/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 10:53:28,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 10:53:28,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 10:53:28,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 10:53:28,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 10:53:28,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 10:53:28,635 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 10:53:28,637 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 10:53:28,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 10:53:28,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 10:53:28,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 10:53:28,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 10:53:28,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 10:53:28,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 10:53:28,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 10:53:28,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 10:53:28,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 10:53:28,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 10:53:28,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 10:53:28,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 10:53:28,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 10:53:28,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 10:53:28,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 10:53:28,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 10:53:28,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 10:53:28,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 10:53:28,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 10:53:28,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 10:53:28,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 10:53:28,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 10:53:28,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 10:53:28,664 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 10:53:28,665 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 10:53:28,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 10:53:28,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 10:53:28,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 10:53:28,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 10:53:28,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 10:53:28,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 10:53:28,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 10:53:28,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 10:53:28,673 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 10:53:28,693 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 10:53:28,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 10:53:28,694 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 10:53:28,694 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 10:53:28,695 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 10:53:28,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 10:53:28,695 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 10:53:28,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 10:53:28,695 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 10:53:28,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 10:53:28,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 10:53:28,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 10:53:28,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 10:53:28,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 10:53:28,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 10:53:28,696 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 10:53:28,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 10:53:28,696 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 10:53:28,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 10:53:28,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 10:53:28,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 10:53:28,697 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 10:53:28,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 10:53:28,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 10:53:28,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 10:53:28,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 10:53:28,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 10:53:28,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 10:53:28,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 10:53:28,697 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 10:53:28,698 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 10:53:28,698 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 10:53:28,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 10:53:28,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 10:53:28,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 10:53:28,847 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 10:53:28,847 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 10:53:28,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c [2023-01-28 10:53:29,835 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 10:53:29,978 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 10:53:29,978 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c [2023-01-28 10:53:29,982 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4a861158/01e442dc6beb483d8901922c5c822e66/FLAGd96f4335b [2023-01-28 10:53:29,996 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4a861158/01e442dc6beb483d8901922c5c822e66 [2023-01-28 10:53:29,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 10:53:29,999 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 10:53:30,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 10:53:30,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 10:53:30,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 10:53:30,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:53:29" (1/1) ... [2023-01-28 10:53:30,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@265c623a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:53:30, skipping insertion in model container [2023-01-28 10:53:30,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:53:29" (1/1) ... [2023-01-28 10:53:30,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 10:53:30,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 10:53:30,157 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c[2924,2937] [2023-01-28 10:53:30,162 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 10:53:30,169 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 10:53:30,188 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c[2924,2937] [2023-01-28 10:53:30,190 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 10:53:30,197 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 10:53:30,197 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 10:53:30,201 INFO L208 MainTranslator]: Completed translation [2023-01-28 10:53:30,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:53:30 WrapperNode [2023-01-28 10:53:30,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 10:53:30,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 10:53:30,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 10:53:30,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 10:53:30,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:53:30" (1/1) ... [2023-01-28 10:53:30,220 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:53:30" (1/1) ... [2023-01-28 10:53:30,251 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 196 [2023-01-28 10:53:30,251 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 10:53:30,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 10:53:30,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 10:53:30,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 10:53:30,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:53:30" (1/1) ... [2023-01-28 10:53:30,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:53:30" (1/1) ... [2023-01-28 10:53:30,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:53:30" (1/1) ... [2023-01-28 10:53:30,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:53:30" (1/1) ... [2023-01-28 10:53:30,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:53:30" (1/1) ... [2023-01-28 10:53:30,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:53:30" (1/1) ... [2023-01-28 10:53:30,284 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:53:30" (1/1) ... [2023-01-28 10:53:30,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:53:30" (1/1) ... [2023-01-28 10:53:30,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 10:53:30,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 10:53:30,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 10:53:30,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 10:53:30,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:53:30" (1/1) ... [2023-01-28 10:53:30,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 10:53:30,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:53:30,320 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 10:53:30,336 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 10:53:30,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 10:53:30,350 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 10:53:30,350 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 10:53:30,350 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 10:53:30,350 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 10:53:30,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 10:53:30,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 10:53:30,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 10:53:30,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 10:53:30,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 10:53:30,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 10:53:30,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 10:53:30,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 10:53:30,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 10:53:30,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 10:53:30,352 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 10:53:30,420 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 10:53:30,422 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 10:53:30,705 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 10:53:30,786 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 10:53:30,786 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-28 10:53:30,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:53:30 BoogieIcfgContainer [2023-01-28 10:53:30,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 10:53:30,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 10:53:30,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 10:53:30,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 10:53:30,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 10:53:29" (1/3) ... [2023-01-28 10:53:30,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ca13511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:53:30, skipping insertion in model container [2023-01-28 10:53:30,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:53:30" (2/3) ... [2023-01-28 10:53:30,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ca13511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:53:30, skipping insertion in model container [2023-01-28 10:53:30,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:53:30" (3/3) ... [2023-01-28 10:53:30,799 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-dec-subseq.wvr.c [2023-01-28 10:53:30,810 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 10:53:30,810 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 10:53:30,810 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 10:53:30,861 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 10:53:30,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 178 transitions, 372 flow [2023-01-28 10:53:30,991 INFO L130 PetriNetUnfolder]: 15/176 cut-off events. [2023-01-28 10:53:30,992 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 10:53:30,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 176 events. 15/176 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 108 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 143. Up to 2 conditions per place. [2023-01-28 10:53:30,995 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 178 transitions, 372 flow [2023-01-28 10:53:30,998 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 168 transitions, 348 flow [2023-01-28 10:53:31,000 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 10:53:31,009 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 168 transitions, 348 flow [2023-01-28 10:53:31,011 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 168 transitions, 348 flow [2023-01-28 10:53:31,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 168 transitions, 348 flow [2023-01-28 10:53:31,038 INFO L130 PetriNetUnfolder]: 15/168 cut-off events. [2023-01-28 10:53:31,039 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 10:53:31,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 168 events. 15/168 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 109 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 143. Up to 2 conditions per place. [2023-01-28 10:53:31,040 INFO L119 LiptonReduction]: Number of co-enabled transitions 690 [2023-01-28 10:53:34,973 INFO L134 LiptonReduction]: Checked pairs total: 1199 [2023-01-28 10:53:34,973 INFO L136 LiptonReduction]: Total number of compositions: 174 [2023-01-28 10:53:34,982 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 10:53:34,986 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;@653ce51, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 10:53:34,986 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 10:53:34,990 INFO L130 PetriNetUnfolder]: 5/22 cut-off events. [2023-01-28 10:53:34,990 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 10:53:34,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:53:34,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:53:34,991 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:53:34,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:53:34,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1033780346, now seen corresponding path program 1 times [2023-01-28 10:53:35,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:53:35,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075522269] [2023-01-28 10:53:35,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:35,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:53:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:35,257 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 10:53:35,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:53:35,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075522269] [2023-01-28 10:53:35,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075522269] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:53:35,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:53:35,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 10:53:35,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756949546] [2023-01-28 10:53:35,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:53:35,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 10:53:35,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:53:35,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 10:53:35,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 10:53:35,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 352 [2023-01-28 10:53:35,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:35,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:53:35,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 352 [2023-01-28 10:53:35,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:53:35,367 INFO L130 PetriNetUnfolder]: 91/155 cut-off events. [2023-01-28 10:53:35,367 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-01-28 10:53:35,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 155 events. 91/155 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 392 event pairs, 57 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 270. Up to 155 conditions per place. [2023-01-28 10:53:35,371 INFO L137 encePairwiseOnDemand]: 349/352 looper letters, 22 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2023-01-28 10:53:35,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 24 transitions, 108 flow [2023-01-28 10:53:35,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 10:53:35,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 10:53:35,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 415 transitions. [2023-01-28 10:53:35,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39299242424242425 [2023-01-28 10:53:35,387 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 415 transitions. [2023-01-28 10:53:35,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 415 transitions. [2023-01-28 10:53:35,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:53:35,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 415 transitions. [2023-01-28 10:53:35,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:35,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:35,401 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:35,402 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 58 flow. Second operand 3 states and 415 transitions. [2023-01-28 10:53:35,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 24 transitions, 108 flow [2023-01-28 10:53:35,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 24 transitions, 100 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 10:53:35,406 INFO L231 Difference]: Finished difference. Result has 24 places, 24 transitions, 62 flow [2023-01-28 10:53:35,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=24, PETRI_TRANSITIONS=24} [2023-01-28 10:53:35,412 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, -1 predicate places. [2023-01-28 10:53:35,412 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 24 transitions, 62 flow [2023-01-28 10:53:35,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:35,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:53:35,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:53:35,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 10:53:35,414 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:53:35,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:53:35,414 INFO L85 PathProgramCache]: Analyzing trace with hash -164115016, now seen corresponding path program 1 times [2023-01-28 10:53:35,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:53:35,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61427434] [2023-01-28 10:53:35,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:35,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:53:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:35,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:53:35,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:53:35,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61427434] [2023-01-28 10:53:35,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61427434] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:53:35,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676250249] [2023-01-28 10:53:35,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:35,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:53:35,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:53:35,514 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 10:53:35,559 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 10:53:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:35,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 10:53:35,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:53:35,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:53:35,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:53:35,719 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 10:53:35,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676250249] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 10:53:35,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 10:53:35,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 9 [2023-01-28 10:53:35,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711712495] [2023-01-28 10:53:35,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:53:35,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 10:53:35,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:53:35,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 10:53:35,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-01-28 10:53:35,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 352 [2023-01-28 10:53:35,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 24 transitions, 62 flow. Second operand has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:35,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:53:35,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 352 [2023-01-28 10:53:35,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:53:35,827 INFO L130 PetriNetUnfolder]: 157/261 cut-off events. [2023-01-28 10:53:35,827 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 10:53:35,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 261 events. 157/261 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 789 event pairs, 39 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 526. Up to 97 conditions per place. [2023-01-28 10:53:35,829 INFO L137 encePairwiseOnDemand]: 345/352 looper letters, 35 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2023-01-28 10:53:35,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 43 transitions, 188 flow [2023-01-28 10:53:35,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 10:53:35,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 10:53:35,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 806 transitions. [2023-01-28 10:53:35,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3816287878787879 [2023-01-28 10:53:35,831 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 806 transitions. [2023-01-28 10:53:35,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 806 transitions. [2023-01-28 10:53:35,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:53:35,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 806 transitions. [2023-01-28 10:53:35,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 134.33333333333334) internal successors, (806), 6 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:35,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:35,840 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:35,840 INFO L175 Difference]: Start difference. First operand has 24 places, 24 transitions, 62 flow. Second operand 6 states and 806 transitions. [2023-01-28 10:53:35,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 43 transitions, 188 flow [2023-01-28 10:53:35,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 43 transitions, 184 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 10:53:35,841 INFO L231 Difference]: Finished difference. Result has 30 places, 27 transitions, 93 flow [2023-01-28 10:53:35,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=93, PETRI_PLACES=30, PETRI_TRANSITIONS=27} [2023-01-28 10:53:35,842 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2023-01-28 10:53:35,842 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 27 transitions, 93 flow [2023-01-28 10:53:35,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:35,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:53:35,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:53:35,850 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 10:53:36,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:53:36,044 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:53:36,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:53:36,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1388554985, now seen corresponding path program 1 times [2023-01-28 10:53:36,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:53:36,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60655459] [2023-01-28 10:53:36,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:36,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:53:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:36,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:53:36,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:53:36,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60655459] [2023-01-28 10:53:36,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60655459] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:53:36,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:53:36,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 10:53:36,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640719604] [2023-01-28 10:53:36,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:53:36,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 10:53:36,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:53:36,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 10:53:36,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 10:53:36,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 352 [2023-01-28 10:53:36,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 147.25) internal successors, (589), 4 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:36,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:53:36,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 352 [2023-01-28 10:53:36,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:53:36,358 INFO L130 PetriNetUnfolder]: 294/476 cut-off events. [2023-01-28 10:53:36,358 INFO L131 PetriNetUnfolder]: For 175/175 co-relation queries the response was YES. [2023-01-28 10:53:36,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1150 conditions, 476 events. 294/476 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1767 event pairs, 55 based on Foata normal form. 0/443 useless extension candidates. Maximal degree in co-relation 1126. Up to 250 conditions per place. [2023-01-28 10:53:36,362 INFO L137 encePairwiseOnDemand]: 345/352 looper letters, 46 selfloop transitions, 16 changer transitions 0/62 dead transitions. [2023-01-28 10:53:36,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 62 transitions, 336 flow [2023-01-28 10:53:36,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 10:53:36,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 10:53:36,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 769 transitions. [2023-01-28 10:53:36,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4369318181818182 [2023-01-28 10:53:36,364 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 769 transitions. [2023-01-28 10:53:36,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 769 transitions. [2023-01-28 10:53:36,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:53:36,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 769 transitions. [2023-01-28 10:53:36,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.8) internal successors, (769), 5 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:36,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:36,369 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:36,369 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 93 flow. Second operand 5 states and 769 transitions. [2023-01-28 10:53:36,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 62 transitions, 336 flow [2023-01-28 10:53:36,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 62 transitions, 332 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 10:53:36,373 INFO L231 Difference]: Finished difference. Result has 35 places, 41 transitions, 234 flow [2023-01-28 10:53:36,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=234, PETRI_PLACES=35, PETRI_TRANSITIONS=41} [2023-01-28 10:53:36,374 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 10 predicate places. [2023-01-28 10:53:36,374 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 41 transitions, 234 flow [2023-01-28 10:53:36,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.25) internal successors, (589), 4 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:36,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:53:36,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:53:36,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 10:53:36,374 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:53:36,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:53:36,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1352553143, now seen corresponding path program 2 times [2023-01-28 10:53:36,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:53:36,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787005626] [2023-01-28 10:53:36,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:36,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:53:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:36,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:53:36,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:53:36,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787005626] [2023-01-28 10:53:36,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787005626] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:53:36,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:53:36,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 10:53:36,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859026647] [2023-01-28 10:53:36,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:53:36,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 10:53:36,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:53:36,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 10:53:36,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 10:53:36,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 352 [2023-01-28 10:53:36,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 41 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:36,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:53:36,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 352 [2023-01-28 10:53:36,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:53:36,572 INFO L130 PetriNetUnfolder]: 477/766 cut-off events. [2023-01-28 10:53:36,572 INFO L131 PetriNetUnfolder]: For 1197/1219 co-relation queries the response was YES. [2023-01-28 10:53:36,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2701 conditions, 766 events. 477/766 cut-off events. For 1197/1219 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3156 event pairs, 137 based on Foata normal form. 16/766 useless extension candidates. Maximal degree in co-relation 2675. Up to 433 conditions per place. [2023-01-28 10:53:36,576 INFO L137 encePairwiseOnDemand]: 349/352 looper letters, 62 selfloop transitions, 4 changer transitions 2/70 dead transitions. [2023-01-28 10:53:36,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 70 transitions, 562 flow [2023-01-28 10:53:36,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 10:53:36,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 10:53:36,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2023-01-28 10:53:36,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2023-01-28 10:53:36,578 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 504 transitions. [2023-01-28 10:53:36,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 504 transitions. [2023-01-28 10:53:36,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:53:36,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 504 transitions. [2023-01-28 10:53:36,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:36,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:36,581 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:36,581 INFO L175 Difference]: Start difference. First operand has 35 places, 41 transitions, 234 flow. Second operand 3 states and 504 transitions. [2023-01-28 10:53:36,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 70 transitions, 562 flow [2023-01-28 10:53:36,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 70 transitions, 562 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 10:53:36,588 INFO L231 Difference]: Finished difference. Result has 38 places, 44 transitions, 271 flow [2023-01-28 10:53:36,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=271, PETRI_PLACES=38, PETRI_TRANSITIONS=44} [2023-01-28 10:53:36,589 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 13 predicate places. [2023-01-28 10:53:36,589 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 44 transitions, 271 flow [2023-01-28 10:53:36,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:36,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:53:36,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:53:36,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 10:53:36,590 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:53:36,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:53:36,591 INFO L85 PathProgramCache]: Analyzing trace with hash -84645957, now seen corresponding path program 1 times [2023-01-28 10:53:36,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:53:36,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707603916] [2023-01-28 10:53:36,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:36,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:53:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:36,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:53:36,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:53:36,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707603916] [2023-01-28 10:53:36,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707603916] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:53:36,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654290578] [2023-01-28 10:53:36,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:36,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:53:36,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:53:36,777 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 10:53:36,779 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 10:53:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:36,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 10:53:36,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:53:36,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:53:36,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 10:53:36,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654290578] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:53:36,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 10:53:36,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2023-01-28 10:53:36,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893052085] [2023-01-28 10:53:36,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:53:36,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 10:53:36,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:53:36,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 10:53:36,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 10:53:36,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 352 [2023-01-28 10:53:36,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 44 transitions, 271 flow. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:36,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:53:36,866 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 352 [2023-01-28 10:53:36,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:53:36,941 INFO L130 PetriNetUnfolder]: 421/703 cut-off events. [2023-01-28 10:53:36,941 INFO L131 PetriNetUnfolder]: For 985/985 co-relation queries the response was YES. [2023-01-28 10:53:36,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2535 conditions, 703 events. 421/703 cut-off events. For 985/985 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2734 event pairs, 94 based on Foata normal form. 22/724 useless extension candidates. Maximal degree in co-relation 2506. Up to 587 conditions per place. [2023-01-28 10:53:36,944 INFO L137 encePairwiseOnDemand]: 349/352 looper letters, 51 selfloop transitions, 2 changer transitions 5/58 dead transitions. [2023-01-28 10:53:36,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 58 transitions, 448 flow [2023-01-28 10:53:36,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 10:53:36,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 10:53:36,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 498 transitions. [2023-01-28 10:53:36,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715909090909091 [2023-01-28 10:53:36,946 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 498 transitions. [2023-01-28 10:53:36,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 498 transitions. [2023-01-28 10:53:36,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:53:36,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 498 transitions. [2023-01-28 10:53:36,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:36,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:36,949 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:36,949 INFO L175 Difference]: Start difference. First operand has 38 places, 44 transitions, 271 flow. Second operand 3 states and 498 transitions. [2023-01-28 10:53:36,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 58 transitions, 448 flow [2023-01-28 10:53:36,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 58 transitions, 444 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 10:53:36,951 INFO L231 Difference]: Finished difference. Result has 40 places, 44 transitions, 273 flow [2023-01-28 10:53:36,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=40, PETRI_TRANSITIONS=44} [2023-01-28 10:53:36,952 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 15 predicate places. [2023-01-28 10:53:36,952 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 44 transitions, 273 flow [2023-01-28 10:53:36,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:36,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:53:36,952 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] [2023-01-28 10:53:36,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-28 10:53:37,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:53:37,157 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:53:37,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:53:37,158 INFO L85 PathProgramCache]: Analyzing trace with hash 286694240, now seen corresponding path program 1 times [2023-01-28 10:53:37,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:53:37,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353938305] [2023-01-28 10:53:37,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:37,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:53:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:37,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:53:37,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:53:37,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353938305] [2023-01-28 10:53:37,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353938305] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:53:37,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:53:37,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 10:53:37,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117455398] [2023-01-28 10:53:37,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:53:37,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 10:53:37,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:53:37,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 10:53:37,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 10:53:37,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 352 [2023-01-28 10:53:37,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 44 transitions, 273 flow. Second operand has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:37,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:53:37,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 352 [2023-01-28 10:53:37,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:53:37,372 INFO L130 PetriNetUnfolder]: 448/776 cut-off events. [2023-01-28 10:53:37,372 INFO L131 PetriNetUnfolder]: For 1574/1606 co-relation queries the response was YES. [2023-01-28 10:53:37,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2933 conditions, 776 events. 448/776 cut-off events. For 1574/1606 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3252 event pairs, 242 based on Foata normal form. 42/807 useless extension candidates. Maximal degree in co-relation 2509. Up to 660 conditions per place. [2023-01-28 10:53:37,377 INFO L137 encePairwiseOnDemand]: 347/352 looper letters, 41 selfloop transitions, 2 changer transitions 20/65 dead transitions. [2023-01-28 10:53:37,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 65 transitions, 505 flow [2023-01-28 10:53:37,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 10:53:37,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 10:53:37,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 714 transitions. [2023-01-28 10:53:37,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4056818181818182 [2023-01-28 10:53:37,381 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 714 transitions. [2023-01-28 10:53:37,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 714 transitions. [2023-01-28 10:53:37,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:53:37,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 714 transitions. [2023-01-28 10:53:37,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 142.8) internal successors, (714), 5 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:37,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:37,385 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:37,385 INFO L175 Difference]: Start difference. First operand has 40 places, 44 transitions, 273 flow. Second operand 5 states and 714 transitions. [2023-01-28 10:53:37,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 65 transitions, 505 flow [2023-01-28 10:53:37,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 65 transitions, 503 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 10:53:37,389 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 287 flow [2023-01-28 10:53:37,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=287, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2023-01-28 10:53:37,391 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 21 predicate places. [2023-01-28 10:53:37,391 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 287 flow [2023-01-28 10:53:37,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:37,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:53:37,392 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] [2023-01-28 10:53:37,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 10:53:37,392 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:53:37,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:53:37,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1802696178, now seen corresponding path program 1 times [2023-01-28 10:53:37,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:53:37,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714747919] [2023-01-28 10:53:37,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:37,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:53:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:38,195 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:53:38,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:53:38,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714747919] [2023-01-28 10:53:38,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714747919] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:53:38,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267560484] [2023-01-28 10:53:38,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:38,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:53:38,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:53:38,197 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 10:53:38,199 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 10:53:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:38,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 48 conjunts are in the unsatisfiable core [2023-01-28 10:53:38,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:53:38,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:53:38,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 10:53:38,787 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2023-01-28 10:53:38,787 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 42 treesize of output 10 [2023-01-28 10:53:38,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:53:38,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:53:39,085 WARN L839 $PredicateComparison]: unable to prove that (or (<= c_~n~0 c_~end~0) (let ((.cse1 (+ (* c_~end~0 4) c_~queue~0.offset)) (.cse3 (+ c_~A~0.offset (* c_~i~0 4)))) (and (forall ((v_ArrVal_173 (Array Int Int)) (~queue~0.base Int)) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_173))) (let ((.cse0 (select .cse2 ~queue~0.base))) (or (< (select .cse0 (+ (* c_~start~0 4) c_~queue~0.offset)) (+ c_~v_old~0 1)) (not (= (select .cse0 .cse1) (select (select .cse2 c_~A~0.base) .cse3))))))) (or (forall ((v_ArrVal_173 (Array Int Int)) (~queue~0.base Int)) (not (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_173))) (= (select (select .cse4 ~queue~0.base) .cse1) (select (select .cse4 c_~A~0.base) .cse3))))) (not (= (mod c_~ok~0 256) 0))))) (<= (+ c_~end~0 1) c_~start~0) (< c_~start~0 0) (< c_~last~0 |c_thread1Thread1of1ForFork1_#t~mem1#1|)) is different from false [2023-01-28 10:53:39,156 INFO L321 Elim1Store]: treesize reduction 11, result has 87.1 percent of original size [2023-01-28 10:53:39,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 258 treesize of output 251 [2023-01-28 10:53:39,180 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:53:39,180 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 174 treesize of output 185 [2023-01-28 10:53:39,195 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:53:39,195 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 144 treesize of output 137 [2023-01-28 10:53:39,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:53:39,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267560484] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:53:39,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:53:39,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 29 [2023-01-28 10:53:39,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433924657] [2023-01-28 10:53:39,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:53:39,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 10:53:39,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:53:39,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 10:53:39,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=696, Unknown=1, NotChecked=56, Total=930 [2023-01-28 10:53:39,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 352 [2023-01-28 10:53:39,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 287 flow. Second operand has 31 states, 31 states have (on average 86.12903225806451) internal successors, (2670), 31 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:39,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:53:39,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 352 [2023-01-28 10:53:39,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:53:41,009 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse4 (+ (* c_~start~0 4) c_~queue~0.offset)) (.cse2 (+ (* c_~end~0 4) c_~queue~0.offset)) (.cse7 (+ c_~A~0.offset (* c_~i~0 4))) (.cse10 (< c_~last~0 |c_thread1Thread1of1ForFork1_#t~mem1#1|)) (.cse0 (<= c_~n~0 c_~end~0)) (.cse8 (<= (+ c_~end~0 1) c_~start~0)) (.cse5 (+ c_~v_old~0 1)) (.cse6 (not (= (mod c_~ok~0 256) 0))) (.cse11 (= c_~start~0 c_~end~0)) (.cse9 (< c_~start~0 0))) (and (or .cse0 (let ((.cse3 (select (select |c_#memory_int| c_~A~0.base) .cse7))) (and (forall ((~queue~0.base Int)) (let ((.cse1 (select |c_#memory_int| ~queue~0.base))) (or (not (= (select .cse1 .cse2) .cse3)) (< (select .cse1 .cse4) .cse5)))) (or (forall ((~queue~0.base Int)) (not (= (select (select |c_#memory_int| ~queue~0.base) .cse2) .cse3))) .cse6))) .cse8 .cse9 .cse10) (or .cse0 .cse8 .cse9 (< (+ 1 |c_ULTIMATE.start_create_fresh_int_array_~i~1#1|) |c_ULTIMATE.start_create_fresh_int_array_~size#1|) (and (< |c_#StackHeapBarrier| (+ |c_ULTIMATE.start_main_~#t2~0#1.base| 1)) .cse6 .cse11)) (= c_~ok~0 1) (or .cse0 .cse8 (and .cse6 (< |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|) .cse11) .cse9) (or .cse0 (and (forall ((v_ArrVal_173 (Array Int Int)) (~queue~0.base Int)) (let ((.cse13 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_173))) (let ((.cse12 (select .cse13 ~queue~0.base))) (or (< (select .cse12 .cse4) .cse5) (not (= (select .cse12 .cse2) (select (select .cse13 c_~A~0.base) .cse7))))))) (or (forall ((v_ArrVal_173 (Array Int Int)) (~queue~0.base Int)) (not (let ((.cse14 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_173))) (= (select (select .cse14 ~queue~0.base) .cse2) (select (select .cse14 c_~A~0.base) .cse7))))) .cse6)) .cse8 .cse9 .cse10) (or .cse0 .cse8 (and (not (= |c_ULTIMATE.start_main_~#t2~0#1.base| c_~A~0.base)) (< c_~last~0 .cse5) .cse6 .cse11) .cse9))) is different from false [2023-01-28 10:53:43,928 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* c_~start~0 4) c_~queue~0.offset)) (.cse6 (+ (* c_~end~0 4) c_~queue~0.offset)) (.cse8 (+ c_~A~0.offset (* c_~i~0 4))) (.cse10 (< c_~last~0 |c_thread1Thread1of1ForFork1_#t~mem1#1|)) (.cse4 (<= c_~n~0 c_~end~0)) (.cse9 (<= (+ c_~end~0 1) c_~start~0)) (.cse1 (+ c_~v_old~0 1)) (.cse2 (not (= (mod c_~ok~0 256) 0))) (.cse11 (= c_~start~0 c_~end~0)) (.cse3 (< c_~start~0 0))) (and (or (and (< (select (select |c_#memory_int| c_~queue~0.base) .cse0) .cse1) .cse2) .cse3 (<= c_~end~0 c_~start~0) (<= c_~n~0 c_~start~0)) (or .cse4 (let ((.cse7 (select (select |c_#memory_int| c_~A~0.base) .cse8))) (and (forall ((~queue~0.base Int)) (let ((.cse5 (select |c_#memory_int| ~queue~0.base))) (or (not (= (select .cse5 .cse6) .cse7)) (< (select .cse5 .cse0) .cse1)))) (or (forall ((~queue~0.base Int)) (not (= (select (select |c_#memory_int| ~queue~0.base) .cse6) .cse7))) .cse2))) .cse9 .cse3 .cse10) (= c_~new~0 c_~v_old~0) (or .cse4 .cse9 .cse3 (< (+ 1 |c_ULTIMATE.start_create_fresh_int_array_~i~1#1|) |c_ULTIMATE.start_create_fresh_int_array_~size#1|) (and (< |c_#StackHeapBarrier| (+ |c_ULTIMATE.start_main_~#t2~0#1.base| 1)) .cse2 .cse11)) (= c_~ok~0 1) (or .cse4 .cse9 (and .cse2 (< |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|) .cse11) .cse3) (or .cse4 (and (forall ((v_ArrVal_173 (Array Int Int)) (~queue~0.base Int)) (let ((.cse13 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_173))) (let ((.cse12 (select .cse13 ~queue~0.base))) (or (< (select .cse12 .cse0) .cse1) (not (= (select .cse12 .cse6) (select (select .cse13 c_~A~0.base) .cse8))))))) (or (forall ((v_ArrVal_173 (Array Int Int)) (~queue~0.base Int)) (not (let ((.cse14 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_173))) (= (select (select .cse14 ~queue~0.base) .cse6) (select (select .cse14 c_~A~0.base) .cse8))))) .cse2)) .cse9 .cse3 .cse10) (or .cse4 .cse9 (and (not (= |c_ULTIMATE.start_main_~#t2~0#1.base| c_~A~0.base)) (< c_~last~0 .cse1) .cse2 .cse11) .cse3))) is different from false [2023-01-28 10:53:46,720 INFO L130 PetriNetUnfolder]: 2935/4953 cut-off events. [2023-01-28 10:53:46,720 INFO L131 PetriNetUnfolder]: For 8246/8246 co-relation queries the response was YES. [2023-01-28 10:53:46,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18685 conditions, 4953 events. 2935/4953 cut-off events. For 8246/8246 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 30338 event pairs, 178 based on Foata normal form. 62/5011 useless extension candidates. Maximal degree in co-relation 18660. Up to 1611 conditions per place. [2023-01-28 10:53:46,741 INFO L137 encePairwiseOnDemand]: 334/352 looper letters, 368 selfloop transitions, 278 changer transitions 126/772 dead transitions. [2023-01-28 10:53:46,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 772 transitions, 6088 flow [2023-01-28 10:53:46,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-01-28 10:53:46,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2023-01-28 10:53:46,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 6512 transitions. [2023-01-28 10:53:46,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2605633802816901 [2023-01-28 10:53:46,755 INFO L72 ComplementDD]: Start complementDD. Operand 71 states and 6512 transitions. [2023-01-28 10:53:46,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 6512 transitions. [2023-01-28 10:53:46,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:53:46,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 71 states and 6512 transitions. [2023-01-28 10:53:46,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 72 states, 71 states have (on average 91.71830985915493) internal successors, (6512), 71 states have internal predecessors, (6512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:46,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 72 states, 72 states have (on average 352.0) internal successors, (25344), 72 states have internal predecessors, (25344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:46,789 INFO L81 ComplementDD]: Finished complementDD. Result has 72 states, 72 states have (on average 352.0) internal successors, (25344), 72 states have internal predecessors, (25344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:46,789 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 287 flow. Second operand 71 states and 6512 transitions. [2023-01-28 10:53:46,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 772 transitions, 6088 flow [2023-01-28 10:53:46,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 772 transitions, 6050 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-01-28 10:53:46,808 INFO L231 Difference]: Finished difference. Result has 166 places, 343 transitions, 3769 flow [2023-01-28 10:53:46,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=3769, PETRI_PLACES=166, PETRI_TRANSITIONS=343} [2023-01-28 10:53:46,809 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 141 predicate places. [2023-01-28 10:53:46,809 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 343 transitions, 3769 flow [2023-01-28 10:53:46,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 86.12903225806451) internal successors, (2670), 31 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:46,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:53:46,810 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] [2023-01-28 10:53:46,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-28 10:53:47,014 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 10:53:47,014 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:53:47,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:53:47,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1490303590, now seen corresponding path program 2 times [2023-01-28 10:53:47,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:53:47,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899785296] [2023-01-28 10:53:47,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:47,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:53:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:47,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:53:47,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:53:47,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899785296] [2023-01-28 10:53:47,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899785296] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:53:47,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906014126] [2023-01-28 10:53:47,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 10:53:47,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:53:47,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:53:47,785 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 10:53:47,787 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 10:53:47,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 10:53:47,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:53:47,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 36 conjunts are in the unsatisfiable core [2023-01-28 10:53:47,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:53:48,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:53:48,093 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-01-28 10:53:48,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 44 [2023-01-28 10:53:48,100 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 27 treesize of output 15 [2023-01-28 10:53:48,183 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 23 treesize of output 7 [2023-01-28 10:53:48,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:53:48,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:53:48,325 WARN L839 $PredicateComparison]: unable to prove that (and (not (= (mod c_~ok~0 256) 0)) (forall ((v_ArrVal_212 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_212) c_~queue~0.base) (+ (* c_~start~0 4) c_~queue~0.offset)) (+ c_~v_old~0 1)))) is different from false [2023-01-28 10:53:48,406 INFO L321 Elim1Store]: treesize reduction 19, result has 59.6 percent of original size [2023-01-28 10:53:48,406 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 73 treesize of output 68 [2023-01-28 10:53:48,411 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 33 treesize of output 27 [2023-01-28 10:53:48,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:53:48,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906014126] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:53:48,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:53:48,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 28 [2023-01-28 10:53:48,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803433468] [2023-01-28 10:53:48,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:53:48,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-28 10:53:48,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:53:48,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-28 10:53:48,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=664, Unknown=1, NotChecked=54, Total=870 [2023-01-28 10:53:48,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 352 [2023-01-28 10:53:48,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 343 transitions, 3769 flow. Second operand has 30 states, 30 states have (on average 90.2) internal successors, (2706), 30 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:48,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:53:48,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 352 [2023-01-28 10:53:48,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:53:58,526 INFO L130 PetriNetUnfolder]: 5741/9595 cut-off events. [2023-01-28 10:53:58,526 INFO L131 PetriNetUnfolder]: For 231639/231639 co-relation queries the response was YES. [2023-01-28 10:53:58,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78973 conditions, 9595 events. 5741/9595 cut-off events. For 231639/231639 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 64122 event pairs, 338 based on Foata normal form. 40/9635 useless extension candidates. Maximal degree in co-relation 78873. Up to 3291 conditions per place. [2023-01-28 10:53:58,699 INFO L137 encePairwiseOnDemand]: 335/352 looper letters, 548 selfloop transitions, 477 changer transitions 103/1128 dead transitions. [2023-01-28 10:53:58,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 1128 transitions, 16105 flow [2023-01-28 10:53:58,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-01-28 10:53:58,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-01-28 10:53:58,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3375 transitions. [2023-01-28 10:53:58,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2739448051948052 [2023-01-28 10:53:58,708 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3375 transitions. [2023-01-28 10:53:58,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3375 transitions. [2023-01-28 10:53:58,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:53:58,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3375 transitions. [2023-01-28 10:53:58,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 96.42857142857143) internal successors, (3375), 35 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:58,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 352.0) internal successors, (12672), 36 states have internal predecessors, (12672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:58,735 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 352.0) internal successors, (12672), 36 states have internal predecessors, (12672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:58,736 INFO L175 Difference]: Start difference. First operand has 166 places, 343 transitions, 3769 flow. Second operand 35 states and 3375 transitions. [2023-01-28 10:53:58,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 1128 transitions, 16105 flow [2023-01-28 10:53:59,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 1128 transitions, 15095 flow, removed 503 selfloop flow, removed 12 redundant places. [2023-01-28 10:53:59,431 INFO L231 Difference]: Finished difference. Result has 200 places, 741 transitions, 10075 flow [2023-01-28 10:53:59,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=3487, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=10075, PETRI_PLACES=200, PETRI_TRANSITIONS=741} [2023-01-28 10:53:59,431 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 175 predicate places. [2023-01-28 10:53:59,431 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 741 transitions, 10075 flow [2023-01-28 10:53:59,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 90.2) internal successors, (2706), 30 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:53:59,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:53:59,432 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] [2023-01-28 10:53:59,439 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 10:53:59,635 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 10:53:59,635 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:53:59,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:53:59,635 INFO L85 PathProgramCache]: Analyzing trace with hash -2047725600, now seen corresponding path program 3 times [2023-01-28 10:53:59,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:53:59,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356147255] [2023-01-28 10:53:59,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:59,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:53:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:54:00,481 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:54:00,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:54:00,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356147255] [2023-01-28 10:54:00,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356147255] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:54:00,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081863499] [2023-01-28 10:54:00,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 10:54:00,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:54:00,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:54:00,485 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 10:54:00,542 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 10:54:00,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 10:54:00,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:54:00,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 34 conjunts are in the unsatisfiable core [2023-01-28 10:54:00,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:54:00,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:54:00,794 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-01-28 10:54:00,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 44 [2023-01-28 10:54:00,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-01-28 10:54:00,886 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 23 treesize of output 7 [2023-01-28 10:54:00,905 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:54:00,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:54:01,059 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_255 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_255) c_~queue~0.base) (+ (* c_~start~0 4) c_~queue~0.offset)) (+ c_~v_old~0 1))) (not (= (mod c_~ok~0 256) 0))) is different from false [2023-01-28 10:54:01,161 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:54:01,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 135 [2023-01-28 10:54:01,167 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 42 treesize of output 36 [2023-01-28 10:54:01,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 10:54:01,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081863499] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:54:01,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:54:01,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 28 [2023-01-28 10:54:01,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206703695] [2023-01-28 10:54:01,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:54:01,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-28 10:54:01,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:54:01,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-28 10:54:01,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=659, Unknown=1, NotChecked=54, Total=870 [2023-01-28 10:54:01,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 352 [2023-01-28 10:54:01,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 741 transitions, 10075 flow. Second operand has 30 states, 30 states have (on average 90.2) internal successors, (2706), 30 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:54:01,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:54:01,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 352 [2023-01-28 10:54:01,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:54:04,523 INFO L130 PetriNetUnfolder]: 6937/11537 cut-off events. [2023-01-28 10:54:04,524 INFO L131 PetriNetUnfolder]: For 293659/293659 co-relation queries the response was YES. [2023-01-28 10:54:04,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104718 conditions, 11537 events. 6937/11537 cut-off events. For 293659/293659 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 79327 event pairs, 313 based on Foata normal form. 2/11539 useless extension candidates. Maximal degree in co-relation 104608. Up to 3943 conditions per place. [2023-01-28 10:54:04,629 INFO L137 encePairwiseOnDemand]: 339/352 looper letters, 727 selfloop transitions, 399 changer transitions 23/1149 dead transitions. [2023-01-28 10:54:04,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 1149 transitions, 18743 flow [2023-01-28 10:54:04,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-01-28 10:54:04,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-01-28 10:54:04,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1911 transitions. [2023-01-28 10:54:04,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2714488636363636 [2023-01-28 10:54:04,631 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1911 transitions. [2023-01-28 10:54:04,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1911 transitions. [2023-01-28 10:54:04,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:54:04,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1911 transitions. [2023-01-28 10:54:04,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 95.55) internal successors, (1911), 20 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:54:04,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 352.0) internal successors, (7392), 21 states have internal predecessors, (7392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:54:04,639 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 352.0) internal successors, (7392), 21 states have internal predecessors, (7392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:54:04,639 INFO L175 Difference]: Start difference. First operand has 200 places, 741 transitions, 10075 flow. Second operand 20 states and 1911 transitions. [2023-01-28 10:54:04,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 1149 transitions, 18743 flow [2023-01-28 10:54:06,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 1149 transitions, 18022 flow, removed 351 selfloop flow, removed 9 redundant places. [2023-01-28 10:54:06,147 INFO L231 Difference]: Finished difference. Result has 210 places, 869 transitions, 12858 flow [2023-01-28 10:54:06,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=9687, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=12858, PETRI_PLACES=210, PETRI_TRANSITIONS=869} [2023-01-28 10:54:06,148 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 185 predicate places. [2023-01-28 10:54:06,148 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 869 transitions, 12858 flow [2023-01-28 10:54:06,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 90.2) internal successors, (2706), 30 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:54:06,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:54:06,149 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] [2023-01-28 10:54:06,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 10:54:06,353 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 10:54:06,353 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:54:06,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:54:06,354 INFO L85 PathProgramCache]: Analyzing trace with hash 845325723, now seen corresponding path program 1 times [2023-01-28 10:54:06,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:54:06,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239638401] [2023-01-28 10:54:06,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:54:06,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:54:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:54:06,432 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:54:06,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:54:06,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239638401] [2023-01-28 10:54:06,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239638401] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:54:06,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213410200] [2023-01-28 10:54:06,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:54:06,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:54:06,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:54:06,435 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 10:54:06,436 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 10:54:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:54:06,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 10:54:06,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:54:06,572 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:54:06,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:54:06,617 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:54:06,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213410200] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:54:06,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:54:06,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-01-28 10:54:06,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786466261] [2023-01-28 10:54:06,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:54:06,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 10:54:06,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:54:06,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 10:54:06,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-01-28 10:54:06,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 352 [2023-01-28 10:54:06,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 869 transitions, 12858 flow. Second operand has 15 states, 15 states have (on average 130.53333333333333) internal successors, (1958), 15 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:54:06,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:54:06,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 352 [2023-01-28 10:54:06,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:54:09,440 INFO L130 PetriNetUnfolder]: 6863/11723 cut-off events. [2023-01-28 10:54:09,440 INFO L131 PetriNetUnfolder]: For 314463/314463 co-relation queries the response was YES. [2023-01-28 10:54:09,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105240 conditions, 11723 events. 6863/11723 cut-off events. For 314463/314463 co-relation queries the response was YES. Maximal size of possible extension queue 604. Compared 84562 event pairs, 916 based on Foata normal form. 271/11994 useless extension candidates. Maximal degree in co-relation 105130. Up to 5940 conditions per place. [2023-01-28 10:54:09,537 INFO L137 encePairwiseOnDemand]: 344/352 looper letters, 1226 selfloop transitions, 76 changer transitions 22/1324 dead transitions. [2023-01-28 10:54:09,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 1324 transitions, 22049 flow [2023-01-28 10:54:09,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 10:54:09,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 10:54:09,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1214 transitions. [2023-01-28 10:54:09,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3832070707070707 [2023-01-28 10:54:09,539 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1214 transitions. [2023-01-28 10:54:09,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1214 transitions. [2023-01-28 10:54:09,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:54:09,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1214 transitions. [2023-01-28 10:54:09,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 134.88888888888889) internal successors, (1214), 9 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:54:09,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 352.0) internal successors, (3520), 10 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:54:09,543 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 352.0) internal successors, (3520), 10 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:54:09,543 INFO L175 Difference]: Start difference. First operand has 210 places, 869 transitions, 12858 flow. Second operand 9 states and 1214 transitions. [2023-01-28 10:54:09,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 1324 transitions, 22049 flow [2023-01-28 10:54:10,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 1324 transitions, 21916 flow, removed 47 selfloop flow, removed 5 redundant places. [2023-01-28 10:54:10,957 INFO L231 Difference]: Finished difference. Result has 215 places, 852 transitions, 12608 flow [2023-01-28 10:54:10,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=12098, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=833, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=780, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12608, PETRI_PLACES=215, PETRI_TRANSITIONS=852} [2023-01-28 10:54:10,958 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 190 predicate places. [2023-01-28 10:54:10,958 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 852 transitions, 12608 flow [2023-01-28 10:54:10,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 130.53333333333333) internal successors, (1958), 15 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:54:10,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:54:10,958 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:54:10,965 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 10:54:11,162 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 10:54:11,163 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:54:11,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:54:11,163 INFO L85 PathProgramCache]: Analyzing trace with hash 43072444, now seen corresponding path program 4 times [2023-01-28 10:54:11,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:54:11,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417226404] [2023-01-28 10:54:11,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:54:11,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:54:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:54:11,242 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:54:11,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:54:11,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417226404] [2023-01-28 10:54:11,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417226404] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:54:11,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249616747] [2023-01-28 10:54:11,242 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 10:54:11,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:54:11,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:54:11,243 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 10:54:11,250 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 10:54:11,323 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 10:54:11,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:54:11,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 10:54:11,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:54:11,349 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:54:11,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:54:11,411 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:54:11,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249616747] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:54:11,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:54:11,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-01-28 10:54:11,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971602468] [2023-01-28 10:54:11,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:54:11,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 10:54:11,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:54:11,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 10:54:11,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-01-28 10:54:11,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 352 [2023-01-28 10:54:11,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 852 transitions, 12608 flow. Second operand has 9 states, 9 states have (on average 146.55555555555554) internal successors, (1319), 9 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:54:11,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:54:11,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 352 [2023-01-28 10:54:11,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:54:14,459 INFO L130 PetriNetUnfolder]: 7689/13087 cut-off events. [2023-01-28 10:54:14,460 INFO L131 PetriNetUnfolder]: For 342487/342487 co-relation queries the response was YES. [2023-01-28 10:54:14,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120141 conditions, 13087 events. 7689/13087 cut-off events. For 342487/342487 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 94368 event pairs, 713 based on Foata normal form. 78/13165 useless extension candidates. Maximal degree in co-relation 115460. Up to 4579 conditions per place. [2023-01-28 10:54:14,584 INFO L137 encePairwiseOnDemand]: 345/352 looper letters, 594 selfloop transitions, 679 changer transitions 0/1273 dead transitions. [2023-01-28 10:54:14,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 1273 transitions, 21229 flow [2023-01-28 10:54:14,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 10:54:14,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 10:54:14,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1207 transitions. [2023-01-28 10:54:14,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4286221590909091 [2023-01-28 10:54:14,586 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1207 transitions. [2023-01-28 10:54:14,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1207 transitions. [2023-01-28 10:54:14,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:54:14,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1207 transitions. [2023-01-28 10:54:14,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 150.875) internal successors, (1207), 8 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:54:14,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 352.0) internal successors, (3168), 9 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:54:14,593 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 352.0) internal successors, (3168), 9 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:54:14,593 INFO L175 Difference]: Start difference. First operand has 215 places, 852 transitions, 12608 flow. Second operand 8 states and 1207 transitions. [2023-01-28 10:54:14,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 1273 transitions, 21229 flow [2023-01-28 10:54:16,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 1273 transitions, 21172 flow, removed 25 selfloop flow, removed 2 redundant places. [2023-01-28 10:54:16,212 INFO L231 Difference]: Finished difference. Result has 226 places, 1156 transitions, 20531 flow [2023-01-28 10:54:16,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=12565, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=852, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=415, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=20531, PETRI_PLACES=226, PETRI_TRANSITIONS=1156} [2023-01-28 10:54:16,213 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 201 predicate places. [2023-01-28 10:54:16,213 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 1156 transitions, 20531 flow [2023-01-28 10:54:16,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 146.55555555555554) internal successors, (1319), 9 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:54:16,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:54:16,214 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:54:16,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-01-28 10:54:16,418 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 10:54:16,418 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:54:16,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:54:16,418 INFO L85 PathProgramCache]: Analyzing trace with hash 649656378, now seen corresponding path program 5 times [2023-01-28 10:54:16,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:54:16,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948183347] [2023-01-28 10:54:16,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:54:16,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:54:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:54:16,539 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:54:16,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:54:16,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948183347] [2023-01-28 10:54:16,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948183347] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:54:16,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592825223] [2023-01-28 10:54:16,539 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 10:54:16,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:54:16,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:54:16,554 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 10:54:16,555 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 10:54:16,628 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 10:54:16,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:54:16,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 10:54:16,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:54:16,649 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:54:16,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:54:16,720 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:54:16,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592825223] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:54:16,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:54:16,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3, 4] total 9 [2023-01-28 10:54:16,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565799709] [2023-01-28 10:54:16,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:54:16,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 10:54:16,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:54:16,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 10:54:16,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2023-01-28 10:54:16,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 352 [2023-01-28 10:54:16,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 1156 transitions, 20531 flow. Second operand has 10 states, 10 states have (on average 148.1) internal successors, (1481), 10 states have internal predecessors, (1481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:54:16,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:54:16,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 352 [2023-01-28 10:54:16,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:54:20,866 INFO L130 PetriNetUnfolder]: 8400/14665 cut-off events. [2023-01-28 10:54:20,866 INFO L131 PetriNetUnfolder]: For 498830/498830 co-relation queries the response was YES. [2023-01-28 10:54:21,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151085 conditions, 14665 events. 8400/14665 cut-off events. For 498830/498830 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 108625 event pairs, 773 based on Foata normal form. 584/15249 useless extension candidates. Maximal degree in co-relation 145525. Up to 4949 conditions per place. [2023-01-28 10:54:21,074 INFO L137 encePairwiseOnDemand]: 346/352 looper letters, 952 selfloop transitions, 271 changer transitions 263/1486 dead transitions. [2023-01-28 10:54:21,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 1486 transitions, 30041 flow [2023-01-28 10:54:21,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 10:54:21,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 10:54:21,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1079 transitions. [2023-01-28 10:54:21,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43790584415584416 [2023-01-28 10:54:21,076 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1079 transitions. [2023-01-28 10:54:21,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1079 transitions. [2023-01-28 10:54:21,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:54:21,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1079 transitions. [2023-01-28 10:54:21,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 154.14285714285714) internal successors, (1079), 7 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:54:21,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:54:21,079 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:54:21,079 INFO L175 Difference]: Start difference. First operand has 226 places, 1156 transitions, 20531 flow. Second operand 7 states and 1079 transitions. [2023-01-28 10:54:21,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 1486 transitions, 30041 flow [2023-01-28 10:54:24,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 1486 transitions, 28578 flow, removed 702 selfloop flow, removed 9 redundant places. [2023-01-28 10:54:24,555 INFO L231 Difference]: Finished difference. Result has 219 places, 895 transitions, 16566 flow [2023-01-28 10:54:24,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=15081, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=881, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=633, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16566, PETRI_PLACES=219, PETRI_TRANSITIONS=895} [2023-01-28 10:54:24,556 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 194 predicate places. [2023-01-28 10:54:24,556 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 895 transitions, 16566 flow [2023-01-28 10:54:24,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 148.1) internal successors, (1481), 10 states have internal predecessors, (1481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:54:24,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:54:24,556 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:54:24,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 10:54:24,760 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 10:54:24,761 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:54:24,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:54:24,761 INFO L85 PathProgramCache]: Analyzing trace with hash 233657423, now seen corresponding path program 2 times [2023-01-28 10:54:24,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:54:24,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540212066] [2023-01-28 10:54:24,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:54:24,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:54:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:54:24,835 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 10:54:24,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:54:24,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540212066] [2023-01-28 10:54:24,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540212066] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:54:24,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:54:24,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 10:54:24,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93665557] [2023-01-28 10:54:24,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:54:24,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 10:54:24,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:54:24,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 10:54:24,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 10:54:24,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 352 [2023-01-28 10:54:24,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 895 transitions, 16566 flow. Second operand has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:54:24,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:54:24,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 352 [2023-01-28 10:54:24,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:54:28,198 INFO L130 PetriNetUnfolder]: 7064/12351 cut-off events. [2023-01-28 10:54:28,198 INFO L131 PetriNetUnfolder]: For 359307/359307 co-relation queries the response was YES. [2023-01-28 10:54:28,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126792 conditions, 12351 events. 7064/12351 cut-off events. For 359307/359307 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 89522 event pairs, 340 based on Foata normal form. 32/12383 useless extension candidates. Maximal degree in co-relation 123528. Up to 8239 conditions per place. [2023-01-28 10:54:28,335 INFO L137 encePairwiseOnDemand]: 348/352 looper letters, 1029 selfloop transitions, 39 changer transitions 18/1086 dead transitions. [2023-01-28 10:54:28,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 1086 transitions, 22138 flow [2023-01-28 10:54:28,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 10:54:28,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 10:54:28,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 781 transitions. [2023-01-28 10:54:28,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44375 [2023-01-28 10:54:28,353 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 781 transitions. [2023-01-28 10:54:28,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 781 transitions. [2023-01-28 10:54:28,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:54:28,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 781 transitions. [2023-01-28 10:54:28,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 156.2) internal successors, (781), 5 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:54:28,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:54:28,355 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:54:28,355 INFO L175 Difference]: Start difference. First operand has 219 places, 895 transitions, 16566 flow. Second operand 5 states and 781 transitions. [2023-01-28 10:54:28,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 1086 transitions, 22138 flow [2023-01-28 10:54:30,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 1086 transitions, 21743 flow, removed 164 selfloop flow, removed 2 redundant places. [2023-01-28 10:54:30,290 INFO L231 Difference]: Finished difference. Result has 223 places, 903 transitions, 16477 flow [2023-01-28 10:54:30,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=16163, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=891, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=858, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=16477, PETRI_PLACES=223, PETRI_TRANSITIONS=903} [2023-01-28 10:54:30,291 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 198 predicate places. [2023-01-28 10:54:30,291 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 903 transitions, 16477 flow [2023-01-28 10:54:30,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:54:30,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:54:30,291 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:54:30,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 10:54:30,291 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:54:30,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:54:30,292 INFO L85 PathProgramCache]: Analyzing trace with hash -402810445, now seen corresponding path program 3 times [2023-01-28 10:54:30,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:54:30,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309558214] [2023-01-28 10:54:30,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:54:30,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:54:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:54:30,918 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:54:30,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:54:30,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309558214] [2023-01-28 10:54:30,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309558214] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:54:30,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606307360] [2023-01-28 10:54:30,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 10:54:30,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:54:30,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:54:30,920 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 10:54:30,952 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 10:54:31,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 10:54:31,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:54:31,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 50 conjunts are in the unsatisfiable core [2023-01-28 10:54:31,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:54:31,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:54:31,241 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 10:54:31,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:54:31,325 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 10:54:31,490 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 10:54:31,492 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 10:54:31,492 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 30 treesize of output 10 [2023-01-28 10:54:31,514 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:54:31,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:54:31,894 INFO L321 Elim1Store]: treesize reduction 11, result has 92.0 percent of original size [2023-01-28 10:54:31,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1886 treesize of output 1736 [2023-01-28 10:54:31,965 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:54:31,965 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 792 treesize of output 731 [2023-01-28 10:54:31,994 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:54:31,995 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 690 treesize of output 623 [2023-01-28 10:54:32,018 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:54:32,018 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 582 treesize of output 503 [2023-01-28 10:54:38,608 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:54:38,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606307360] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:54:38,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:54:38,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 27 [2023-01-28 10:54:38,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828891881] [2023-01-28 10:54:38,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:54:38,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-28 10:54:38,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:54:38,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-28 10:54:38,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=671, Unknown=5, NotChecked=0, Total=812 [2023-01-28 10:54:38,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 352 [2023-01-28 10:54:38,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 903 transitions, 16477 flow. Second operand has 29 states, 29 states have (on average 82.41379310344827) internal successors, (2390), 29 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:54:38,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:54:38,612 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 352 [2023-01-28 10:54:38,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:54:51,071 INFO L130 PetriNetUnfolder]: 10586/18823 cut-off events. [2023-01-28 10:54:51,071 INFO L131 PetriNetUnfolder]: For 537777/537777 co-relation queries the response was YES. [2023-01-28 10:54:51,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192878 conditions, 18823 events. 10586/18823 cut-off events. For 537777/537777 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 148861 event pairs, 683 based on Foata normal form. 15/18838 useless extension candidates. Maximal degree in co-relation 188579. Up to 5602 conditions per place. [2023-01-28 10:54:51,269 INFO L137 encePairwiseOnDemand]: 334/352 looper letters, 862 selfloop transitions, 969 changer transitions 175/2006 dead transitions. [2023-01-28 10:54:51,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 2006 transitions, 40841 flow [2023-01-28 10:54:51,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-01-28 10:54:51,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2023-01-28 10:54:51,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 6520 transitions. [2023-01-28 10:54:51,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2437200956937799 [2023-01-28 10:54:51,281 INFO L72 ComplementDD]: Start complementDD. Operand 76 states and 6520 transitions. [2023-01-28 10:54:51,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 6520 transitions. [2023-01-28 10:54:51,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:54:51,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 76 states and 6520 transitions. [2023-01-28 10:54:51,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 77 states, 76 states have (on average 85.78947368421052) internal successors, (6520), 76 states have internal predecessors, (6520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:54:51,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 77 states, 77 states have (on average 352.0) internal successors, (27104), 77 states have internal predecessors, (27104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:54:51,306 INFO L81 ComplementDD]: Finished complementDD. Result has 77 states, 77 states have (on average 352.0) internal successors, (27104), 77 states have internal predecessors, (27104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:54:51,306 INFO L175 Difference]: Start difference. First operand has 223 places, 903 transitions, 16477 flow. Second operand 76 states and 6520 transitions. [2023-01-28 10:54:51,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 2006 transitions, 40841 flow [2023-01-28 10:54:54,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 2006 transitions, 40801 flow, removed 20 selfloop flow, removed 0 redundant places. [2023-01-28 10:54:54,525 INFO L231 Difference]: Finished difference. Result has 327 places, 1532 transitions, 32468 flow [2023-01-28 10:54:54,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=16467, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=903, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=433, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=32468, PETRI_PLACES=327, PETRI_TRANSITIONS=1532} [2023-01-28 10:54:54,526 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 302 predicate places. [2023-01-28 10:54:54,526 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 1532 transitions, 32468 flow [2023-01-28 10:54:54,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 82.41379310344827) internal successors, (2390), 29 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:54:54,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:54:54,527 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:54:54,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-28 10:54:54,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-01-28 10:54:54,740 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:54:54,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:54:54,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1226199158, now seen corresponding path program 6 times [2023-01-28 10:54:54,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:54:54,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409526257] [2023-01-28 10:54:54,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:54:54,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:54:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:54:56,016 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:54:56,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:54:56,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409526257] [2023-01-28 10:54:56,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409526257] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:54:56,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092431775] [2023-01-28 10:54:56,017 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 10:54:56,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:54:56,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:54:56,018 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 10:54:56,019 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 10:54:56,192 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 10:54:56,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:54:56,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 43 conjunts are in the unsatisfiable core [2023-01-28 10:54:56,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:54:56,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:54:56,350 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 10:54:56,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:54:56,398 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 10:54:56,549 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2023-01-28 10:54:56,550 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 34 treesize of output 10 [2023-01-28 10:54:56,575 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:54:56,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:55:02,110 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_~end~0 4)) (.cse2 (+ c_~A~0.offset (* c_~i~0 4)))) (and (or (forall ((~queue~0.base Int) (~queue~0.offset Int) (v_ArrVal_486 (Array Int Int))) (not (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_486))) (= (select (select .cse0 ~queue~0.base) (+ .cse1 ~queue~0.offset)) (select (select .cse0 c_~A~0.base) .cse2))))) (not (= (mod c_~ok~0 256) 0))) (forall ((~queue~0.base Int) (~queue~0.offset Int) (v_ArrVal_486 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_486))) (let ((.cse3 (select .cse4 ~queue~0.base))) (or (not (= (select .cse3 (+ .cse1 ~queue~0.offset)) (select (select .cse4 c_~A~0.base) .cse2))) (< (select .cse3 (+ (* c_~start~0 4) ~queue~0.offset)) (+ c_~v_old~0 1)))))))) is different from false [2023-01-28 10:55:02,243 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:55:02,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1454 treesize of output 1390 [2023-01-28 10:55:02,349 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:55:02,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 792 treesize of output 771 [2023-01-28 10:55:02,397 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:55:02,397 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 690 treesize of output 623 [2023-01-28 10:55:02,472 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:55:02,473 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 582 treesize of output 503 [2023-01-28 10:55:34,427 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 1 not checked. [2023-01-28 10:55:34,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092431775] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:55:34,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:55:34,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 8] total 32 [2023-01-28 10:55:34,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376951448] [2023-01-28 10:55:34,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:55:34,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-01-28 10:55:34,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:55:34,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-01-28 10:55:34,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=876, Unknown=2, NotChecked=62, Total=1122 [2023-01-28 10:55:34,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 352 [2023-01-28 10:55:34,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 1532 transitions, 32468 flow. Second operand has 34 states, 34 states have (on average 92.11764705882354) internal successors, (3132), 34 states have internal predecessors, (3132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:55:34,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:55:34,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 352 [2023-01-28 10:55:34,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:55:47,712 INFO L130 PetriNetUnfolder]: 12938/22326 cut-off events. [2023-01-28 10:55:47,713 INFO L131 PetriNetUnfolder]: For 828152/828152 co-relation queries the response was YES. [2023-01-28 10:55:47,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255778 conditions, 22326 events. 12938/22326 cut-off events. For 828152/828152 co-relation queries the response was YES. Maximal size of possible extension queue 790. Compared 172991 event pairs, 1076 based on Foata normal form. 14/22340 useless extension candidates. Maximal degree in co-relation 255333. Up to 8036 conditions per place. [2023-01-28 10:55:48,014 INFO L137 encePairwiseOnDemand]: 338/352 looper letters, 1199 selfloop transitions, 772 changer transitions 63/2034 dead transitions. [2023-01-28 10:55:48,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 2034 transitions, 46947 flow [2023-01-28 10:55:48,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-01-28 10:55:48,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-01-28 10:55:48,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2205 transitions. [2023-01-28 10:55:48,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27235671936758893 [2023-01-28 10:55:48,019 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2205 transitions. [2023-01-28 10:55:48,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2205 transitions. [2023-01-28 10:55:48,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:55:48,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2205 transitions. [2023-01-28 10:55:48,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 95.8695652173913) internal successors, (2205), 23 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:55:48,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 352.0) internal successors, (8448), 24 states have internal predecessors, (8448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:55:48,030 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 352.0) internal successors, (8448), 24 states have internal predecessors, (8448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:55:48,030 INFO L175 Difference]: Start difference. First operand has 327 places, 1532 transitions, 32468 flow. Second operand 23 states and 2205 transitions. [2023-01-28 10:55:48,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 2034 transitions, 46947 flow [2023-01-28 10:55:54,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 2034 transitions, 44523 flow, removed 610 selfloop flow, removed 26 redundant places. [2023-01-28 10:55:54,518 INFO L231 Difference]: Finished difference. Result has 306 places, 1812 transitions, 39352 flow [2023-01-28 10:55:54,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=30598, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=496, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=825, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=39352, PETRI_PLACES=306, PETRI_TRANSITIONS=1812} [2023-01-28 10:55:54,520 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 281 predicate places. [2023-01-28 10:55:54,520 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 1812 transitions, 39352 flow [2023-01-28 10:55:54,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 92.11764705882354) internal successors, (3132), 34 states have internal predecessors, (3132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:55:54,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:55:54,521 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:55:54,525 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 10:55:54,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-28 10:55:54,725 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:55:54,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:55:54,726 INFO L85 PathProgramCache]: Analyzing trace with hash -60053703, now seen corresponding path program 4 times [2023-01-28 10:55:54,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:55:54,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816923002] [2023-01-28 10:55:54,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:55:54,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:55:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:55:54,917 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 10:55:54,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:55:54,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816923002] [2023-01-28 10:55:54,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816923002] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:55:54,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:55:54,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 10:55:54,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434193106] [2023-01-28 10:55:54,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:55:54,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 10:55:54,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:55:54,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 10:55:54,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-01-28 10:55:54,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 352 [2023-01-28 10:55:54,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 1812 transitions, 39352 flow. Second operand has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:55:54,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:55:54,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 352 [2023-01-28 10:55:54,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:56:02,626 INFO L130 PetriNetUnfolder]: 11001/18833 cut-off events. [2023-01-28 10:56:02,626 INFO L131 PetriNetUnfolder]: For 693684/693684 co-relation queries the response was YES. [2023-01-28 10:56:02,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218222 conditions, 18833 events. 11001/18833 cut-off events. For 693684/693684 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 139287 event pairs, 1125 based on Foata normal form. 48/18881 useless extension candidates. Maximal degree in co-relation 218074. Up to 17965 conditions per place. [2023-01-28 10:56:02,905 INFO L137 encePairwiseOnDemand]: 345/352 looper letters, 1494 selfloop transitions, 89 changer transitions 1/1584 dead transitions. [2023-01-28 10:56:02,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 1584 transitions, 37558 flow [2023-01-28 10:56:02,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 10:56:02,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 10:56:02,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 747 transitions. [2023-01-28 10:56:02,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3536931818181818 [2023-01-28 10:56:02,907 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 747 transitions. [2023-01-28 10:56:02,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 747 transitions. [2023-01-28 10:56:02,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:56:02,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 747 transitions. [2023-01-28 10:56:02,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 124.5) internal successors, (747), 6 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 10:56:02,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:56:02,909 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:56:02,909 INFO L175 Difference]: Start difference. First operand has 306 places, 1812 transitions, 39352 flow. Second operand 6 states and 747 transitions. [2023-01-28 10:56:02,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 1584 transitions, 37558 flow [2023-01-28 10:56:06,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 1584 transitions, 37171 flow, removed 92 selfloop flow, removed 15 redundant places. [2023-01-28 10:56:06,854 INFO L231 Difference]: Finished difference. Result has 288 places, 1554 transitions, 33689 flow [2023-01-28 10:56:06,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=33249, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=33689, PETRI_PLACES=288, PETRI_TRANSITIONS=1554} [2023-01-28 10:56:06,855 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 263 predicate places. [2023-01-28 10:56:06,855 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 1554 transitions, 33689 flow [2023-01-28 10:56:06,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:56:06,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:56:06,856 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:56:06,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 10:56:06,856 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:56:06,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:56:06,856 INFO L85 PathProgramCache]: Analyzing trace with hash -505192690, now seen corresponding path program 7 times [2023-01-28 10:56:06,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:56:06,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008869932] [2023-01-28 10:56:06,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:56:06,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:56:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:56:06,932 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 10:56:06,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:56:06,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008869932] [2023-01-28 10:56:06,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008869932] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:56:06,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577569009] [2023-01-28 10:56:06,933 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 10:56:06,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:56:06,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:56:06,934 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 10:56:06,961 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 10:56:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:56:07,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 10:56:07,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:56:07,099 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 10:56:07,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:56:07,162 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 10:56:07,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577569009] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:56:07,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:56:07,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-01-28 10:56:07,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875361961] [2023-01-28 10:56:07,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:56:07,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 10:56:07,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:56:07,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 10:56:07,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-01-28 10:56:07,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 352 [2023-01-28 10:56:07,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 1554 transitions, 33689 flow. Second operand has 12 states, 12 states have (on average 135.0) internal successors, (1620), 12 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:56:07,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:56:07,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 352 [2023-01-28 10:56:07,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:56:12,138 INFO L130 PetriNetUnfolder]: 7667/13309 cut-off events. [2023-01-28 10:56:12,138 INFO L131 PetriNetUnfolder]: For 476643/476643 co-relation queries the response was YES. [2023-01-28 10:56:12,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151323 conditions, 13309 events. 7667/13309 cut-off events. For 476643/476643 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 95053 event pairs, 2629 based on Foata normal form. 174/13483 useless extension candidates. Maximal degree in co-relation 151214. Up to 11801 conditions per place. [2023-01-28 10:56:12,280 INFO L137 encePairwiseOnDemand]: 348/352 looper letters, 840 selfloop transitions, 3 changer transitions 393/1236 dead transitions. [2023-01-28 10:56:12,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 1236 transitions, 29660 flow [2023-01-28 10:56:12,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 10:56:12,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 10:56:12,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 836 transitions. [2023-01-28 10:56:12,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2023-01-28 10:56:12,281 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 836 transitions. [2023-01-28 10:56:12,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 836 transitions. [2023-01-28 10:56:12,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:56:12,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 836 transitions. [2023-01-28 10:56:12,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 139.33333333333334) internal successors, (836), 6 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:56:12,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:56:12,283 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:56:12,283 INFO L175 Difference]: Start difference. First operand has 288 places, 1554 transitions, 33689 flow. Second operand 6 states and 836 transitions. [2023-01-28 10:56:12,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 1236 transitions, 29660 flow [2023-01-28 10:56:14,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 1236 transitions, 29087 flow, removed 142 selfloop flow, removed 5 redundant places. [2023-01-28 10:56:14,401 INFO L231 Difference]: Finished difference. Result has 282 places, 843 transitions, 18302 flow [2023-01-28 10:56:14,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=26033, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=18302, PETRI_PLACES=282, PETRI_TRANSITIONS=843} [2023-01-28 10:56:14,402 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 257 predicate places. [2023-01-28 10:56:14,402 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 843 transitions, 18302 flow [2023-01-28 10:56:14,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 135.0) internal successors, (1620), 12 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:56:14,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:56:14,403 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:56:14,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-01-28 10:56:14,606 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,SelfDestructingSolverStorable16 [2023-01-28 10:56:14,607 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:56:14,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:56:14,607 INFO L85 PathProgramCache]: Analyzing trace with hash -520786314, now seen corresponding path program 8 times [2023-01-28 10:56:14,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:56:14,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723394952] [2023-01-28 10:56:14,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:56:14,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:56:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:56:16,071 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:56:16,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:56:16,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723394952] [2023-01-28 10:56:16,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723394952] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:56:16,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342911406] [2023-01-28 10:56:16,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 10:56:16,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:56:16,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:56:16,073 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:56:16,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-28 10:56:16,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 10:56:16,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:56:16,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 60 conjunts are in the unsatisfiable core [2023-01-28 10:56:16,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:56:16,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:56:16,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 10:56:17,024 INFO L321 Elim1Store]: treesize reduction 37, result has 55.4 percent of original size [2023-01-28 10:56:17,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 61 [2023-01-28 10:56:17,089 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:56:17,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:56:19,195 INFO L321 Elim1Store]: treesize reduction 144, result has 85.6 percent of original size [2023-01-28 10:56:19,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 853 treesize of output 1432 [2023-01-28 10:56:19,330 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:56:19,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 570 treesize of output 672 [2023-01-28 10:56:19,469 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:56:19,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 495 treesize of output 552 [2023-01-28 10:56:19,623 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:56:19,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 427 treesize of output 440 [2023-01-28 10:59:37,888 WARN L222 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 446 DAG size of output: 518 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-28 11:02:11,067 WARN L222 SmtUtils]: Spent 10.17s on a formula simplification. DAG size of input: 667 DAG size of output: 796 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-01-28 11:07:46,636 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 11:07:46,642 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 11:07:46,673 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 11:07:46,673 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 11:07:46,840 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,SelfDestructingSolverStorable17 [2023-01-28 11:07:46,841 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 31 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-3-7-4-7-4-7-3-6-2-3-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-90-6-4-7-4-7-4-7-4-7-4-9-4-7-5-8-4-8-4-6-3-4-2-2-1 context. [2023-01-28 11:07:46,842 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 11:07:46,842 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 11:07:46,843 INFO L445 BasicCegarLoop]: Path program histogram: [8, 4, 2, 1, 1, 1, 1] [2023-01-28 11:07:46,845 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 11:07:46,845 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 11:07:46,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 11:07:46 BasicIcfg [2023-01-28 11:07:46,847 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 11:07:46,849 INFO L158 Benchmark]: Toolchain (without parser) took 856848.66ms. Allocated memory was 333.4MB in the beginning and 7.1GB in the end (delta: 6.8GB). Free memory was 299.7MB in the beginning and 2.5GB in the end (delta: -2.2GB). Peak memory consumption was 6.4GB. Max. memory is 16.0GB. [2023-01-28 11:07:46,850 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 213.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 11:07:46,850 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.82ms. Allocated memory is still 333.4MB. Free memory was 299.4MB in the beginning and 287.9MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 11:07:46,850 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.01ms. Allocated memory is still 333.4MB. Free memory was 287.9MB in the beginning and 285.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 11:07:46,850 INFO L158 Benchmark]: Boogie Preprocessor took 35.28ms. Allocated memory is still 333.4MB. Free memory was 285.5MB in the beginning and 284.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 11:07:46,850 INFO L158 Benchmark]: RCFGBuilder took 500.69ms. Allocated memory is still 333.4MB. Free memory was 284.0MB in the beginning and 258.9MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-01-28 11:07:46,851 INFO L158 Benchmark]: TraceAbstraction took 856057.87ms. Allocated memory was 333.4MB in the beginning and 7.1GB in the end (delta: 6.8GB). Free memory was 258.2MB in the beginning and 2.5GB in the end (delta: -2.2GB). Peak memory consumption was 6.3GB. Max. memory is 16.0GB. [2023-01-28 11:07:46,852 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 213.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 200.82ms. Allocated memory is still 333.4MB. Free memory was 299.4MB in the beginning and 287.9MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 49.01ms. Allocated memory is still 333.4MB. Free memory was 287.9MB in the beginning and 285.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 35.28ms. Allocated memory is still 333.4MB. Free memory was 285.5MB in the beginning and 284.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 500.69ms. Allocated memory is still 333.4MB. Free memory was 284.0MB in the beginning and 258.9MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 856057.87ms. Allocated memory was 333.4MB in the beginning and 7.1GB in the end (delta: 6.8GB). Free memory was 258.2MB in the beginning and 2.5GB in the end (delta: -2.2GB). Peak memory consumption was 6.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.0s, 160 PlacesBefore, 25 PlacesAfterwards, 168 TransitionsBefore, 23 TransitionsAfterwards, 690 CoEnabledTransitionPairs, 7 FixpointIterations, 111 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 30 TrivialYvCompositions, 5 ConcurrentYvCompositions, 10 ChoiceCompositions, 174 TotalNumberOfCompositions, 1199 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 924, independent: 858, independent conditional: 0, independent unconditional: 858, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 386, independent: 376, independent conditional: 0, independent unconditional: 376, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 924, independent: 482, independent conditional: 0, independent unconditional: 482, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 386, unknown conditional: 0, unknown unconditional: 386] , Statistics on independence cache: Total cache size (in pairs): 46, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 31 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-3-7-4-7-4-7-3-6-2-3-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-90-6-4-7-4-7-4-7-4-7-4-9-4-7-5-8-4-8-4-6-3-4-2-2-1 context. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 31 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-3-7-4-7-4-7-3-6-2-3-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-90-6-4-7-4-7-4-7-4-7-4-9-4-7-5-8-4-8-4-6-3-4-2-2-1 context. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 31 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-3-7-4-7-4-7-3-6-2-3-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-90-6-4-7-4-7-4-7-4-7-4-9-4-7-5-8-4-8-4-6-3-4-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 188 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 856.0s, OverallIterations: 18, TraceHistogramMax: 4, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 100.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 19 mSolverCounterUnknown, 2622 SdHoareTripleChecker+Valid, 5.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2622 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 4.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1480 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 387 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7664 IncrementalHoareTripleChecker+Invalid, 9550 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 387 mSolverCounterUnsat, 5 mSDtfsCounter, 7664 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 788 GetRequests, 363 SyntacticMatches, 15 SemanticMatches, 410 ConstructedPredicates, 6 IntricatePredicates, 2 DeprecatedPredicates, 6921 ImplicationChecksByTransitivity, 32.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39352occurred in iteration=15, InterpolantAutomatonStates: 291, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 54.7s InterpolantComputationTime, 626 NumberOfCodeBlocks, 626 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 821 ConstructedInterpolants, 43 QuantifiedInterpolants, 9941 SizeOfPredicates, 135 NumberOfNonLiveVariables, 2809 ConjunctsInSsa, 256 ConjunctsInUnsatCore, 38 InterpolantComputations, 8 PerfectInterpolantSequences, 157/256 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown