/usr/bin/java -Xmx8000000000 -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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-inc-subseq.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-0612a5f-m [2022-09-20 21:17:07,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 21:17:07,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 21:17:07,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 21:17:07,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 21:17:07,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 21:17:07,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 21:17:07,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 21:17:07,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 21:17:07,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 21:17:07,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 21:17:07,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 21:17:07,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 21:17:07,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 21:17:07,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 21:17:07,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 21:17:07,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 21:17:07,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 21:17:07,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 21:17:07,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 21:17:07,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 21:17:07,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 21:17:07,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 21:17:07,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 21:17:07,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 21:17:07,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 21:17:07,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 21:17:07,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 21:17:07,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 21:17:07,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 21:17:07,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 21:17:07,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 21:17:07,657 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 21:17:07,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 21:17:07,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 21:17:07,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 21:17:07,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 21:17:07,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 21:17:07,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 21:17:07,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 21:17:07,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 21:17:07,662 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-NoLbe.epf [2022-09-20 21:17:07,691 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 21:17:07,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 21:17:07,692 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 21:17:07,693 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 21:17:07,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 21:17:07,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 21:17:07,693 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 21:17:07,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 21:17:07,694 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 21:17:07,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 21:17:07,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 21:17:07,695 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 21:17:07,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 21:17:07,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 21:17:07,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 21:17:07,695 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 21:17:07,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 21:17:07,696 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 21:17:07,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 21:17:07,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 21:17:07,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 21:17:07,696 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 21:17:07,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 21:17:07,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 21:17:07,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 21:17:07,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 21:17:07,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 21:17:07,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 21:17:07,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 21:17:07,697 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 21:17:07,698 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 21:17:07,699 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 21:17:07,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 21:17:07,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 21:17:07,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 21:17:07,950 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 21:17:07,950 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 21:17:07,951 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-inc-subseq.wvr.c [2022-09-20 21:17:08,005 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9d83d040/2f748cd018b748858e1ce53281017d39/FLAGb80957516 [2022-09-20 21:17:08,359 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 21:17:08,360 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-inc-subseq.wvr.c [2022-09-20 21:17:08,369 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9d83d040/2f748cd018b748858e1ce53281017d39/FLAGb80957516 [2022-09-20 21:17:08,387 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9d83d040/2f748cd018b748858e1ce53281017d39 [2022-09-20 21:17:08,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 21:17:08,391 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 21:17:08,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 21:17:08,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 21:17:08,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 21:17:08,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 09:17:08" (1/1) ... [2022-09-20 21:17:08,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54be98e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:17:08, skipping insertion in model container [2022-09-20 21:17:08,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 09:17:08" (1/1) ... [2022-09-20 21:17:08,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 21:17:08,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 21:17:08,665 WARN L230 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-inc-subseq.wvr.c[2924,2937] [2022-09-20 21:17:08,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 21:17:08,689 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 21:17:08,722 WARN L230 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-inc-subseq.wvr.c[2924,2937] [2022-09-20 21:17:08,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 21:17:08,736 INFO L208 MainTranslator]: Completed translation [2022-09-20 21:17:08,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:17:08 WrapperNode [2022-09-20 21:17:08,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 21:17:08,739 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 21:17:08,739 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 21:17:08,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 21:17:08,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:17:08" (1/1) ... [2022-09-20 21:17:08,762 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:17:08" (1/1) ... [2022-09-20 21:17:08,795 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 191 [2022-09-20 21:17:08,795 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 21:17:08,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 21:17:08,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 21:17:08,797 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 21:17:08,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:17:08" (1/1) ... [2022-09-20 21:17:08,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:17:08" (1/1) ... [2022-09-20 21:17:08,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:17:08" (1/1) ... [2022-09-20 21:17:08,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:17:08" (1/1) ... [2022-09-20 21:17:08,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:17:08" (1/1) ... [2022-09-20 21:17:08,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:17:08" (1/1) ... [2022-09-20 21:17:08,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:17:08" (1/1) ... [2022-09-20 21:17:08,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 21:17:08,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 21:17:08,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 21:17:08,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 21:17:08,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:17:08" (1/1) ... [2022-09-20 21:17:08,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 21:17:08,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:17:08,873 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) [2022-09-20 21:17:08,879 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 [2022-09-20 21:17:08,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 21:17:08,909 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 21:17:08,909 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 21:17:08,909 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 21:17:08,909 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 21:17:08,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 21:17:08,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 21:17:08,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 21:17:08,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-20 21:17:08,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-20 21:17:08,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-20 21:17:08,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 21:17:08,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 21:17:08,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 21:17:08,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 21:17:08,915 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 21:17:09,047 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 21:17:09,048 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 21:17:09,419 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 21:17:09,482 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 21:17:09,483 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-20 21:17:09,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 09:17:09 BoogieIcfgContainer [2022-09-20 21:17:09,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 21:17:09,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 21:17:09,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 21:17:09,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 21:17:09,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 09:17:08" (1/3) ... [2022-09-20 21:17:09,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ab28f53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 09:17:09, skipping insertion in model container [2022-09-20 21:17:09,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:17:08" (2/3) ... [2022-09-20 21:17:09,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ab28f53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 09:17:09, skipping insertion in model container [2022-09-20 21:17:09,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 09:17:09" (3/3) ... [2022-09-20 21:17:09,492 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-inc-subseq.wvr.c [2022-09-20 21:17:09,510 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 21:17:09,511 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 21:17:09,511 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 21:17:09,590 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-20 21:17:09,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 189 transitions, 394 flow [2022-09-20 21:17:09,725 INFO L130 PetriNetUnfolder]: 15/187 cut-off events. [2022-09-20 21:17:09,725 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-20 21:17:09,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 187 events. 15/187 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 102 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 152. Up to 2 conditions per place. [2022-09-20 21:17:09,728 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 189 transitions, 394 flow [2022-09-20 21:17:09,735 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 178 transitions, 368 flow [2022-09-20 21:17:09,748 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 21:17:09,756 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;@ab2f41c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 21:17:09,756 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-09-20 21:17:09,807 INFO L130 PetriNetUnfolder]: 15/177 cut-off events. [2022-09-20 21:17:09,808 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-20 21:17:09,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:17:09,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:17:09,809 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:17:09,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:17:09,814 INFO L85 PathProgramCache]: Analyzing trace with hash -2100990696, now seen corresponding path program 1 times [2022-09-20 21:17:09,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:17:09,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559617559] [2022-09-20 21:17:09,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:17:09,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:17:09,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:17:10,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:17:10,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:17:10,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559617559] [2022-09-20 21:17:10,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559617559] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:17:10,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:17:10,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 21:17:10,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562193332] [2022-09-20 21:17:10,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:17:10,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-20 21:17:10,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:17:10,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-20 21:17:10,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-20 21:17:10,122 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 189 [2022-09-20 21:17:10,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 178 transitions, 368 flow. Second operand has 2 states, 2 states have (on average 173.5) internal successors, (347), 2 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:10,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:17:10,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 189 [2022-09-20 21:17:10,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:17:10,184 INFO L130 PetriNetUnfolder]: 14/193 cut-off events. [2022-09-20 21:17:10,184 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-09-20 21:17:10,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 193 events. 14/193 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 174 event pairs, 3 based on Foata normal form. 15/194 useless extension candidates. Maximal degree in co-relation 147. Up to 20 conditions per place. [2022-09-20 21:17:10,188 INFO L137 encePairwiseOnDemand]: 179/189 looper letters, 7 selfloop transitions, 0 changer transitions 6/168 dead transitions. [2022-09-20 21:17:10,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 168 transitions, 362 flow [2022-09-20 21:17:10,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-20 21:17:10,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-09-20 21:17:10,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 359 transitions. [2022-09-20 21:17:10,200 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9497354497354498 [2022-09-20 21:17:10,200 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 359 transitions. [2022-09-20 21:17:10,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 359 transitions. [2022-09-20 21:17:10,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:17:10,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 359 transitions. [2022-09-20 21:17:10,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 179.5) internal successors, (359), 2 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:10,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:10,233 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:10,234 INFO L175 Difference]: Start difference. First operand has 170 places, 178 transitions, 368 flow. Second operand 2 states and 359 transitions. [2022-09-20 21:17:10,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 168 transitions, 362 flow [2022-09-20 21:17:10,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 168 transitions, 354 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 21:17:10,242 INFO L231 Difference]: Finished difference. Result has 167 places, 162 transitions, 328 flow [2022-09-20 21:17:10,244 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=328, PETRI_PLACES=167, PETRI_TRANSITIONS=162} [2022-09-20 21:17:10,248 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, -3 predicate places. [2022-09-20 21:17:10,248 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 162 transitions, 328 flow [2022-09-20 21:17:10,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 173.5) internal successors, (347), 2 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:10,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:17:10,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:17:10,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 21:17:10,250 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:17:10,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:17:10,251 INFO L85 PathProgramCache]: Analyzing trace with hash 962025419, now seen corresponding path program 1 times [2022-09-20 21:17:10,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:17:10,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817659726] [2022-09-20 21:17:10,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:17:10,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:17:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:17:10,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:17:10,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:17:10,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817659726] [2022-09-20 21:17:10,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817659726] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:17:10,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:17:10,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 21:17:10,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572168448] [2022-09-20 21:17:10,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:17:10,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 21:17:10,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:17:10,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 21:17:10,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-20 21:17:10,577 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 189 [2022-09-20 21:17:10,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 162 transitions, 328 flow. Second operand has 6 states, 6 states have (on average 136.66666666666666) internal successors, (820), 6 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:10,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:17:10,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 189 [2022-09-20 21:17:10,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:17:10,762 INFO L130 PetriNetUnfolder]: 56/309 cut-off events. [2022-09-20 21:17:10,765 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-09-20 21:17:10,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 448 conditions, 309 events. 56/309 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 871 event pairs, 12 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 445. Up to 64 conditions per place. [2022-09-20 21:17:10,773 INFO L137 encePairwiseOnDemand]: 183/189 looper letters, 45 selfloop transitions, 5 changer transitions 0/171 dead transitions. [2022-09-20 21:17:10,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 171 transitions, 447 flow [2022-09-20 21:17:10,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-20 21:17:10,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-20 21:17:10,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 837 transitions. [2022-09-20 21:17:10,779 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7380952380952381 [2022-09-20 21:17:10,780 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 837 transitions. [2022-09-20 21:17:10,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 837 transitions. [2022-09-20 21:17:10,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:17:10,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 837 transitions. [2022-09-20 21:17:10,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 139.5) internal successors, (837), 6 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:10,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:10,787 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:10,787 INFO L175 Difference]: Start difference. First operand has 167 places, 162 transitions, 328 flow. Second operand 6 states and 837 transitions. [2022-09-20 21:17:10,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 171 transitions, 447 flow [2022-09-20 21:17:10,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 171 transitions, 447 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 21:17:10,793 INFO L231 Difference]: Finished difference. Result has 167 places, 163 transitions, 346 flow [2022-09-20 21:17:10,794 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=346, PETRI_PLACES=167, PETRI_TRANSITIONS=163} [2022-09-20 21:17:10,794 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, -3 predicate places. [2022-09-20 21:17:10,794 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 163 transitions, 346 flow [2022-09-20 21:17:10,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.66666666666666) internal successors, (820), 6 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:10,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:17:10,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:17:10,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 21:17:10,796 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:17:10,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:17:10,797 INFO L85 PathProgramCache]: Analyzing trace with hash 351270765, now seen corresponding path program 1 times [2022-09-20 21:17:10,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:17:10,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840357077] [2022-09-20 21:17:10,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:17:10,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:17:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:17:10,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:17:10,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:17:10,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840357077] [2022-09-20 21:17:10,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840357077] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:17:10,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:17:10,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 21:17:10,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616434218] [2022-09-20 21:17:10,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:17:10,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 21:17:10,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:17:10,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 21:17:10,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-09-20 21:17:10,984 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 189 [2022-09-20 21:17:10,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 163 transitions, 346 flow. Second operand has 7 states, 7 states have (on average 141.14285714285714) internal successors, (988), 7 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:10,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:17:10,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 189 [2022-09-20 21:17:10,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:17:11,134 INFO L130 PetriNetUnfolder]: 57/353 cut-off events. [2022-09-20 21:17:11,134 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-09-20 21:17:11,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 353 events. 57/353 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 978 event pairs, 12 based on Foata normal form. 4/338 useless extension candidates. Maximal degree in co-relation 525. Up to 60 conditions per place. [2022-09-20 21:17:11,136 INFO L137 encePairwiseOnDemand]: 179/189 looper letters, 46 selfloop transitions, 8 changer transitions 7/182 dead transitions. [2022-09-20 21:17:11,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 182 transitions, 511 flow [2022-09-20 21:17:11,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 21:17:11,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 21:17:11,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1158 transitions. [2022-09-20 21:17:11,139 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7658730158730159 [2022-09-20 21:17:11,139 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1158 transitions. [2022-09-20 21:17:11,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1158 transitions. [2022-09-20 21:17:11,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:17:11,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1158 transitions. [2022-09-20 21:17:11,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 144.75) internal successors, (1158), 8 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:11,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 189.0) internal successors, (1701), 9 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:11,147 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 189.0) internal successors, (1701), 9 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:11,147 INFO L175 Difference]: Start difference. First operand has 167 places, 163 transitions, 346 flow. Second operand 8 states and 1158 transitions. [2022-09-20 21:17:11,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 182 transitions, 511 flow [2022-09-20 21:17:11,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 182 transitions, 501 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 21:17:11,151 INFO L231 Difference]: Finished difference. Result has 172 places, 164 transitions, 364 flow [2022-09-20 21:17:11,151 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=364, PETRI_PLACES=172, PETRI_TRANSITIONS=164} [2022-09-20 21:17:11,152 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, 2 predicate places. [2022-09-20 21:17:11,152 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 164 transitions, 364 flow [2022-09-20 21:17:11,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 141.14285714285714) internal successors, (988), 7 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:11,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:17:11,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:17:11,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 21:17:11,154 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:17:11,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:17:11,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1549323716, now seen corresponding path program 1 times [2022-09-20 21:17:11,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:17:11,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573228154] [2022-09-20 21:17:11,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:17:11,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:17:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:17:11,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:17:11,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:17:11,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573228154] [2022-09-20 21:17:11,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573228154] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:17:11,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:17:11,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-20 21:17:11,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364120913] [2022-09-20 21:17:11,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:17:11,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-20 21:17:11,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:17:11,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-20 21:17:11,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-20 21:17:11,234 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 189 [2022-09-20 21:17:11,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 164 transitions, 364 flow. Second operand has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:11,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:17:11,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 189 [2022-09-20 21:17:11,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:17:11,390 INFO L130 PetriNetUnfolder]: 156/581 cut-off events. [2022-09-20 21:17:11,390 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2022-09-20 21:17:11,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 966 conditions, 581 events. 156/581 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2604 event pairs, 14 based on Foata normal form. 0/541 useless extension candidates. Maximal degree in co-relation 959. Up to 141 conditions per place. [2022-09-20 21:17:11,395 INFO L137 encePairwiseOnDemand]: 183/189 looper letters, 44 selfloop transitions, 11 changer transitions 0/194 dead transitions. [2022-09-20 21:17:11,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 194 transitions, 558 flow [2022-09-20 21:17:11,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 21:17:11,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 21:17:11,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 823 transitions. [2022-09-20 21:17:11,397 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.870899470899471 [2022-09-20 21:17:11,397 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 823 transitions. [2022-09-20 21:17:11,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 823 transitions. [2022-09-20 21:17:11,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:17:11,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 823 transitions. [2022-09-20 21:17:11,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 164.6) internal successors, (823), 5 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:11,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:11,403 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:11,403 INFO L175 Difference]: Start difference. First operand has 172 places, 164 transitions, 364 flow. Second operand 5 states and 823 transitions. [2022-09-20 21:17:11,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 194 transitions, 558 flow [2022-09-20 21:17:11,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 194 transitions, 534 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-09-20 21:17:11,408 INFO L231 Difference]: Finished difference. Result has 172 places, 174 transitions, 437 flow [2022-09-20 21:17:11,408 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=437, PETRI_PLACES=172, PETRI_TRANSITIONS=174} [2022-09-20 21:17:11,410 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, 2 predicate places. [2022-09-20 21:17:11,410 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 174 transitions, 437 flow [2022-09-20 21:17:11,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:11,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:17:11,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:17:11,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 21:17:11,416 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:17:11,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:17:11,417 INFO L85 PathProgramCache]: Analyzing trace with hash -118877064, now seen corresponding path program 2 times [2022-09-20 21:17:11,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:17:11,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593833846] [2022-09-20 21:17:11,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:17:11,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:17:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:17:11,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:17:11,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:17:11,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593833846] [2022-09-20 21:17:11,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593833846] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:17:11,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:17:11,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 21:17:11,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473166916] [2022-09-20 21:17:11,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:17:11,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 21:17:11,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:17:11,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 21:17:11,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-20 21:17:11,575 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 189 [2022-09-20 21:17:11,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 174 transitions, 437 flow. Second operand has 5 states, 5 states have (on average 144.2) internal successors, (721), 5 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:11,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:17:11,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 189 [2022-09-20 21:17:11,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:17:11,684 INFO L130 PetriNetUnfolder]: 106/528 cut-off events. [2022-09-20 21:17:11,685 INFO L131 PetriNetUnfolder]: For 308/325 co-relation queries the response was YES. [2022-09-20 21:17:11,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 994 conditions, 528 events. 106/528 cut-off events. For 308/325 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2383 event pairs, 11 based on Foata normal form. 8/517 useless extension candidates. Maximal degree in co-relation 985. Up to 100 conditions per place. [2022-09-20 21:17:11,688 INFO L137 encePairwiseOnDemand]: 184/189 looper letters, 51 selfloop transitions, 2 changer transitions 4/190 dead transitions. [2022-09-20 21:17:11,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 190 transitions, 630 flow [2022-09-20 21:17:11,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 21:17:11,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 21:17:11,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 734 transitions. [2022-09-20 21:17:11,690 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7767195767195767 [2022-09-20 21:17:11,690 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 734 transitions. [2022-09-20 21:17:11,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 734 transitions. [2022-09-20 21:17:11,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:17:11,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 734 transitions. [2022-09-20 21:17:11,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.8) internal successors, (734), 5 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:11,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:11,694 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:11,694 INFO L175 Difference]: Start difference. First operand has 172 places, 174 transitions, 437 flow. Second operand 5 states and 734 transitions. [2022-09-20 21:17:11,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 190 transitions, 630 flow [2022-09-20 21:17:11,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 190 transitions, 630 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 21:17:11,699 INFO L231 Difference]: Finished difference. Result has 179 places, 175 transitions, 453 flow [2022-09-20 21:17:11,700 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=453, PETRI_PLACES=179, PETRI_TRANSITIONS=175} [2022-09-20 21:17:11,700 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, 9 predicate places. [2022-09-20 21:17:11,700 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 175 transitions, 453 flow [2022-09-20 21:17:11,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 144.2) internal successors, (721), 5 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:11,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:17:11,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:17:11,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 21:17:11,701 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:17:11,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:17:11,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1098415054, now seen corresponding path program 1 times [2022-09-20 21:17:11,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:17:11,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413526455] [2022-09-20 21:17:11,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:17:11,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:17:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:17:11,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:17:11,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:17:11,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413526455] [2022-09-20 21:17:11,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413526455] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:17:11,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:17:11,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 21:17:11,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198641887] [2022-09-20 21:17:11,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:17:11,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 21:17:11,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:17:11,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 21:17:11,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 21:17:11,769 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 189 [2022-09-20 21:17:11,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 175 transitions, 453 flow. Second operand has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:11,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:17:11,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 189 [2022-09-20 21:17:11,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:17:11,847 INFO L130 PetriNetUnfolder]: 79/489 cut-off events. [2022-09-20 21:17:11,847 INFO L131 PetriNetUnfolder]: For 304/330 co-relation queries the response was YES. [2022-09-20 21:17:11,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 898 conditions, 489 events. 79/489 cut-off events. For 304/330 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1954 event pairs, 11 based on Foata normal form. 11/480 useless extension candidates. Maximal degree in co-relation 885. Up to 107 conditions per place. [2022-09-20 21:17:11,851 INFO L137 encePairwiseOnDemand]: 186/189 looper letters, 29 selfloop transitions, 2 changer transitions 2/185 dead transitions. [2022-09-20 21:17:11,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 185 transitions, 570 flow [2022-09-20 21:17:11,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 21:17:11,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 21:17:11,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2022-09-20 21:17:11,853 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.908289241622575 [2022-09-20 21:17:11,853 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2022-09-20 21:17:11,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2022-09-20 21:17:11,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:17:11,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2022-09-20 21:17:11,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:11,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:11,856 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:11,856 INFO L175 Difference]: Start difference. First operand has 179 places, 175 transitions, 453 flow. Second operand 3 states and 515 transitions. [2022-09-20 21:17:11,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 185 transitions, 570 flow [2022-09-20 21:17:11,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 185 transitions, 564 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-09-20 21:17:11,863 INFO L231 Difference]: Finished difference. Result has 177 places, 176 transitions, 463 flow [2022-09-20 21:17:11,863 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=463, PETRI_PLACES=177, PETRI_TRANSITIONS=176} [2022-09-20 21:17:11,865 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, 7 predicate places. [2022-09-20 21:17:11,865 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 176 transitions, 463 flow [2022-09-20 21:17:11,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:11,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:17:11,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:17:11,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 21:17:11,866 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:17:11,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:17:11,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1258713411, now seen corresponding path program 1 times [2022-09-20 21:17:11,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:17:11,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590424825] [2022-09-20 21:17:11,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:17:11,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:17:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:17:11,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:17:11,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:17:11,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590424825] [2022-09-20 21:17:11,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590424825] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:17:11,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:17:11,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 21:17:11,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236329881] [2022-09-20 21:17:11,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:17:11,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 21:17:11,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:17:11,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 21:17:11,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-20 21:17:11,962 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 189 [2022-09-20 21:17:11,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 176 transitions, 463 flow. Second operand has 6 states, 6 states have (on average 149.83333333333334) internal successors, (899), 6 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:11,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:17:11,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 189 [2022-09-20 21:17:11,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:17:12,178 INFO L130 PetriNetUnfolder]: 75/618 cut-off events. [2022-09-20 21:17:12,178 INFO L131 PetriNetUnfolder]: For 358/391 co-relation queries the response was YES. [2022-09-20 21:17:12,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1127 conditions, 618 events. 75/618 cut-off events. For 358/391 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2582 event pairs, 15 based on Foata normal form. 14/605 useless extension candidates. Maximal degree in co-relation 1115. Up to 108 conditions per place. [2022-09-20 21:17:12,182 INFO L137 encePairwiseOnDemand]: 179/189 looper letters, 38 selfloop transitions, 8 changer transitions 22/202 dead transitions. [2022-09-20 21:17:12,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 202 transitions, 685 flow [2022-09-20 21:17:12,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 21:17:12,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 21:17:12,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1361 transitions. [2022-09-20 21:17:12,186 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8001175778953556 [2022-09-20 21:17:12,186 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1361 transitions. [2022-09-20 21:17:12,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1361 transitions. [2022-09-20 21:17:12,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:17:12,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1361 transitions. [2022-09-20 21:17:12,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 151.22222222222223) internal successors, (1361), 9 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:12,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 189.0) internal successors, (1890), 10 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:12,194 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 189.0) internal successors, (1890), 10 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:12,194 INFO L175 Difference]: Start difference. First operand has 177 places, 176 transitions, 463 flow. Second operand 9 states and 1361 transitions. [2022-09-20 21:17:12,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 202 transitions, 685 flow [2022-09-20 21:17:12,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 202 transitions, 683 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 21:17:12,200 INFO L231 Difference]: Finished difference. Result has 186 places, 177 transitions, 489 flow [2022-09-20 21:17:12,201 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=489, PETRI_PLACES=186, PETRI_TRANSITIONS=177} [2022-09-20 21:17:12,201 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, 16 predicate places. [2022-09-20 21:17:12,201 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 177 transitions, 489 flow [2022-09-20 21:17:12,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 149.83333333333334) internal successors, (899), 6 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:12,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:17:12,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:17:12,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 21:17:12,202 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:17:12,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:17:12,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1350127082, now seen corresponding path program 1 times [2022-09-20 21:17:12,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:17:12,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799884209] [2022-09-20 21:17:12,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:17:12,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:17:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:17:13,441 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:17:13,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:17:13,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799884209] [2022-09-20 21:17:13,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799884209] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:17:13,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853226726] [2022-09-20 21:17:13,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:17:13,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:17:13,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:17:13,451 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) [2022-09-20 21:17:13,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-20 21:17:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:17:13,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 42 conjunts are in the unsatisfiable core [2022-09-20 21:17:13,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:17:15,585 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-09-20 21:17:15,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:17:15,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:17:16,114 INFO L356 Elim1Store]: treesize reduction 23, result has 77.2 percent of original size [2022-09-20 21:17:16,114 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 74 treesize of output 103 [2022-09-20 21:17:17,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:17:17,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853226726] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:17:17,493 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:17:17,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 20] total 60 [2022-09-20 21:17:17,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226318041] [2022-09-20 21:17:17,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:17:17,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-09-20 21:17:17,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:17:17,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-09-20 21:17:17,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=514, Invalid=3026, Unknown=0, NotChecked=0, Total=3540 [2022-09-20 21:17:17,503 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 189 [2022-09-20 21:17:17,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 177 transitions, 489 flow. Second operand has 60 states, 60 states have (on average 69.58333333333333) internal successors, (4175), 60 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:17,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:17:17,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 189 [2022-09-20 21:17:17,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:17:22,506 INFO L130 PetriNetUnfolder]: 2910/5830 cut-off events. [2022-09-20 21:17:22,506 INFO L131 PetriNetUnfolder]: For 3271/3271 co-relation queries the response was YES. [2022-09-20 21:17:22,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14474 conditions, 5830 events. 2910/5830 cut-off events. For 3271/3271 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 44562 event pairs, 554 based on Foata normal form. 2/5519 useless extension candidates. Maximal degree in co-relation 14460. Up to 2641 conditions per place. [2022-09-20 21:17:22,547 INFO L137 encePairwiseOnDemand]: 144/189 looper letters, 300 selfloop transitions, 145 changer transitions 74/574 dead transitions. [2022-09-20 21:17:22,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 574 transitions, 2861 flow [2022-09-20 21:17:22,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-09-20 21:17:22,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2022-09-20 21:17:22,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 4821 transitions. [2022-09-20 21:17:22,561 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.3807154702677091 [2022-09-20 21:17:22,561 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 4821 transitions. [2022-09-20 21:17:22,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 4821 transitions. [2022-09-20 21:17:22,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:17:22,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 4821 transitions. [2022-09-20 21:17:22,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 71.95522388059702) internal successors, (4821), 67 states have internal predecessors, (4821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:22,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 189.0) internal successors, (12852), 68 states have internal predecessors, (12852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:22,595 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 189.0) internal successors, (12852), 68 states have internal predecessors, (12852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:22,595 INFO L175 Difference]: Start difference. First operand has 186 places, 177 transitions, 489 flow. Second operand 67 states and 4821 transitions. [2022-09-20 21:17:22,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 574 transitions, 2861 flow [2022-09-20 21:17:22,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 574 transitions, 2829 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-09-20 21:17:22,618 INFO L231 Difference]: Finished difference. Result has 277 places, 309 transitions, 1449 flow [2022-09-20 21:17:22,618 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=1449, PETRI_PLACES=277, PETRI_TRANSITIONS=309} [2022-09-20 21:17:22,621 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, 107 predicate places. [2022-09-20 21:17:22,621 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 309 transitions, 1449 flow [2022-09-20 21:17:22,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 69.58333333333333) internal successors, (4175), 60 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:22,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:17:22,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:17:22,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-09-20 21:17:22,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:17:22,840 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:17:22,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:17:22,840 INFO L85 PathProgramCache]: Analyzing trace with hash 777439628, now seen corresponding path program 2 times [2022-09-20 21:17:22,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:17:22,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504040937] [2022-09-20 21:17:22,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:17:22,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:17:22,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:17:23,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:17:23,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:17:23,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504040937] [2022-09-20 21:17:23,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504040937] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:17:23,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089967352] [2022-09-20 21:17:23,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-20 21:17:23,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:17:23,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:17:23,594 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) [2022-09-20 21:17:23,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-20 21:17:23,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-20 21:17:23,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 21:17:23,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 73 conjunts are in the unsatisfiable core [2022-09-20 21:17:23,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:17:23,726 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:17:23,749 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-09-20 21:17:23,751 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-09-20 21:17:24,048 INFO L356 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-09-20 21:17:24,048 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-09-20 21:17:24,249 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-20 21:17:24,957 INFO L356 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-09-20 21:17:24,957 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 25 [2022-09-20 21:17:25,115 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:17:25,404 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:17:25,495 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:17:26,001 INFO L356 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-09-20 21:17:26,001 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 44 treesize of output 10 [2022-09-20 21:17:26,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:17:26,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:17:35,248 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 58 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-09-20 21:17:44,608 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 21:17:44,609 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 90 [2022-09-20 21:17:44,670 INFO L356 Elim1Store]: treesize reduction 13, result has 76.4 percent of original size [2022-09-20 21:17:44,671 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 55276 treesize of output 51221 [2022-09-20 21:17:44,918 INFO L173 IndexEqualityManager]: detected equality via solver [2022-09-20 21:17:44,938 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 21:17:44,939 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 51180 treesize of output 38924 [2022-09-20 21:17:45,103 INFO L173 IndexEqualityManager]: detected equality via solver [2022-09-20 21:17:45,121 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 21:17:45,122 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 38892 treesize of output 35852 [2022-09-20 21:17:45,312 INFO L173 IndexEqualityManager]: detected equality via solver [2022-09-20 21:17:45,330 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 21:17:45,331 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 35820 treesize of output 29708 Received shutdown request... [2022-09-20 21:31:28,235 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-09-20 21:31:28,246 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 [2022-09-20 21:31:28,246 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-09-20 21:31:28,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-20 21:31:28,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-09-20 21:31:28,440 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 161 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. [2022-09-20 21:31:28,441 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-09-20 21:31:28,441 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-09-20 21:31:28,442 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2022-09-20 21:31:28,445 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-20 21:31:28,445 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-20 21:31:28,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 09:31:28 BasicIcfg [2022-09-20 21:31:28,448 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-20 21:31:28,449 INFO L158 Benchmark]: Toolchain (without parser) took 860057.44ms. Allocated memory was 185.6MB in the beginning and 758.1MB in the end (delta: 572.5MB). Free memory was 123.5MB in the beginning and 403.4MB in the end (delta: -279.9MB). Peak memory consumption was 491.2MB. Max. memory is 8.0GB. [2022-09-20 21:31:28,449 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 185.6MB. Free memory is still 140.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 21:31:28,449 INFO L158 Benchmark]: CACSL2BoogieTranslator took 344.34ms. Allocated memory was 185.6MB in the beginning and 250.6MB in the end (delta: 65.0MB). Free memory was 123.3MB in the beginning and 219.8MB in the end (delta: -96.6MB). Peak memory consumption was 9.6MB. Max. memory is 8.0GB. [2022-09-20 21:31:28,449 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.23ms. Allocated memory is still 250.6MB. Free memory was 219.8MB in the beginning and 217.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-20 21:31:28,450 INFO L158 Benchmark]: Boogie Preprocessor took 41.97ms. Allocated memory is still 250.6MB. Free memory was 217.7MB in the beginning and 216.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-20 21:31:28,450 INFO L158 Benchmark]: RCFGBuilder took 645.85ms. Allocated memory is still 250.6MB. Free memory was 216.1MB in the beginning and 194.1MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2022-09-20 21:31:28,450 INFO L158 Benchmark]: TraceAbstraction took 858961.74ms. Allocated memory was 250.6MB in the beginning and 758.1MB in the end (delta: 507.5MB). Free memory was 193.6MB in the beginning and 403.4MB in the end (delta: -209.8MB). Peak memory consumption was 498.1MB. Max. memory is 8.0GB. [2022-09-20 21:31:28,452 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 185.6MB. Free memory is still 140.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 344.34ms. Allocated memory was 185.6MB in the beginning and 250.6MB in the end (delta: 65.0MB). Free memory was 123.3MB in the beginning and 219.8MB in the end (delta: -96.6MB). Peak memory consumption was 9.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 56.23ms. Allocated memory is still 250.6MB. Free memory was 219.8MB in the beginning and 217.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 41.97ms. Allocated memory is still 250.6MB. Free memory was 217.7MB in the beginning and 216.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 645.85ms. Allocated memory is still 250.6MB. Free memory was 216.1MB in the beginning and 194.1MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 858961.74ms. Allocated memory was 250.6MB in the beginning and 758.1MB in the end (delta: 507.5MB). Free memory was 193.6MB in the beginning and 403.4MB in the end (delta: -209.8MB). Peak memory consumption was 498.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 161 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-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 161 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-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 161 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 199 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 858.8s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1073 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1073 mSDsluCounter, 2347 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 707 IncrementalHoareTripleChecker+Unchecked, 2725 mSDsCounter, 61 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2434 IncrementalHoareTripleChecker+Invalid, 3202 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 61 mSolverCounterUnsat, 222 mSDtfsCounter, 2434 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 444 GetRequests, 301 SyntacticMatches, 4 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3843 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1449occurred in iteration=8, InterpolantAutomatonStates: 105, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 1311 NumberOfCodeBlocks, 1311 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1461 ConstructedInterpolants, 15 QuantifiedInterpolants, 12457 SizeOfPredicates, 34 NumberOfNonLiveVariables, 356 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 14/23 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