/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/parallel-parallel-sum-equiv.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 03:38:18,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 03:38:18,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 03:38:18,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 03:38:18,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 03:38:18,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 03:38:18,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 03:38:18,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 03:38:18,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 03:38:18,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 03:38:18,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 03:38:18,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 03:38:18,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 03:38:18,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 03:38:18,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 03:38:18,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 03:38:18,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 03:38:18,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 03:38:18,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 03:38:18,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 03:38:18,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 03:38:18,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 03:38:18,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 03:38:18,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 03:38:18,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 03:38:18,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 03:38:18,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 03:38:18,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 03:38:18,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 03:38:18,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 03:38:18,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 03:38:18,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 03:38:18,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 03:38:18,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 03:38:18,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 03:38:18,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 03:38:18,273 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 03:38:18,294 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 03:38:18,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 03:38:18,295 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 03:38:18,295 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 03:38:18,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 03:38:18,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 03:38:18,296 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 03:38:18,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 03:38:18,296 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 03:38:18,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 03:38:18,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 03:38:18,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 03:38:18,297 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 03:38:18,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 03:38:18,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 03:38:18,297 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 03:38:18,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 03:38:18,297 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 03:38:18,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 03:38:18,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 03:38:18,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 03:38:18,298 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 03:38:18,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 03:38:18,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 03:38:18,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 03:38:18,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 03:38:18,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 03:38:18,298 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 03:38:18,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 03:38:18,298 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 03:38:18,298 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 03:38:18,299 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 03:38:18,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 03:38:18,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 03:38:18,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 03:38:18,483 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 03:38:18,483 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 03:38:18,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2023-01-28 03:38:19,452 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 03:38:19,579 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 03:38:19,579 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2023-01-28 03:38:19,585 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa62735e7/4de16db4bfbb4cd1867b9ec881a65237/FLAGe911c4b79 [2023-01-28 03:38:19,593 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa62735e7/4de16db4bfbb4cd1867b9ec881a65237 [2023-01-28 03:38:19,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 03:38:19,596 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 03:38:19,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 03:38:19,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 03:38:19,601 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 03:38:19,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 03:38:19" (1/1) ... [2023-01-28 03:38:19,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f85ff07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:38:19, skipping insertion in model container [2023-01-28 03:38:19,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 03:38:19" (1/1) ... [2023-01-28 03:38:19,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 03:38:19,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 03:38:19,721 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c[3770,3783] [2023-01-28 03:38:19,727 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 03:38:19,733 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 03:38:19,754 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c[3770,3783] [2023-01-28 03:38:19,757 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 03:38:19,762 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 03:38:19,762 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 03:38:19,766 INFO L208 MainTranslator]: Completed translation [2023-01-28 03:38:19,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:38:19 WrapperNode [2023-01-28 03:38:19,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 03:38:19,768 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 03:38:19,768 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 03:38:19,768 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 03:38:19,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:38:19" (1/1) ... [2023-01-28 03:38:19,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:38:19" (1/1) ... [2023-01-28 03:38:19,792 INFO L138 Inliner]: procedures = 27, calls = 73, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 257 [2023-01-28 03:38:19,793 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 03:38:19,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 03:38:19,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 03:38:19,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 03:38:19,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:38:19" (1/1) ... [2023-01-28 03:38:19,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:38:19" (1/1) ... [2023-01-28 03:38:19,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:38:19" (1/1) ... [2023-01-28 03:38:19,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:38:19" (1/1) ... [2023-01-28 03:38:19,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:38:19" (1/1) ... [2023-01-28 03:38:19,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:38:19" (1/1) ... [2023-01-28 03:38:19,811 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:38:19" (1/1) ... [2023-01-28 03:38:19,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:38:19" (1/1) ... [2023-01-28 03:38:19,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 03:38:19,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 03:38:19,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 03:38:19,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 03:38:19,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:38:19" (1/1) ... [2023-01-28 03:38:19,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 03:38:19,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:38:19,836 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 03:38:19,840 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 03:38:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 03:38:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 03:38:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 03:38:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 03:38:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 03:38:19,879 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 03:38:19,880 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 03:38:19,881 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 03:38:19,881 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 03:38:19,881 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 03:38:19,881 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-28 03:38:19,881 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-28 03:38:19,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 03:38:19,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 03:38:19,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 03:38:19,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 03:38:19,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 03:38:19,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 03:38:19,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 03:38:19,883 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 03:38:20,004 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 03:38:20,005 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 03:38:20,293 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 03:38:20,393 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 03:38:20,393 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-28 03:38:20,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 03:38:20 BoogieIcfgContainer [2023-01-28 03:38:20,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 03:38:20,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 03:38:20,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 03:38:20,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 03:38:20,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 03:38:19" (1/3) ... [2023-01-28 03:38:20,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab2b3ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 03:38:20, skipping insertion in model container [2023-01-28 03:38:20,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:38:19" (2/3) ... [2023-01-28 03:38:20,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab2b3ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 03:38:20, skipping insertion in model container [2023-01-28 03:38:20,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 03:38:20" (3/3) ... [2023-01-28 03:38:20,402 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2023-01-28 03:38:20,414 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 03:38:20,414 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 03:38:20,414 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 03:38:20,495 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-01-28 03:38:20,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 205 transitions, 454 flow [2023-01-28 03:38:20,573 INFO L130 PetriNetUnfolder]: 14/190 cut-off events. [2023-01-28 03:38:20,573 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 03:38:20,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 190 events. 14/190 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 180 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 163. Up to 3 conditions per place. [2023-01-28 03:38:20,578 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 205 transitions, 454 flow [2023-01-28 03:38:20,581 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 182 transitions, 394 flow [2023-01-28 03:38:20,584 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 03:38:20,589 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 181 places, 182 transitions, 394 flow [2023-01-28 03:38:20,591 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 181 places, 182 transitions, 394 flow [2023-01-28 03:38:20,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 182 transitions, 394 flow [2023-01-28 03:38:20,642 INFO L130 PetriNetUnfolder]: 14/182 cut-off events. [2023-01-28 03:38:20,643 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 03:38:20,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 182 events. 14/182 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 180 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 163. Up to 3 conditions per place. [2023-01-28 03:38:20,647 INFO L119 LiptonReduction]: Number of co-enabled transitions 2880 [2023-01-28 03:38:25,366 INFO L134 LiptonReduction]: Checked pairs total: 7881 [2023-01-28 03:38:25,366 INFO L136 LiptonReduction]: Total number of compositions: 165 [2023-01-28 03:38:25,377 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 03:38:25,381 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;@44506413, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 03:38:25,381 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-01-28 03:38:25,385 INFO L130 PetriNetUnfolder]: 6/38 cut-off events. [2023-01-28 03:38:25,386 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 03:38:25,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:38:25,386 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 03:38:25,386 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 03:38:25,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:38:25,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1095116209, now seen corresponding path program 1 times [2023-01-28 03:38:25,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:38:25,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785157471] [2023-01-28 03:38:25,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:38:25,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:38:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:38:25,718 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 03:38:25,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:38:25,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785157471] [2023-01-28 03:38:25,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785157471] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:38:25,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:38:25,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 03:38:25,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953354499] [2023-01-28 03:38:25,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:38:25,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 03:38:25,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:38:25,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 03:38:25,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 03:38:25,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 372 [2023-01-28 03:38:25,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 173.5) internal successors, (694), 4 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:25,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:38:25,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 372 [2023-01-28 03:38:25,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:38:26,039 INFO L130 PetriNetUnfolder]: 1658/2379 cut-off events. [2023-01-28 03:38:26,039 INFO L131 PetriNetUnfolder]: For 374/387 co-relation queries the response was YES. [2023-01-28 03:38:26,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5103 conditions, 2379 events. 1658/2379 cut-off events. For 374/387 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9807 event pairs, 523 based on Foata normal form. 5/1793 useless extension candidates. Maximal degree in co-relation 5002. Up to 1081 conditions per place. [2023-01-28 03:38:26,052 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 67 selfloop transitions, 7 changer transitions 1/84 dead transitions. [2023-01-28 03:38:26,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 84 transitions, 396 flow [2023-01-28 03:38:26,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 03:38:26,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 03:38:26,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 748 transitions. [2023-01-28 03:38:26,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026881720430108 [2023-01-28 03:38:26,065 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 748 transitions. [2023-01-28 03:38:26,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 748 transitions. [2023-01-28 03:38:26,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:38:26,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 748 transitions. [2023-01-28 03:38:26,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:26,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:26,078 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:26,079 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 108 flow. Second operand 4 states and 748 transitions. [2023-01-28 03:38:26,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 84 transitions, 396 flow [2023-01-28 03:38:26,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 84 transitions, 344 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-28 03:38:26,086 INFO L231 Difference]: Finished difference. Result has 43 places, 45 transitions, 133 flow [2023-01-28 03:38:26,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=43, PETRI_TRANSITIONS=45} [2023-01-28 03:38:26,089 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2023-01-28 03:38:26,089 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 45 transitions, 133 flow [2023-01-28 03:38:26,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.5) internal successors, (694), 4 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:26,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:38:26,090 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 03:38:26,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 03:38:26,090 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 03:38:26,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:38:26,091 INFO L85 PathProgramCache]: Analyzing trace with hash 489950223, now seen corresponding path program 2 times [2023-01-28 03:38:26,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:38:26,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528365884] [2023-01-28 03:38:26,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:38:26,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:38:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:38:26,188 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 03:38:26,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:38:26,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528365884] [2023-01-28 03:38:26,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528365884] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:38:26,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:38:26,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 03:38:26,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556049993] [2023-01-28 03:38:26,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:38:26,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 03:38:26,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:38:26,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 03:38:26,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 03:38:26,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 372 [2023-01-28 03:38:26,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 173.5) internal successors, (694), 4 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:26,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:38:26,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 372 [2023-01-28 03:38:26,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:38:26,512 INFO L130 PetriNetUnfolder]: 2346/3398 cut-off events. [2023-01-28 03:38:26,512 INFO L131 PetriNetUnfolder]: For 760/760 co-relation queries the response was YES. [2023-01-28 03:38:26,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8017 conditions, 3398 events. 2346/3398 cut-off events. For 760/760 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 15085 event pairs, 975 based on Foata normal form. 1/2822 useless extension candidates. Maximal degree in co-relation 3909. Up to 1875 conditions per place. [2023-01-28 03:38:26,527 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 71 selfloop transitions, 8 changer transitions 1/89 dead transitions. [2023-01-28 03:38:26,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 89 transitions, 416 flow [2023-01-28 03:38:26,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 03:38:26,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 03:38:26,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 747 transitions. [2023-01-28 03:38:26,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020161290322581 [2023-01-28 03:38:26,530 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 747 transitions. [2023-01-28 03:38:26,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 747 transitions. [2023-01-28 03:38:26,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:38:26,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 747 transitions. [2023-01-28 03:38:26,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 186.75) internal successors, (747), 4 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:26,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:26,535 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:26,536 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 133 flow. Second operand 4 states and 747 transitions. [2023-01-28 03:38:26,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 89 transitions, 416 flow [2023-01-28 03:38:26,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 89 transitions, 416 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 03:38:26,541 INFO L231 Difference]: Finished difference. Result has 48 places, 50 transitions, 193 flow [2023-01-28 03:38:26,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=48, PETRI_TRANSITIONS=50} [2023-01-28 03:38:26,542 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2023-01-28 03:38:26,543 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 50 transitions, 193 flow [2023-01-28 03:38:26,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.5) internal successors, (694), 4 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:26,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:38:26,543 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 03:38:26,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 03:38:26,543 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 03:38:26,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:38:26,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1017003560, now seen corresponding path program 1 times [2023-01-28 03:38:26,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:38:26,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018878950] [2023-01-28 03:38:26,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:38:26,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:38:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:38:26,675 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 03:38:26,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:38:26,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018878950] [2023-01-28 03:38:26,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018878950] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:38:26,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:38:26,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 03:38:26,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944294780] [2023-01-28 03:38:26,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:38:26,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 03:38:26,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:38:26,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 03:38:26,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 03:38:26,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 372 [2023-01-28 03:38:26,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 50 transitions, 193 flow. Second operand has 5 states, 5 states have (on average 160.6) internal successors, (803), 5 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:26,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:38:26,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 372 [2023-01-28 03:38:26,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:38:27,092 INFO L130 PetriNetUnfolder]: 3817/5665 cut-off events. [2023-01-28 03:38:27,092 INFO L131 PetriNetUnfolder]: For 4364/4364 co-relation queries the response was YES. [2023-01-28 03:38:27,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14384 conditions, 5665 events. 3817/5665 cut-off events. For 4364/4364 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 28776 event pairs, 2160 based on Foata normal form. 186/4864 useless extension candidates. Maximal degree in co-relation 8356. Up to 3221 conditions per place. [2023-01-28 03:38:27,116 INFO L137 encePairwiseOnDemand]: 367/372 looper letters, 90 selfloop transitions, 5 changer transitions 0/104 dead transitions. [2023-01-28 03:38:27,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 104 transitions, 574 flow [2023-01-28 03:38:27,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:38:27,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:38:27,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 858 transitions. [2023-01-28 03:38:27,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4612903225806452 [2023-01-28 03:38:27,118 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 858 transitions. [2023-01-28 03:38:27,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 858 transitions. [2023-01-28 03:38:27,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:38:27,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 858 transitions. [2023-01-28 03:38:27,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 171.6) internal successors, (858), 5 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:27,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 372.0) internal successors, (2232), 6 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:27,123 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 372.0) internal successors, (2232), 6 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:27,124 INFO L175 Difference]: Start difference. First operand has 48 places, 50 transitions, 193 flow. Second operand 5 states and 858 transitions. [2023-01-28 03:38:27,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 104 transitions, 574 flow [2023-01-28 03:38:27,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 104 transitions, 572 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-01-28 03:38:27,132 INFO L231 Difference]: Finished difference. Result has 55 places, 54 transitions, 243 flow [2023-01-28 03:38:27,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=243, PETRI_PLACES=55, PETRI_TRANSITIONS=54} [2023-01-28 03:38:27,133 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2023-01-28 03:38:27,133 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 54 transitions, 243 flow [2023-01-28 03:38:27,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 160.6) internal successors, (803), 5 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:27,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:38:27,133 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 03:38:27,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 03:38:27,134 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 03:38:27,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:38:27,134 INFO L85 PathProgramCache]: Analyzing trace with hash 331371296, now seen corresponding path program 1 times [2023-01-28 03:38:27,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:38:27,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329025512] [2023-01-28 03:38:27,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:38:27,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:38:27,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:38:27,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:38:27,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:38:27,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329025512] [2023-01-28 03:38:27,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329025512] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:38:27,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742960293] [2023-01-28 03:38:27,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:38:27,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:38:27,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:38:27,256 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 03:38:27,256 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 03:38:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:38:27,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 03:38:27,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:38:27,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:38:27,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:38:27,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:38:27,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742960293] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:38:27,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:38:27,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-01-28 03:38:27,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712077603] [2023-01-28 03:38:27,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:38:27,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 03:38:27,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:38:27,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 03:38:27,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-01-28 03:38:27,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 372 [2023-01-28 03:38:27,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 54 transitions, 243 flow. Second operand has 12 states, 12 states have (on average 158.83333333333334) internal successors, (1906), 12 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:27,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:38:27,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 372 [2023-01-28 03:38:27,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:38:28,164 INFO L130 PetriNetUnfolder]: 5288/7796 cut-off events. [2023-01-28 03:38:28,164 INFO L131 PetriNetUnfolder]: For 8771/8771 co-relation queries the response was YES. [2023-01-28 03:38:28,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20366 conditions, 7796 events. 5288/7796 cut-off events. For 8771/8771 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 42303 event pairs, 2005 based on Foata normal form. 186/6605 useless extension candidates. Maximal degree in co-relation 14672. Up to 2043 conditions per place. [2023-01-28 03:38:28,199 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 165 selfloop transitions, 10 changer transitions 0/184 dead transitions. [2023-01-28 03:38:28,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 184 transitions, 1068 flow [2023-01-28 03:38:28,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 03:38:28,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 03:38:28,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1548 transitions. [2023-01-28 03:38:28,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46236559139784944 [2023-01-28 03:38:28,203 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1548 transitions. [2023-01-28 03:38:28,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1548 transitions. [2023-01-28 03:38:28,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:38:28,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1548 transitions. [2023-01-28 03:38:28,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 172.0) internal successors, (1548), 9 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:28,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 372.0) internal successors, (3720), 10 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:28,211 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 372.0) internal successors, (3720), 10 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:28,211 INFO L175 Difference]: Start difference. First operand has 55 places, 54 transitions, 243 flow. Second operand 9 states and 1548 transitions. [2023-01-28 03:38:28,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 184 transitions, 1068 flow [2023-01-28 03:38:28,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 184 transitions, 1064 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 03:38:28,219 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 316 flow [2023-01-28 03:38:28,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=316, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2023-01-28 03:38:28,221 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 20 predicate places. [2023-01-28 03:38:28,221 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 316 flow [2023-01-28 03:38:28,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 158.83333333333334) internal successors, (1906), 12 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:28,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:38:28,222 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 03:38:28,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 03:38:28,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:38:28,431 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 03:38:28,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:38:28,431 INFO L85 PathProgramCache]: Analyzing trace with hash -683343843, now seen corresponding path program 1 times [2023-01-28 03:38:28,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:38:28,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977140855] [2023-01-28 03:38:28,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:38:28,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:38:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:38:28,777 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 03:38:28,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:38:28,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977140855] [2023-01-28 03:38:28,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977140855] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:38:28,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:38:28,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 03:38:28,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893585710] [2023-01-28 03:38:28,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:38:28,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 03:38:28,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:38:28,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 03:38:28,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 03:38:28,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 372 [2023-01-28 03:38:28,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 316 flow. Second operand has 5 states, 5 states have (on average 160.8) internal successors, (804), 5 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:28,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:38:28,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 372 [2023-01-28 03:38:28,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:38:29,228 INFO L130 PetriNetUnfolder]: 4174/6390 cut-off events. [2023-01-28 03:38:29,228 INFO L131 PetriNetUnfolder]: For 9862/9862 co-relation queries the response was YES. [2023-01-28 03:38:29,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17827 conditions, 6390 events. 4174/6390 cut-off events. For 9862/9862 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 34198 event pairs, 2918 based on Foata normal form. 0/5375 useless extension candidates. Maximal degree in co-relation 12574. Up to 5314 conditions per place. [2023-01-28 03:38:29,254 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 45 selfloop transitions, 2 changer transitions 28/84 dead transitions. [2023-01-28 03:38:29,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 84 transitions, 543 flow [2023-01-28 03:38:29,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:38:29,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:38:29,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 840 transitions. [2023-01-28 03:38:29,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2023-01-28 03:38:29,257 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 840 transitions. [2023-01-28 03:38:29,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 840 transitions. [2023-01-28 03:38:29,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:38:29,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 840 transitions. [2023-01-28 03:38:29,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 168.0) internal successors, (840), 5 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:29,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 372.0) internal successors, (2232), 6 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:29,262 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 372.0) internal successors, (2232), 6 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:29,262 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 316 flow. Second operand 5 states and 840 transitions. [2023-01-28 03:38:29,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 84 transitions, 543 flow [2023-01-28 03:38:29,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 84 transitions, 527 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-01-28 03:38:29,271 INFO L231 Difference]: Finished difference. Result has 70 places, 56 transitions, 280 flow [2023-01-28 03:38:29,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=280, PETRI_PLACES=70, PETRI_TRANSITIONS=56} [2023-01-28 03:38:29,273 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 24 predicate places. [2023-01-28 03:38:29,273 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 56 transitions, 280 flow [2023-01-28 03:38:29,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 160.8) internal successors, (804), 5 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:29,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:38:29,273 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:38:29,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 03:38:29,274 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 03:38:29,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:38:29,274 INFO L85 PathProgramCache]: Analyzing trace with hash -818681128, now seen corresponding path program 2 times [2023-01-28 03:38:29,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:38:29,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867717255] [2023-01-28 03:38:29,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:38:29,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:38:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:38:29,446 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:38:29,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:38:29,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867717255] [2023-01-28 03:38:29,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867717255] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:38:29,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810036938] [2023-01-28 03:38:29,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:38:29,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:38:29,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:38:29,450 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 03:38:29,453 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 03:38:29,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:38:29,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:38:29,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 03:38:29,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:38:29,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:38:29,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:38:29,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:38:29,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810036938] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 03:38:29,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 03:38:29,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2023-01-28 03:38:29,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280324733] [2023-01-28 03:38:29,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:38:29,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 03:38:29,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:38:29,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 03:38:29,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-01-28 03:38:29,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 372 [2023-01-28 03:38:29,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 56 transitions, 280 flow. Second operand has 6 states, 6 states have (on average 160.16666666666666) internal successors, (961), 6 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:29,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:38:29,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 372 [2023-01-28 03:38:29,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:38:30,044 INFO L130 PetriNetUnfolder]: 3271/4874 cut-off events. [2023-01-28 03:38:30,044 INFO L131 PetriNetUnfolder]: For 7496/7496 co-relation queries the response was YES. [2023-01-28 03:38:30,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14504 conditions, 4874 events. 3271/4874 cut-off events. For 7496/7496 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 24028 event pairs, 1845 based on Foata normal form. 96/4792 useless extension candidates. Maximal degree in co-relation 14477. Up to 2273 conditions per place. [2023-01-28 03:38:30,069 INFO L137 encePairwiseOnDemand]: 365/372 looper letters, 84 selfloop transitions, 7 changer transitions 0/100 dead transitions. [2023-01-28 03:38:30,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 100 transitions, 660 flow [2023-01-28 03:38:30,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 03:38:30,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 03:38:30,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1008 transitions. [2023-01-28 03:38:30,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2023-01-28 03:38:30,079 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1008 transitions. [2023-01-28 03:38:30,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1008 transitions. [2023-01-28 03:38:30,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:38:30,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1008 transitions. [2023-01-28 03:38:30,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:30,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 372.0) internal successors, (2604), 7 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:30,083 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 372.0) internal successors, (2604), 7 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:30,083 INFO L175 Difference]: Start difference. First operand has 70 places, 56 transitions, 280 flow. Second operand 6 states and 1008 transitions. [2023-01-28 03:38:30,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 100 transitions, 660 flow [2023-01-28 03:38:30,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 100 transitions, 632 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-01-28 03:38:30,090 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 321 flow [2023-01-28 03:38:30,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=321, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2023-01-28 03:38:30,092 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2023-01-28 03:38:30,092 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 321 flow [2023-01-28 03:38:30,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.16666666666666) internal successors, (961), 6 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:30,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:38:30,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:38:30,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 03:38:30,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-01-28 03:38:30,299 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 03:38:30,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:38:30,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1536916939, now seen corresponding path program 1 times [2023-01-28 03:38:30,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:38:30,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276185115] [2023-01-28 03:38:30,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:38:30,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:38:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:38:30,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:38:30,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:38:30,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276185115] [2023-01-28 03:38:30,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276185115] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:38:30,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375789842] [2023-01-28 03:38:30,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:38:30,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:38:30,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:38:30,484 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 03:38:30,486 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 03:38:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:38:30,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-28 03:38:30,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:38:30,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:38:30,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:38:30,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:38:30,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375789842] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:38:30,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:38:30,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-01-28 03:38:30,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808138471] [2023-01-28 03:38:30,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:38:30,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 03:38:30,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:38:30,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 03:38:30,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-01-28 03:38:30,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 372 [2023-01-28 03:38:30,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 321 flow. Second operand has 11 states, 11 states have (on average 159.36363636363637) internal successors, (1753), 11 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:30,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:38:30,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 372 [2023-01-28 03:38:30,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:38:31,013 INFO L130 PetriNetUnfolder]: 2097/3250 cut-off events. [2023-01-28 03:38:31,014 INFO L131 PetriNetUnfolder]: For 5670/5670 co-relation queries the response was YES. [2023-01-28 03:38:31,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10260 conditions, 3250 events. 2097/3250 cut-off events. For 5670/5670 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 15542 event pairs, 845 based on Foata normal form. 192/3311 useless extension candidates. Maximal degree in co-relation 8477. Up to 1337 conditions per place. [2023-01-28 03:38:31,027 INFO L137 encePairwiseOnDemand]: 364/372 looper letters, 63 selfloop transitions, 5 changer transitions 28/105 dead transitions. [2023-01-28 03:38:31,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 105 transitions, 704 flow [2023-01-28 03:38:31,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 03:38:31,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 03:38:31,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1168 transitions. [2023-01-28 03:38:31,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4485407066052227 [2023-01-28 03:38:31,030 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1168 transitions. [2023-01-28 03:38:31,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1168 transitions. [2023-01-28 03:38:31,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:38:31,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1168 transitions. [2023-01-28 03:38:31,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 166.85714285714286) internal successors, (1168), 7 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:31,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 372.0) internal successors, (2976), 8 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:31,035 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 372.0) internal successors, (2976), 8 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:31,035 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 321 flow. Second operand 7 states and 1168 transitions. [2023-01-28 03:38:31,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 105 transitions, 704 flow [2023-01-28 03:38:31,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 105 transitions, 691 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-01-28 03:38:31,044 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 290 flow [2023-01-28 03:38:31,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=290, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2023-01-28 03:38:31,044 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2023-01-28 03:38:31,045 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 290 flow [2023-01-28 03:38:31,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 159.36363636363637) internal successors, (1753), 11 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:31,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:38:31,046 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:38:31,051 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 03:38:31,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:38:31,251 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 03:38:31,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:38:31,251 INFO L85 PathProgramCache]: Analyzing trace with hash -946785205, now seen corresponding path program 2 times [2023-01-28 03:38:31,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:38:31,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571261] [2023-01-28 03:38:31,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:38:31,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:38:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:38:31,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:38:31,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:38:31,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571261] [2023-01-28 03:38:31,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571261] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:38:31,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751382874] [2023-01-28 03:38:31,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:38:31,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:38:31,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:38:31,414 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:38:31,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 03:38:31,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:38:31,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:38:31,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 03:38:31,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:38:31,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:38:31,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:38:31,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:38:31,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751382874] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 03:38:31,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 03:38:31,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2023-01-28 03:38:31,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972553620] [2023-01-28 03:38:31,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:38:31,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 03:38:31,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:38:31,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 03:38:31,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-01-28 03:38:31,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 372 [2023-01-28 03:38:31,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 290 flow. Second operand has 6 states, 6 states have (on average 160.33333333333334) internal successors, (962), 6 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:31,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:38:31,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 372 [2023-01-28 03:38:31,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:38:31,810 INFO L130 PetriNetUnfolder]: 1374/2010 cut-off events. [2023-01-28 03:38:31,810 INFO L131 PetriNetUnfolder]: For 4003/4003 co-relation queries the response was YES. [2023-01-28 03:38:31,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7184 conditions, 2010 events. 1374/2010 cut-off events. For 4003/4003 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8101 event pairs, 639 based on Foata normal form. 134/2068 useless extension candidates. Maximal degree in co-relation 7143. Up to 1438 conditions per place. [2023-01-28 03:38:31,819 INFO L137 encePairwiseOnDemand]: 367/372 looper letters, 61 selfloop transitions, 8 changer transitions 0/78 dead transitions. [2023-01-28 03:38:31,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 78 transitions, 523 flow [2023-01-28 03:38:31,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 03:38:31,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 03:38:31,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 989 transitions. [2023-01-28 03:38:31,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44310035842293904 [2023-01-28 03:38:31,822 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 989 transitions. [2023-01-28 03:38:31,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 989 transitions. [2023-01-28 03:38:31,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:38:31,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 989 transitions. [2023-01-28 03:38:31,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 164.83333333333334) internal successors, (989), 6 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:31,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 372.0) internal successors, (2604), 7 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:31,826 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 372.0) internal successors, (2604), 7 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:31,826 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 290 flow. Second operand 6 states and 989 transitions. [2023-01-28 03:38:31,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 78 transitions, 523 flow [2023-01-28 03:38:31,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 78 transitions, 463 flow, removed 18 selfloop flow, removed 9 redundant places. [2023-01-28 03:38:31,834 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 265 flow [2023-01-28 03:38:31,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=265, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2023-01-28 03:38:31,835 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 19 predicate places. [2023-01-28 03:38:31,835 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 265 flow [2023-01-28 03:38:31,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.33333333333334) internal successors, (962), 6 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:31,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:38:31,835 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:38:31,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 03:38:32,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:38:32,041 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 03:38:32,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:38:32,041 INFO L85 PathProgramCache]: Analyzing trace with hash -247168574, now seen corresponding path program 1 times [2023-01-28 03:38:32,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:38:32,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625830655] [2023-01-28 03:38:32,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:38:32,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:38:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:38:32,432 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:38:32,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:38:32,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625830655] [2023-01-28 03:38:32,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625830655] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:38:32,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323105509] [2023-01-28 03:38:32,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:38:32,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:38:32,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:38:32,433 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:38:32,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 03:38:32,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:38:32,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 49 conjunts are in the unsatisfiable core [2023-01-28 03:38:32,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:38:32,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-01-28 03:38:32,679 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:38:32,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:38:32,763 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:38:32,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2023-01-28 03:38:32,800 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:38:32,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323105509] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:38:32,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:38:32,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2023-01-28 03:38:32,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445961910] [2023-01-28 03:38:32,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:38:32,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 03:38:32,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:38:32,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 03:38:32,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-01-28 03:38:32,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 372 [2023-01-28 03:38:32,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 265 flow. Second operand has 15 states, 15 states have (on average 148.6) internal successors, (2229), 15 states have internal predecessors, (2229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:32,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:38:32,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 372 [2023-01-28 03:38:32,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:38:33,760 INFO L130 PetriNetUnfolder]: 3962/5666 cut-off events. [2023-01-28 03:38:33,761 INFO L131 PetriNetUnfolder]: For 9127/9127 co-relation queries the response was YES. [2023-01-28 03:38:33,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19131 conditions, 5666 events. 3962/5666 cut-off events. For 9127/9127 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 26145 event pairs, 736 based on Foata normal form. 2/5523 useless extension candidates. Maximal degree in co-relation 19095. Up to 2708 conditions per place. [2023-01-28 03:38:33,789 INFO L137 encePairwiseOnDemand]: 361/372 looper letters, 201 selfloop transitions, 60 changer transitions 2/268 dead transitions. [2023-01-28 03:38:33,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 268 transitions, 1678 flow [2023-01-28 03:38:33,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 03:38:33,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 03:38:33,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2551 transitions. [2023-01-28 03:38:33,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4285954301075269 [2023-01-28 03:38:33,794 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2551 transitions. [2023-01-28 03:38:33,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2551 transitions. [2023-01-28 03:38:33,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:38:33,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2551 transitions. [2023-01-28 03:38:33,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 159.4375) internal successors, (2551), 16 states have internal predecessors, (2551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:33,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 372.0) internal successors, (6324), 17 states have internal predecessors, (6324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:33,804 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 372.0) internal successors, (6324), 17 states have internal predecessors, (6324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:33,804 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 265 flow. Second operand 16 states and 2551 transitions. [2023-01-28 03:38:33,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 268 transitions, 1678 flow [2023-01-28 03:38:33,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 268 transitions, 1612 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-01-28 03:38:33,814 INFO L231 Difference]: Finished difference. Result has 84 places, 114 transitions, 787 flow [2023-01-28 03:38:33,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=787, PETRI_PLACES=84, PETRI_TRANSITIONS=114} [2023-01-28 03:38:33,815 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 38 predicate places. [2023-01-28 03:38:33,815 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 114 transitions, 787 flow [2023-01-28 03:38:33,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 148.6) internal successors, (2229), 15 states have internal predecessors, (2229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:33,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:38:33,816 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:38:33,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-28 03:38:34,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:38:34,021 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 03:38:34,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:38:34,021 INFO L85 PathProgramCache]: Analyzing trace with hash -383429892, now seen corresponding path program 2 times [2023-01-28 03:38:34,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:38:34,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674896897] [2023-01-28 03:38:34,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:38:34,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:38:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:38:34,481 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:38:34,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:38:34,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674896897] [2023-01-28 03:38:34,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674896897] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:38:34,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068336956] [2023-01-28 03:38:34,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:38:34,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:38:34,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:38:34,483 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:38:34,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 03:38:34,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:38:34,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:38:34,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 78 conjunts are in the unsatisfiable core [2023-01-28 03:38:34,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:38:34,627 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-01-28 03:38:34,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2023-01-28 03:38:34,732 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 03:38:34,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-01-28 03:38:34,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-01-28 03:38:34,999 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:38:34,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 15 [2023-01-28 03:38:35,077 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:38:35,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:38:35,527 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:38:35,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 92 [2023-01-28 03:38:35,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 61 [2023-01-28 03:38:35,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 55 [2023-01-28 03:38:36,084 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:38:36,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068336956] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:38:36,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:38:36,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 12] total 30 [2023-01-28 03:38:36,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819365400] [2023-01-28 03:38:36,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:38:36,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-01-28 03:38:36,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:38:36,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-01-28 03:38:36,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=895, Unknown=4, NotChecked=0, Total=992 [2023-01-28 03:38:36,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 372 [2023-01-28 03:38:36,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 114 transitions, 787 flow. Second operand has 32 states, 32 states have (on average 119.1875) internal successors, (3814), 32 states have internal predecessors, (3814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:38:36,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:38:36,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 372 [2023-01-28 03:38:36,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:38:43,065 WARN L222 SmtUtils]: Spent 6.36s on a formula simplification. DAG size of input: 64 DAG size of output: 51 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 03:38:50,810 WARN L222 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 03:39:06,479 WARN L222 SmtUtils]: Spent 8.45s on a formula simplification. DAG size of input: 71 DAG size of output: 63 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 03:39:11,473 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 1 c_~s_2~0))) (and (<= 1 c_~n_1~0) (<= (+ c_~X_0~0.base 1) |c_#StackHeapBarrier|) (forall ((v_ArrVal_430 (Array Int Int)) (v_~i_7~0_89 Int)) (or (< v_~i_7~0_89 c_~n_1~0) (<= c_~s_2~0 (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_430) c_~X_0~0.base) (+ c_~X_0~0.offset (* v_~i_7~0_89 4)))) (< 1 v_~i_7~0_89))) (or (and (forall ((v_ArrVal_430 (Array Int Int)) (v_~i_7~0_89 Int)) (or (< v_~i_7~0_89 c_~n_1~0) (< 1 v_~i_7~0_89) (< (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_430) c_~X_0~0.base) (+ c_~X_0~0.offset (* v_~i_7~0_89 4))) (+ c_~t_4~0 1 c_~s_2~0)))) (forall ((v_ArrVal_430 (Array Int Int)) (v_~i_7~0_89 Int)) (or (< v_~i_7~0_89 c_~n_1~0) (<= (+ c_~t_4~0 c_~s_2~0) (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_430) c_~X_0~0.base) (+ c_~X_0~0.offset (* v_~i_7~0_89 4)))) (< 1 v_~i_7~0_89)))) (< c_~i_3~0 c_~n_1~0)) (= (select |c_#valid| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) 1) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 1) |c_#StackHeapBarrier|) (= (select |c_#valid| c_~X_0~0.base) 1) (= 0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (forall ((v_ArrVal_430 (Array Int Int)) (v_~i_7~0_89 Int)) (or (< v_~i_7~0_89 c_~n_1~0) (< (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_430) c_~X_0~0.base) (+ c_~X_0~0.offset (* v_~i_7~0_89 4))) .cse0) (< 1 v_~i_7~0_89))) (= c_~X_0~0.offset 0) (or (< c_~i_7~0 c_~n_1~0) (and (<= c_~s_2~0 c_~s_6~0) (< c_~s_6~0 .cse0))))) is different from false [2023-01-28 03:39:28,701 WARN L222 SmtUtils]: Spent 6.17s on a formula simplification. DAG size of input: 56 DAG size of output: 53 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 03:39:39,034 INFO L130 PetriNetUnfolder]: 10273/14732 cut-off events. [2023-01-28 03:39:39,034 INFO L131 PetriNetUnfolder]: For 42568/42600 co-relation queries the response was YES. [2023-01-28 03:39:39,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57949 conditions, 14732 events. 10273/14732 cut-off events. For 42568/42600 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 80690 event pairs, 791 based on Foata normal form. 35/14269 useless extension candidates. Maximal degree in co-relation 57906. Up to 3064 conditions per place. [2023-01-28 03:39:39,114 INFO L137 encePairwiseOnDemand]: 346/372 looper letters, 502 selfloop transitions, 396 changer transitions 22/925 dead transitions. [2023-01-28 03:39:39,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 925 transitions, 7009 flow [2023-01-28 03:39:39,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-01-28 03:39:39,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2023-01-28 03:39:39,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 8670 transitions. [2023-01-28 03:39:39,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34274193548387094 [2023-01-28 03:39:39,210 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 8670 transitions. [2023-01-28 03:39:39,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 8670 transitions. [2023-01-28 03:39:39,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:39:39,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 8670 transitions. [2023-01-28 03:39:39,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 127.5) internal successors, (8670), 68 states have internal predecessors, (8670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:39:39,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 372.0) internal successors, (25668), 69 states have internal predecessors, (25668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:39:39,259 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 372.0) internal successors, (25668), 69 states have internal predecessors, (25668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:39:39,259 INFO L175 Difference]: Start difference. First operand has 84 places, 114 transitions, 787 flow. Second operand 68 states and 8670 transitions. [2023-01-28 03:39:39,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 925 transitions, 7009 flow [2023-01-28 03:39:39,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 925 transitions, 6856 flow, removed 73 selfloop flow, removed 2 redundant places. [2023-01-28 03:39:39,362 INFO L231 Difference]: Finished difference. Result has 174 places, 500 transitions, 5074 flow [2023-01-28 03:39:39,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=5074, PETRI_PLACES=174, PETRI_TRANSITIONS=500} [2023-01-28 03:39:39,363 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 128 predicate places. [2023-01-28 03:39:39,363 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 500 transitions, 5074 flow [2023-01-28 03:39:39,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 119.1875) internal successors, (3814), 32 states have internal predecessors, (3814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:39:39,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:39:39,364 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:39:39,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 03:39:39,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:39:39,564 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 03:39:39,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:39:39,565 INFO L85 PathProgramCache]: Analyzing trace with hash 2125309184, now seen corresponding path program 3 times [2023-01-28 03:39:39,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:39:39,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906479619] [2023-01-28 03:39:39,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:39:39,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:39:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:39:40,168 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:39:40,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:39:40,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906479619] [2023-01-28 03:39:40,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906479619] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:39:40,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580005361] [2023-01-28 03:39:40,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 03:39:40,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:39:40,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:39:40,169 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:39:40,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 03:39:40,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 03:39:40,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:39:40,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 72 conjunts are in the unsatisfiable core [2023-01-28 03:39:40,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:39:40,316 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-01-28 03:39:40,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2023-01-28 03:39:40,432 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-01-28 03:39:40,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-01-28 03:39:40,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 03:39:40,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 03:39:40,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-01-28 03:39:40,690 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:39:40,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:39:40,792 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0)))) (and (forall ((v_ArrVal_493 (Array Int Int))) (<= c_~s_6~0 (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_493) c_~X_0~0.base) .cse0) c_~s_2~0))) (forall ((v_ArrVal_493 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_493) c_~X_0~0.base) .cse0) c_~s_2~0) (+ c_~s_6~0 1))))) is different from false [2023-01-28 03:39:41,032 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:39:41,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 226 treesize of output 150 [2023-01-28 03:39:41,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2023-01-28 03:39:41,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2023-01-28 03:39:41,087 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:39:41,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 218 treesize of output 142 [2023-01-28 03:39:41,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2023-01-28 03:39:41,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2023-01-28 03:39:41,268 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:39:41,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580005361] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:39:41,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:39:41,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 24 [2023-01-28 03:39:41,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440234904] [2023-01-28 03:39:41,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:39:41,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-01-28 03:39:41,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:39:41,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-01-28 03:39:41,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=501, Unknown=10, NotChecked=46, Total=650 [2023-01-28 03:39:41,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 372 [2023-01-28 03:39:41,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 500 transitions, 5074 flow. Second operand has 26 states, 26 states have (on average 125.57692307692308) internal successors, (3265), 26 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:39:41,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:39:41,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 372 [2023-01-28 03:39:41,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:39:44,807 INFO L130 PetriNetUnfolder]: 14250/20351 cut-off events. [2023-01-28 03:39:44,807 INFO L131 PetriNetUnfolder]: For 369706/369756 co-relation queries the response was YES. [2023-01-28 03:39:44,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137506 conditions, 20351 events. 14250/20351 cut-off events. For 369706/369756 co-relation queries the response was YES. Maximal size of possible extension queue 829. Compared 116290 event pairs, 2806 based on Foata normal form. 25/19722 useless extension candidates. Maximal degree in co-relation 137434. Up to 8998 conditions per place. [2023-01-28 03:39:44,966 INFO L137 encePairwiseOnDemand]: 358/372 looper letters, 636 selfloop transitions, 208 changer transitions 2/851 dead transitions. [2023-01-28 03:39:44,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 851 transitions, 10298 flow [2023-01-28 03:39:44,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 03:39:44,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 03:39:44,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1898 transitions. [2023-01-28 03:39:44,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36443932411674346 [2023-01-28 03:39:44,970 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1898 transitions. [2023-01-28 03:39:44,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1898 transitions. [2023-01-28 03:39:44,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:39:44,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1898 transitions. [2023-01-28 03:39:44,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 135.57142857142858) internal successors, (1898), 14 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:39:44,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 372.0) internal successors, (5580), 15 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:39:44,976 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 372.0) internal successors, (5580), 15 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:39:44,976 INFO L175 Difference]: Start difference. First operand has 174 places, 500 transitions, 5074 flow. Second operand 14 states and 1898 transitions. [2023-01-28 03:39:44,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 851 transitions, 10298 flow [2023-01-28 03:39:47,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 851 transitions, 8704 flow, removed 780 selfloop flow, removed 6 redundant places. [2023-01-28 03:39:47,302 INFO L231 Difference]: Finished difference. Result has 187 places, 571 transitions, 5607 flow [2023-01-28 03:39:47,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=4086, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5607, PETRI_PLACES=187, PETRI_TRANSITIONS=571} [2023-01-28 03:39:47,303 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 141 predicate places. [2023-01-28 03:39:47,303 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 571 transitions, 5607 flow [2023-01-28 03:39:47,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 125.57692307692308) internal successors, (3265), 26 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:39:47,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:39:47,304 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:39:47,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 03:39:47,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:39:47,508 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 03:39:47,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:39:47,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1988782731, now seen corresponding path program 1 times [2023-01-28 03:39:47,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:39:47,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986388315] [2023-01-28 03:39:47,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:39:47,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:39:47,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:39:48,034 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:39:48,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:39:48,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986388315] [2023-01-28 03:39:48,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986388315] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:39:48,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106801745] [2023-01-28 03:39:48,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:39:48,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:39:48,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:39:48,036 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:39:48,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 03:39:48,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:39:48,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 54 conjunts are in the unsatisfiable core [2023-01-28 03:39:48,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:39:48,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:39:48,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-01-28 03:39:48,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-01-28 03:39:48,335 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:39:48,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:39:48,407 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0)))) (and (forall ((v_ArrVal_550 (Array Int Int))) (<= c_~s_6~0 (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_550) c_~X_0~0.base) .cse0) c_~s_2~0))) (forall ((v_ArrVal_550 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_550) c_~X_0~0.base) .cse0) c_~s_2~0) (+ c_~s_6~0 1))))) is different from false [2023-01-28 03:39:48,424 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:39:48,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 41 [2023-01-28 03:39:48,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 12 [2023-01-28 03:39:48,435 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 03:39:48,440 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 03:39:48,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2023-01-28 03:39:48,533 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2023-01-28 03:39:48,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106801745] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:39:48,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:39:48,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-01-28 03:39:48,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217659415] [2023-01-28 03:39:48,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:39:48,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 03:39:48,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:39:48,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 03:39:48,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=352, Unknown=1, NotChecked=38, Total=462 [2023-01-28 03:39:48,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 372 [2023-01-28 03:39:48,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 571 transitions, 5607 flow. Second operand has 22 states, 22 states have (on average 139.86363636363637) internal successors, (3077), 22 states have internal predecessors, (3077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:39:48,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:39:48,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 372 [2023-01-28 03:39:48,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:39:52,085 INFO L130 PetriNetUnfolder]: 16178/23069 cut-off events. [2023-01-28 03:39:52,086 INFO L131 PetriNetUnfolder]: For 459447/459491 co-relation queries the response was YES. [2023-01-28 03:39:52,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157390 conditions, 23069 events. 16178/23069 cut-off events. For 459447/459491 co-relation queries the response was YES. Maximal size of possible extension queue 949. Compared 134169 event pairs, 5626 based on Foata normal form. 20/22367 useless extension candidates. Maximal degree in co-relation 157310. Up to 20257 conditions per place. [2023-01-28 03:39:52,295 INFO L137 encePairwiseOnDemand]: 362/372 looper letters, 620 selfloop transitions, 64 changer transitions 1/690 dead transitions. [2023-01-28 03:39:52,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 690 transitions, 8329 flow [2023-01-28 03:39:52,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 03:39:52,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 03:39:52,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1198 transitions. [2023-01-28 03:39:52,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025537634408602 [2023-01-28 03:39:52,297 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1198 transitions. [2023-01-28 03:39:52,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1198 transitions. [2023-01-28 03:39:52,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:39:52,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1198 transitions. [2023-01-28 03:39:52,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 149.75) internal successors, (1198), 8 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:39:52,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 372.0) internal successors, (3348), 9 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:39:52,301 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 372.0) internal successors, (3348), 9 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:39:52,301 INFO L175 Difference]: Start difference. First operand has 187 places, 571 transitions, 5607 flow. Second operand 8 states and 1198 transitions. [2023-01-28 03:39:52,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 690 transitions, 8329 flow [2023-01-28 03:39:55,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 690 transitions, 8004 flow, removed 155 selfloop flow, removed 3 redundant places. [2023-01-28 03:39:55,227 INFO L231 Difference]: Finished difference. Result has 194 places, 622 transitions, 6400 flow [2023-01-28 03:39:55,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=5353, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6400, PETRI_PLACES=194, PETRI_TRANSITIONS=622} [2023-01-28 03:39:55,227 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 148 predicate places. [2023-01-28 03:39:55,228 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 622 transitions, 6400 flow [2023-01-28 03:39:55,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 139.86363636363637) internal successors, (3077), 22 states have internal predecessors, (3077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:39:55,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:39:55,228 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:39:55,232 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-01-28 03:39:55,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-01-28 03:39:55,429 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 03:39:55,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:39:55,429 INFO L85 PathProgramCache]: Analyzing trace with hash -389085305, now seen corresponding path program 2 times [2023-01-28 03:39:55,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:39:55,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352626663] [2023-01-28 03:39:55,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:39:55,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:39:55,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:39:55,774 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:39:55,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:39:55,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352626663] [2023-01-28 03:39:55,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352626663] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:39:55,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591226911] [2023-01-28 03:39:55,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:39:55,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:39:55,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:39:55,776 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:39:55,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 03:39:55,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:39:55,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:39:55,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 61 conjunts are in the unsatisfiable core [2023-01-28 03:39:55,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:39:56,110 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:39:56,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 15 [2023-01-28 03:39:56,199 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:39:56,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:39:56,454 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:39:56,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 16 [2023-01-28 03:39:56,471 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-01-28 03:39:56,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2023-01-28 03:39:56,643 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:39:56,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591226911] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:39:56,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:39:56,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 9] total 24 [2023-01-28 03:39:56,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424843426] [2023-01-28 03:39:56,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:39:56,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-01-28 03:39:56,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:39:56,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-01-28 03:39:56,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2023-01-28 03:39:56,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 372 [2023-01-28 03:39:56,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 622 transitions, 6400 flow. Second operand has 26 states, 26 states have (on average 134.84615384615384) internal successors, (3506), 26 states have internal predecessors, (3506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:39:56,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:39:56,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 372 [2023-01-28 03:39:56,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:40:02,383 INFO L130 PetriNetUnfolder]: 19181/27370 cut-off events. [2023-01-28 03:40:02,383 INFO L131 PetriNetUnfolder]: For 438221/438293 co-relation queries the response was YES. [2023-01-28 03:40:02,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182389 conditions, 27370 events. 19181/27370 cut-off events. For 438221/438293 co-relation queries the response was YES. Maximal size of possible extension queue 1185. Compared 163204 event pairs, 5622 based on Foata normal form. 78/26620 useless extension candidates. Maximal degree in co-relation 182306. Up to 21040 conditions per place. [2023-01-28 03:40:02,597 INFO L137 encePairwiseOnDemand]: 358/372 looper letters, 662 selfloop transitions, 392 changer transitions 1/1060 dead transitions. [2023-01-28 03:40:02,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 1060 transitions, 12927 flow [2023-01-28 03:40:02,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-01-28 03:40:02,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-01-28 03:40:02,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4250 transitions. [2023-01-28 03:40:02,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38082437275985664 [2023-01-28 03:40:02,600 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4250 transitions. [2023-01-28 03:40:02,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4250 transitions. [2023-01-28 03:40:02,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:40:02,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4250 transitions. [2023-01-28 03:40:02,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 141.66666666666666) internal successors, (4250), 30 states have internal predecessors, (4250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:40:02,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 372.0) internal successors, (11532), 31 states have internal predecessors, (11532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:40:02,611 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 372.0) internal successors, (11532), 31 states have internal predecessors, (11532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:40:02,611 INFO L175 Difference]: Start difference. First operand has 194 places, 622 transitions, 6400 flow. Second operand 30 states and 4250 transitions. [2023-01-28 03:40:02,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 1060 transitions, 12927 flow [2023-01-28 03:40:04,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 1060 transitions, 12684 flow, removed 119 selfloop flow, removed 2 redundant places. [2023-01-28 03:40:04,962 INFO L231 Difference]: Finished difference. Result has 230 places, 832 transitions, 10059 flow [2023-01-28 03:40:04,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=6203, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=10059, PETRI_PLACES=230, PETRI_TRANSITIONS=832} [2023-01-28 03:40:04,963 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 184 predicate places. [2023-01-28 03:40:04,963 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 832 transitions, 10059 flow [2023-01-28 03:40:04,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 134.84615384615384) internal successors, (3506), 26 states have internal predecessors, (3506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:40:04,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:40:04,964 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:40:04,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-01-28 03:40:05,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-01-28 03:40:05,165 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 03:40:05,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:40:05,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1064308469, now seen corresponding path program 1 times [2023-01-28 03:40:05,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:40:05,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645245217] [2023-01-28 03:40:05,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:40:05,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:40:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:40:05,631 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:40:05,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:40:05,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645245217] [2023-01-28 03:40:05,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645245217] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:40:05,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793850092] [2023-01-28 03:40:05,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:40:05,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:40:05,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:40:05,633 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:40:05,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-28 03:40:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:40:05,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 49 conjunts are in the unsatisfiable core [2023-01-28 03:40:05,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:40:05,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-01-28 03:40:05,838 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:40:05,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:40:05,920 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:40:05,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2023-01-28 03:40:05,944 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:40:05,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793850092] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:40:05,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:40:05,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2023-01-28 03:40:05,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362777927] [2023-01-28 03:40:05,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:40:05,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 03:40:05,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:40:05,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 03:40:05,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-01-28 03:40:05,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 372 [2023-01-28 03:40:05,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 832 transitions, 10059 flow. Second operand has 15 states, 15 states have (on average 148.86666666666667) internal successors, (2233), 15 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:40:05,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:40:05,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 372 [2023-01-28 03:40:05,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:40:11,498 INFO L130 PetriNetUnfolder]: 20983/29874 cut-off events. [2023-01-28 03:40:11,498 INFO L131 PetriNetUnfolder]: For 574073/574125 co-relation queries the response was YES. [2023-01-28 03:40:11,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216470 conditions, 29874 events. 20983/29874 cut-off events. For 574073/574125 co-relation queries the response was YES. Maximal size of possible extension queue 1299. Compared 180339 event pairs, 7145 based on Foata normal form. 27/28976 useless extension candidates. Maximal degree in co-relation 216375. Up to 26250 conditions per place. [2023-01-28 03:40:11,778 INFO L137 encePairwiseOnDemand]: 362/372 looper letters, 932 selfloop transitions, 78 changer transitions 1/1016 dead transitions. [2023-01-28 03:40:11,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 1016 transitions, 14020 flow [2023-01-28 03:40:11,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 03:40:11,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 03:40:11,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2522 transitions. [2023-01-28 03:40:11,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4237231182795699 [2023-01-28 03:40:11,780 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2522 transitions. [2023-01-28 03:40:11,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2522 transitions. [2023-01-28 03:40:11,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:40:11,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2522 transitions. [2023-01-28 03:40:11,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 157.625) internal successors, (2522), 16 states have internal predecessors, (2522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:40:11,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 372.0) internal successors, (6324), 17 states have internal predecessors, (6324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:40:11,786 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 372.0) internal successors, (6324), 17 states have internal predecessors, (6324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:40:11,786 INFO L175 Difference]: Start difference. First operand has 230 places, 832 transitions, 10059 flow. Second operand 16 states and 2522 transitions. [2023-01-28 03:40:11,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 1016 transitions, 14020 flow [2023-01-28 03:40:16,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 1016 transitions, 13384 flow, removed 288 selfloop flow, removed 8 redundant places. [2023-01-28 03:40:16,225 INFO L231 Difference]: Finished difference. Result has 246 places, 878 transitions, 10364 flow [2023-01-28 03:40:16,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=9423, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=832, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=771, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10364, PETRI_PLACES=246, PETRI_TRANSITIONS=878} [2023-01-28 03:40:16,226 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 200 predicate places. [2023-01-28 03:40:16,226 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 878 transitions, 10364 flow [2023-01-28 03:40:16,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 148.86666666666667) internal successors, (2233), 15 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:40:16,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:40:16,226 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:40:16,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-28 03:40:16,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-01-28 03:40:16,431 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 03:40:16,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:40:16,431 INFO L85 PathProgramCache]: Analyzing trace with hash -2124365357, now seen corresponding path program 3 times [2023-01-28 03:40:16,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:40:16,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488484530] [2023-01-28 03:40:16,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:40:16,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:40:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:40:16,850 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:40:16,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:40:16,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488484530] [2023-01-28 03:40:16,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488484530] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:40:16,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001693004] [2023-01-28 03:40:16,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 03:40:16,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:40:16,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:40:16,853 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:40:16,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-28 03:40:16,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 03:40:16,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:40:16,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 66 conjunts are in the unsatisfiable core [2023-01-28 03:40:16,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:40:17,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:40:17,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 03:40:17,220 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:40:17,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 15 [2023-01-28 03:40:17,299 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:40:17,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:40:17,613 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:40:17,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 36 [2023-01-28 03:40:17,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2023-01-28 03:40:17,635 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 03:40:17,640 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-01-28 03:40:17,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2023-01-28 03:40:17,844 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:40:17,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001693004] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:40:17,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:40:17,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 27 [2023-01-28 03:40:17,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188254221] [2023-01-28 03:40:17,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:40:17,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-28 03:40:17,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:40:17,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-28 03:40:17,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=721, Unknown=3, NotChecked=0, Total=812 [2023-01-28 03:40:17,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 372 [2023-01-28 03:40:17,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 878 transitions, 10364 flow. Second operand has 29 states, 29 states have (on average 127.44827586206897) internal successors, (3696), 29 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:40:17,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:40:17,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 372 [2023-01-28 03:40:17,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:40:24,424 INFO L130 PetriNetUnfolder]: 21651/30833 cut-off events. [2023-01-28 03:40:24,424 INFO L131 PetriNetUnfolder]: For 615843/615927 co-relation queries the response was YES. [2023-01-28 03:40:24,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225936 conditions, 30833 events. 21651/30833 cut-off events. For 615843/615927 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 186923 event pairs, 5916 based on Foata normal form. 75/29958 useless extension candidates. Maximal degree in co-relation 225833. Up to 24148 conditions per place. [2023-01-28 03:40:24,750 INFO L137 encePairwiseOnDemand]: 360/372 looper letters, 695 selfloop transitions, 368 changer transitions 1/1069 dead transitions. [2023-01-28 03:40:24,750 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 1069 transitions, 14654 flow [2023-01-28 03:40:24,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-28 03:40:24,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-28 03:40:24,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2953 transitions. [2023-01-28 03:40:24,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3608260019550342 [2023-01-28 03:40:24,754 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2953 transitions. [2023-01-28 03:40:24,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2953 transitions. [2023-01-28 03:40:24,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:40:24,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2953 transitions. [2023-01-28 03:40:24,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 134.22727272727272) internal successors, (2953), 22 states have internal predecessors, (2953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:40:24,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 372.0) internal successors, (8556), 23 states have internal predecessors, (8556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:40:24,760 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 372.0) internal successors, (8556), 23 states have internal predecessors, (8556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:40:24,760 INFO L175 Difference]: Start difference. First operand has 246 places, 878 transitions, 10364 flow. Second operand 22 states and 2953 transitions. [2023-01-28 03:40:24,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 1069 transitions, 14654 flow [2023-01-28 03:40:29,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 1069 transitions, 14368 flow, removed 79 selfloop flow, removed 4 redundant places. [2023-01-28 03:40:29,463 INFO L231 Difference]: Finished difference. Result has 269 places, 926 transitions, 12030 flow [2023-01-28 03:40:29,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=10101, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=878, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=322, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=12030, PETRI_PLACES=269, PETRI_TRANSITIONS=926} [2023-01-28 03:40:29,464 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 223 predicate places. [2023-01-28 03:40:29,464 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 926 transitions, 12030 flow [2023-01-28 03:40:29,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 127.44827586206897) internal successors, (3696), 29 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:40:29,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:40:29,464 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:40:29,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-28 03:40:29,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-28 03:40:29,665 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 03:40:29,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:40:29,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1139558759, now seen corresponding path program 2 times [2023-01-28 03:40:29,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:40:29,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529721663] [2023-01-28 03:40:29,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:40:29,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:40:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:40:29,976 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:40:29,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:40:29,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529721663] [2023-01-28 03:40:29,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529721663] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:40:29,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807308169] [2023-01-28 03:40:29,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:40:29,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:40:29,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:40:29,990 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:40:29,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-28 03:40:30,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:40:30,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:40:30,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 60 conjunts are in the unsatisfiable core [2023-01-28 03:40:30,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:40:30,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-01-28 03:40:30,257 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:40:30,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:40:30,347 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:40:30,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2023-01-28 03:40:30,374 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:40:30,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807308169] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:40:30,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:40:30,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 6] total 17 [2023-01-28 03:40:30,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914980589] [2023-01-28 03:40:30,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:40:30,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 03:40:30,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:40:30,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 03:40:30,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-01-28 03:40:30,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 372 [2023-01-28 03:40:30,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 926 transitions, 12030 flow. Second operand has 18 states, 18 states have (on average 139.61111111111111) internal successors, (2513), 18 states have internal predecessors, (2513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:40:30,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:40:30,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 372 [2023-01-28 03:40:30,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:40:42,660 INFO L130 PetriNetUnfolder]: 44061/62717 cut-off events. [2023-01-28 03:40:42,660 INFO L131 PetriNetUnfolder]: For 1517356/1517423 co-relation queries the response was YES. [2023-01-28 03:40:43,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484569 conditions, 62717 events. 44061/62717 cut-off events. For 1517356/1517423 co-relation queries the response was YES. Maximal size of possible extension queue 2724. Compared 417837 event pairs, 15790 based on Foata normal form. 36/60814 useless extension candidates. Maximal degree in co-relation 483748. Up to 29160 conditions per place. [2023-01-28 03:40:43,804 INFO L137 encePairwiseOnDemand]: 361/372 looper letters, 1899 selfloop transitions, 122 changer transitions 2/2028 dead transitions. [2023-01-28 03:40:43,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 2028 transitions, 30177 flow [2023-01-28 03:40:43,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-01-28 03:40:43,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-01-28 03:40:43,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4105 transitions. [2023-01-28 03:40:43,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39410522273425497 [2023-01-28 03:40:43,808 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4105 transitions. [2023-01-28 03:40:43,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4105 transitions. [2023-01-28 03:40:43,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:40:43,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4105 transitions. [2023-01-28 03:40:43,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 146.60714285714286) internal successors, (4105), 28 states have internal predecessors, (4105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:40:43,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 372.0) internal successors, (10788), 29 states have internal predecessors, (10788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:40:43,816 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 372.0) internal successors, (10788), 29 states have internal predecessors, (10788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:40:43,816 INFO L175 Difference]: Start difference. First operand has 269 places, 926 transitions, 12030 flow. Second operand 28 states and 4105 transitions. [2023-01-28 03:40:43,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 2028 transitions, 30177 flow [2023-01-28 03:41:05,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 2028 transitions, 29564 flow, removed 278 selfloop flow, removed 6 redundant places. [2023-01-28 03:41:05,946 INFO L231 Difference]: Finished difference. Result has 297 places, 996 transitions, 13475 flow [2023-01-28 03:41:05,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=11721, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=926, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=869, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=13475, PETRI_PLACES=297, PETRI_TRANSITIONS=996} [2023-01-28 03:41:05,947 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 251 predicate places. [2023-01-28 03:41:05,947 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 996 transitions, 13475 flow [2023-01-28 03:41:05,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 139.61111111111111) internal successors, (2513), 18 states have internal predecessors, (2513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:41:05,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:41:05,948 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:41:05,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-28 03:41:06,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-01-28 03:41:06,152 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 03:41:06,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:41:06,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1342584537, now seen corresponding path program 4 times [2023-01-28 03:41:06,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:41:06,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268300224] [2023-01-28 03:41:06,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:41:06,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:41:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:41:06,579 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:41:06,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:41:06,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268300224] [2023-01-28 03:41:06,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268300224] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:41:06,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752401845] [2023-01-28 03:41:06,579 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:41:06,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:41:06,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:41:06,580 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:41:06,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-28 03:41:06,751 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:41:06,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:41:06,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 54 conjunts are in the unsatisfiable core [2023-01-28 03:41:06,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:41:06,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:41:06,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-01-28 03:41:06,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-01-28 03:41:06,936 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:41:06,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:41:07,083 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:41:07,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 34 [2023-01-28 03:41:07,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-01-28 03:41:07,093 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 03:41:07,167 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:41:07,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752401845] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:41:07,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:41:07,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 20 [2023-01-28 03:41:07,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791937995] [2023-01-28 03:41:07,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:41:07,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 03:41:07,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:41:07,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 03:41:07,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=390, Unknown=4, NotChecked=0, Total=462 [2023-01-28 03:41:07,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 372 [2023-01-28 03:41:07,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 996 transitions, 13475 flow. Second operand has 22 states, 22 states have (on average 140.0) internal successors, (3080), 22 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:41:07,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:41:07,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 372 [2023-01-28 03:41:07,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:41:22,271 INFO L130 PetriNetUnfolder]: 46817/66517 cut-off events. [2023-01-28 03:41:22,271 INFO L131 PetriNetUnfolder]: For 1904315/1904422 co-relation queries the response was YES. [2023-01-28 03:41:23,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 529193 conditions, 66517 events. 46817/66517 cut-off events. For 1904315/1904422 co-relation queries the response was YES. Maximal size of possible extension queue 2974. Compared 446696 event pairs, 14602 based on Foata normal form. 56/64501 useless extension candidates. Maximal degree in co-relation 528337. Up to 56329 conditions per place. [2023-01-28 03:41:23,686 INFO L137 encePairwiseOnDemand]: 360/372 looper letters, 910 selfloop transitions, 230 changer transitions 1/1146 dead transitions. [2023-01-28 03:41:23,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 1146 transitions, 17414 flow [2023-01-28 03:41:23,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 03:41:23,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 03:41:23,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2083 transitions. [2023-01-28 03:41:23,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3999615975422427 [2023-01-28 03:41:23,688 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2083 transitions. [2023-01-28 03:41:23,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2083 transitions. [2023-01-28 03:41:23,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:41:23,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2083 transitions. [2023-01-28 03:41:23,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 148.78571428571428) internal successors, (2083), 14 states have internal predecessors, (2083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:41:23,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 372.0) internal successors, (5580), 15 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:41:23,692 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 372.0) internal successors, (5580), 15 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:41:23,692 INFO L175 Difference]: Start difference. First operand has 297 places, 996 transitions, 13475 flow. Second operand 14 states and 2083 transitions. [2023-01-28 03:41:23,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 1146 transitions, 17414 flow [2023-01-28 03:41:52,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 1146 transitions, 17079 flow, removed 116 selfloop flow, removed 8 redundant places. [2023-01-28 03:41:52,728 INFO L231 Difference]: Finished difference. Result has 305 places, 1035 transitions, 14428 flow [2023-01-28 03:41:52,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=13156, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=996, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=766, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=14428, PETRI_PLACES=305, PETRI_TRANSITIONS=1035} [2023-01-28 03:41:52,729 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 259 predicate places. [2023-01-28 03:41:52,729 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 1035 transitions, 14428 flow [2023-01-28 03:41:52,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 140.0) internal successors, (3080), 22 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:41:52,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:41:52,730 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:41:52,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-01-28 03:41:52,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-01-28 03:41:52,935 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 03:41:52,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:41:52,935 INFO L85 PathProgramCache]: Analyzing trace with hash 115879115, now seen corresponding path program 3 times [2023-01-28 03:41:52,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:41:52,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545378762] [2023-01-28 03:41:52,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:41:52,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:41:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:41:53,309 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:41:53,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:41:53,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545378762] [2023-01-28 03:41:53,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545378762] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:41:53,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101741319] [2023-01-28 03:41:53,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 03:41:53,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:41:53,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:41:53,311 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:41:53,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-01-28 03:41:53,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 03:41:53,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:41:53,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 60 conjunts are in the unsatisfiable core [2023-01-28 03:41:53,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:41:53,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-01-28 03:41:53,587 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:41:53,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:41:53,687 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:41:53,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2023-01-28 03:41:53,718 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:41:53,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101741319] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:41:53,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:41:53,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 6] total 19 [2023-01-28 03:41:53,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489175085] [2023-01-28 03:41:53,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:41:53,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 03:41:53,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:41:53,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 03:41:53,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2023-01-28 03:41:53,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 372 [2023-01-28 03:41:53,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 1035 transitions, 14428 flow. Second operand has 20 states, 20 states have (on average 139.35) internal successors, (2787), 20 states have internal predecessors, (2787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:41:53,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:41:53,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 372 [2023-01-28 03:41:53,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:42:08,889 INFO L130 PetriNetUnfolder]: 47669/67833 cut-off events. [2023-01-28 03:42:08,890 INFO L131 PetriNetUnfolder]: For 1919418/1919497 co-relation queries the response was YES. [2023-01-28 03:42:10,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 539181 conditions, 67833 events. 47669/67833 cut-off events. For 1919418/1919497 co-relation queries the response was YES. Maximal size of possible extension queue 3001. Compared 457018 event pairs, 17374 based on Foata normal form. 40/65774 useless extension candidates. Maximal degree in co-relation 538340. Up to 31481 conditions per place. [2023-01-28 03:42:10,466 INFO L137 encePairwiseOnDemand]: 361/372 looper letters, 2015 selfloop transitions, 132 changer transitions 2/2154 dead transitions. [2023-01-28 03:42:10,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 2154 transitions, 32888 flow [2023-01-28 03:42:10,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-01-28 03:42:10,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-01-28 03:42:10,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4127 transitions. [2023-01-28 03:42:10,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962173579109063 [2023-01-28 03:42:10,470 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4127 transitions. [2023-01-28 03:42:10,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4127 transitions. [2023-01-28 03:42:10,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:42:10,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4127 transitions. [2023-01-28 03:42:10,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 147.39285714285714) internal successors, (4127), 28 states have internal predecessors, (4127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:42:10,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 372.0) internal successors, (10788), 29 states have internal predecessors, (10788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:42:10,480 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 372.0) internal successors, (10788), 29 states have internal predecessors, (10788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:42:10,480 INFO L175 Difference]: Start difference. First operand has 305 places, 1035 transitions, 14428 flow. Second operand 28 states and 4127 transitions. [2023-01-28 03:42:10,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 2154 transitions, 32888 flow [2023-01-28 03:42:40,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 2154 transitions, 32056 flow, removed 136 selfloop flow, removed 10 redundant places. [2023-01-28 03:42:40,547 INFO L231 Difference]: Finished difference. Result has 326 places, 1060 transitions, 14775 flow [2023-01-28 03:42:40,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=13961, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1035, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=917, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=14775, PETRI_PLACES=326, PETRI_TRANSITIONS=1060} [2023-01-28 03:42:40,548 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 280 predicate places. [2023-01-28 03:42:40,548 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 1060 transitions, 14775 flow [2023-01-28 03:42:40,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 139.35) internal successors, (2787), 20 states have internal predecessors, (2787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:42:40,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:42:40,549 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:42:40,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-01-28 03:42:40,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:42:40,756 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 03:42:40,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:42:40,757 INFO L85 PathProgramCache]: Analyzing trace with hash -2123938223, now seen corresponding path program 5 times [2023-01-28 03:42:40,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:42:40,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362104479] [2023-01-28 03:42:40,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:42:40,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:42:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:42:41,061 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:42:41,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:42:41,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362104479] [2023-01-28 03:42:41,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362104479] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:42:41,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160142220] [2023-01-28 03:42:41,062 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 03:42:41,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:42:41,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:42:41,063 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:42:41,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-28 03:42:41,182 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:42:41,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:42:41,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 51 conjunts are in the unsatisfiable core [2023-01-28 03:42:41,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:42:41,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-28 03:42:41,296 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:42:41,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:42:41,359 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:42:41,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 17 [2023-01-28 03:42:41,367 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 03:42:41,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2023-01-28 03:42:41,423 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:42:41,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160142220] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:42:41,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:42:41,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-01-28 03:42:41,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499317217] [2023-01-28 03:42:41,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:42:41,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 03:42:41,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:42:41,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 03:42:41,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-01-28 03:42:41,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 372 [2023-01-28 03:42:41,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 1060 transitions, 14775 flow. Second operand has 14 states, 14 states have (on average 148.64285714285714) internal successors, (2081), 14 states have internal predecessors, (2081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:42:41,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:42:41,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 372 [2023-01-28 03:42:41,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:42:56,655 INFO L130 PetriNetUnfolder]: 50089/71144 cut-off events. [2023-01-28 03:42:56,656 INFO L131 PetriNetUnfolder]: For 2049014/2049099 co-relation queries the response was YES. [2023-01-28 03:42:57,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 567287 conditions, 71144 events. 50089/71144 cut-off events. For 2049014/2049099 co-relation queries the response was YES. Maximal size of possible extension queue 3187. Compared 481748 event pairs, 18338 based on Foata normal form. 36/68980 useless extension candidates. Maximal degree in co-relation 566414. Up to 65921 conditions per place. [2023-01-28 03:42:58,265 INFO L137 encePairwiseOnDemand]: 362/372 looper letters, 1060 selfloop transitions, 94 changer transitions 1/1160 dead transitions. [2023-01-28 03:42:58,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 1160 transitions, 18362 flow [2023-01-28 03:42:58,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 03:42:58,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 03:42:58,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1410 transitions. [2023-01-28 03:42:58,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4211469534050179 [2023-01-28 03:42:58,267 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1410 transitions. [2023-01-28 03:42:58,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1410 transitions. [2023-01-28 03:42:58,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:42:58,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1410 transitions. [2023-01-28 03:42:58,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 156.66666666666666) internal successors, (1410), 9 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:42:58,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 372.0) internal successors, (3720), 10 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:42:58,269 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 372.0) internal successors, (3720), 10 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:42:58,270 INFO L175 Difference]: Start difference. First operand has 326 places, 1060 transitions, 14775 flow. Second operand 9 states and 1410 transitions. [2023-01-28 03:42:58,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 1160 transitions, 18362 flow [2023-01-28 03:43:45,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 1160 transitions, 18109 flow, removed 68 selfloop flow, removed 17 redundant places. [2023-01-28 03:43:45,189 INFO L231 Difference]: Finished difference. Result has 319 places, 1095 transitions, 15609 flow [2023-01-28 03:43:45,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=14522, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1060, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=967, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15609, PETRI_PLACES=319, PETRI_TRANSITIONS=1095} [2023-01-28 03:43:45,189 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 273 predicate places. [2023-01-28 03:43:45,190 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 1095 transitions, 15609 flow [2023-01-28 03:43:45,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 148.64285714285714) internal successors, (2081), 14 states have internal predecessors, (2081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:43:45,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:43:45,190 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:43:45,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-01-28 03:43:45,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:43:45,395 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 03:43:45,395 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:43:45,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1487457585, now seen corresponding path program 4 times [2023-01-28 03:43:45,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:43:45,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033786345] [2023-01-28 03:43:45,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:43:45,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:43:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:43:45,688 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:43:45,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:43:45,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033786345] [2023-01-28 03:43:45,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033786345] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:43:45,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791482905] [2023-01-28 03:43:45,689 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:43:45,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:43:45,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:43:45,690 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:43:45,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-28 03:43:45,816 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:43:45,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:43:45,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 49 conjunts are in the unsatisfiable core [2023-01-28 03:43:45,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:43:45,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-01-28 03:43:45,933 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:43:45,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:43:46,000 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:43:46,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 17 [2023-01-28 03:43:46,010 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 03:43:46,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2023-01-28 03:43:46,048 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:43:46,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791482905] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:43:46,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:43:46,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2023-01-28 03:43:46,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393157428] [2023-01-28 03:43:46,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:43:46,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 03:43:46,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:43:46,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 03:43:46,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-01-28 03:43:46,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 372 [2023-01-28 03:43:46,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 1095 transitions, 15609 flow. Second operand has 15 states, 15 states have (on average 148.8) internal successors, (2232), 15 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:43:46,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:43:46,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 372 [2023-01-28 03:43:46,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:44:02,152 INFO L130 PetriNetUnfolder]: 50849/72232 cut-off events. [2023-01-28 03:44:02,152 INFO L131 PetriNetUnfolder]: For 2204545/2204631 co-relation queries the response was YES. [2023-01-28 03:44:03,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 585126 conditions, 72232 events. 50849/72232 cut-off events. For 2204545/2204631 co-relation queries the response was YES. Maximal size of possible extension queue 3251. Compared 490157 event pairs, 19088 based on Foata normal form. 34/70024 useless extension candidates. Maximal degree in co-relation 584237. Up to 68509 conditions per place. [2023-01-28 03:44:04,303 INFO L137 encePairwiseOnDemand]: 361/372 looper letters, 1082 selfloop transitions, 77 changer transitions 1/1165 dead transitions. [2023-01-28 03:44:04,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 1165 transitions, 18754 flow [2023-01-28 03:44:04,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 03:44:04,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 03:44:04,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1262 transitions. [2023-01-28 03:44:04,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42405913978494625 [2023-01-28 03:44:04,305 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1262 transitions. [2023-01-28 03:44:04,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1262 transitions. [2023-01-28 03:44:04,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:44:04,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1262 transitions. [2023-01-28 03:44:04,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 157.75) internal successors, (1262), 8 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:44:04,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 372.0) internal successors, (3348), 9 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:44:04,307 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 372.0) internal successors, (3348), 9 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:44:04,307 INFO L175 Difference]: Start difference. First operand has 319 places, 1095 transitions, 15609 flow. Second operand 8 states and 1262 transitions. [2023-01-28 03:44:04,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 1165 transitions, 18754 flow [2023-01-28 03:44:45,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 1165 transitions, 18524 flow, removed 90 selfloop flow, removed 5 redundant places. [2023-01-28 03:44:45,520 INFO L231 Difference]: Finished difference. Result has 324 places, 1113 transitions, 16022 flow [2023-01-28 03:44:45,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=15383, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1095, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1023, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16022, PETRI_PLACES=324, PETRI_TRANSITIONS=1113} [2023-01-28 03:44:45,521 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 278 predicate places. [2023-01-28 03:44:45,521 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 1113 transitions, 16022 flow [2023-01-28 03:44:45,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 148.8) internal successors, (2232), 15 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:44:45,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:44:45,522 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:44:45,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-01-28 03:44:45,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:44:45,722 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 03:44:45,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:44:45,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1207337649, now seen corresponding path program 5 times [2023-01-28 03:44:45,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:44:45,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237440913] [2023-01-28 03:44:45,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:44:45,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:44:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:44:46,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:44:46,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:44:46,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237440913] [2023-01-28 03:44:46,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237440913] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:44:46,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101008295] [2023-01-28 03:44:46,046 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 03:44:46,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:44:46,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:44:46,047 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:44:46,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-28 03:44:46,177 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:44:46,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:44:46,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 60 conjunts are in the unsatisfiable core [2023-01-28 03:44:46,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:44:46,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:44:46,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 03:44:46,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-28 03:44:46,397 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:44:46,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:44:46,475 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0)))) (and (forall ((v_ArrVal_1057 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_1057) c_~X_0~0.base) .cse0) c_~s_2~0) (+ c_~s_6~0 1))) (forall ((v_ArrVal_1057 (Array Int Int))) (<= c_~s_6~0 (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_1057) c_~X_0~0.base) .cse0) c_~s_2~0))))) is different from false [2023-01-28 03:44:46,487 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:44:46,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 39 [2023-01-28 03:44:46,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 11 [2023-01-28 03:44:46,500 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 03:44:46,518 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 03:44:46,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 13 [2023-01-28 03:44:46,615 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:44:46,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101008295] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:44:46,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:44:46,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 19 [2023-01-28 03:44:46,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600026980] [2023-01-28 03:44:46,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:44:46,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-28 03:44:46,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:44:46,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-28 03:44:46,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=315, Unknown=1, NotChecked=36, Total=420 [2023-01-28 03:44:46,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 372 [2023-01-28 03:44:46,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 1113 transitions, 16022 flow. Second operand has 21 states, 21 states have (on average 135.0952380952381) internal successors, (2837), 21 states have internal predecessors, (2837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:44:46,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:44:46,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 372 [2023-01-28 03:44:46,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:45:02,959 INFO L130 PetriNetUnfolder]: 51609/73306 cut-off events. [2023-01-28 03:45:02,959 INFO L131 PetriNetUnfolder]: For 2208482/2208568 co-relation queries the response was YES. [2023-01-28 03:45:04,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593814 conditions, 73306 events. 51609/73306 cut-off events. For 2208482/2208568 co-relation queries the response was YES. Maximal size of possible extension queue 3315. Compared 498839 event pairs, 19270 based on Foata normal form. 34/71058 useless extension candidates. Maximal degree in co-relation 592908. Up to 68760 conditions per place. [2023-01-28 03:45:04,758 INFO L137 encePairwiseOnDemand]: 361/372 looper letters, 1082 selfloop transitions, 91 changer transitions 1/1179 dead transitions. [2023-01-28 03:45:04,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 1179 transitions, 19101 flow [2023-01-28 03:45:04,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 03:45:04,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 03:45:04,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1291 transitions. [2023-01-28 03:45:04,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3856033452807646 [2023-01-28 03:45:04,760 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1291 transitions. [2023-01-28 03:45:04,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1291 transitions. [2023-01-28 03:45:04,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:45:04,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1291 transitions. [2023-01-28 03:45:04,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 143.44444444444446) internal successors, (1291), 9 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:04,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 372.0) internal successors, (3720), 10 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:04,762 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 372.0) internal successors, (3720), 10 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:04,763 INFO L175 Difference]: Start difference. First operand has 324 places, 1113 transitions, 16022 flow. Second operand 9 states and 1291 transitions. [2023-01-28 03:45:04,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 1179 transitions, 19101 flow [2023-01-28 03:45:36,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 1179 transitions, 19008 flow, removed 42 selfloop flow, removed 2 redundant places. [2023-01-28 03:45:36,938 INFO L231 Difference]: Finished difference. Result has 332 places, 1126 transitions, 16508 flow [2023-01-28 03:45:36,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=15929, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1023, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16508, PETRI_PLACES=332, PETRI_TRANSITIONS=1126} [2023-01-28 03:45:36,939 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 286 predicate places. [2023-01-28 03:45:36,939 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 1126 transitions, 16508 flow [2023-01-28 03:45:36,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 135.0952380952381) internal successors, (2837), 21 states have internal predecessors, (2837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:36,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:45:36,939 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:45:36,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-01-28 03:45:37,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:45:37,140 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 03:45:37,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:45:37,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1441023550, now seen corresponding path program 4 times [2023-01-28 03:45:37,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:45:37,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102499065] [2023-01-28 03:45:37,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:45:37,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:45:37,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:45:37,773 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:45:37,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:45:37,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102499065] [2023-01-28 03:45:37,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102499065] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:45:37,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827764316] [2023-01-28 03:45:37,773 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:45:37,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:45:37,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:45:37,774 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:45:37,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-01-28 03:45:37,913 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:45:37,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:45:37,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 49 conjunts are in the unsatisfiable core [2023-01-28 03:45:37,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:45:38,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-01-28 03:45:38,049 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:45:38,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:45:38,123 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:45:38,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2023-01-28 03:45:38,131 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 03:45:38,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 13 [2023-01-28 03:45:38,179 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:45:38,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827764316] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:45:38,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:45:38,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 6] total 21 [2023-01-28 03:45:38,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637820769] [2023-01-28 03:45:38,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:45:38,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 03:45:38,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:45:38,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 03:45:38,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2023-01-28 03:45:38,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 372 [2023-01-28 03:45:38,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 1126 transitions, 16508 flow. Second operand has 22 states, 22 states have (on average 127.63636363636364) internal successors, (2808), 22 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:38,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:45:38,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 372 [2023-01-28 03:45:38,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:45:55,835 INFO L130 PetriNetUnfolder]: 53851/76445 cut-off events. [2023-01-28 03:45:55,835 INFO L131 PetriNetUnfolder]: For 2394986/2395073 co-relation queries the response was YES. [2023-01-28 03:45:57,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 626449 conditions, 76445 events. 53851/76445 cut-off events. For 2394986/2395073 co-relation queries the response was YES. Maximal size of possible extension queue 3483. Compared 521447 event pairs, 20172 based on Foata normal form. 38/74115 useless extension candidates. Maximal degree in co-relation 625527. Up to 71107 conditions per place. [2023-01-28 03:45:57,935 INFO L137 encePairwiseOnDemand]: 361/372 looper letters, 1131 selfloop transitions, 107 changer transitions 1/1244 dead transitions. [2023-01-28 03:45:57,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 1244 transitions, 20328 flow [2023-01-28 03:45:57,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 03:45:57,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 03:45:57,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1362 transitions. [2023-01-28 03:45:57,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36612903225806454 [2023-01-28 03:45:57,937 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1362 transitions. [2023-01-28 03:45:57,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1362 transitions. [2023-01-28 03:45:57,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:45:57,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1362 transitions. [2023-01-28 03:45:57,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 136.2) internal successors, (1362), 10 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:57,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 372.0) internal successors, (4092), 11 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:57,940 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 372.0) internal successors, (4092), 11 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:57,940 INFO L175 Difference]: Start difference. First operand has 332 places, 1126 transitions, 16508 flow. Second operand 10 states and 1362 transitions. [2023-01-28 03:45:57,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 1244 transitions, 20328 flow [2023-01-28 03:46:48,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 1244 transitions, 20203 flow, removed 39 selfloop flow, removed 6 redundant places. [2023-01-28 03:46:48,386 INFO L231 Difference]: Finished difference. Result has 337 places, 1165 transitions, 17472 flow [2023-01-28 03:46:48,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=16385, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1025, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17472, PETRI_PLACES=337, PETRI_TRANSITIONS=1165} [2023-01-28 03:46:48,387 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 291 predicate places. [2023-01-28 03:46:48,387 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 1165 transitions, 17472 flow [2023-01-28 03:46:48,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 127.63636363636364) internal successors, (2808), 22 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:46:48,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:46:48,387 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:46:48,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-01-28 03:46:48,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:46:48,590 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 03:46:48,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:46:48,590 INFO L85 PathProgramCache]: Analyzing trace with hash -104470698, now seen corresponding path program 1 times [2023-01-28 03:46:48,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:46:48,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625462600] [2023-01-28 03:46:48,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:46:48,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:46:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:46:48,838 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:46:48,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:46:48,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625462600] [2023-01-28 03:46:48,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625462600] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:46:48,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733437081] [2023-01-28 03:46:48,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:46:48,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:46:48,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:46:48,839 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:46:48,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-01-28 03:46:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:46:48,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 49 conjunts are in the unsatisfiable core [2023-01-28 03:46:48,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:46:49,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-01-28 03:46:49,090 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:46:49,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:46:49,156 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:46:49,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 17 [2023-01-28 03:46:49,163 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 03:46:49,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2023-01-28 03:46:49,201 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:46:49,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733437081] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:46:49,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:46:49,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2023-01-28 03:46:49,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917536470] [2023-01-28 03:46:49,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:46:49,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 03:46:49,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:46:49,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 03:46:49,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-01-28 03:46:49,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 372 [2023-01-28 03:46:49,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 1165 transitions, 17472 flow. Second operand has 15 states, 15 states have (on average 148.66666666666666) internal successors, (2230), 15 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:46:49,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:46:49,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 372 [2023-01-28 03:46:49,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:47:06,976 INFO L130 PetriNetUnfolder]: 54611/77487 cut-off events. [2023-01-28 03:47:06,976 INFO L131 PetriNetUnfolder]: For 2560231/2560318 co-relation queries the response was YES. [2023-01-28 03:47:08,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 644323 conditions, 77487 events. 54611/77487 cut-off events. For 2560231/2560318 co-relation queries the response was YES. Maximal size of possible extension queue 3561. Compared 529554 event pairs, 20724 based on Foata normal form. 36/75115 useless extension candidates. Maximal degree in co-relation 643399. Up to 73663 conditions per place. [2023-01-28 03:47:09,381 INFO L137 encePairwiseOnDemand]: 363/372 looper letters, 1149 selfloop transitions, 76 changer transitions 1/1231 dead transitions. [2023-01-28 03:47:09,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 1231 transitions, 20702 flow [2023-01-28 03:47:09,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 03:47:09,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 03:47:09,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1410 transitions. [2023-01-28 03:47:09,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4211469534050179 [2023-01-28 03:47:09,383 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1410 transitions. [2023-01-28 03:47:09,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1410 transitions. [2023-01-28 03:47:09,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:47:09,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1410 transitions. [2023-01-28 03:47:09,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 156.66666666666666) internal successors, (1410), 9 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:47:09,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 372.0) internal successors, (3720), 10 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:47:09,386 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 372.0) internal successors, (3720), 10 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:47:09,386 INFO L175 Difference]: Start difference. First operand has 337 places, 1165 transitions, 17472 flow. Second operand 9 states and 1410 transitions. [2023-01-28 03:47:09,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 1231 transitions, 20702 flow [2023-01-28 03:47:54,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 1231 transitions, 20512 flow, removed 69 selfloop flow, removed 6 redundant places. [2023-01-28 03:47:54,383 INFO L231 Difference]: Finished difference. Result has 341 places, 1178 transitions, 17862 flow [2023-01-28 03:47:54,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=17282, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1090, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17862, PETRI_PLACES=341, PETRI_TRANSITIONS=1178} [2023-01-28 03:47:54,384 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 295 predicate places. [2023-01-28 03:47:54,384 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 1178 transitions, 17862 flow [2023-01-28 03:47:54,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 148.66666666666666) internal successors, (2230), 15 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:47:54,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:47:54,385 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:47:54,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-01-28 03:47:54,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:47:54,591 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 03:47:54,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:47:54,591 INFO L85 PathProgramCache]: Analyzing trace with hash 95370232, now seen corresponding path program 2 times [2023-01-28 03:47:54,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:47:54,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312065835] [2023-01-28 03:47:54,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:47:54,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:47:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:47:54,921 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:47:54,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:47:54,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312065835] [2023-01-28 03:47:54,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312065835] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:47:54,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261406843] [2023-01-28 03:47:54,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:47:54,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:47:54,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:47:54,922 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:47:54,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-01-28 03:47:55,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:47:55,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:47:55,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 55 conjunts are in the unsatisfiable core [2023-01-28 03:47:55,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:47:55,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-01-28 03:47:55,244 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:47:55,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:47:55,332 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:47:55,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 17 [2023-01-28 03:47:55,342 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 03:47:55,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2023-01-28 03:47:55,403 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:47:55,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261406843] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:47:55,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:47:55,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 15 [2023-01-28 03:47:55,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529570500] [2023-01-28 03:47:55,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:47:55,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 03:47:55,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:47:55,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 03:47:55,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-01-28 03:47:55,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 372 [2023-01-28 03:47:55,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 1178 transitions, 17862 flow. Second operand has 16 states, 16 states have (on average 143.75) internal successors, (2300), 16 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:47:55,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:47:55,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 372 [2023-01-28 03:47:55,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:48:14,627 INFO L130 PetriNetUnfolder]: 56791/80592 cut-off events. [2023-01-28 03:48:14,628 INFO L131 PetriNetUnfolder]: For 2773324/2773425 co-relation queries the response was YES. [2023-01-28 03:48:16,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 676217 conditions, 80592 events. 56791/80592 cut-off events. For 2773324/2773425 co-relation queries the response was YES. Maximal size of possible extension queue 3627. Compared 553017 event pairs, 21162 based on Foata normal form. 44/78108 useless extension candidates. Maximal degree in co-relation 675237. Up to 75092 conditions per place. [2023-01-28 03:48:16,807 INFO L137 encePairwiseOnDemand]: 362/372 looper letters, 1215 selfloop transitions, 97 changer transitions 2/1319 dead transitions. [2023-01-28 03:48:16,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 1319 transitions, 22312 flow [2023-01-28 03:48:16,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 03:48:16,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 03:48:16,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2131 transitions. [2023-01-28 03:48:16,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40917818740399386 [2023-01-28 03:48:16,810 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2131 transitions. [2023-01-28 03:48:16,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2131 transitions. [2023-01-28 03:48:16,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:48:16,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2131 transitions. [2023-01-28 03:48:16,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 152.21428571428572) internal successors, (2131), 14 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:48:16,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 372.0) internal successors, (5580), 15 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:48:16,814 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 372.0) internal successors, (5580), 15 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:48:16,814 INFO L175 Difference]: Start difference. First operand has 341 places, 1178 transitions, 17862 flow. Second operand 14 states and 2131 transitions. [2023-01-28 03:48:16,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 1319 transitions, 22312 flow [2023-01-28 03:49:00,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 1319 transitions, 22155 flow, removed 53 selfloop flow, removed 5 redundant places. [2023-01-28 03:49:00,868 INFO L231 Difference]: Finished difference. Result has 352 places, 1211 transitions, 18945 flow [2023-01-28 03:49:00,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=17705, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=18945, PETRI_PLACES=352, PETRI_TRANSITIONS=1211} [2023-01-28 03:49:00,868 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 306 predicate places. [2023-01-28 03:49:00,869 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 1211 transitions, 18945 flow [2023-01-28 03:49:00,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 143.75) internal successors, (2300), 16 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:49:00,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:49:00,869 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:49:00,874 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-01-28 03:49:01,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-01-28 03:49:01,074 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 03:49:01,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:49:01,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1935088663, now seen corresponding path program 6 times [2023-01-28 03:49:01,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:49:01,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072742194] [2023-01-28 03:49:01,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:49:01,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:49:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:49:01,391 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:49:01,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:49:01,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072742194] [2023-01-28 03:49:01,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072742194] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:49:01,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812004588] [2023-01-28 03:49:01,391 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 03:49:01,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:49:01,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:49:01,392 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:49:01,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-01-28 03:49:01,620 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 03:49:01,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:49:01,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 60 conjunts are in the unsatisfiable core [2023-01-28 03:49:01,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:49:01,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:49:01,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 03:49:01,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-28 03:49:01,833 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:49:01,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:49:01,906 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~t_4~0 c_~s_2~0)) (.cse0 (+ c_~X_0~0.offset 4 (* 4 c_~i_7~0)))) (and (forall ((v_ArrVal_1282 (Array Int Int))) (<= (+ c_~s_6~0 (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_1282) c_~X_0~0.base) .cse0)) .cse1)) (forall ((v_ArrVal_1282 (Array Int Int))) (< .cse1 (+ c_~s_6~0 (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_1282) c_~X_0~0.base) .cse0) 1))))) is different from false [2023-01-28 03:49:01,916 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:49:01,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 41 [2023-01-28 03:49:01,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 12 [2023-01-28 03:49:01,927 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 03:49:01,932 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 03:49:01,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2023-01-28 03:49:02,022 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:49:02,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812004588] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:49:02,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:49:02,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 20 [2023-01-28 03:49:02,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062605998] [2023-01-28 03:49:02,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:49:02,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 03:49:02,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:49:02,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 03:49:02,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=351, Unknown=1, NotChecked=38, Total=462 [2023-01-28 03:49:02,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 372 [2023-01-28 03:49:02,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 1211 transitions, 18945 flow. Second operand has 22 states, 22 states have (on average 134.72727272727272) internal successors, (2964), 22 states have internal predecessors, (2964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:49:02,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:49:02,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 372 [2023-01-28 03:49:02,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:49:22,159 INFO L130 PetriNetUnfolder]: 57905/82109 cut-off events. [2023-01-28 03:49:22,160 INFO L131 PetriNetUnfolder]: For 2934228/2934315 co-relation queries the response was YES. [2023-01-28 03:49:24,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 699097 conditions, 82109 events. 57905/82109 cut-off events. For 2934228/2934315 co-relation queries the response was YES. Maximal size of possible extension queue 3741. Compared 564566 event pairs, 21306 based on Foata normal form. 36/79577 useless extension candidates. Maximal degree in co-relation 698082. Up to 75572 conditions per place. [2023-01-28 03:49:24,600 INFO L137 encePairwiseOnDemand]: 356/372 looper letters, 1170 selfloop transitions, 126 changer transitions 1/1302 dead transitions. [2023-01-28 03:49:24,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 1302 transitions, 22765 flow [2023-01-28 03:49:24,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 03:49:24,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 03:49:24,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1567 transitions. [2023-01-28 03:49:24,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3829423264907136 [2023-01-28 03:49:24,602 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1567 transitions. [2023-01-28 03:49:24,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1567 transitions. [2023-01-28 03:49:24,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:49:24,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1567 transitions. [2023-01-28 03:49:24,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 142.45454545454547) internal successors, (1567), 11 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:49:24,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 372.0) internal successors, (4464), 12 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:49:24,606 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 372.0) internal successors, (4464), 12 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:49:24,606 INFO L175 Difference]: Start difference. First operand has 352 places, 1211 transitions, 18945 flow. Second operand 11 states and 1567 transitions. [2023-01-28 03:49:24,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 1302 transitions, 22765 flow [2023-01-28 03:50:08,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 1302 transitions, 22360 flow, removed 176 selfloop flow, removed 6 redundant places. [2023-01-28 03:50:08,727 INFO L231 Difference]: Finished difference. Result has 359 places, 1238 transitions, 19648 flow [2023-01-28 03:50:08,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=18540, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1091, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=19648, PETRI_PLACES=359, PETRI_TRANSITIONS=1238} [2023-01-28 03:50:08,727 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 313 predicate places. [2023-01-28 03:50:08,728 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 1238 transitions, 19648 flow [2023-01-28 03:50:08,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 134.72727272727272) internal successors, (2964), 22 states have internal predecessors, (2964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:08,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:50:08,728 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:50:08,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-01-28 03:50:08,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-01-28 03:50:08,933 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 03:50:08,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:50:08,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1001338396, now seen corresponding path program 5 times [2023-01-28 03:50:08,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:50:08,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503491516] [2023-01-28 03:50:08,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:50:08,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:50:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:50:09,333 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:50:09,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:50:09,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503491516] [2023-01-28 03:50:09,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503491516] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:50:09,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33459296] [2023-01-28 03:50:09,333 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 03:50:09,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:50:09,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:50:09,334 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:50:09,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-01-28 03:50:09,469 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 03:50:09,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:50:09,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 58 conjunts are in the unsatisfiable core [2023-01-28 03:50:09,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:50:09,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:50:09,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-01-28 03:50:09,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-28 03:50:09,704 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:50:09,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:50:09,870 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:50:09,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 52 [2023-01-28 03:50:09,883 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 03:50:09,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:50:09,886 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:50:09,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2023-01-28 03:50:09,988 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:50:09,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33459296] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:50:09,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:50:09,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 23 [2023-01-28 03:50:09,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593287735] [2023-01-28 03:50:09,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:50:09,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 03:50:09,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:50:09,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 03:50:09,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2023-01-28 03:50:09,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 372 [2023-01-28 03:50:09,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 1238 transitions, 19648 flow. Second operand has 25 states, 25 states have (on average 134.76) internal successors, (3369), 25 states have internal predecessors, (3369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:50:09,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:50:09,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 372 [2023-01-28 03:50:09,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand