/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 04:31:33,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 04:31:33,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 04:31:33,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 04:31:33,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 04:31:33,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 04:31:33,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 04:31:33,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 04:31:33,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 04:31:33,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 04:31:33,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 04:31:33,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 04:31:33,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 04:31:33,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 04:31:33,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 04:31:33,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 04:31:33,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 04:31:33,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 04:31:33,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 04:31:33,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 04:31:33,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 04:31:33,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 04:31:33,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 04:31:33,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 04:31:33,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 04:31:33,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 04:31:33,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 04:31:33,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 04:31:33,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 04:31:33,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 04:31:33,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 04:31:33,209 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 04:31:33,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 04:31:33,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 04:31:33,211 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 04:31:33,211 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 04:31:33,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 04:31:33,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 04:31:33,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 04:31:33,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 04:31:33,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 04:31:33,213 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 04:31:33,234 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 04:31:33,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 04:31:33,235 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 04:31:33,235 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 04:31:33,235 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 04:31:33,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 04:31:33,235 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 04:31:33,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 04:31:33,236 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 04:31:33,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 04:31:33,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 04:31:33,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 04:31:33,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 04:31:33,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 04:31:33,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 04:31:33,237 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 04:31:33,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 04:31:33,237 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 04:31:33,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 04:31:33,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 04:31:33,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 04:31:33,237 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 04:31:33,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 04:31:33,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 04:31:33,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 04:31:33,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 04:31:33,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 04:31:33,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 04:31:33,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 04:31:33,238 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 04:31:33,238 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 04:31:33,238 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 04:31:33,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 04:31:33,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 04:31:33,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 04:31:33,420 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 04:31:33,420 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 04:31:33,421 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c [2023-01-28 04:31:34,316 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 04:31:34,514 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 04:31:34,514 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c [2023-01-28 04:31:34,520 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0f695043/f145120a2e364a6687e8eca8a8817bc5/FLAG9183af7c8 [2023-01-28 04:31:34,536 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0f695043/f145120a2e364a6687e8eca8a8817bc5 [2023-01-28 04:31:34,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 04:31:34,539 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 04:31:34,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 04:31:34,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 04:31:34,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 04:31:34,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 04:31:34" (1/1) ... [2023-01-28 04:31:34,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f3eecb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:31:34, skipping insertion in model container [2023-01-28 04:31:34,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 04:31:34" (1/1) ... [2023-01-28 04:31:34,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 04:31:34,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 04:31:34,696 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/popl20-more-buffer-series2.wvr.c[4232,4245] [2023-01-28 04:31:34,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 04:31:34,708 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 04:31:34,731 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/popl20-more-buffer-series2.wvr.c[4232,4245] [2023-01-28 04:31:34,738 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 04:31:34,745 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 04:31:34,746 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 04:31:34,750 INFO L208 MainTranslator]: Completed translation [2023-01-28 04:31:34,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:31:34 WrapperNode [2023-01-28 04:31:34,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 04:31:34,751 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 04:31:34,751 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 04:31:34,751 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 04:31:34,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:31:34" (1/1) ... [2023-01-28 04:31:34,762 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:31:34" (1/1) ... [2023-01-28 04:31:34,781 INFO L138 Inliner]: procedures = 27, calls = 83, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 354 [2023-01-28 04:31:34,781 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 04:31:34,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 04:31:34,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 04:31:34,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 04:31:34,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:31:34" (1/1) ... [2023-01-28 04:31:34,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:31:34" (1/1) ... [2023-01-28 04:31:34,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:31:34" (1/1) ... [2023-01-28 04:31:34,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:31:34" (1/1) ... [2023-01-28 04:31:34,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:31:34" (1/1) ... [2023-01-28 04:31:34,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:31:34" (1/1) ... [2023-01-28 04:31:34,804 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:31:34" (1/1) ... [2023-01-28 04:31:34,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:31:34" (1/1) ... [2023-01-28 04:31:34,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 04:31:34,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 04:31:34,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 04:31:34,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 04:31:34,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:31:34" (1/1) ... [2023-01-28 04:31:34,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 04:31:34,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:31:34,829 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 04:31:34,838 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 04:31:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 04:31:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 04:31:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 04:31:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 04:31:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 04:31:34,856 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 04:31:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 04:31:34,856 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 04:31:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 04:31:34,856 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 04:31:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-28 04:31:34,856 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-28 04:31:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 04:31:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 04:31:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 04:31:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 04:31:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 04:31:34,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 04:31:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 04:31:34,858 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 04:31:34,953 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 04:31:34,954 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 04:31:35,360 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 04:31:35,515 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 04:31:35,515 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-01-28 04:31:35,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 04:31:35 BoogieIcfgContainer [2023-01-28 04:31:35,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 04:31:35,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 04:31:35,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 04:31:35,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 04:31:35,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 04:31:34" (1/3) ... [2023-01-28 04:31:35,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20c61172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 04:31:35, skipping insertion in model container [2023-01-28 04:31:35,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:31:34" (2/3) ... [2023-01-28 04:31:35,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20c61172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 04:31:35, skipping insertion in model container [2023-01-28 04:31:35,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 04:31:35" (3/3) ... [2023-01-28 04:31:35,523 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2023-01-28 04:31:35,533 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 04:31:35,534 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 04:31:35,534 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 04:31:35,595 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 04:31:35,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 251 transitions, 534 flow [2023-01-28 04:31:35,708 INFO L130 PetriNetUnfolder]: 22/247 cut-off events. [2023-01-28 04:31:35,708 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 04:31:35,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 247 events. 22/247 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 132 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 210. Up to 2 conditions per place. [2023-01-28 04:31:35,714 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 251 transitions, 534 flow [2023-01-28 04:31:35,721 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 235 transitions, 494 flow [2023-01-28 04:31:35,724 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 04:31:35,736 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 226 places, 235 transitions, 494 flow [2023-01-28 04:31:35,739 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 226 places, 235 transitions, 494 flow [2023-01-28 04:31:35,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 235 transitions, 494 flow [2023-01-28 04:31:35,776 INFO L130 PetriNetUnfolder]: 22/235 cut-off events. [2023-01-28 04:31:35,776 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 04:31:35,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 235 events. 22/235 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 131 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 210. Up to 2 conditions per place. [2023-01-28 04:31:35,778 INFO L119 LiptonReduction]: Number of co-enabled transitions 1824 [2023-01-28 04:31:43,458 INFO L134 LiptonReduction]: Checked pairs total: 2860 [2023-01-28 04:31:43,458 INFO L136 LiptonReduction]: Total number of compositions: 238 [2023-01-28 04:31:43,468 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 04:31:43,471 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;@3a34a622, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 04:31:43,472 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-28 04:31:43,477 INFO L130 PetriNetUnfolder]: 7/36 cut-off events. [2023-01-28 04:31:43,477 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 04:31:43,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:31:43,478 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] [2023-01-28 04:31:43,478 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:31:43,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:31:43,482 INFO L85 PathProgramCache]: Analyzing trace with hash 570355702, now seen corresponding path program 1 times [2023-01-28 04:31:43,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:31:43,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943557548] [2023-01-28 04:31:43,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:43,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:31:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:43,881 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 04:31:43,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:31:43,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943557548] [2023-01-28 04:31:43,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943557548] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:31:43,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:31:43,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 04:31:43,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596623164] [2023-01-28 04:31:43,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:31:43,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 04:31:43,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:31:43,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 04:31:43,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 04:31:43,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 489 [2023-01-28 04:31:43,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:43,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:31:43,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 489 [2023-01-28 04:31:43,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:31:44,165 INFO L130 PetriNetUnfolder]: 1616/2218 cut-off events. [2023-01-28 04:31:44,165 INFO L131 PetriNetUnfolder]: For 145/145 co-relation queries the response was YES. [2023-01-28 04:31:44,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4414 conditions, 2218 events. 1616/2218 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 8933 event pairs, 271 based on Foata normal form. 1/1347 useless extension candidates. Maximal degree in co-relation 3411. Up to 1413 conditions per place. [2023-01-28 04:31:44,181 INFO L137 encePairwiseOnDemand]: 485/489 looper letters, 45 selfloop transitions, 3 changer transitions 1/55 dead transitions. [2023-01-28 04:31:44,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 55 transitions, 247 flow [2023-01-28 04:31:44,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 04:31:44,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 04:31:44,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 713 transitions. [2023-01-28 04:31:44,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48602590320381733 [2023-01-28 04:31:44,196 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 713 transitions. [2023-01-28 04:31:44,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 713 transitions. [2023-01-28 04:31:44,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:31:44,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 713 transitions. [2023-01-28 04:31:44,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:44,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:44,211 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:44,212 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 98 flow. Second operand 3 states and 713 transitions. [2023-01-28 04:31:44,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 55 transitions, 247 flow [2023-01-28 04:31:44,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 55 transitions, 221 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-28 04:31:44,218 INFO L231 Difference]: Finished difference. Result has 38 places, 39 transitions, 101 flow [2023-01-28 04:31:44,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=38, PETRI_TRANSITIONS=39} [2023-01-28 04:31:44,223 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -5 predicate places. [2023-01-28 04:31:44,223 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 101 flow [2023-01-28 04:31:44,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:44,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:31:44,224 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] [2023-01-28 04:31:44,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 04:31:44,225 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:31:44,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:31:44,231 INFO L85 PathProgramCache]: Analyzing trace with hash -775864851, now seen corresponding path program 1 times [2023-01-28 04:31:44,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:31:44,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591113713] [2023-01-28 04:31:44,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:44,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:31:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:44,370 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 04:31:44,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:31:44,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591113713] [2023-01-28 04:31:44,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591113713] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:31:44,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:31:44,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 04:31:44,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497858708] [2023-01-28 04:31:44,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:31:44,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 04:31:44,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:31:44,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 04:31:44,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 04:31:44,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 489 [2023-01-28 04:31:44,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:44,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:31:44,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 489 [2023-01-28 04:31:44,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:31:44,616 INFO L130 PetriNetUnfolder]: 2188/2887 cut-off events. [2023-01-28 04:31:44,616 INFO L131 PetriNetUnfolder]: For 481/481 co-relation queries the response was YES. [2023-01-28 04:31:44,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6429 conditions, 2887 events. 2188/2887 cut-off events. For 481/481 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 11758 event pairs, 596 based on Foata normal form. 76/2329 useless extension candidates. Maximal degree in co-relation 2218. Up to 1820 conditions per place. [2023-01-28 04:31:44,629 INFO L137 encePairwiseOnDemand]: 486/489 looper letters, 55 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-01-28 04:31:44,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 61 transitions, 272 flow [2023-01-28 04:31:44,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 04:31:44,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 04:31:44,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 706 transitions. [2023-01-28 04:31:44,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4812542603953647 [2023-01-28 04:31:44,631 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 706 transitions. [2023-01-28 04:31:44,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 706 transitions. [2023-01-28 04:31:44,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:31:44,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 706 transitions. [2023-01-28 04:31:44,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.33333333333334) internal successors, (706), 3 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:44,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:44,635 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:44,635 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 101 flow. Second operand 3 states and 706 transitions. [2023-01-28 04:31:44,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 61 transitions, 272 flow [2023-01-28 04:31:44,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 61 transitions, 268 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 04:31:44,637 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 112 flow [2023-01-28 04:31:44,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2023-01-28 04:31:44,637 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2023-01-28 04:31:44,638 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 112 flow [2023-01-28 04:31:44,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:44,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:31:44,638 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] [2023-01-28 04:31:44,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 04:31:44,638 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:31:44,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:31:44,640 INFO L85 PathProgramCache]: Analyzing trace with hash -2101749660, now seen corresponding path program 1 times [2023-01-28 04:31:44,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:31:44,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959270740] [2023-01-28 04:31:44,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:44,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:31:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:44,732 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 04:31:44,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:31:44,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959270740] [2023-01-28 04:31:44,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959270740] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:31:44,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:31:44,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 04:31:44,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717943433] [2023-01-28 04:31:44,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:31:44,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 04:31:44,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:31:44,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 04:31:44,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 04:31:44,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 489 [2023-01-28 04:31:44,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:44,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:31:44,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 489 [2023-01-28 04:31:44,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:31:45,013 INFO L130 PetriNetUnfolder]: 2418/3343 cut-off events. [2023-01-28 04:31:45,013 INFO L131 PetriNetUnfolder]: For 1259/1259 co-relation queries the response was YES. [2023-01-28 04:31:45,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7898 conditions, 3343 events. 2418/3343 cut-off events. For 1259/1259 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 15462 event pairs, 747 based on Foata normal form. 100/3124 useless extension candidates. Maximal degree in co-relation 3824. Up to 2227 conditions per place. [2023-01-28 04:31:45,027 INFO L137 encePairwiseOnDemand]: 486/489 looper letters, 59 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-01-28 04:31:45,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 65 transitions, 306 flow [2023-01-28 04:31:45,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 04:31:45,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 04:31:45,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 708 transitions. [2023-01-28 04:31:45,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48261758691206547 [2023-01-28 04:31:45,029 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 708 transitions. [2023-01-28 04:31:45,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 708 transitions. [2023-01-28 04:31:45,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:31:45,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 708 transitions. [2023-01-28 04:31:45,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:45,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:45,064 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:45,064 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 112 flow. Second operand 3 states and 708 transitions. [2023-01-28 04:31:45,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 65 transitions, 306 flow [2023-01-28 04:31:45,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 65 transitions, 303 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 04:31:45,065 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 124 flow [2023-01-28 04:31:45,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2023-01-28 04:31:45,066 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -1 predicate places. [2023-01-28 04:31:45,066 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 124 flow [2023-01-28 04:31:45,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:45,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:31:45,067 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 04:31:45,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 04:31:45,067 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:31:45,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:31:45,067 INFO L85 PathProgramCache]: Analyzing trace with hash 225964666, now seen corresponding path program 1 times [2023-01-28 04:31:45,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:31:45,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641687344] [2023-01-28 04:31:45,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:45,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:31:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:45,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:31:45,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:31:45,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641687344] [2023-01-28 04:31:45,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641687344] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:31:45,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:31:45,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 04:31:45,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882224105] [2023-01-28 04:31:45,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:31:45,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 04:31:45,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:31:45,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 04:31:45,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 04:31:45,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 489 [2023-01-28 04:31:45,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:45,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:31:45,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 489 [2023-01-28 04:31:45,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:31:45,464 INFO L130 PetriNetUnfolder]: 2089/3081 cut-off events. [2023-01-28 04:31:45,464 INFO L131 PetriNetUnfolder]: For 1721/1721 co-relation queries the response was YES. [2023-01-28 04:31:45,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7521 conditions, 3081 events. 2089/3081 cut-off events. For 1721/1721 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 15920 event pairs, 1506 based on Foata normal form. 74/3085 useless extension candidates. Maximal degree in co-relation 3812. Up to 2239 conditions per place. [2023-01-28 04:31:45,477 INFO L137 encePairwiseOnDemand]: 485/489 looper letters, 62 selfloop transitions, 3 changer transitions 0/71 dead transitions. [2023-01-28 04:31:45,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 71 transitions, 336 flow [2023-01-28 04:31:45,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 04:31:45,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 04:31:45,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 808 transitions. [2023-01-28 04:31:45,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4130879345603272 [2023-01-28 04:31:45,485 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 808 transitions. [2023-01-28 04:31:45,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 808 transitions. [2023-01-28 04:31:45,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:31:45,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 808 transitions. [2023-01-28 04:31:45,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:45,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 489.0) internal successors, (2445), 5 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:45,516 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 489.0) internal successors, (2445), 5 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:45,517 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 124 flow. Second operand 4 states and 808 transitions. [2023-01-28 04:31:45,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 71 transitions, 336 flow [2023-01-28 04:31:45,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 71 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 04:31:45,518 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 142 flow [2023-01-28 04:31:45,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-01-28 04:31:45,519 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2023-01-28 04:31:45,519 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 142 flow [2023-01-28 04:31:45,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:45,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:31:45,520 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 04:31:45,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 04:31:45,520 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:31:45,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:31:45,520 INFO L85 PathProgramCache]: Analyzing trace with hash -542120705, now seen corresponding path program 1 times [2023-01-28 04:31:45,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:31:45,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613779363] [2023-01-28 04:31:45,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:45,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:31:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:45,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:31:45,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:31:45,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613779363] [2023-01-28 04:31:45,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613779363] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:31:45,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:31:45,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 04:31:45,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25334809] [2023-01-28 04:31:45,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:31:45,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 04:31:45,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:31:45,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 04:31:45,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 04:31:45,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 489 [2023-01-28 04:31:45,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:45,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:31:45,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 489 [2023-01-28 04:31:45,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:31:46,062 INFO L130 PetriNetUnfolder]: 3315/5119 cut-off events. [2023-01-28 04:31:46,062 INFO L131 PetriNetUnfolder]: For 2789/2789 co-relation queries the response was YES. [2023-01-28 04:31:46,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12116 conditions, 5119 events. 3315/5119 cut-off events. For 2789/2789 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 31151 event pairs, 2550 based on Foata normal form. 280/5300 useless extension candidates. Maximal degree in co-relation 9501. Up to 2950 conditions per place. [2023-01-28 04:31:46,083 INFO L137 encePairwiseOnDemand]: 484/489 looper letters, 86 selfloop transitions, 5 changer transitions 0/97 dead transitions. [2023-01-28 04:31:46,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 97 transitions, 480 flow [2023-01-28 04:31:46,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 04:31:46,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 04:31:46,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1018 transitions. [2023-01-28 04:31:46,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.416359918200409 [2023-01-28 04:31:46,086 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1018 transitions. [2023-01-28 04:31:46,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1018 transitions. [2023-01-28 04:31:46,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:31:46,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1018 transitions. [2023-01-28 04:31:46,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 203.6) internal successors, (1018), 5 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:46,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 489.0) internal successors, (2934), 6 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:46,092 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 489.0) internal successors, (2934), 6 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:46,092 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 142 flow. Second operand 5 states and 1018 transitions. [2023-01-28 04:31:46,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 97 transitions, 480 flow [2023-01-28 04:31:46,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 97 transitions, 476 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 04:31:46,097 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 171 flow [2023-01-28 04:31:46,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2023-01-28 04:31:46,099 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2023-01-28 04:31:46,099 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 171 flow [2023-01-28 04:31:46,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:46,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:31:46,100 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 04:31:46,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 04:31:46,100 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:31:46,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:31:46,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1581329091, now seen corresponding path program 1 times [2023-01-28 04:31:46,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:31:46,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057265438] [2023-01-28 04:31:46,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:46,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:31:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:46,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:31:46,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:31:46,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057265438] [2023-01-28 04:31:46,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057265438] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:31:46,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:31:46,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 04:31:46,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85906653] [2023-01-28 04:31:46,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:31:46,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 04:31:46,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:31:46,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 04:31:46,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-28 04:31:46,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 489 [2023-01-28 04:31:46,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 171 flow. Second operand has 6 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:46,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:31:46,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 489 [2023-01-28 04:31:46,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:31:47,570 INFO L130 PetriNetUnfolder]: 13213/18670 cut-off events. [2023-01-28 04:31:47,570 INFO L131 PetriNetUnfolder]: For 7229/7229 co-relation queries the response was YES. [2023-01-28 04:31:47,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43154 conditions, 18670 events. 13213/18670 cut-off events. For 7229/7229 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 100772 event pairs, 5320 based on Foata normal form. 248/18916 useless extension candidates. Maximal degree in co-relation 30016. Up to 6719 conditions per place. [2023-01-28 04:31:47,631 INFO L137 encePairwiseOnDemand]: 483/489 looper letters, 114 selfloop transitions, 8 changer transitions 0/122 dead transitions. [2023-01-28 04:31:47,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 122 transitions, 639 flow [2023-01-28 04:31:47,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 04:31:47,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 04:31:47,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1159 transitions. [2023-01-28 04:31:47,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3950238582140423 [2023-01-28 04:31:47,635 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1159 transitions. [2023-01-28 04:31:47,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1159 transitions. [2023-01-28 04:31:47,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:31:47,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1159 transitions. [2023-01-28 04:31:47,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 193.16666666666666) internal successors, (1159), 6 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:47,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:47,641 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:47,641 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 171 flow. Second operand 6 states and 1159 transitions. [2023-01-28 04:31:47,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 122 transitions, 639 flow [2023-01-28 04:31:47,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 122 transitions, 634 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 04:31:47,646 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 203 flow [2023-01-28 04:31:47,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=203, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2023-01-28 04:31:47,647 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2023-01-28 04:31:47,647 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 203 flow [2023-01-28 04:31:47,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:47,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:31:47,647 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 04:31:47,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 04:31:47,647 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:31:47,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:31:47,648 INFO L85 PathProgramCache]: Analyzing trace with hash -547964448, now seen corresponding path program 1 times [2023-01-28 04:31:47,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:31:47,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89445259] [2023-01-28 04:31:47,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:47,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:31:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:47,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:31:47,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:31:47,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89445259] [2023-01-28 04:31:47,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89445259] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:31:47,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:31:47,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 04:31:47,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337199618] [2023-01-28 04:31:47,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:31:47,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 04:31:47,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:31:47,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 04:31:47,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-28 04:31:47,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 489 [2023-01-28 04:31:47,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 203 flow. Second operand has 6 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:47,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:31:47,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 489 [2023-01-28 04:31:47,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:31:48,877 INFO L130 PetriNetUnfolder]: 11061/15744 cut-off events. [2023-01-28 04:31:48,877 INFO L131 PetriNetUnfolder]: For 7142/7142 co-relation queries the response was YES. [2023-01-28 04:31:48,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37303 conditions, 15744 events. 11061/15744 cut-off events. For 7142/7142 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 84474 event pairs, 5298 based on Foata normal form. 192/15936 useless extension candidates. Maximal degree in co-relation 26486. Up to 7175 conditions per place. [2023-01-28 04:31:48,918 INFO L137 encePairwiseOnDemand]: 483/489 looper letters, 66 selfloop transitions, 6 changer transitions 37/109 dead transitions. [2023-01-28 04:31:48,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 109 transitions, 581 flow [2023-01-28 04:31:48,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 04:31:48,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 04:31:48,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1150 transitions. [2023-01-28 04:31:48,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39195637355146556 [2023-01-28 04:31:48,921 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1150 transitions. [2023-01-28 04:31:48,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1150 transitions. [2023-01-28 04:31:48,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:31:48,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1150 transitions. [2023-01-28 04:31:48,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 191.66666666666666) internal successors, (1150), 6 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:48,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:48,927 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:48,927 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 203 flow. Second operand 6 states and 1150 transitions. [2023-01-28 04:31:48,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 109 transitions, 581 flow [2023-01-28 04:31:48,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 109 transitions, 571 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-28 04:31:48,933 INFO L231 Difference]: Finished difference. Result has 62 places, 47 transitions, 198 flow [2023-01-28 04:31:48,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=62, PETRI_TRANSITIONS=47} [2023-01-28 04:31:48,933 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2023-01-28 04:31:48,933 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 47 transitions, 198 flow [2023-01-28 04:31:48,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:48,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:31:48,934 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 04:31:48,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 04:31:48,934 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:31:48,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:31:48,935 INFO L85 PathProgramCache]: Analyzing trace with hash -722686443, now seen corresponding path program 1 times [2023-01-28 04:31:48,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:31:48,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328087792] [2023-01-28 04:31:48,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:48,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:31:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:49,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:31:49,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:31:49,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328087792] [2023-01-28 04:31:49,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328087792] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:31:49,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:31:49,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 04:31:49,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550928920] [2023-01-28 04:31:49,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:31:49,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 04:31:49,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:31:49,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 04:31:49,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-01-28 04:31:49,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 489 [2023-01-28 04:31:49,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 47 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 180.5) internal successors, (1083), 6 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:49,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:31:49,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 489 [2023-01-28 04:31:49,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:31:49,841 INFO L130 PetriNetUnfolder]: 6113/8458 cut-off events. [2023-01-28 04:31:49,841 INFO L131 PetriNetUnfolder]: For 5467/5467 co-relation queries the response was YES. [2023-01-28 04:31:49,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21650 conditions, 8458 events. 6113/8458 cut-off events. For 5467/5467 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 38808 event pairs, 1120 based on Foata normal form. 496/8954 useless extension candidates. Maximal degree in co-relation 17572. Up to 5246 conditions per place. [2023-01-28 04:31:49,864 INFO L137 encePairwiseOnDemand]: 483/489 looper letters, 75 selfloop transitions, 7 changer transitions 1/83 dead transitions. [2023-01-28 04:31:49,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 83 transitions, 482 flow [2023-01-28 04:31:49,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 04:31:49,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 04:31:49,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1122 transitions. [2023-01-28 04:31:49,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3824130879345603 [2023-01-28 04:31:49,867 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1122 transitions. [2023-01-28 04:31:49,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1122 transitions. [2023-01-28 04:31:49,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:31:49,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1122 transitions. [2023-01-28 04:31:49,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:49,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:49,872 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:49,872 INFO L175 Difference]: Start difference. First operand has 62 places, 47 transitions, 198 flow. Second operand 6 states and 1122 transitions. [2023-01-28 04:31:49,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 83 transitions, 482 flow [2023-01-28 04:31:49,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 83 transitions, 456 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-01-28 04:31:49,875 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 194 flow [2023-01-28 04:31:49,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=194, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2023-01-28 04:31:49,876 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 16 predicate places. [2023-01-28 04:31:49,876 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 194 flow [2023-01-28 04:31:49,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 180.5) internal successors, (1083), 6 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:49,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:31:49,876 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 04:31:49,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 04:31:49,877 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:31:49,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:31:49,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1709483178, now seen corresponding path program 1 times [2023-01-28 04:31:49,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:31:49,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138339777] [2023-01-28 04:31:49,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:49,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:31:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:50,092 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:31:50,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:31:50,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138339777] [2023-01-28 04:31:50,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138339777] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:31:50,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:31:50,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 04:31:50,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145691761] [2023-01-28 04:31:50,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:31:50,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 04:31:50,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:31:50,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 04:31:50,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 04:31:50,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 489 [2023-01-28 04:31:50,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 176.5) internal successors, (1059), 6 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:50,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:31:50,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 489 [2023-01-28 04:31:50,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:31:50,606 INFO L130 PetriNetUnfolder]: 4654/6363 cut-off events. [2023-01-28 04:31:50,606 INFO L131 PetriNetUnfolder]: For 4918/4918 co-relation queries the response was YES. [2023-01-28 04:31:50,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16805 conditions, 6363 events. 4654/6363 cut-off events. For 4918/4918 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 26901 event pairs, 1274 based on Foata normal form. 432/6795 useless extension candidates. Maximal degree in co-relation 16776. Up to 2526 conditions per place. [2023-01-28 04:31:50,620 INFO L137 encePairwiseOnDemand]: 482/489 looper letters, 89 selfloop transitions, 7 changer transitions 12/108 dead transitions. [2023-01-28 04:31:50,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 108 transitions, 625 flow [2023-01-28 04:31:50,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 04:31:50,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 04:31:50,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1293 transitions. [2023-01-28 04:31:50,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37773882559158634 [2023-01-28 04:31:50,623 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1293 transitions. [2023-01-28 04:31:50,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1293 transitions. [2023-01-28 04:31:50,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:31:50,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1293 transitions. [2023-01-28 04:31:50,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 184.71428571428572) internal successors, (1293), 7 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:50,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 489.0) internal successors, (3912), 8 states have internal predecessors, (3912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:50,629 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 489.0) internal successors, (3912), 8 states have internal predecessors, (3912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:50,629 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 194 flow. Second operand 7 states and 1293 transitions. [2023-01-28 04:31:50,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 108 transitions, 625 flow [2023-01-28 04:31:50,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 108 transitions, 580 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-01-28 04:31:50,631 INFO L231 Difference]: Finished difference. Result has 61 places, 47 transitions, 193 flow [2023-01-28 04:31:50,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=193, PETRI_PLACES=61, PETRI_TRANSITIONS=47} [2023-01-28 04:31:50,632 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2023-01-28 04:31:50,632 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 47 transitions, 193 flow [2023-01-28 04:31:50,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.5) internal successors, (1059), 6 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:50,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:31:50,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:31:50,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 04:31:50,632 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:31:50,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:31:50,633 INFO L85 PathProgramCache]: Analyzing trace with hash 390605791, now seen corresponding path program 1 times [2023-01-28 04:31:50,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:31:50,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837652001] [2023-01-28 04:31:50,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:50,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:31:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:50,766 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-28 04:31:50,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:31:50,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837652001] [2023-01-28 04:31:50,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837652001] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:31:50,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383116871] [2023-01-28 04:31:50,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:50,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:31:50,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:31:50,769 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 04:31:50,770 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 04:31:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:50,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 04:31:50,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:31:51,044 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 04:31:51,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:31:51,169 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 04:31:51,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383116871] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 04:31:51,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 04:31:51,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 5] total 9 [2023-01-28 04:31:51,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91130014] [2023-01-28 04:31:51,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:31:51,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 04:31:51,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:31:51,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 04:31:51,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-01-28 04:31:51,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 489 [2023-01-28 04:31:51,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 47 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 212.5) internal successors, (1275), 6 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:51,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:31:51,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 489 [2023-01-28 04:31:51,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:31:51,644 INFO L130 PetriNetUnfolder]: 3650/4900 cut-off events. [2023-01-28 04:31:51,644 INFO L131 PetriNetUnfolder]: For 4069/4269 co-relation queries the response was YES. [2023-01-28 04:31:51,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13923 conditions, 4900 events. 3650/4900 cut-off events. For 4069/4269 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 20113 event pairs, 743 based on Foata normal form. 326/5224 useless extension candidates. Maximal degree in co-relation 13893. Up to 1568 conditions per place. [2023-01-28 04:31:51,665 INFO L137 encePairwiseOnDemand]: 483/489 looper letters, 94 selfloop transitions, 13 changer transitions 0/109 dead transitions. [2023-01-28 04:31:51,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 109 transitions, 607 flow [2023-01-28 04:31:51,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 04:31:51,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 04:31:51,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1334 transitions. [2023-01-28 04:31:51,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4546693933197001 [2023-01-28 04:31:51,668 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1334 transitions. [2023-01-28 04:31:51,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1334 transitions. [2023-01-28 04:31:51,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:31:51,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1334 transitions. [2023-01-28 04:31:51,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 222.33333333333334) internal successors, (1334), 6 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:51,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:51,674 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:51,674 INFO L175 Difference]: Start difference. First operand has 61 places, 47 transitions, 193 flow. Second operand 6 states and 1334 transitions. [2023-01-28 04:31:51,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 109 transitions, 607 flow [2023-01-28 04:31:51,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 109 transitions, 584 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-01-28 04:31:51,679 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 262 flow [2023-01-28 04:31:51,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2023-01-28 04:31:51,680 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2023-01-28 04:31:51,680 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 262 flow [2023-01-28 04:31:51,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 212.5) internal successors, (1275), 6 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:51,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:31:51,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:31:51,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 04:31:51,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-01-28 04:31:51,885 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:31:51,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:31:51,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1897050288, now seen corresponding path program 1 times [2023-01-28 04:31:51,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:31:51,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189831621] [2023-01-28 04:31:51,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:51,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:31:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:52,047 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 04:31:52,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:31:52,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189831621] [2023-01-28 04:31:52,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189831621] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:31:52,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217346430] [2023-01-28 04:31:52,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:52,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:31:52,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:31:52,048 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 04:31:52,057 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 04:31:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:52,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 04:31:52,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:31:52,229 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 04:31:52,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 04:31:52,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217346430] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:31:52,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 04:31:52,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2023-01-28 04:31:52,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602947394] [2023-01-28 04:31:52,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:31:52,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 04:31:52,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:31:52,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 04:31:52,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-01-28 04:31:52,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 489 [2023-01-28 04:31:52,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 262 flow. Second operand has 6 states, 6 states have (on average 212.5) internal successors, (1275), 6 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:52,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:31:52,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 489 [2023-01-28 04:31:52,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:31:53,229 INFO L130 PetriNetUnfolder]: 8256/11047 cut-off events. [2023-01-28 04:31:53,230 INFO L131 PetriNetUnfolder]: For 18797/18997 co-relation queries the response was YES. [2023-01-28 04:31:53,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36185 conditions, 11047 events. 8256/11047 cut-off events. For 18797/18997 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 52107 event pairs, 1103 based on Foata normal form. 582/11627 useless extension candidates. Maximal degree in co-relation 36155. Up to 3770 conditions per place. [2023-01-28 04:31:53,271 INFO L137 encePairwiseOnDemand]: 480/489 looper letters, 149 selfloop transitions, 35 changer transitions 0/186 dead transitions. [2023-01-28 04:31:53,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 186 transitions, 1362 flow [2023-01-28 04:31:53,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 04:31:53,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 04:31:53,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1780 transitions. [2023-01-28 04:31:53,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4550102249488753 [2023-01-28 04:31:53,275 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1780 transitions. [2023-01-28 04:31:53,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1780 transitions. [2023-01-28 04:31:53,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:31:53,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1780 transitions. [2023-01-28 04:31:53,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 222.5) internal successors, (1780), 8 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:53,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 489.0) internal successors, (4401), 9 states have internal predecessors, (4401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:53,283 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 489.0) internal successors, (4401), 9 states have internal predecessors, (4401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:53,283 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 262 flow. Second operand 8 states and 1780 transitions. [2023-01-28 04:31:53,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 186 transitions, 1362 flow [2023-01-28 04:31:53,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 186 transitions, 1332 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-01-28 04:31:53,311 INFO L231 Difference]: Finished difference. Result has 72 places, 86 transitions, 641 flow [2023-01-28 04:31:53,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=641, PETRI_PLACES=72, PETRI_TRANSITIONS=86} [2023-01-28 04:31:53,311 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 29 predicate places. [2023-01-28 04:31:53,311 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 86 transitions, 641 flow [2023-01-28 04:31:53,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 212.5) internal successors, (1275), 6 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:53,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:31:53,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:31:53,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-28 04:31:53,519 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,SelfDestructingSolverStorable10 [2023-01-28 04:31:53,519 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:31:53,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:31:53,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1051748402, now seen corresponding path program 2 times [2023-01-28 04:31:53,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:31:53,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541673993] [2023-01-28 04:31:53,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:53,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:31:53,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:53,745 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-28 04:31:53,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:31:53,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541673993] [2023-01-28 04:31:53,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541673993] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:31:53,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:31:53,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 04:31:53,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539195964] [2023-01-28 04:31:53,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:31:53,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 04:31:53,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:31:53,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 04:31:53,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 04:31:53,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 489 [2023-01-28 04:31:53,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 86 transitions, 641 flow. Second operand has 6 states, 6 states have (on average 176.83333333333334) internal successors, (1061), 6 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:53,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:31:53,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 489 [2023-01-28 04:31:53,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:31:55,129 INFO L130 PetriNetUnfolder]: 10548/14117 cut-off events. [2023-01-28 04:31:55,130 INFO L131 PetriNetUnfolder]: For 53594/53594 co-relation queries the response was YES. [2023-01-28 04:31:55,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59839 conditions, 14117 events. 10548/14117 cut-off events. For 53594/53594 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 64251 event pairs, 2245 based on Foata normal form. 368/14484 useless extension candidates. Maximal degree in co-relation 59803. Up to 10817 conditions per place. [2023-01-28 04:31:55,201 INFO L137 encePairwiseOnDemand]: 482/489 looper letters, 160 selfloop transitions, 8 changer transitions 0/168 dead transitions. [2023-01-28 04:31:55,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 168 transitions, 1603 flow [2023-01-28 04:31:55,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 04:31:55,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 04:31:55,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1283 transitions. [2023-01-28 04:31:55,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3748174116272276 [2023-01-28 04:31:55,205 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1283 transitions. [2023-01-28 04:31:55,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1283 transitions. [2023-01-28 04:31:55,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:31:55,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1283 transitions. [2023-01-28 04:31:55,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 183.28571428571428) internal successors, (1283), 7 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:55,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 489.0) internal successors, (3912), 8 states have internal predecessors, (3912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:55,210 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 489.0) internal successors, (3912), 8 states have internal predecessors, (3912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:55,210 INFO L175 Difference]: Start difference. First operand has 72 places, 86 transitions, 641 flow. Second operand 7 states and 1283 transitions. [2023-01-28 04:31:55,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 168 transitions, 1603 flow [2023-01-28 04:31:55,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 168 transitions, 1598 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-28 04:31:55,370 INFO L231 Difference]: Finished difference. Result has 79 places, 89 transitions, 686 flow [2023-01-28 04:31:55,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=686, PETRI_PLACES=79, PETRI_TRANSITIONS=89} [2023-01-28 04:31:55,370 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2023-01-28 04:31:55,370 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 89 transitions, 686 flow [2023-01-28 04:31:55,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.83333333333334) internal successors, (1061), 6 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:55,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:31:55,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:31:55,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 04:31:55,371 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:31:55,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:31:55,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1917592064, now seen corresponding path program 1 times [2023-01-28 04:31:55,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:31:55,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582977829] [2023-01-28 04:31:55,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:55,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:31:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:57,260 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:31:57,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:31:57,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582977829] [2023-01-28 04:31:57,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582977829] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:31:57,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760065812] [2023-01-28 04:31:57,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:57,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:31:57,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:31:57,265 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 04:31:57,267 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 04:31:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:57,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 101 conjunts are in the unsatisfiable core [2023-01-28 04:31:57,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:31:57,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:31:57,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:31:57,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:31:57,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:31:57,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:31:57,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:31:57,497 INFO L321 Elim1Store]: treesize reduction 88, result has 29.6 percent of original size [2023-01-28 04:31:57,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 28 treesize of output 54 [2023-01-28 04:31:57,603 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 15 treesize of output 11 [2023-01-28 04:31:57,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:31:57,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:31:57,727 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-01-28 04:31:57,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 39 [2023-01-28 04:31:57,827 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 04:31:57,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:31:57,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:31:57,982 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:31:57,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2023-01-28 04:31:58,130 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 04:31:58,253 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 04:31:58,501 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 04:31:58,715 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 04:31:58,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:31:58,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:31:58,987 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 04:31:58,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 29 [2023-01-28 04:31:59,503 INFO L321 Elim1Store]: treesize reduction 118, result has 26.7 percent of original size [2023-01-28 04:31:59,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 54 treesize of output 56 [2023-01-28 04:31:59,539 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:31:59,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:32:07,082 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:32:07,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 236 treesize of output 176 [2023-01-28 04:32:07,890 INFO L321 Elim1Store]: treesize reduction 76, result has 67.9 percent of original size [2023-01-28 04:32:07,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 137744367586 treesize of output 136553128066 [2023-01-28 04:35:36,474 WARN L222 SmtUtils]: Spent 3.48m on a formula simplification. DAG size of input: 7292 DAG size of output: 1581 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-28 04:35:40,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:35:40,510 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:35:40,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 241954 treesize of output 228262 [2023-01-28 04:35:44,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:35:44,747 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:35:44,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 228130 treesize of output 226534 [2023-01-28 04:35:49,135 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:35:49,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 202988 treesize of output 158014 [2023-01-28 04:35:53,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:35:53,646 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:35:53,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 181346 treesize of output 178022 [2023-01-28 04:35:58,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:35:58,384 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:35:58,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 177890 treesize of output 171110 [2023-01-28 04:36:03,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:36:03,328 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:36:03,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 170978 treesize of output 143462 [2023-01-28 04:36:08,319 INFO L208 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-01-28 04:42:44,008 WARN L222 SmtUtils]: Spent 5.46s on a formula simplification. DAG size of input: 1389 DAG size of output: 1500 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-28 04:44:51,583 WARN L222 SmtUtils]: Spent 7.65s on a formula simplification. DAG size of input: 1337 DAG size of output: 1504 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-01-28 04:45:41,673 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 04:45:41,673 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 04:45:41,684 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-28 04:45:41,686 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-01-28 04:45:41,691 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 04:45:41,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:45:41,886 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 38 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 20ms.. [2023-01-28 04:45:41,888 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-01-28 04:45:41,888 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-01-28 04:45:41,888 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-01-28 04:45:41,888 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-01-28 04:45:41,888 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:45:41,893 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 04:45:41,893 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 04:45:41,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 04:45:41 BasicIcfg [2023-01-28 04:45:41,895 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 04:45:41,895 INFO L158 Benchmark]: Toolchain (without parser) took 847356.40ms. Allocated memory was 329.3MB in the beginning and 2.4GB in the end (delta: 2.1GB). Free memory was 299.2MB in the beginning and 2.0GB in the end (delta: -1.7GB). Peak memory consumption was 1.7GB. Max. memory is 16.0GB. [2023-01-28 04:45:41,895 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 213.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 04:45:41,895 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.76ms. Allocated memory is still 329.3MB. Free memory was 298.8MB in the beginning and 285.9MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 04:45:41,895 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.26ms. Allocated memory is still 329.3MB. Free memory was 285.9MB in the beginning and 283.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 04:45:41,895 INFO L158 Benchmark]: Boogie Preprocessor took 26.57ms. Allocated memory is still 329.3MB. Free memory was 283.1MB in the beginning and 280.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 04:45:41,896 INFO L158 Benchmark]: RCFGBuilder took 708.96ms. Allocated memory is still 329.3MB. Free memory was 280.6MB in the beginning and 296.3MB in the end (delta: -15.7MB). Peak memory consumption was 57.6MB. Max. memory is 16.0GB. [2023-01-28 04:45:41,896 INFO L158 Benchmark]: TraceAbstraction took 846375.84ms. Allocated memory was 329.3MB in the beginning and 2.4GB in the end (delta: 2.1GB). Free memory was 296.3MB in the beginning and 2.0GB in the end (delta: -1.7GB). Peak memory consumption was 1.7GB. Max. memory is 16.0GB. [2023-01-28 04:45:41,897 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 213.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 209.76ms. Allocated memory is still 329.3MB. Free memory was 298.8MB in the beginning and 285.9MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 30.26ms. Allocated memory is still 329.3MB. Free memory was 285.9MB in the beginning and 283.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.57ms. Allocated memory is still 329.3MB. Free memory was 283.1MB in the beginning and 280.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 708.96ms. Allocated memory is still 329.3MB. Free memory was 280.6MB in the beginning and 296.3MB in the end (delta: -15.7MB). Peak memory consumption was 57.6MB. Max. memory is 16.0GB. * TraceAbstraction took 846375.84ms. Allocated memory was 329.3MB in the beginning and 2.4GB in the end (delta: 2.1GB). Free memory was 296.3MB in the beginning and 2.0GB in the end (delta: -1.7GB). Peak memory consumption was 1.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.7s, 226 PlacesBefore, 43 PlacesAfterwards, 235 TransitionsBefore, 37 TransitionsAfterwards, 1824 CoEnabledTransitionPairs, 7 FixpointIterations, 153 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 35 TrivialYvCompositions, 8 ConcurrentYvCompositions, 15 ChoiceCompositions, 238 TotalNumberOfCompositions, 2860 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2344, independent: 2292, independent conditional: 0, independent unconditional: 2292, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 952, independent: 935, independent conditional: 0, independent unconditional: 935, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2344, independent: 1357, independent conditional: 0, independent unconditional: 1357, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 952, unknown conditional: 0, unknown unconditional: 952] , Statistics on independence cache: Total cache size (in pairs): 134, Positive cache size: 128, Positive conditional cache size: 0, Positive unconditional cache size: 128, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 151]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 38 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 20ms.. - TimeoutResultAtElement [Line: 141]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 38 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 20ms.. - TimeoutResultAtElement [Line: 143]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 38 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 20ms.. - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 38 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 20ms.. - TimeoutResultAtElement [Line: 144]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 38 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 20ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 262 locations, 5 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: 846.3s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 662 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 662 mSDsluCounter, 44 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1505 IncrementalHoareTripleChecker+Invalid, 1520 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 22 mSDtfsCounter, 1505 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 163 GetRequests, 106 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=686occurred in iteration=12, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 455 NumberOfCodeBlocks, 455 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 475 ConstructedInterpolants, 0 QuantifiedInterpolants, 1530 SizeOfPredicates, 17 NumberOfNonLiveVariables, 834 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 15 InterpolantComputations, 12 PerfectInterpolantSequences, 53/56 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