2023-01-28 09:57:44,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:57:44,383 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-01-28 09:57:44,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 12 treesize of output 27 [2023-01-28 09:57:44,499 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 09:57:44,500 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-01-28 09:57:44,658 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 09:57:44,757 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:57:44,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 15 [2023-01-28 09:57:44,833 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:57:44,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:57:45,314 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:57:45,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 92 [2023-01-28 09:57:45,321 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 67 treesize of output 61 [2023-01-28 09:57:45,325 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 61 treesize of output 55 [2023-01-28 09:57:45,848 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:57:45,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884205769] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:57:45,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:57:45,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 12] total 30 [2023-01-28 09:57:45,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152156976] [2023-01-28 09:57:45,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:57:45,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-01-28 09:57:45,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:57:45,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-01-28 09:57:45,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=895, Unknown=4, NotChecked=0, Total=992 [2023-01-28 09:57:45,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 372 [2023-01-28 09:57:45,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 114 transitions, 787 flow. Second operand has 32 states, 32 states have (on average 119.1875) internal successors, (3814), 32 states have internal predecessors, (3814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:57:45,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:57:45,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 372 [2023-01-28 09:57:45,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:57:56,790 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| c_~X_0~0.base)) (.cse1 (+ 1 c_~s_2~0))) (and (<= 1 c_~n_1~0) (<= (+ c_~X_0~0.base 1) |c_#StackHeapBarrier|) (forall ((v_ArrVal_430 (Array Int Int)) (v_~i_7~0_89 Int)) (or (< v_~i_7~0_89 c_~n_1~0) (<= c_~s_2~0 (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_430) c_~X_0~0.base) (+ c_~X_0~0.offset (* v_~i_7~0_89 4)))) (< 1 v_~i_7~0_89))) (= (select |c_#valid| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) 1) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 1) |c_#StackHeapBarrier|) (= (select |c_#valid| c_~X_0~0.base) 1) (forall ((v_~i_7~0_89 Int)) (or (< v_~i_7~0_89 c_~n_1~0) (< 1 v_~i_7~0_89) (<= c_~s_2~0 (select .cse0 (+ c_~X_0~0.offset (* v_~i_7~0_89 4)))))) (= 0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (forall ((v_ArrVal_430 (Array Int Int)) (v_~i_7~0_89 Int)) (or (< v_~i_7~0_89 c_~n_1~0) (< (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_430) c_~X_0~0.base) (+ c_~X_0~0.offset (* v_~i_7~0_89 4))) .cse1) (< 1 v_~i_7~0_89))) (forall ((v_~i_7~0_89 Int)) (or (< v_~i_7~0_89 c_~n_1~0) (< (select .cse0 (+ c_~X_0~0.offset (* v_~i_7~0_89 4))) .cse1) (< 1 v_~i_7~0_89))) (= c_~X_0~0.offset 0))) is different from false [2023-01-28 09:58:12,330 WARN L222 SmtUtils]: Spent 6.40s on a formula simplification. DAG size of input: 67 DAG size of output: 54 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 09:58:43,824 INFO L130 PetriNetUnfolder]: 11535/16465 cut-off events. [2023-01-28 09:58:43,824 INFO L131 PetriNetUnfolder]: For 50444/50476 co-relation queries the response was YES. [2023-01-28 09:58:43,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65189 conditions, 16465 events. 11535/16465 cut-off events. For 50444/50476 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 90743 event pairs, 1014 based on Foata normal form. 35/15976 useless extension candidates. Maximal degree in co-relation 65146. Up to 3645 conditions per place. [2023-01-28 09:58:43,918 INFO L137 encePairwiseOnDemand]: 351/372 looper letters, 553 selfloop transitions, 436 changer transitions 22/1016 dead transitions. [2023-01-28 09:58:43,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 1016 transitions, 7821 flow [2023-01-28 09:58:43,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-01-28 09:58:43,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2023-01-28 09:58:43,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 9779 transitions. [2023-01-28 09:58:43,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34139784946236557 [2023-01-28 09:58:43,933 INFO L72 ComplementDD]: Start complementDD. Operand 77 states and 9779 transitions. [2023-01-28 09:58:43,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 9779 transitions. [2023-01-28 09:58:43,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:58:43,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 77 states and 9779 transitions. [2023-01-28 09:58:43,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 78 states, 77 states have (on average 127.0) internal successors, (9779), 77 states have internal predecessors, (9779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:43,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 78 states, 78 states have (on average 372.0) internal successors, (29016), 78 states have internal predecessors, (29016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:43,979 INFO L81 ComplementDD]: Finished complementDD. Result has 78 states, 78 states have (on average 372.0) internal successors, (29016), 78 states have internal predecessors, (29016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:43,980 INFO L175 Difference]: Start difference. First operand has 84 places, 114 transitions, 787 flow. Second operand 77 states and 9779 transitions. [2023-01-28 09:58:43,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 1016 transitions, 7821 flow [2023-01-28 09:58:44,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 1016 transitions, 7618 flow, removed 98 selfloop flow, removed 2 redundant places. [2023-01-28 09:58:44,127 INFO L231 Difference]: Finished difference. Result has 191 places, 547 transitions, 5641 flow [2023-01-28 09:58:44,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=77, PETRI_FLOW=5641, PETRI_PLACES=191, PETRI_TRANSITIONS=547} [2023-01-28 09:58:44,129 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 145 predicate places. [2023-01-28 09:58:44,129 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 547 transitions, 5641 flow [2023-01-28 09:58:44,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 119.1875) internal successors, (3814), 32 states have internal predecessors, (3814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:44,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:58:44,130 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] [2023-01-28 09:58:44,141 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 09:58:44,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:58:44,340 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 09:58:44,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:58:44,341 INFO L85 PathProgramCache]: Analyzing trace with hash 2125309184, now seen corresponding path program 3 times [2023-01-28 09:58:44,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:58:44,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620795229] [2023-01-28 09:58:44,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:58:44,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:58:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:58:44,992 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:58:44,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:58:44,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620795229] [2023-01-28 09:58:44,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620795229] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:58:44,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041677783] [2023-01-28 09:58:44,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 09:58:44,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:58:44,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:58:44,995 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 09:58:44,997 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 09:58:45,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 09:58:45,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:58:45,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 72 conjunts are in the unsatisfiable core [2023-01-28 09:58:45,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:58:45,159 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-01-28 09:58:45,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 12 treesize of output 27 [2023-01-28 09:58:45,313 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-01-28 09:58:45,314 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-01-28 09:58:45,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 09:58:45,417 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 14 treesize of output 16 [2023-01-28 09:58:45,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 10 [2023-01-28 09:58:45,474 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:58:45,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:58:45,547 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0)))) (and (forall ((v_ArrVal_493 (Array Int Int))) (<= c_~s_6~0 (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_493) c_~X_0~0.base) .cse0) c_~s_2~0))) (forall ((v_ArrVal_493 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_493) c_~X_0~0.base) .cse0) c_~s_2~0) (+ c_~s_6~0 1))))) is different from false [2023-01-28 09:58:45,568 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0)))) (and (forall ((v_ArrVal_492 (Array Int Int)) (v_ArrVal_493 (Array Int Int))) (< (+ (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t2~0.base| v_ArrVal_492) |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_493) c_~X_0~0.base) .cse0) c_~s_2~0) (+ c_~s_6~0 1))) (forall ((v_ArrVal_492 (Array Int Int)) (v_ArrVal_493 (Array Int Int))) (<= c_~s_6~0 (+ (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t2~0.base| v_ArrVal_492) |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_493) c_~X_0~0.base) .cse0) c_~s_2~0))))) is different from false [2023-01-28 09:58:47,729 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:58:47,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 226 treesize of output 150 [2023-01-28 09:58:47,735 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 31 treesize of output 27 [2023-01-28 09:58:47,739 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 34 treesize of output 26 [2023-01-28 09:58:47,792 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:58:47,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 218 treesize of output 142 [2023-01-28 09:58:47,799 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 29 treesize of output 25 [2023-01-28 09:58:47,803 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 32 treesize of output 24 [2023-01-28 09:58:47,973 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:58:47,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041677783] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:58:47,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:58:47,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 24 [2023-01-28 09:58:47,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832570627] [2023-01-28 09:58:47,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:58:47,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-01-28 09:58:47,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:58:47,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-01-28 09:58:47,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=466, Unknown=3, NotChecked=90, Total=650 [2023-01-28 09:58:47,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 372 [2023-01-28 09:58:47,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 547 transitions, 5641 flow. Second operand has 26 states, 26 states have (on average 125.57692307692308) internal successors, (3265), 26 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:47,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:58:47,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 372 [2023-01-28 09:58:47,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:58:56,354 INFO L130 PetriNetUnfolder]: 15856/22463 cut-off events. [2023-01-28 09:58:56,355 INFO L131 PetriNetUnfolder]: For 554976/555028 co-relation queries the response was YES. [2023-01-28 09:58:56,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159227 conditions, 22463 events. 15856/22463 cut-off events. For 554976/555028 co-relation queries the response was YES. Maximal size of possible extension queue 899. Compared 128210 event pairs, 3094 based on Foata normal form. 32/21818 useless extension candidates. Maximal degree in co-relation 159147. Up to 10128 conditions per place. [2023-01-28 09:58:56,536 INFO L137 encePairwiseOnDemand]: 358/372 looper letters, 696 selfloop transitions, 233 changer transitions 2/936 dead transitions. [2023-01-28 09:58:56,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 936 transitions, 11573 flow [2023-01-28 09:58:56,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 09:58:56,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 09:58:56,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1898 transitions. [2023-01-28 09:58:56,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36443932411674346 [2023-01-28 09:58:56,539 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1898 transitions. [2023-01-28 09:58:56,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1898 transitions. [2023-01-28 09:58:56,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:58:56,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1898 transitions. [2023-01-28 09:58:56,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 135.57142857142858) internal successors, (1898), 14 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:56,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 372.0) internal successors, (5580), 15 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:56,545 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 372.0) internal successors, (5580), 15 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:56,545 INFO L175 Difference]: Start difference. First operand has 191 places, 547 transitions, 5641 flow. Second operand 14 states and 1898 transitions. [2023-01-28 09:58:56,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 936 transitions, 11573 flow [2023-01-28 09:59:00,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 936 transitions, 9892 flow, removed 830 selfloop flow, removed 5 redundant places. [2023-01-28 09:59:00,266 INFO L231 Difference]: Finished difference. Result has 206 places, 628 transitions, 6431 flow [2023-01-28 09:59:00,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=4567, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6431, PETRI_PLACES=206, PETRI_TRANSITIONS=628} [2023-01-28 09:59:00,267 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 160 predicate places. [2023-01-28 09:59:00,267 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 628 transitions, 6431 flow [2023-01-28 09:59:00,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 125.57692307692308) internal successors, (3265), 26 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:00,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:59:00,268 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] [2023-01-28 09:59:00,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 09:59:00,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:59:00,475 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 09:59:00,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:59:00,476 INFO L85 PathProgramCache]: Analyzing trace with hash 885737066, now seen corresponding path program 4 times [2023-01-28 09:59:00,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:59:00,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571378109] [2023-01-28 09:59:00,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:59:00,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:59:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:59:01,007 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:59:01,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:59:01,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571378109] [2023-01-28 09:59:01,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571378109] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:59:01,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135945648] [2023-01-28 09:59:01,007 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 09:59:01,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:59:01,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:59:01,008 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 09:59:01,014 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 09:59:01,124 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 09:59:01,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:59:01,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 61 conjunts are in the unsatisfiable core [2023-01-28 09:59:01,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:59:01,154 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-01-28 09:59:01,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 12 treesize of output 27 [2023-01-28 09:59:01,195 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 09:59:01,196 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-01-28 09:59:01,310 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 09:59:01,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 7 [2023-01-28 09:59:01,391 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:59:01,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:59:01,482 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0)))) (and (forall ((v_ArrVal_554 (Array Int Int))) (<= c_~s_6~0 (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_554) c_~X_0~0.base) .cse0) c_~s_2~0))) (forall ((v_ArrVal_554 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_554) c_~X_0~0.base) .cse0) c_~s_2~0) (+ c_~s_6~0 1))))) is different from false [2023-01-28 09:59:01,499 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:59:01,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 41 [2023-01-28 09:59:01,503 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 19 treesize of output 12 [2023-01-28 09:59:01,512 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 09:59:01,518 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 09:59:01,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2023-01-28 09:59:01,645 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2023-01-28 09:59:01,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135945648] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:59:01,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:59:01,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-01-28 09:59:01,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583507524] [2023-01-28 09:59:01,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:59:01,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 09:59:01,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:59:01,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 09:59:01,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=354, Unknown=1, NotChecked=38, Total=462 [2023-01-28 09:59:01,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 372 [2023-01-28 09:59:01,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 628 transitions, 6431 flow. Second operand has 22 states, 22 states have (on average 131.72727272727272) internal successors, (2898), 22 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:01,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:59:01,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 372 [2023-01-28 09:59:01,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:59:10,628 INFO L130 PetriNetUnfolder]: 17911/25405 cut-off events. [2023-01-28 09:59:10,628 INFO L131 PetriNetUnfolder]: For 718889/718933 co-relation queries the response was YES. [2023-01-28 09:59:10,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183308 conditions, 25405 events. 17911/25405 cut-off events. For 718889/718933 co-relation queries the response was YES. Maximal size of possible extension queue 1042. Compared 147839 event pairs, 6005 based on Foata normal form. 26/24687 useless extension candidates. Maximal degree in co-relation 183218. Up to 21925 conditions per place. [2023-01-28 09:59:10,927 INFO L137 encePairwiseOnDemand]: 354/372 looper letters, 652 selfloop transitions, 118 changer transitions 2/777 dead transitions. [2023-01-28 09:59:10,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 777 transitions, 9733 flow [2023-01-28 09:59:10,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 09:59:10,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 09:59:10,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1671 transitions. [2023-01-28 09:59:10,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3743279569892473 [2023-01-28 09:59:10,929 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1671 transitions. [2023-01-28 09:59:10,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1671 transitions. [2023-01-28 09:59:10,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:59:10,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1671 transitions. [2023-01-28 09:59:10,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 139.25) internal successors, (1671), 12 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:10,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 372.0) internal successors, (4836), 13 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:10,934 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 372.0) internal successors, (4836), 13 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:10,934 INFO L175 Difference]: Start difference. First operand has 206 places, 628 transitions, 6431 flow. Second operand 12 states and 1671 transitions. [2023-01-28 09:59:10,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 777 transitions, 9733 flow [2023-01-28 09:59:15,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 777 transitions, 9386 flow, removed 166 selfloop flow, removed 3 redundant places. [2023-01-28 09:59:15,353 INFO L231 Difference]: Finished difference. Result has 218 places, 701 transitions, 7623 flow [2023-01-28 09:59:15,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=6165, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7623, PETRI_PLACES=218, PETRI_TRANSITIONS=701} [2023-01-28 09:59:15,353 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 172 predicate places. [2023-01-28 09:59:15,354 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 701 transitions, 7623 flow [2023-01-28 09:59:15,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 131.72727272727272) internal successors, (2898), 22 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:15,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:59:15,354 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] [2023-01-28 09:59:15,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-01-28 09:59:15,559 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,SelfDestructingSolverStorable11 [2023-01-28 09:59:15,560 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 09:59:15,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:59:15,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1276588986, now seen corresponding path program 5 times [2023-01-28 09:59:15,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:59:15,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975273504] [2023-01-28 09:59:15,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:59:15,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:59:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:59:15,894 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:59:15,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:59:15,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975273504] [2023-01-28 09:59:15,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975273504] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:59:15,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871447744] [2023-01-28 09:59:15,894 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 09:59:15,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:59:15,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:59:15,895 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 09:59:15,897 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 09:59:16,011 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 09:59:16,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:59:16,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 51 conjunts are in the unsatisfiable core [2023-01-28 09:59:16,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:59:16,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-01-28 09:59:16,159 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:59:16,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:59:16,254 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:59:16,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2023-01-28 09:59:16,354 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:59:16,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871447744] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:59:16,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:59:16,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2023-01-28 09:59:16,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050535692] [2023-01-28 09:59:16,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:59:16,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 09:59:16,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:59:16,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 09:59:16,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-01-28 09:59:16,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 372 [2023-01-28 09:59:16,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 701 transitions, 7623 flow. Second operand has 15 states, 15 states have (on average 148.6) internal successors, (2229), 15 states have internal predecessors, (2229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:16,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:59:16,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 372 [2023-01-28 09:59:16,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:59:21,532 INFO L130 PetriNetUnfolder]: 19171/27148 cut-off events. [2023-01-28 09:59:21,532 INFO L131 PetriNetUnfolder]: For 685304/685374 co-relation queries the response was YES. [2023-01-28 09:59:21,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202013 conditions, 27148 events. 19171/27148 cut-off events. For 685304/685374 co-relation queries the response was YES. Maximal size of possible extension queue 1135. Compared 159671 event pairs, 6548 based on Foata normal form. 42/26406 useless extension candidates. Maximal degree in co-relation 201918. Up to 23893 conditions per place. [2023-01-28 09:59:21,881 INFO L137 encePairwiseOnDemand]: 361/372 looper letters, 732 selfloop transitions, 118 changer transitions 1/856 dead transitions. [2023-01-28 09:59:21,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 856 transitions, 11339 flow [2023-01-28 09:59:21,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 09:59:21,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 09:59:21,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2332 transitions. [2023-01-28 09:59:21,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41792114695340504 [2023-01-28 09:59:21,885 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2332 transitions. [2023-01-28 09:59:21,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2332 transitions. [2023-01-28 09:59:21,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:59:21,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2332 transitions. [2023-01-28 09:59:21,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 155.46666666666667) internal successors, (2332), 15 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:21,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 372.0) internal successors, (5952), 16 states have internal predecessors, (5952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:21,892 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 372.0) internal successors, (5952), 16 states have internal predecessors, (5952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:21,892 INFO L175 Difference]: Start difference. First operand has 218 places, 701 transitions, 7623 flow. Second operand 15 states and 2332 transitions. [2023-01-28 09:59:21,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 856 transitions, 11339 flow [2023-01-28 09:59:26,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 856 transitions, 11058 flow, removed 137 selfloop flow, removed 3 redundant places. [2023-01-28 09:59:26,880 INFO L231 Difference]: Finished difference. Result has 233 places, 751 transitions, 8549 flow [2023-01-28 09:59:26,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=7382, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=8549, PETRI_PLACES=233, PETRI_TRANSITIONS=751} [2023-01-28 09:59:26,881 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 187 predicate places. [2023-01-28 09:59:26,881 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 751 transitions, 8549 flow [2023-01-28 09:59:26,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 148.6) internal successors, (2229), 15 states have internal predecessors, (2229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:26,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:59:26,881 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] [2023-01-28 09:59:26,885 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 09:59:27,081 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,SelfDestructingSolverStorable12 [2023-01-28 09:59:27,082 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 09:59:27,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:59:27,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1951812150, now seen corresponding path program 1 times [2023-01-28 09:59:27,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:59:27,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844129234] [2023-01-28 09:59:27,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:59:27,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:59:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:59:27,458 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:59:27,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:59:27,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844129234] [2023-01-28 09:59:27,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844129234] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:59:27,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841629769] [2023-01-28 09:59:27,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:59:27,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:59:27,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:59:27,460 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 09:59:27,464 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 09:59:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:59:27,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 49 conjunts are in the unsatisfiable core [2023-01-28 09:59:27,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:59:27,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 7 [2023-01-28 09:59:27,742 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:59:27,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:59:27,848 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:59:27,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2023-01-28 09:59:27,873 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:59:27,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841629769] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:59:27,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:59:27,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2023-01-28 09:59:27,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734618204] [2023-01-28 09:59:27,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:59:27,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 09:59:27,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:59:27,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 09:59:27,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-01-28 09:59:27,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 372 [2023-01-28 09:59:27,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 751 transitions, 8549 flow. Second operand has 15 states, 15 states have (on average 148.86666666666667) internal successors, (2233), 15 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:27,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:59:27,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 372 [2023-01-28 09:59:27,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:59:33,646 INFO L130 PetriNetUnfolder]: 20925/29648 cut-off events. [2023-01-28 09:59:33,646 INFO L131 PetriNetUnfolder]: For 808678/808742 co-relation queries the response was YES. [2023-01-28 09:59:33,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226086 conditions, 29648 events. 20925/29648 cut-off events. For 808678/808742 co-relation queries the response was YES. Maximal size of possible extension queue 1266. Compared 176744 event pairs, 7215 based on Foata normal form. 35/28812 useless extension candidates. Maximal degree in co-relation 225987. Up to 26065 conditions per place. [2023-01-28 09:59:34,031 INFO L137 encePairwiseOnDemand]: 362/372 looper letters, 851 selfloop transitions, 74 changer transitions 1/931 dead transitions. [2023-01-28 09:59:34,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 931 transitions, 12576 flow [2023-01-28 09:59:34,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 09:59:34,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 09:59:34,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2522 transitions. [2023-01-28 09:59:34,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4237231182795699 [2023-01-28 09:59:34,034 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2522 transitions. [2023-01-28 09:59:34,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2522 transitions. [2023-01-28 09:59:34,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:59:34,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2522 transitions. [2023-01-28 09:59:34,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 157.625) internal successors, (2522), 16 states have internal predecessors, (2522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:34,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 372.0) internal successors, (6324), 17 states have internal predecessors, (6324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:34,042 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 372.0) internal successors, (6324), 17 states have internal predecessors, (6324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:34,042 INFO L175 Difference]: Start difference. First operand has 233 places, 751 transitions, 8549 flow. Second operand 16 states and 2522 transitions. [2023-01-28 09:59:34,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 931 transitions, 12576 flow [2023-01-28 09:59:40,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 931 transitions, 12217 flow, removed 95 selfloop flow, removed 8 redundant places. [2023-01-28 09:59:40,769 INFO L231 Difference]: Finished difference. Result has 249 places, 793 transitions, 9045 flow [2023-01-28 09:59:40,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=8192, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=696, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=9045, PETRI_PLACES=249, PETRI_TRANSITIONS=793} [2023-01-28 09:59:40,771 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 203 predicate places. [2023-01-28 09:59:40,771 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 793 transitions, 9045 flow [2023-01-28 09:59:40,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 148.86666666666667) internal successors, (2233), 15 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:40,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:59:40,771 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] [2023-01-28 09:59:40,776 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 09:59:40,972 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,SelfDestructingSolverStorable13 [2023-01-28 09:59:40,972 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 09:59:40,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:59:40,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1013267328, now seen corresponding path program 6 times [2023-01-28 09:59:40,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:59:40,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988224324] [2023-01-28 09:59:40,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:59:40,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:59:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:59:41,396 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:59:41,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:59:41,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988224324] [2023-01-28 09:59:41,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988224324] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:59:41,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841306682] [2023-01-28 09:59:41,397 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 09:59:41,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:59:41,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:59:41,398 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 09:59:41,400 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 09:59:41,518 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 09:59:41,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:59:41,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 76 conjunts are in the unsatisfiable core [2023-01-28 09:59:41,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:59:41,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 09:59:41,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 09:59:41,544 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-01-28 09:59:41,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2023-01-28 09:59:41,616 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 13 treesize of output 9 [2023-01-28 09:59:41,648 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 09:59:41,696 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 09:59:41,727 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 09:59:41,727 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-01-28 09:59:41,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 09:59:41,794 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 09:59:41,918 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:59:41,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2023-01-28 09:59:41,989 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:59:41,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:59:42,527 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~i_3~0 1)) (.cse1 (+ c_~X_0~0.offset 4))) (and (forall ((v_~i_3~0_157 Int) (v_ArrVal_731 (Array Int Int)) (v_ArrVal_730 (Array Int Int))) (or (let ((.cse0 (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t2~0.base| v_ArrVal_730) |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_731) c_~X_0~0.base))) (< (select .cse0 .cse1) (+ (select .cse0 (+ (* v_~i_3~0_157 4) c_~X_0~0.offset)) 1 c_~s_2~0))) (< v_~i_3~0_157 1) (< .cse2 v_~i_3~0_157))) (forall ((v_~i_3~0_157 Int) (v_ArrVal_731 (Array Int Int)) (v_ArrVal_730 (Array Int Int))) (or (< v_~i_3~0_157 1) (< .cse2 v_~i_3~0_157) (let ((.cse3 (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t2~0.base| v_ArrVal_730) |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_731) c_~X_0~0.base))) (<= (+ (select .cse3 (+ (* v_~i_3~0_157 4) c_~X_0~0.offset)) c_~s_2~0) (select .cse3 .cse1))))))) is different from false [2023-01-28 09:59:42,579 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:59:42,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841306682] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:59:42,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:59:42,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 9] total 27 [2023-01-28 09:59:42,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690530190] [2023-01-28 09:59:42,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:59:42,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-01-28 09:59:42,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:59:42,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-01-28 09:59:42,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=602, Unknown=8, NotChecked=50, Total=756 [2023-01-28 09:59:42,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 372 [2023-01-28 09:59:42,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 793 transitions, 9045 flow. Second operand has 28 states, 28 states have (on average 118.60714285714286) internal successors, (3321), 28 states have internal predecessors, (3321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:42,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:59:42,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 372 [2023-01-28 09:59:42,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:59:52,049 INFO L130 PetriNetUnfolder]: 25442/36115 cut-off events. [2023-01-28 09:59:52,050 INFO L131 PetriNetUnfolder]: For 1098192/1098264 co-relation queries the response was YES. [2023-01-28 09:59:52,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286381 conditions, 36115 events. 25442/36115 cut-off events. For 1098192/1098264 co-relation queries the response was YES. Maximal size of possible extension queue 1570. Compared 222548 event pairs, 7557 based on Foata normal form. 44/35080 useless extension candidates. Maximal degree in co-relation 286273. Up to 28005 conditions per place. [2023-01-28 09:59:52,785 INFO L137 encePairwiseOnDemand]: 351/372 looper letters, 894 selfloop transitions, 308 changer transitions 8/1215 dead transitions. [2023-01-28 09:59:52,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 1215 transitions, 16840 flow [2023-01-28 09:59:52,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-01-28 09:59:52,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-01-28 09:59:52,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 4270 transitions. [2023-01-28 09:59:52,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33760278304870334 [2023-01-28 09:59:52,789 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 4270 transitions. [2023-01-28 09:59:52,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 4270 transitions. [2023-01-28 09:59:52,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:59:52,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 4270 transitions. [2023-01-28 09:59:52,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 125.58823529411765) internal successors, (4270), 34 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:52,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 372.0) internal successors, (13020), 35 states have internal predecessors, (13020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:52,800 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 372.0) internal successors, (13020), 35 states have internal predecessors, (13020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:52,800 INFO L175 Difference]: Start difference. First operand has 249 places, 793 transitions, 9045 flow. Second operand 34 states and 4270 transitions. [2023-01-28 09:59:52,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 1215 transitions, 16840 flow [2023-01-28 10:00:01,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 1215 transitions, 16552 flow, removed 80 selfloop flow, removed 4 redundant places. [2023-01-28 10:00:02,001 INFO L231 Difference]: Finished difference. Result has 296 places, 993 transitions, 13215 flow [2023-01-28 10:00:02,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=8796, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=793, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=13215, PETRI_PLACES=296, PETRI_TRANSITIONS=993} [2023-01-28 10:00:02,002 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 250 predicate places. [2023-01-28 10:00:02,002 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 993 transitions, 13215 flow [2023-01-28 10:00:02,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 118.60714285714286) internal successors, (3321), 28 states have internal predecessors, (3321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:00:02,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:00:02,003 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] [2023-01-28 10:00:02,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-01-28 10:00:02,203 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,SelfDestructingSolverStorable14 [2023-01-28 10:00:02,204 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 10:00:02,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:00:02,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1357138158, now seen corresponding path program 7 times [2023-01-28 10:00:02,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:00:02,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700047673] [2023-01-28 10:00:02,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:00:02,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:00:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:00:02,607 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:00:02,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:00:02,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700047673] [2023-01-28 10:00:02,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700047673] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:00:02,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298333197] [2023-01-28 10:00:02,607 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 10:00:02,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:00:02,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:00:02,616 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 10:00:02,618 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 10:00:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:00:02,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 54 conjunts are in the unsatisfiable core [2023-01-28 10:00:02,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:00:02,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:00:02,822 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 10:00:02,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 7 [2023-01-28 10:00:02,925 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:00:02,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:00:03,044 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~t_4~0 c_~s_2~0)) (.cse0 (+ c_~X_0~0.offset 4))) (and (forall ((v_ArrVal_788 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_788) c_~X_0~0.base) .cse0) .cse1)) (forall ((v_ArrVal_788 (Array Int Int))) (< .cse1 (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_788) c_~X_0~0.base) .cse0) 1))))) is different from false [2023-01-28 10:00:03,055 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:00:03,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 32 [2023-01-28 10:00:03,061 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 13 treesize of output 9 [2023-01-28 10:00:03,070 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 10:00:03,152 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:00:03,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298333197] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:00:03,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:00:03,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-01-28 10:00:03,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334979564] [2023-01-28 10:00:03,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:00:03,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 10:00:03,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:00:03,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 10:00:03,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=357, Unknown=1, NotChecked=38, Total=462 [2023-01-28 10:00:03,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 372 [2023-01-28 10:00:03,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 993 transitions, 13215 flow. Second operand has 22 states, 22 states have (on average 140.0) internal successors, (3080), 22 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:00:03,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:00:03,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 372 [2023-01-28 10:00:03,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:00:11,950 INFO L130 PetriNetUnfolder]: 25988/36844 cut-off events. [2023-01-28 10:00:11,950 INFO L131 PetriNetUnfolder]: For 1350224/1350284 co-relation queries the response was YES. [2023-01-28 10:00:12,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321494 conditions, 36844 events. 25988/36844 cut-off events. For 1350224/1350284 co-relation queries the response was YES. Maximal size of possible extension queue 1613. Compared 227639 event pairs, 8336 based on Foata normal form. 29/35761 useless extension candidates. Maximal degree in co-relation 321365. Up to 32051 conditions per place. [2023-01-28 10:00:12,681 INFO L137 encePairwiseOnDemand]: 362/372 looper letters, 936 selfloop transitions, 181 changer transitions 1/1123 dead transitions. [2023-01-28 10:00:12,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 1123 transitions, 17679 flow [2023-01-28 10:00:12,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 10:00:12,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 10:00:12,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2066 transitions. [2023-01-28 10:00:12,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3966973886328725 [2023-01-28 10:00:12,684 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2066 transitions. [2023-01-28 10:00:12,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2066 transitions. [2023-01-28 10:00:12,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:00:12,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2066 transitions. [2023-01-28 10:00:12,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 147.57142857142858) internal successors, (2066), 14 states have internal predecessors, (2066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:00:12,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 372.0) internal successors, (5580), 15 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:00:12,689 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 372.0) internal successors, (5580), 15 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:00:12,689 INFO L175 Difference]: Start difference. First operand has 296 places, 993 transitions, 13215 flow. Second operand 14 states and 2066 transitions. [2023-01-28 10:00:12,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 1123 transitions, 17679 flow [2023-01-28 10:00:26,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 1123 transitions, 16498 flow, removed 580 selfloop flow, removed 7 redundant places. [2023-01-28 10:00:26,636 INFO L231 Difference]: Finished difference. Result has 306 places, 1019 transitions, 13309 flow [2023-01-28 10:00:26,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=12214, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=993, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=819, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=13309, PETRI_PLACES=306, PETRI_TRANSITIONS=1019} [2023-01-28 10:00:26,637 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 260 predicate places. [2023-01-28 10:00:26,637 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 1019 transitions, 13309 flow [2023-01-28 10:00:26,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 140.0) internal successors, (3080), 22 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:00:26,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:00:26,638 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] [2023-01-28 10:00:26,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-28 10:00:26,838 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,SelfDestructingSolverStorable15 [2023-01-28 10:00:26,838 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 10:00:26,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:00:26,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1528224822, now seen corresponding path program 2 times [2023-01-28 10:00:26,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:00:26,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407036096] [2023-01-28 10:00:26,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:00:26,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:00:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:00:27,215 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:00:27,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:00:27,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407036096] [2023-01-28 10:00:27,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407036096] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:00:27,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528230192] [2023-01-28 10:00:27,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 10:00:27,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:00:27,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:00:27,234 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 10:00:27,235 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 10:00:27,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 10:00:27,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:00:27,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 55 conjunts are in the unsatisfiable core [2023-01-28 10:00:27,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:00:27,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-01-28 10:00:27,547 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:00:27,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:00:27,656 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:00:27,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2023-01-28 10:00:27,722 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:00:27,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528230192] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:00:27,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:00:27,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 15 [2023-01-28 10:00:27,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366027552] [2023-01-28 10:00:27,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:00:27,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 10:00:27,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:00:27,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 10:00:27,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-01-28 10:00:27,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 372 [2023-01-28 10:00:27,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 1019 transitions, 13309 flow. Second operand has 16 states, 16 states have (on average 143.9375) internal successors, (2303), 16 states have internal predecessors, (2303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:00:27,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:00:27,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 372 [2023-01-28 10:00:27,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:00:36,715 INFO L130 PetriNetUnfolder]: 26368/37442 cut-off events. [2023-01-28 10:00:36,715 INFO L131 PetriNetUnfolder]: For 1291720/1291776 co-relation queries the response was YES. [2023-01-28 10:00:37,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320387 conditions, 37442 events. 26368/37442 cut-off events. For 1291720/1291776 co-relation queries the response was YES. Maximal size of possible extension queue 1665. Compared 232270 event pairs, 9743 based on Foata normal form. 27/36362 useless extension candidates. Maximal degree in co-relation 320256. Up to 34998 conditions per place. [2023-01-28 10:00:37,711 INFO L137 encePairwiseOnDemand]: 361/372 looper letters, 1042 selfloop transitions, 63 changer transitions 1/1111 dead transitions. [2023-01-28 10:00:37,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 1111 transitions, 16790 flow [2023-01-28 10:00:37,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 10:00:37,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 10:00:37,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2249 transitions. [2023-01-28 10:00:37,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40304659498207884 [2023-01-28 10:00:37,714 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2249 transitions. [2023-01-28 10:00:37,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2249 transitions. [2023-01-28 10:00:37,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:00:37,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2249 transitions. [2023-01-28 10:00:37,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 149.93333333333334) internal successors, (2249), 15 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:00:37,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 372.0) internal successors, (5952), 16 states have internal predecessors, (5952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:00:37,719 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 372.0) internal successors, (5952), 16 states have internal predecessors, (5952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:00:37,719 INFO L175 Difference]: Start difference. First operand has 306 places, 1019 transitions, 13309 flow. Second operand 15 states and 2249 transitions. [2023-01-28 10:00:37,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 1111 transitions, 16790 flow [2023-01-28 10:00:48,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 1111 transitions, 16434 flow, removed 72 selfloop flow, removed 7 redundant places. [2023-01-28 10:00:48,058 INFO L231 Difference]: Finished difference. Result has 316 places, 1029 transitions, 13402 flow [2023-01-28 10:00:48,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=12953, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1019, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=962, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=13402, PETRI_PLACES=316, PETRI_TRANSITIONS=1029} [2023-01-28 10:00:48,059 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 270 predicate places. [2023-01-28 10:00:48,059 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 1029 transitions, 13402 flow [2023-01-28 10:00:48,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 143.9375) internal successors, (2303), 16 states have internal predecessors, (2303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:00:48,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:00:48,059 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] [2023-01-28 10:00:48,066 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 10:00:48,264 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,SelfDestructingSolverStorable16 [2023-01-28 10:00:48,264 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 10:00:48,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:00:48,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1143179140, now seen corresponding path program 8 times [2023-01-28 10:00:48,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:00:48,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323659077] [2023-01-28 10:00:48,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:00:48,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:00:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:00:48,695 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:00:48,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:00:48,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323659077] [2023-01-28 10:00:48,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323659077] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:00:48,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634391210] [2023-01-28 10:00:48,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 10:00:48,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:00:48,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:00:48,697 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 10:00:48,698 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 10:00:48,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 10:00:48,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:00:48,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 74 conjunts are in the unsatisfiable core [2023-01-28 10:00:48,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:00:48,849 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-01-28 10:00:48,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 12 treesize of output 27 [2023-01-28 10:00:48,922 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 10:00:48,922 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-01-28 10:00:48,988 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 10:00:49,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 7 [2023-01-28 10:00:49,122 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:00:49,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:00:49,260 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (and (forall ((v_ArrVal_906 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_906) c_~X_0~0.base) .cse0) (+ c_~t_4~0 1 c_~s_2~0))) (forall ((v_ArrVal_906 (Array Int Int))) (<= (+ c_~t_4~0 c_~s_2~0) (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_906) c_~X_0~0.base) .cse0))))) is different from false [2023-01-28 10:00:49,283 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:00:49,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 34 [2023-01-28 10:00:49,286 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 14 treesize of output 10 [2023-01-28 10:00:49,294 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 10:00:49,472 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:00:49,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634391210] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:00:49,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:00:49,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 25 [2023-01-28 10:00:49,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017995125] [2023-01-28 10:00:49,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:00:49,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-28 10:00:49,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:00:49,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-28 10:00:49,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=569, Unknown=1, NotChecked=48, Total=702 [2023-01-28 10:00:49,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 372 [2023-01-28 10:00:49,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 1029 transitions, 13402 flow. Second operand has 27 states, 27 states have (on average 123.48148148148148) internal successors, (3334), 27 states have internal predecessors, (3334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:00:49,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:00:49,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 372 [2023-01-28 10:00:49,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:01:31,819 INFO L130 PetriNetUnfolder]: 81247/114554 cut-off events. [2023-01-28 10:01:31,820 INFO L131 PetriNetUnfolder]: For 4103506/4103588 co-relation queries the response was YES. [2023-01-28 10:01:34,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 985108 conditions, 114554 events. 81247/114554 cut-off events. For 4103506/4103588 co-relation queries the response was YES. Maximal size of possible extension queue 4298. Compared 804104 event pairs, 25853 based on Foata normal form. 53/111174 useless extension candidates. Maximal degree in co-relation 984702. Up to 45804 conditions per place. [2023-01-28 10:01:35,073 INFO L137 encePairwiseOnDemand]: 358/372 looper letters, 2725 selfloop transitions, 854 changer transitions 2/3586 dead transitions. [2023-01-28 10:01:35,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 3586 transitions, 55034 flow [2023-01-28 10:01:35,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-01-28 10:01:35,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-01-28 10:01:35,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 6178 transitions. [2023-01-28 10:01:35,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35335163578128576 [2023-01-28 10:01:35,079 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 6178 transitions. [2023-01-28 10:01:35,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 6178 transitions. [2023-01-28 10:01:35,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:01:35,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 6178 transitions. [2023-01-28 10:01:35,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 131.4468085106383) internal successors, (6178), 47 states have internal predecessors, (6178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:35,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 372.0) internal successors, (17856), 48 states have internal predecessors, (17856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:35,094 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 372.0) internal successors, (17856), 48 states have internal predecessors, (17856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:35,094 INFO L175 Difference]: Start difference. First operand has 316 places, 1029 transitions, 13402 flow. Second operand 47 states and 6178 transitions. [2023-01-28 10:01:35,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 3586 transitions, 55034 flow [2023-01-28 10:03:39,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 3586 transitions, 54379 flow, removed 166 selfloop flow, removed 10 redundant places. [2023-01-28 10:03:39,640 INFO L231 Difference]: Finished difference. Result has 363 places, 1722 transitions, 26815 flow [2023-01-28 10:03:39,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=13175, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1029, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=766, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=26815, PETRI_PLACES=363, PETRI_TRANSITIONS=1722} [2023-01-28 10:03:39,642 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 317 predicate places. [2023-01-28 10:03:39,642 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 1722 transitions, 26815 flow [2023-01-28 10:03:39,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 123.48148148148148) internal successors, (3334), 27 states have internal predecessors, (3334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:03:39,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:03:39,642 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] [2023-01-28 10:03:39,648 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 10:03:39,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:03:39,848 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 10:03:39,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:03:39,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1888339464, now seen corresponding path program 9 times [2023-01-28 10:03:39,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:03:39,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947412346] [2023-01-28 10:03:39,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:03:39,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:03:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:03:40,278 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:03:40,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:03:40,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947412346] [2023-01-28 10:03:40,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947412346] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:03:40,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38840179] [2023-01-28 10:03:40,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 10:03:40,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:03:40,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:03:40,280 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 10:03:40,281 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 10:03:40,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 10:03:40,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:03:40,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 73 conjunts are in the unsatisfiable core [2023-01-28 10:03:40,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:03:40,487 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-01-28 10:03:40,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 12 treesize of output 27 [2023-01-28 10:03:40,578 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 10:03:40,578 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-01-28 10:03:40,757 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 10:03:40,815 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:03:40,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2023-01-28 10:03:40,889 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:03:40,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:03:41,183 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:03:41,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 60 [2023-01-28 10:03:41,188 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 51 treesize of output 47 [2023-01-28 10:03:41,192 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 47 treesize of output 43 [2023-01-28 10:03:41,566 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:03:41,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38840179] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:03:41,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:03:41,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 28 [2023-01-28 10:03:41,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958662191] [2023-01-28 10:03:41,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:03:41,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-28 10:03:41,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:03:41,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-28 10:03:41,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=763, Unknown=5, NotChecked=0, Total=870 [2023-01-28 10:03:41,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 372 [2023-01-28 10:03:41,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 1722 transitions, 26815 flow. Second operand has 30 states, 30 states have (on average 119.46666666666667) internal successors, (3584), 30 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:03:41,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:03:41,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 372 [2023-01-28 10:03:41,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:04:19,250 INFO L130 PetriNetUnfolder]: 84085/118491 cut-off events. [2023-01-28 10:04:19,250 INFO L131 PetriNetUnfolder]: For 4791858/4792016 co-relation queries the response was YES. [2023-01-28 10:04:22,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1060654 conditions, 118491 events. 84085/118491 cut-off events. For 4791858/4792016 co-relation queries the response was YES. Maximal size of possible extension queue 4482. Compared 835654 event pairs, 25172 based on Foata normal form. 69/114975 useless extension candidates. Maximal degree in co-relation 1060251. Up to 98672 conditions per place. [2023-01-28 10:04:23,162 INFO L137 encePairwiseOnDemand]: 356/372 looper letters, 1153 selfloop transitions, 840 changer transitions 2/2000 dead transitions. [2023-01-28 10:04:23,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 2000 transitions, 35722 flow [2023-01-28 10:04:23,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-28 10:04:23,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-28 10:04:23,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3030 transitions. [2023-01-28 10:04:23,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393817204301075 [2023-01-28 10:04:23,165 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3030 transitions. [2023-01-28 10:04:23,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3030 transitions. [2023-01-28 10:04:23,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:04:23,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3030 transitions. [2023-01-28 10:04:23,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 126.25) internal successors, (3030), 24 states have internal predecessors, (3030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:04:23,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 372.0) internal successors, (9300), 25 states have internal predecessors, (9300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:04:23,172 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 372.0) internal successors, (9300), 25 states have internal predecessors, (9300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:04:23,172 INFO L175 Difference]: Start difference. First operand has 363 places, 1722 transitions, 26815 flow. Second operand 24 states and 3030 transitions. [2023-01-28 10:04:23,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 2000 transitions, 35722 flow [2023-01-28 10:06:26,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 2000 transitions, 34133 flow, removed 724 selfloop flow, removed 9 redundant places. [2023-01-28 10:06:26,870 INFO L231 Difference]: Finished difference. Result has 385 places, 1852 transitions, 30610 flow [2023-01-28 10:06:26,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=25544, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1722, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=724, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=928, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=30610, PETRI_PLACES=385, PETRI_TRANSITIONS=1852} [2023-01-28 10:06:26,872 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 339 predicate places. [2023-01-28 10:06:26,872 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 1852 transitions, 30610 flow [2023-01-28 10:06:26,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 119.46666666666667) internal successors, (3584), 30 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:06:26,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:06:26,873 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] [2023-01-28 10:06:26,881 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 10:06:27,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:06:27,078 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 10:06:27,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:06:27,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1201008866, now seen corresponding path program 10 times [2023-01-28 10:06:27,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:06:27,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729716547] [2023-01-28 10:06:27,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:06:27,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:06:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:06:27,404 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:06:27,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:06:27,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729716547] [2023-01-28 10:06:27,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729716547] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:06:27,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345140557] [2023-01-28 10:06:27,404 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 10:06:27,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:06:27,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:06:27,405 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 10:06:27,408 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 10:06:27,538 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 10:06:27,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:06:27,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 49 conjunts are in the unsatisfiable core [2023-01-28 10:06:27,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:06:27,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 7 [2023-01-28 10:06:27,666 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:06:27,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:06:27,736 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:06:27,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 17 [2023-01-28 10:06:27,746 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 10:06:27,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2023-01-28 10:06:27,789 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:06:27,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345140557] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:06:27,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:06:27,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2023-01-28 10:06:27,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969901562] [2023-01-28 10:06:27,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:06:27,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 10:06:27,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:06:27,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 10:06:27,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-01-28 10:06:27,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 372 [2023-01-28 10:06:27,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 1852 transitions, 30610 flow. Second operand has 15 states, 15 states have (on average 148.46666666666667) internal successors, (2227), 15 states have internal predecessors, (2227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:06:27,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:06:27,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 372 [2023-01-28 10:06:27,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:07:07,066 INFO L130 PetriNetUnfolder]: 87841/123719 cut-off events. [2023-01-28 10:07:07,066 INFO L131 PetriNetUnfolder]: For 5414107/5414225 co-relation queries the response was YES. [2023-01-28 10:07:10,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1144737 conditions, 123719 events. 87841/123719 cut-off events. For 5414107/5414225 co-relation queries the response was YES. Maximal size of possible extension queue 4308. Compared 867902 event pairs, 32170 based on Foata normal form. 40/120048 useless extension candidates. Maximal degree in co-relation 1144280. Up to 115229 conditions per place. [2023-01-28 10:07:11,130 INFO L137 encePairwiseOnDemand]: 362/372 looper letters, 1817 selfloop transitions, 209 changer transitions 1/2032 dead transitions. [2023-01-28 10:07:11,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 2032 transitions, 37813 flow [2023-01-28 10:07:11,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 10:07:11,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 10:07:11,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1410 transitions. [2023-01-28 10:07:11,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4211469534050179 [2023-01-28 10:07:11,132 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1410 transitions. [2023-01-28 10:07:11,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1410 transitions. [2023-01-28 10:07:11,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:07:11,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1410 transitions. [2023-01-28 10:07:11,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 156.66666666666666) internal successors, (1410), 9 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:07:11,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 372.0) internal successors, (3720), 10 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:07:11,135 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 372.0) internal successors, (3720), 10 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:07:11,135 INFO L175 Difference]: Start difference. First operand has 385 places, 1852 transitions, 30610 flow. Second operand 9 states and 1410 transitions. [2023-01-28 10:07:11,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 2032 transitions, 37813 flow [2023-01-28 10:09:51,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 2032 transitions, 36776 flow, removed 306 selfloop flow, removed 11 redundant places. [2023-01-28 10:09:51,154 INFO L231 Difference]: Finished difference. Result has 384 places, 1957 transitions, 32628 flow [2023-01-28 10:09:51,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=29603, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1852, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1644, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=32628, PETRI_PLACES=384, PETRI_TRANSITIONS=1957} [2023-01-28 10:09:51,156 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 338 predicate places. [2023-01-28 10:09:51,156 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 1957 transitions, 32628 flow [2023-01-28 10:09:51,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 148.46666666666667) internal successors, (2227), 15 states have internal predecessors, (2227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:09:51,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:09:51,156 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] [2023-01-28 10:09:51,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-01-28 10:09:51,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:09:51,361 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 10:09:51,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:09:51,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1268891532, now seen corresponding path program 3 times [2023-01-28 10:09:51,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:09:51,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662852951] [2023-01-28 10:09:51,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:09:51,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:09:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:09:51,664 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:09:51,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:09:51,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662852951] [2023-01-28 10:09:51,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662852951] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:09:51,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341032643] [2023-01-28 10:09:51,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 10:09:51,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:09:51,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:09:51,666 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 10:09:51,667 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 10:09:51,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 10:09:51,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:09:51,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 61 conjunts are in the unsatisfiable core [2023-01-28 10:09:51,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:09:51,978 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:09:51,978 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 15 [2023-01-28 10:09:52,051 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:09:52,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:09:52,159 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:09:52,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 27 [2023-01-28 10:09:52,388 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:09:52,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341032643] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:09:52,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:09:52,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 9] total 23 [2023-01-28 10:09:52,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125054786] [2023-01-28 10:09:52,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:09:52,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 10:09:52,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:09:52,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 10:09:52,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2023-01-28 10:09:52,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 372 [2023-01-28 10:09:52,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 1957 transitions, 32628 flow. Second operand has 25 states, 25 states have (on average 134.88) internal successors, (3372), 25 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:09:52,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:09:52,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 372 [2023-01-28 10:09:52,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:10:35,198 INFO L130 PetriNetUnfolder]: 92455/130188 cut-off events. [2023-01-28 10:10:35,198 INFO L131 PetriNetUnfolder]: For 5702723/5702953 co-relation queries the response was YES. [2023-01-28 10:10:38,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200529 conditions, 130188 events. 92455/130188 cut-off events. For 5702723/5702953 co-relation queries the response was YES. Maximal size of possible extension queue 4882. Compared 923836 event pairs, 31270 based on Foata normal form. 213/126538 useless extension candidates. Maximal degree in co-relation 1200138. Up to 115906 conditions per place. [2023-01-28 10:10:39,502 INFO L137 encePairwiseOnDemand]: 360/372 looper letters, 1726 selfloop transitions, 473 changer transitions 1/2205 dead transitions. [2023-01-28 10:10:39,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 2205 transitions, 40008 flow [2023-01-28 10:10:39,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 10:10:39,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 10:10:39,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2150 transitions. [2023-01-28 10:10:39,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38530465949820786 [2023-01-28 10:10:39,504 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2150 transitions. [2023-01-28 10:10:39,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2150 transitions. [2023-01-28 10:10:39,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:10:39,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2150 transitions. [2023-01-28 10:10:39,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 143.33333333333334) internal successors, (2150), 15 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:39,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 372.0) internal successors, (5952), 16 states have internal predecessors, (5952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:39,509 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 372.0) internal successors, (5952), 16 states have internal predecessors, (5952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:39,509 INFO L175 Difference]: Start difference. First operand has 384 places, 1957 transitions, 32628 flow. Second operand 15 states and 2150 transitions. [2023-01-28 10:10:39,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 2205 transitions, 40008 flow Received shutdown request... [2023-01-28 10:11:05,226 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 10:11:05,226 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 10:11:05,244 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-01-28 10:11:05,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-01-28 10:11:05,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:11:05,445 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-01-28 10:11:05,446 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2023-01-28 10:11:05,446 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-01-28 10:11:05,447 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-01-28 10:11:05,447 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-01-28 10:11:05,447 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Thread1of1ForFork0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-01-28 10:11:05,447 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Thread1of1ForFork0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2023-01-28 10:11:05,447 INFO L445 BasicCegarLoop]: Path program histogram: [10, 3, 2, 2, 2, 1, 1] [2023-01-28 10:11:05,449 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 10:11:05,449 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 10:11:05,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 10:11:05 BasicIcfg [2023-01-28 10:11:05,450 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 10:11:05,451 INFO L158 Benchmark]: Toolchain (without parser) took 816475.91ms. Allocated memory was 373.3MB in the beginning and 15.5GB in the end (delta: 15.1GB). Free memory was 339.6MB in the beginning and 9.0GB in the end (delta: -8.6GB). Peak memory consumption was 9.7GB. Max. memory is 16.0GB. [2023-01-28 10:11:05,451 INFO L158 Benchmark]: CDTParser took 0.48ms. Allocated memory is still 255.9MB. Free memory is still 213.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 10:11:05,451 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.34ms. Allocated memory is still 373.3MB. Free memory was 339.2MB in the beginning and 327.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 10:11:05,452 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.89ms. Allocated memory is still 373.3MB. Free memory was 327.2MB in the beginning and 324.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 10:11:05,452 INFO L158 Benchmark]: Boogie Preprocessor took 21.30ms. Allocated memory is still 373.3MB. Free memory was 324.8MB in the beginning and 322.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 10:11:05,453 INFO L158 Benchmark]: RCFGBuilder took 538.18ms. Allocated memory is still 373.3MB. Free memory was 322.7MB in the beginning and 279.8MB in the end (delta: 42.8MB). Peak memory consumption was 44.0MB. Max. memory is 16.0GB. [2023-01-28 10:11:05,453 INFO L158 Benchmark]: TraceAbstraction took 815659.20ms. Allocated memory was 373.3MB in the beginning and 15.5GB in the end (delta: 15.1GB). Free memory was 279.0MB in the beginning and 9.0GB in the end (delta: -8.7GB). Peak memory consumption was 9.7GB. Max. memory is 16.0GB. [2023-01-28 10:11:05,454 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48ms. Allocated memory is still 255.9MB. Free memory is still 213.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 224.34ms. Allocated memory is still 373.3MB. Free memory was 339.2MB in the beginning and 327.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 26.89ms. Allocated memory is still 373.3MB. Free memory was 327.2MB in the beginning and 324.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 21.30ms. Allocated memory is still 373.3MB. Free memory was 324.8MB in the beginning and 322.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 538.18ms. Allocated memory is still 373.3MB. Free memory was 322.7MB in the beginning and 279.8MB in the end (delta: 42.8MB). Peak memory consumption was 44.0MB. Max. memory is 16.0GB. * TraceAbstraction took 815659.20ms. Allocated memory was 373.3MB in the beginning and 15.5GB in the end (delta: 15.1GB). Free memory was 279.0MB in the beginning and 9.0GB in the end (delta: -8.7GB). Peak memory consumption was 9.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.9s, 181 PlacesBefore, 46 PlacesAfterwards, 182 TransitionsBefore, 39 TransitionsAfterwards, 2880 CoEnabledTransitionPairs, 8 FixpointIterations, 90 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 19 TrivialYvCompositions, 10 ConcurrentYvCompositions, 8 ChoiceCompositions, 165 TotalNumberOfCompositions, 7881 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5350, independent: 5118, independent conditional: 0, independent unconditional: 5118, dependent: 232, dependent conditional: 0, dependent unconditional: 232, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1658, independent: 1621, independent conditional: 0, independent unconditional: 1621, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5350, independent: 3497, independent conditional: 0, independent unconditional: 3497, dependent: 195, dependent conditional: 0, dependent unconditional: 195, unknown: 1658, unknown conditional: 0, unknown unconditional: 1658] , Statistics on independence cache: Total cache size (in pairs): 188, Positive cache size: 170, Positive conditional cache size: 0, Positive unconditional cache size: 170, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 144]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 139]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 138]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 246 locations, 7 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: 815.5s, OverallIterations: 21, TraceHistogramMax: 2, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 787.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.0s, HoareTripleCheckerStatistics: 185 mSolverCounterUnknown, 5579 SdHoareTripleChecker+Valid, 13.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5579 mSDsluCounter, 437 SdHoareTripleChecker+Invalid, 12.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1712 IncrementalHoareTripleChecker+Unchecked, 350 mSDsCounter, 188 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18384 IncrementalHoareTripleChecker+Invalid, 20469 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 188 mSolverCounterUnsat, 87 mSDtfsCounter, 18384 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1634 GetRequests, 984 SyntacticMatches, 49 SemanticMatches, 601 ConstructedPredicates, 7 IntricatePredicates, 2 DeprecatedPredicates, 6799 ImplicationChecksByTransitivity, 85.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32628occurred in iteration=20, InterpolantAutomatonStates: 339, 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: 0.3s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 16.7s InterpolantComputationTime, 1335 NumberOfCodeBlocks, 1335 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 1884 ConstructedInterpolants, 86 QuantifiedInterpolants, 18581 SizeOfPredicates, 359 NumberOfNonLiveVariables, 5756 ConjunctsInSsa, 844 ConjunctsInUnsatCore, 55 InterpolantComputations, 6 PerfectInterpolantSequences, 117/233 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown