/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 --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 18:42:11,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 18:42:11,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 18:42:11,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 18:42:11,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 18:42:11,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 18:42:11,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 18:42:11,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 18:42:11,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 18:42:11,726 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 18:42:11,727 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 18:42:11,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 18:42:11,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 18:42:11,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 18:42:11,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 18:42:11,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 18:42:11,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 18:42:11,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 18:42:11,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 18:42:11,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 18:42:11,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 18:42:11,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 18:42:11,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 18:42:11,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 18:42:11,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 18:42:11,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 18:42:11,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 18:42:11,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 18:42:11,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 18:42:11,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 18:42:11,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 18:42:11,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 18:42:11,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 18:42:11,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 18:42:11,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 18:42:11,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 18:42:11,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 18:42:11,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 18:42:11,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 18:42:11,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 18:42:11,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 18:42:11,751 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 [2022-12-06 18:42:11,772 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 18:42:11,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 18:42:11,774 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-06 18:42:11,774 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-06 18:42:11,775 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 18:42:11,775 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 18:42:11,775 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 18:42:11,775 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 18:42:11,775 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 18:42:11,776 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 18:42:11,776 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 18:42:11,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 18:42:11,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 18:42:11,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 18:42:11,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 18:42:11,777 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 18:42:11,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 18:42:11,777 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 18:42:11,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 18:42:11,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 18:42:11,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 18:42:11,778 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 18:42:11,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 18:42:11,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 18:42:11,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 18:42:11,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 18:42:11,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 18:42:11,779 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 18:42:11,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 18:42:11,779 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-06 18:42:11,780 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-06 18:42:11,780 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 18:42:12,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 18:42:12,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 18:42:12,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 18:42:12,105 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 18:42:12,107 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 18:42:12,108 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c [2022-12-06 18:42:13,312 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 18:42:13,516 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 18:42:13,516 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c [2022-12-06 18:42:13,523 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de730b1ea/b4bf353450ab4030b0e09fb6341dd895/FLAG278b449a8 [2022-12-06 18:42:13,534 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de730b1ea/b4bf353450ab4030b0e09fb6341dd895 [2022-12-06 18:42:13,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 18:42:13,538 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 18:42:13,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 18:42:13,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 18:42:13,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 18:42:13,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:42:13" (1/1) ... [2022-12-06 18:42:13,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b11279b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:42:13, skipping insertion in model container [2022-12-06 18:42:13,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:42:13" (1/1) ... [2022-12-06 18:42:13,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 18:42:13,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 18:42:13,729 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c[2808,2821] [2022-12-06 18:42:13,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 18:42:13,743 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 18:42:13,770 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c[2808,2821] [2022-12-06 18:42:13,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 18:42:13,792 INFO L208 MainTranslator]: Completed translation [2022-12-06 18:42:13,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:42:13 WrapperNode [2022-12-06 18:42:13,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 18:42:13,795 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 18:42:13,795 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 18:42:13,795 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 18:42:13,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:42:13" (1/1) ... [2022-12-06 18:42:13,821 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:42:13" (1/1) ... [2022-12-06 18:42:13,854 INFO L138 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 183 [2022-12-06 18:42:13,854 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 18:42:13,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 18:42:13,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 18:42:13,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 18:42:13,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:42:13" (1/1) ... [2022-12-06 18:42:13,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:42:13" (1/1) ... [2022-12-06 18:42:13,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:42:13" (1/1) ... [2022-12-06 18:42:13,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:42:13" (1/1) ... [2022-12-06 18:42:13,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:42:13" (1/1) ... [2022-12-06 18:42:13,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:42:13" (1/1) ... [2022-12-06 18:42:13,890 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:42:13" (1/1) ... [2022-12-06 18:42:13,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:42:13" (1/1) ... [2022-12-06 18:42:13,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 18:42:13,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 18:42:13,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 18:42:13,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 18:42:13,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:42:13" (1/1) ... [2022-12-06 18:42:13,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 18:42:13,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:42:13,932 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) [2022-12-06 18:42:13,961 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 [2022-12-06 18:42:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 18:42:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-06 18:42:13,978 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-06 18:42:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-06 18:42:13,979 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-06 18:42:13,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 18:42:13,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 18:42:13,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 18:42:13,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-06 18:42:13,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 18:42:13,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 18:42:13,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 18:42:13,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 18:42:13,981 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 18:42:14,075 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 18:42:14,077 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 18:42:14,376 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 18:42:14,394 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 18:42:14,394 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-06 18:42:14,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:42:14 BoogieIcfgContainer [2022-12-06 18:42:14,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 18:42:14,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 18:42:14,398 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 18:42:14,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 18:42:14,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:42:13" (1/3) ... [2022-12-06 18:42:14,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20614ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:42:14, skipping insertion in model container [2022-12-06 18:42:14,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:42:13" (2/3) ... [2022-12-06 18:42:14,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20614ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:42:14, skipping insertion in model container [2022-12-06 18:42:14,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:42:14" (3/3) ... [2022-12-06 18:42:14,403 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-4.wvr.c [2022-12-06 18:42:14,416 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 18:42:14,417 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 18:42:14,417 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 18:42:14,516 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-06 18:42:14,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 219 transitions, 454 flow [2022-12-06 18:42:14,676 INFO L130 PetriNetUnfolder]: 21/217 cut-off events. [2022-12-06 18:42:14,676 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 18:42:14,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 217 events. 21/217 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 381 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 133. Up to 2 conditions per place. [2022-12-06 18:42:14,684 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 219 transitions, 454 flow [2022-12-06 18:42:14,696 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 209 transitions, 430 flow [2022-12-06 18:42:14,715 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 18:42:14,720 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;@b90f142, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 18:42:14,721 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-06 18:42:14,761 INFO L130 PetriNetUnfolder]: 18/182 cut-off events. [2022-12-06 18:42:14,761 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 18:42:14,761 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:42:14,762 INFO L213 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] [2022-12-06 18:42:14,763 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:42:14,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:42:14,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1795067223, now seen corresponding path program 1 times [2022-12-06 18:42:14,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:42:14,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059644937] [2022-12-06 18:42:14,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:42:14,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:42:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:42:15,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:42:15,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:42:15,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059644937] [2022-12-06 18:42:15,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059644937] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:42:15,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:42:15,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-06 18:42:15,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434170393] [2022-12-06 18:42:15,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:42:15,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 18:42:15,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:42:15,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 18:42:15,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-06 18:42:15,570 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 219 [2022-12-06 18:42:15,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 209 transitions, 430 flow. Second operand has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:42:15,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:42:15,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 219 [2022-12-06 18:42:15,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:42:15,827 INFO L130 PetriNetUnfolder]: 180/801 cut-off events. [2022-12-06 18:42:15,827 INFO L131 PetriNetUnfolder]: For 100/100 co-relation queries the response was YES. [2022-12-06 18:42:15,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1145 conditions, 801 events. 180/801 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3887 event pairs, 65 based on Foata normal form. 74/735 useless extension candidates. Maximal degree in co-relation 1029. Up to 220 conditions per place. [2022-12-06 18:42:15,838 INFO L137 encePairwiseOnDemand]: 198/219 looper letters, 43 selfloop transitions, 5 changer transitions 4/211 dead transitions. [2022-12-06 18:42:15,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 211 transitions, 536 flow [2022-12-06 18:42:15,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-06 18:42:15,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-06 18:42:15,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 760 transitions. [2022-12-06 18:42:15,856 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.867579908675799 [2022-12-06 18:42:15,862 INFO L294 CegarLoopForPetriNet]: 195 programPoint places, 3 predicate places. [2022-12-06 18:42:15,862 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 211 transitions, 536 flow [2022-12-06 18:42:15,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:42:15,863 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:42:15,864 INFO L213 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] [2022-12-06 18:42:15,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 18:42:15,864 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:42:15,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:42:15,866 INFO L85 PathProgramCache]: Analyzing trace with hash 431557173, now seen corresponding path program 1 times [2022-12-06 18:42:15,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:42:15,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768905066] [2022-12-06 18:42:15,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:42:15,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:42:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:42:16,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:42:16,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:42:16,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768905066] [2022-12-06 18:42:16,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768905066] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:42:16,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:42:16,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 18:42:16,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837871477] [2022-12-06 18:42:16,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:42:16,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 18:42:16,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:42:16,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 18:42:16,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-06 18:42:16,327 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 219 [2022-12-06 18:42:16,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 211 transitions, 536 flow. Second operand has 5 states, 5 states have (on average 172.0) internal successors, (860), 5 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:42:16,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:42:16,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 219 [2022-12-06 18:42:16,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:42:16,813 INFO L130 PetriNetUnfolder]: 409/1928 cut-off events. [2022-12-06 18:42:16,815 INFO L131 PetriNetUnfolder]: For 496/705 co-relation queries the response was YES. [2022-12-06 18:42:16,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3365 conditions, 1928 events. 409/1928 cut-off events. For 496/705 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14082 event pairs, 147 based on Foata normal form. 7/1674 useless extension candidates. Maximal degree in co-relation 2906. Up to 433 conditions per place. [2022-12-06 18:42:16,827 INFO L137 encePairwiseOnDemand]: 211/219 looper letters, 128 selfloop transitions, 9 changer transitions 4/297 dead transitions. [2022-12-06 18:42:16,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 297 transitions, 1171 flow [2022-12-06 18:42:16,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-06 18:42:16,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-06 18:42:16,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1107 transitions. [2022-12-06 18:42:16,831 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8424657534246576 [2022-12-06 18:42:16,831 INFO L294 CegarLoopForPetriNet]: 195 programPoint places, 8 predicate places. [2022-12-06 18:42:16,832 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 297 transitions, 1171 flow [2022-12-06 18:42:16,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 172.0) internal successors, (860), 5 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:42:16,833 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:42:16,836 INFO L213 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] [2022-12-06 18:42:16,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 18:42:16,841 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:42:16,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:42:16,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1219203027, now seen corresponding path program 2 times [2022-12-06 18:42:16,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:42:16,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447875209] [2022-12-06 18:42:16,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:42:16,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:42:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:42:17,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:42:17,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:42:17,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447875209] [2022-12-06 18:42:17,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447875209] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:42:17,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:42:17,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 18:42:17,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486127819] [2022-12-06 18:42:17,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:42:17,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 18:42:17,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:42:17,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 18:42:17,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-06 18:42:17,175 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 219 [2022-12-06 18:42:17,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 297 transitions, 1171 flow. Second operand has 6 states, 6 states have (on average 173.5) internal successors, (1041), 6 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:42:17,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:42:17,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 219 [2022-12-06 18:42:17,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:42:17,554 INFO L130 PetriNetUnfolder]: 400/1843 cut-off events. [2022-12-06 18:42:17,554 INFO L131 PetriNetUnfolder]: For 826/931 co-relation queries the response was YES. [2022-12-06 18:42:17,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3821 conditions, 1843 events. 400/1843 cut-off events. For 826/931 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 13036 event pairs, 148 based on Foata normal form. 9/1597 useless extension candidates. Maximal degree in co-relation 3213. Up to 462 conditions per place. [2022-12-06 18:42:17,566 INFO L137 encePairwiseOnDemand]: 209/219 looper letters, 120 selfloop transitions, 23 changer transitions 4/307 dead transitions. [2022-12-06 18:42:17,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 307 transitions, 1531 flow [2022-12-06 18:42:17,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 18:42:17,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 18:42:17,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1255 transitions. [2022-12-06 18:42:17,569 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8186562296151337 [2022-12-06 18:42:17,571 INFO L294 CegarLoopForPetriNet]: 195 programPoint places, 14 predicate places. [2022-12-06 18:42:17,571 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 307 transitions, 1531 flow [2022-12-06 18:42:17,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 173.5) internal successors, (1041), 6 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:42:17,572 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:42:17,572 INFO L213 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] [2022-12-06 18:42:17,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 18:42:17,573 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:42:17,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:42:17,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1499616792, now seen corresponding path program 1 times [2022-12-06 18:42:17,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:42:17,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961425510] [2022-12-06 18:42:17,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:42:17,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:42:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:42:17,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:42:17,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:42:17,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961425510] [2022-12-06 18:42:17,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961425510] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:42:17,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:42:17,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 18:42:17,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791212253] [2022-12-06 18:42:17,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:42:17,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 18:42:17,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:42:17,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 18:42:17,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-06 18:42:17,864 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 219 [2022-12-06 18:42:17,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 307 transitions, 1531 flow. Second operand has 6 states, 6 states have (on average 171.83333333333334) internal successors, (1031), 6 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:42:17,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:42:17,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 219 [2022-12-06 18:42:17,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:42:18,314 INFO L130 PetriNetUnfolder]: 505/2387 cut-off events. [2022-12-06 18:42:18,315 INFO L131 PetriNetUnfolder]: For 1617/2060 co-relation queries the response was YES. [2022-12-06 18:42:18,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5770 conditions, 2387 events. 505/2387 cut-off events. For 1617/2060 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 18422 event pairs, 129 based on Foata normal form. 16/2109 useless extension candidates. Maximal degree in co-relation 4726. Up to 589 conditions per place. [2022-12-06 18:42:18,332 INFO L137 encePairwiseOnDemand]: 212/219 looper letters, 194 selfloop transitions, 18 changer transitions 4/373 dead transitions. [2022-12-06 18:42:18,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 373 transitions, 2425 flow [2022-12-06 18:42:18,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 18:42:18,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 18:42:18,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1268 transitions. [2022-12-06 18:42:18,336 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.827136333985649 [2022-12-06 18:42:18,337 INFO L294 CegarLoopForPetriNet]: 195 programPoint places, 20 predicate places. [2022-12-06 18:42:18,337 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 373 transitions, 2425 flow [2022-12-06 18:42:18,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 171.83333333333334) internal successors, (1031), 6 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:42:18,337 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:42:18,338 INFO L213 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] [2022-12-06 18:42:18,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 18:42:18,338 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:42:18,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:42:18,338 INFO L85 PathProgramCache]: Analyzing trace with hash 655143600, now seen corresponding path program 2 times [2022-12-06 18:42:18,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:42:18,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879274958] [2022-12-06 18:42:18,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:42:18,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:42:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:42:18,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:42:18,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:42:18,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879274958] [2022-12-06 18:42:18,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879274958] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:42:18,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:42:18,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 18:42:18,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866599578] [2022-12-06 18:42:18,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:42:18,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 18:42:18,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:42:18,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 18:42:18,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-06 18:42:18,642 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 219 [2022-12-06 18:42:18,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 373 transitions, 2425 flow. Second operand has 5 states, 5 states have (on average 172.4) internal successors, (862), 5 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:42:18,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:42:18,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 219 [2022-12-06 18:42:18,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:42:18,997 INFO L130 PetriNetUnfolder]: 537/2545 cut-off events. [2022-12-06 18:42:18,997 INFO L131 PetriNetUnfolder]: For 2767/3542 co-relation queries the response was YES. [2022-12-06 18:42:19,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7139 conditions, 2545 events. 537/2545 cut-off events. For 2767/3542 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 20004 event pairs, 130 based on Foata normal form. 28/2259 useless extension candidates. Maximal degree in co-relation 5643. Up to 599 conditions per place. [2022-12-06 18:42:19,066 INFO L137 encePairwiseOnDemand]: 212/219 looper letters, 216 selfloop transitions, 21 changer transitions 4/398 dead transitions. [2022-12-06 18:42:19,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 398 transitions, 3142 flow [2022-12-06 18:42:19,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 18:42:19,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 18:42:19,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 926 transitions. [2022-12-06 18:42:19,069 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.845662100456621 [2022-12-06 18:42:19,071 INFO L294 CegarLoopForPetriNet]: 195 programPoint places, 24 predicate places. [2022-12-06 18:42:19,071 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 398 transitions, 3142 flow [2022-12-06 18:42:19,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 172.4) internal successors, (862), 5 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:42:19,072 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:42:19,072 INFO L213 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] [2022-12-06 18:42:19,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-06 18:42:19,072 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:42:19,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:42:19,073 INFO L85 PathProgramCache]: Analyzing trace with hash 150658714, now seen corresponding path program 3 times [2022-12-06 18:42:19,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:42:19,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352521383] [2022-12-06 18:42:19,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:42:19,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:42:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:42:19,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:42:19,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:42:19,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352521383] [2022-12-06 18:42:19,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352521383] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:42:19,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:42:19,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 18:42:19,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15478996] [2022-12-06 18:42:19,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:42:19,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 18:42:19,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:42:19,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 18:42:19,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-06 18:42:19,330 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 219 [2022-12-06 18:42:19,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 398 transitions, 3142 flow. Second operand has 5 states, 5 states have (on average 172.4) internal successors, (862), 5 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:42:19,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:42:19,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 219 [2022-12-06 18:42:19,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:42:19,765 INFO L130 PetriNetUnfolder]: 532/2525 cut-off events. [2022-12-06 18:42:19,765 INFO L131 PetriNetUnfolder]: For 3835/4373 co-relation queries the response was YES. [2022-12-06 18:42:19,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8031 conditions, 2525 events. 532/2525 cut-off events. For 3835/4373 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 19667 event pairs, 114 based on Foata normal form. 25/2240 useless extension candidates. Maximal degree in co-relation 6414. Up to 597 conditions per place. [2022-12-06 18:42:19,783 INFO L137 encePairwiseOnDemand]: 212/219 looper letters, 212 selfloop transitions, 19 changer transitions 4/392 dead transitions. [2022-12-06 18:42:19,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 392 transitions, 3526 flow [2022-12-06 18:42:19,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 18:42:19,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 18:42:19,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 926 transitions. [2022-12-06 18:42:19,786 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.845662100456621 [2022-12-06 18:42:19,787 INFO L294 CegarLoopForPetriNet]: 195 programPoint places, 28 predicate places. [2022-12-06 18:42:19,787 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 392 transitions, 3526 flow [2022-12-06 18:42:19,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 172.4) internal successors, (862), 5 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:42:19,787 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:42:19,788 INFO L213 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] [2022-12-06 18:42:19,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-06 18:42:19,788 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:42:19,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:42:19,788 INFO L85 PathProgramCache]: Analyzing trace with hash 377669920, now seen corresponding path program 4 times [2022-12-06 18:42:19,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:42:19,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155751373] [2022-12-06 18:42:19,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:42:19,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:42:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:42:20,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:42:20,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:42:20,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155751373] [2022-12-06 18:42:20,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155751373] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:42:20,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:42:20,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 18:42:20,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902115125] [2022-12-06 18:42:20,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:42:20,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 18:42:20,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:42:20,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 18:42:20,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-06 18:42:20,011 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 219 [2022-12-06 18:42:20,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 392 transitions, 3526 flow. Second operand has 6 states, 6 states have (on average 171.83333333333334) internal successors, (1031), 6 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:42:20,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:42:20,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 219 [2022-12-06 18:42:20,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:42:20,441 INFO L130 PetriNetUnfolder]: 557/2617 cut-off events. [2022-12-06 18:42:20,441 INFO L131 PetriNetUnfolder]: For 5673/6831 co-relation queries the response was YES. [2022-12-06 18:42:20,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9386 conditions, 2617 events. 557/2617 cut-off events. For 5673/6831 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 20620 event pairs, 151 based on Foata normal form. 35/2334 useless extension candidates. Maximal degree in co-relation 7610. Up to 627 conditions per place. [2022-12-06 18:42:20,464 INFO L137 encePairwiseOnDemand]: 212/219 looper letters, 223 selfloop transitions, 20 changer transitions 4/404 dead transitions. [2022-12-06 18:42:20,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 404 transitions, 4172 flow [2022-12-06 18:42:20,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-06 18:42:20,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-06 18:42:20,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1104 transitions. [2022-12-06 18:42:20,467 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8401826484018264 [2022-12-06 18:42:20,468 INFO L294 CegarLoopForPetriNet]: 195 programPoint places, 33 predicate places. [2022-12-06 18:42:20,468 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 404 transitions, 4172 flow [2022-12-06 18:42:20,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 171.83333333333334) internal successors, (1031), 6 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:42:20,469 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:42:20,469 INFO L213 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] [2022-12-06 18:42:20,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-06 18:42:20,470 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:42:20,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:42:20,470 INFO L85 PathProgramCache]: Analyzing trace with hash 518252360, now seen corresponding path program 5 times [2022-12-06 18:42:20,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:42:20,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120938729] [2022-12-06 18:42:20,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:42:20,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:42:20,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:42:20,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:42:20,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:42:20,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120938729] [2022-12-06 18:42:20,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120938729] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:42:20,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:42:20,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 18:42:20,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528102] [2022-12-06 18:42:20,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:42:20,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 18:42:20,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:42:20,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 18:42:20,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-06 18:42:20,682 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 219 [2022-12-06 18:42:20,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 404 transitions, 4172 flow. Second operand has 5 states, 5 states have (on average 172.4) internal successors, (862), 5 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:42:20,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:42:20,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 219 [2022-12-06 18:42:20,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:42:21,112 INFO L130 PetriNetUnfolder]: 555/2616 cut-off events. [2022-12-06 18:42:21,113 INFO L131 PetriNetUnfolder]: For 7491/8489 co-relation queries the response was YES. [2022-12-06 18:42:21,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10385 conditions, 2616 events. 555/2616 cut-off events. For 7491/8489 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 20644 event pairs, 148 based on Foata normal form. 30/2327 useless extension candidates. Maximal degree in co-relation 10017. Up to 819 conditions per place. [2022-12-06 18:42:21,134 INFO L137 encePairwiseOnDemand]: 212/219 looper letters, 220 selfloop transitions, 22 changer transitions 4/403 dead transitions. [2022-12-06 18:42:21,134 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 403 transitions, 4640 flow [2022-12-06 18:42:21,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 18:42:21,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 18:42:21,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 911 transitions. [2022-12-06 18:42:21,137 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8319634703196347 [2022-12-06 18:42:21,137 INFO L294 CegarLoopForPetriNet]: 195 programPoint places, 37 predicate places. [2022-12-06 18:42:21,137 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 403 transitions, 4640 flow [2022-12-06 18:42:21,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 172.4) internal successors, (862), 5 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:42:21,138 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:42:21,138 INFO L213 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] [2022-12-06 18:42:21,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-06 18:42:21,139 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:42:21,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:42:21,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1398706206, now seen corresponding path program 6 times [2022-12-06 18:42:21,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:42:21,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435334381] [2022-12-06 18:42:21,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:42:21,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:42:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:42:21,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:42:21,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:42:21,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435334381] [2022-12-06 18:42:21,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435334381] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:42:21,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:42:21,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 18:42:21,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148516909] [2022-12-06 18:42:21,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:42:21,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 18:42:21,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:42:21,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 18:42:21,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-06 18:42:21,337 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 219 [2022-12-06 18:42:21,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 403 transitions, 4640 flow. Second operand has 5 states, 5 states have (on average 172.4) internal successors, (862), 5 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:42:21,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:42:21,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 219 [2022-12-06 18:42:21,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:42:21,766 INFO L130 PetriNetUnfolder]: 549/2600 cut-off events. [2022-12-06 18:42:21,766 INFO L131 PetriNetUnfolder]: For 9202/10152 co-relation queries the response was YES. [2022-12-06 18:42:21,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11272 conditions, 2600 events. 549/2600 cut-off events. For 9202/10152 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 20455 event pairs, 148 based on Foata normal form. 21/2306 useless extension candidates. Maximal degree in co-relation 10878. Up to 817 conditions per place. [2022-12-06 18:42:21,788 INFO L137 encePairwiseOnDemand]: 212/219 looper letters, 216 selfloop transitions, 19 changer transitions 4/396 dead transitions. [2022-12-06 18:42:21,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 396 transitions, 4978 flow [2022-12-06 18:42:21,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 18:42:21,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 18:42:21,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 911 transitions. [2022-12-06 18:42:21,791 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8319634703196347 [2022-12-06 18:42:21,791 INFO L294 CegarLoopForPetriNet]: 195 programPoint places, 41 predicate places. [2022-12-06 18:42:21,792 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 396 transitions, 4978 flow [2022-12-06 18:42:21,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 172.4) internal successors, (862), 5 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:42:21,792 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:42:21,792 INFO L213 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] [2022-12-06 18:42:21,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-06 18:42:21,793 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:42:21,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:42:21,793 INFO L85 PathProgramCache]: Analyzing trace with hash 449450082, now seen corresponding path program 7 times [2022-12-06 18:42:21,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:42:21,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041573865] [2022-12-06 18:42:21,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:42:21,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:42:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:42:21,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:42:21,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:42:21,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041573865] [2022-12-06 18:42:21,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041573865] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:42:21,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:42:21,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 18:42:21,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897153332] [2022-12-06 18:42:21,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:42:21,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 18:42:21,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:42:21,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 18:42:21,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-06 18:42:21,991 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 219 [2022-12-06 18:42:21,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 396 transitions, 4978 flow. Second operand has 6 states, 6 states have (on average 171.83333333333334) internal successors, (1031), 6 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:42:21,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:42:21,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 219 [2022-12-06 18:42:21,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:42:22,431 INFO L130 PetriNetUnfolder]: 523/2473 cut-off events. [2022-12-06 18:42:22,432 INFO L131 PetriNetUnfolder]: For 13061/15707 co-relation queries the response was YES. [2022-12-06 18:42:22,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11805 conditions, 2473 events. 523/2473 cut-off events. For 13061/15707 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 19136 event pairs, 93 based on Foata normal form. 19/2190 useless extension candidates. Maximal degree in co-relation 11405. Up to 784 conditions per place. [2022-12-06 18:42:22,455 INFO L137 encePairwiseOnDemand]: 212/219 looper letters, 201 selfloop transitions, 20 changer transitions 4/382 dead transitions. [2022-12-06 18:42:22,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 382 transitions, 5128 flow [2022-12-06 18:42:22,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-06 18:42:22,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-06 18:42:22,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1090 transitions. [2022-12-06 18:42:22,459 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8295281582952816 [2022-12-06 18:42:22,460 INFO L294 CegarLoopForPetriNet]: 195 programPoint places, 46 predicate places. [2022-12-06 18:42:22,460 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 382 transitions, 5128 flow [2022-12-06 18:42:22,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 171.83333333333334) internal successors, (1031), 6 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:42:22,461 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:42:22,462 INFO L213 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] [2022-12-06 18:42:22,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-06 18:42:22,463 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:42:22,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:42:22,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1672146162, now seen corresponding path program 1 times [2022-12-06 18:42:22,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:42:22,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585714156] [2022-12-06 18:42:22,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:42:22,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:42:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:42:22,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:42:22,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:42:22,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585714156] [2022-12-06 18:42:22,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585714156] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:42:22,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933226770] [2022-12-06 18:42:22,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:42:22,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:42:22,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:42:22,747 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) [2022-12-06 18:42:22,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-06 18:42:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:42:22,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-06 18:42:22,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:42:23,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 18:42:23,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-06 18:42:23,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933226770] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:42:23,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-06 18:42:23,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-12-06 18:42:23,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546124749] [2022-12-06 18:42:23,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:42:23,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-06 18:42:23,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:42:23,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-06 18:42:23,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-12-06 18:42:23,242 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 219 [2022-12-06 18:42:23,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 382 transitions, 5128 flow. Second operand has 8 states, 8 states have (on average 151.0) internal successors, (1208), 8 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:42:23,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:42:23,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 219 [2022-12-06 18:42:23,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:42:24,022 INFO L130 PetriNetUnfolder]: 929/3660 cut-off events. [2022-12-06 18:42:24,022 INFO L131 PetriNetUnfolder]: For 26990/29683 co-relation queries the response was YES. [2022-12-06 18:42:24,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18085 conditions, 3660 events. 929/3660 cut-off events. For 26990/29683 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 30234 event pairs, 286 based on Foata normal form. 6/3240 useless extension candidates. Maximal degree in co-relation 15028. Up to 977 conditions per place. [2022-12-06 18:42:24,058 INFO L137 encePairwiseOnDemand]: 199/219 looper letters, 63 selfloop transitions, 13 changer transitions 48/431 dead transitions. [2022-12-06 18:42:24,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 431 transitions, 6202 flow [2022-12-06 18:42:24,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-06 18:42:24,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-06 18:42:24,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1560 transitions. [2022-12-06 18:42:24,063 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7123287671232876 [2022-12-06 18:42:24,063 INFO L294 CegarLoopForPetriNet]: 195 programPoint places, 55 predicate places. [2022-12-06 18:42:24,063 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 431 transitions, 6202 flow [2022-12-06 18:42:24,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 151.0) internal successors, (1208), 8 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:42:24,064 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:42:24,064 INFO L213 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] [2022-12-06 18:42:24,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-06 18:42:24,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-06 18:42:24,271 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:42:24,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:42:24,272 INFO L85 PathProgramCache]: Analyzing trace with hash -782182229, now seen corresponding path program 1 times [2022-12-06 18:42:24,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:42:24,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275485979] [2022-12-06 18:42:24,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:42:24,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:42:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:42:24,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 18:42:24,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:42:24,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275485979] [2022-12-06 18:42:24,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275485979] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:42:24,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505791863] [2022-12-06 18:42:24,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:42:24,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:42:24,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:42:24,590 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) [2022-12-06 18:42:24,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-06 18:42:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:42:24,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-06 18:42:24,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:42:25,259 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-12-06 18:42:25,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2022-12-06 18:42:25,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:42:25,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:42:25,769 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-12-06 18:42:25,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-12-06 18:42:26,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:42:26,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505791863] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:42:26,441 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:42:26,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 18, 18] total 35 [2022-12-06 18:42:26,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469573914] [2022-12-06 18:42:26,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:42:26,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-06 18:42:26,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:42:26,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-06 18:42:26,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1081, Unknown=0, NotChecked=0, Total=1190 [2022-12-06 18:42:26,446 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 219 [2022-12-06 18:42:26,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 431 transitions, 6202 flow. Second operand has 35 states, 35 states have (on average 76.82857142857142) internal successors, (2689), 35 states have internal predecessors, (2689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:42:26,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:42:26,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 219 [2022-12-06 18:42:26,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:42:46,723 INFO L130 PetriNetUnfolder]: 26097/53424 cut-off events. [2022-12-06 18:42:46,723 INFO L131 PetriNetUnfolder]: For 359492/360248 co-relation queries the response was YES. [2022-12-06 18:42:46,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240836 conditions, 53424 events. 26097/53424 cut-off events. For 359492/360248 co-relation queries the response was YES. Maximal size of possible extension queue 830. Compared 536894 event pairs, 1493 based on Foata normal form. 84/48830 useless extension candidates. Maximal degree in co-relation 164389. Up to 10336 conditions per place. [2022-12-06 18:42:47,145 INFO L137 encePairwiseOnDemand]: 147/219 looper letters, 2616 selfloop transitions, 610 changer transitions 1116/4405 dead transitions. [2022-12-06 18:42:47,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 4405 transitions, 62129 flow [2022-12-06 18:42:47,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2022-12-06 18:42:47,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2022-12-06 18:42:47,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 18179 transitions. [2022-12-06 18:42:47,187 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.38971423671404376 [2022-12-06 18:42:47,188 INFO L294 CegarLoopForPetriNet]: 195 programPoint places, 267 predicate places. [2022-12-06 18:42:47,188 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 4405 transitions, 62129 flow [2022-12-06 18:42:47,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 76.82857142857142) internal successors, (2689), 35 states have internal predecessors, (2689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:42:47,190 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:42:47,190 INFO L213 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] [2022-12-06 18:42:47,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-06 18:42:47,396 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,SelfDestructingSolverStorable11 [2022-12-06 18:42:47,396 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:42:47,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:42:47,397 INFO L85 PathProgramCache]: Analyzing trace with hash 770075267, now seen corresponding path program 2 times [2022-12-06 18:42:47,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:42:47,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442829118] [2022-12-06 18:42:47,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:42:47,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:42:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:42:47,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 18:42:47,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:42:47,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442829118] [2022-12-06 18:42:47,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442829118] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:42:47,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867061062] [2022-12-06 18:42:47,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 18:42:47,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:42:47,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:42:47,784 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 18:42:47,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-06 18:42:47,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 18:42:47,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:42:47,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-06 18:42:47,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:42:48,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-06 18:42:48,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 18:42:48,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 18:42:48,802 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-12-06 18:42:48,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2022-12-06 18:42:48,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:42:48,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:42:49,443 WARN L837 $PredicateComparison]: unable to prove that (forall ((~x2~0 Int) (v_ArrVal_171 (Array Int Int)) (v_ArrVal_172 (Array Int Int))) (or (< ~x2~0 0) (<= c_~size~0 ~x2~0) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_171) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_172) c_~f~0.base))) (= (select .cse0 (+ (* c_~x1~0 4) c_~f~0.offset)) (select .cse0 (+ c_~f~0.offset (* ~x2~0 4))))))) is different from false [2022-12-06 18:42:49,547 WARN L837 $PredicateComparison]: unable to prove that (forall ((~x2~0 Int) (v_ArrVal_171 (Array Int Int)) (v_ArrVal_172 (Array Int Int))) (or (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_171) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_172) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|))) (= (select .cse0 (+ (* ~x2~0 4) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)) (select .cse0 (+ (* c_~x1~0 4) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)))) (< ~x2~0 0) (<= c_~size~0 ~x2~0))) is different from false [2022-12-06 18:42:49,563 WARN L837 $PredicateComparison]: unable to prove that (forall ((~x2~0 Int) (v_ArrVal_171 (Array Int Int)) (v_ArrVal_172 (Array Int Int))) (or (< ~x2~0 0) (<= c_~size~0 ~x2~0) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_171) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_172) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (= (select .cse0 (+ (* ~x2~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select .cse0 (+ (* c_~x1~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))))) is different from false [2022-12-06 18:42:49,796 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:42:49,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 44 [2022-12-06 18:42:49,807 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-12-06 18:42:49,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 198 treesize of output 173 [2022-12-06 18:42:49,814 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-06 18:42:49,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 59 [2022-12-06 18:42:49,822 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-06 18:42:49,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 94 [2022-12-06 18:42:50,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:42:50,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867061062] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:42:50,187 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:42:50,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 27, 24] total 50 [2022-12-06 18:42:50,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869344335] [2022-12-06 18:42:50,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:42:50,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-12-06 18:42:50,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:42:50,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-12-06 18:42:50,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1937, Unknown=23, NotChecked=276, Total=2450 [2022-12-06 18:42:50,196 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 219 [2022-12-06 18:42:50,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 4405 transitions, 62129 flow. Second operand has 50 states, 50 states have (on average 61.6) internal successors, (3080), 50 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:42:50,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:42:50,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 219 [2022-12-06 18:42:50,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:43:46,252 INFO L130 PetriNetUnfolder]: 43993/91423 cut-off events. [2022-12-06 18:43:46,252 INFO L131 PetriNetUnfolder]: For 599441/602415 co-relation queries the response was YES. [2022-12-06 18:43:46,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469449 conditions, 91423 events. 43993/91423 cut-off events. For 599441/602415 co-relation queries the response was YES. Maximal size of possible extension queue 1938. Compared 1003749 event pairs, 1825 based on Foata normal form. 570/84839 useless extension candidates. Maximal degree in co-relation 334935. Up to 23312 conditions per place. [2022-12-06 18:43:46,964 INFO L137 encePairwiseOnDemand]: 138/219 looper letters, 5936 selfloop transitions, 1323 changer transitions 2890/10202 dead transitions. [2022-12-06 18:43:46,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 794 places, 10202 transitions, 148198 flow [2022-12-06 18:43:46,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 333 states. [2022-12-06 18:43:46,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2022-12-06 18:43:46,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 22040 transitions. [2022-12-06 18:43:46,999 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3022200282474255 [2022-12-06 18:43:47,000 INFO L294 CegarLoopForPetriNet]: 195 programPoint places, 599 predicate places. [2022-12-06 18:43:47,001 INFO L495 AbstractCegarLoop]: Abstraction has has 794 places, 10202 transitions, 148198 flow [2022-12-06 18:43:47,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 61.6) internal successors, (3080), 50 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:43:47,002 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:43:47,002 INFO L213 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] [2022-12-06 18:43:47,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-06 18:43:47,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:43:47,209 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:43:47,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:43:47,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1120324435, now seen corresponding path program 3 times [2022-12-06 18:43:47,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:43:47,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217662487] [2022-12-06 18:43:47,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:43:47,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:43:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:43:47,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 18:43:47,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:43:47,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217662487] [2022-12-06 18:43:47,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217662487] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:43:47,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799709035] [2022-12-06 18:43:47,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-06 18:43:47,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:43:47,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:43:47,828 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 18:43:47,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-06 18:43:47,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-06 18:43:47,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:43:47,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-06 18:43:47,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:43:48,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-06 18:43:48,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 18:43:48,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-06 18:43:48,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-06 18:43:48,770 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-12-06 18:43:48,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2022-12-06 18:43:48,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:43:48,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:43:49,186 WARN L837 $PredicateComparison]: unable to prove that (forall ((~x2~0 Int) (v_ArrVal_200 (Array Int Int))) (or (= |c_thread1Thread1of1ForFork1_#t~mem1#1| (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_200) c_~f~0.base) (+ c_~f~0.offset (* ~x2~0 4)))) (< ~x2~0 0) (<= c_~size~0 ~x2~0))) is different from false [2022-12-06 18:43:49,199 WARN L837 $PredicateComparison]: unable to prove that (forall ((~x2~0 Int) (v_ArrVal_200 (Array Int Int))) (or (< ~x2~0 0) (<= c_~size~0 ~x2~0) (= (select (select |c_#memory_int| c_~f~0.base) (+ (* c_~x1~0 4) c_~f~0.offset)) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_200) c_~f~0.base) (+ c_~f~0.offset (* ~x2~0 4)))))) is different from false [2022-12-06 18:43:49,451 WARN L837 $PredicateComparison]: unable to prove that (forall ((~x2~0 Int) (v_ArrVal_199 (Array Int Int)) (v_ArrVal_200 (Array Int Int))) (or (< ~x2~0 0) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_199))) (= (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) (+ (* c_~x1~0 4) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)) (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_200) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) (+ (* ~x2~0 4) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)))) (<= c_~size~0 ~x2~0))) is different from false [2022-12-06 18:43:49,462 WARN L837 $PredicateComparison]: unable to prove that (forall ((~x2~0 Int) (v_ArrVal_199 (Array Int Int)) (v_ArrVal_200 (Array Int Int))) (or (< ~x2~0 0) (<= c_~size~0 ~x2~0) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_199))) (= (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* c_~x1~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_200) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* ~x2~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))))) is different from false [2022-12-06 18:43:49,672 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:43:49,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 41 [2022-12-06 18:43:49,681 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:43:49,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 202 treesize of output 166 [2022-12-06 18:43:49,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 130 [2022-12-06 18:43:49,695 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:43:49,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 106 [2022-12-06 18:43:50,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-06 18:43:50,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799709035] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:43:50,388 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:43:50,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 27, 27] total 55 [2022-12-06 18:43:50,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390868846] [2022-12-06 18:43:50,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:43:50,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-12-06 18:43:50,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:43:50,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-12-06 18:43:50,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=2378, Unknown=14, NotChecked=404, Total=2970 [2022-12-06 18:43:50,393 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 219 [2022-12-06 18:43:50,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 794 places, 10202 transitions, 148198 flow. Second operand has 55 states, 55 states have (on average 61.27272727272727) internal successors, (3370), 55 states have internal predecessors, (3370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:43:50,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:43:50,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 219 [2022-12-06 18:43:50,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:46:05,184 INFO L130 PetriNetUnfolder]: 57700/120222 cut-off events. [2022-12-06 18:46:05,184 INFO L131 PetriNetUnfolder]: For 849343/856397 co-relation queries the response was YES. [2022-12-06 18:46:05,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 719305 conditions, 120222 events. 57700/120222 cut-off events. For 849343/856397 co-relation queries the response was YES. Maximal size of possible extension queue 2335. Compared 1367377 event pairs, 1965 based on Foata normal form. 1425/112461 useless extension candidates. Maximal degree in co-relation 520006. Up to 38239 conditions per place. [2022-12-06 18:46:05,934 INFO L137 encePairwiseOnDemand]: 137/219 looper letters, 7761 selfloop transitions, 2662 changer transitions 4593/15069 dead transitions. [2022-12-06 18:46:05,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1200 places, 15069 transitions, 239682 flow [2022-12-06 18:46:05,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 407 states. [2022-12-06 18:46:05,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2022-12-06 18:46:05,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 27396 transitions. [2022-12-06 18:46:05,969 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.30736091010063615 [2022-12-06 18:46:05,970 INFO L294 CegarLoopForPetriNet]: 195 programPoint places, 1005 predicate places. [2022-12-06 18:46:05,970 INFO L495 AbstractCegarLoop]: Abstraction has has 1200 places, 15069 transitions, 239682 flow [2022-12-06 18:46:05,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 61.27272727272727) internal successors, (3370), 55 states have internal predecessors, (3370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:46:05,971 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:46:05,972 INFO L213 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] [2022-12-06 18:46:05,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-06 18:46:06,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:46:06,178 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:46:06,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:46:06,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1216091675, now seen corresponding path program 4 times [2022-12-06 18:46:06,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:46:06,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337088978] [2022-12-06 18:46:06,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:46:06,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:46:06,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:46:06,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 18:46:06,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:46:06,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337088978] [2022-12-06 18:46:06,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337088978] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:46:06,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095379423] [2022-12-06 18:46:06,494 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-06 18:46:06,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:46:06,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:46:06,496 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 18:46:06,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-06 18:46:06,590 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-06 18:46:06,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:46:06,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 52 conjunts are in the unsatisfiable core [2022-12-06 18:46:06,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:46:06,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-06 18:46:07,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 18:46:07,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-06 18:46:07,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-06 18:46:07,471 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-12-06 18:46:07,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2022-12-06 18:46:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:46:07,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:46:07,912 WARN L837 $PredicateComparison]: unable to prove that (forall ((~x2~0 Int) (v_ArrVal_228 (Array Int Int))) (or (= (select (select |c_#memory_int| c_~f~0.base) (+ (* c_~x1~0 4) c_~f~0.offset)) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_228) c_~f~0.base) (+ c_~f~0.offset (* ~x2~0 4)))) (< ~x2~0 0) (<= c_~size~0 ~x2~0))) is different from false [2022-12-06 18:46:07,975 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_227 (Array Int Int)) (~x2~0 Int) (v_ArrVal_228 (Array Int Int))) (or (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_227))) (= (select (select .cse0 c_~f~0.base) (+ (* c_~x1~0 4) c_~f~0.offset)) (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_228) c_~f~0.base) (+ c_~f~0.offset (* ~x2~0 4))))) (< ~x2~0 0) (<= c_~size~0 ~x2~0))) is different from false [2022-12-06 18:46:08,382 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:46:08,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 41 [2022-12-06 18:46:08,390 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:46:08,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 202 treesize of output 166 [2022-12-06 18:46:08,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 130 [2022-12-06 18:46:08,408 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:46:08,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 106 [2022-12-06 18:46:08,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-06 18:46:08,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095379423] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:46:08,979 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:46:08,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 27, 27] total 54 [2022-12-06 18:46:08,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075653400] [2022-12-06 18:46:08,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:46:08,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-12-06 18:46:08,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:46:08,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-12-06 18:46:08,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=2449, Unknown=34, NotChecked=202, Total=2862 [2022-12-06 18:46:08,983 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 219 [2022-12-06 18:46:08,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1200 places, 15069 transitions, 239682 flow. Second operand has 54 states, 54 states have (on average 61.351851851851855) internal successors, (3313), 54 states have internal predecessors, (3313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:46:08,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:46:08,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 219 [2022-12-06 18:46:08,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:46:17,632 WARN L233 SmtUtils]: Spent 8.50s on a formula simplification. DAG size of input: 104 DAG size of output: 99 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:50:08,769 INFO L130 PetriNetUnfolder]: 66781/137761 cut-off events. [2022-12-06 18:50:08,769 INFO L131 PetriNetUnfolder]: For 1057762/1067079 co-relation queries the response was YES. [2022-12-06 18:50:09,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 945622 conditions, 137761 events. 66781/137761 cut-off events. For 1057762/1067079 co-relation queries the response was YES. Maximal size of possible extension queue 2657. Compared 1582588 event pairs, 2038 based on Foata normal form. 1570/129086 useless extension candidates. Maximal degree in co-relation 639146. Up to 49490 conditions per place. [2022-12-06 18:50:09,987 INFO L137 encePairwiseOnDemand]: 137/219 looper letters, 9578 selfloop transitions, 3485 changer transitions 5544/18660 dead transitions. [2022-12-06 18:50:09,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1526 places, 18660 transitions, 328619 flow [2022-12-06 18:50:09,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 327 states. [2022-12-06 18:50:09,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2022-12-06 18:50:10,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 22098 transitions. [2022-12-06 18:50:10,056 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.30857525868208285 [2022-12-06 18:50:10,057 INFO L294 CegarLoopForPetriNet]: 195 programPoint places, 1331 predicate places. [2022-12-06 18:50:10,057 INFO L495 AbstractCegarLoop]: Abstraction has has 1526 places, 18660 transitions, 328619 flow [2022-12-06 18:50:10,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 61.351851851851855) internal successors, (3313), 54 states have internal predecessors, (3313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:50:10,058 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:50:10,058 INFO L213 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] [2022-12-06 18:50:10,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-06 18:50:10,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-06 18:50:10,259 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:50:10,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:50:10,260 INFO L85 PathProgramCache]: Analyzing trace with hash 849255335, now seen corresponding path program 5 times [2022-12-06 18:50:10,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:50:10,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657358652] [2022-12-06 18:50:10,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:50:10,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:50:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:50:10,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 18:50:10,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:50:10,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657358652] [2022-12-06 18:50:10,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657358652] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:50:10,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825472239] [2022-12-06 18:50:10,981 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-06 18:50:10,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:50:10,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:50:10,984 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 18:50:11,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-06 18:50:11,118 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 18:50:11,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:50:11,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 37 conjunts are in the unsatisfiable core [2022-12-06 18:50:11,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:50:11,907 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-06 18:50:11,910 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:50:11,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2022-12-06 18:50:12,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:50:12,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:50:12,243 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-12-06 18:50:12,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-12-06 18:50:12,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:50:12,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825472239] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:50:12,964 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:50:12,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 23, 18] total 40 [2022-12-06 18:50:12,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887504117] [2022-12-06 18:50:12,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:50:12,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-12-06 18:50:12,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:50:12,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-12-06 18:50:12,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1406, Unknown=0, NotChecked=0, Total=1560 [2022-12-06 18:50:12,968 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 219 [2022-12-06 18:50:12,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1526 places, 18660 transitions, 328619 flow. Second operand has 40 states, 40 states have (on average 69.475) internal successors, (2779), 40 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:50:12,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:50:12,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 219 [2022-12-06 18:50:12,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-06 18:54:12,969 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 [2022-12-06 18:54:12,969 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-06 18:54:13,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 322 states. [2022-12-06 18:54:13,309 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-06 18:54:13,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-06 18:54:13,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-06 18:54:13,510 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (40states, 64/219 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 972981 conditions, 127320 events (62246/127319 cut-off events. For 1041827/1054265 co-relation queries the response was YES. Maximal size of possible extension queue 3398. Compared 1527688 event pairs, 1197 based on Foata normal form. 1215/120335 useless extension candidates. Maximal degree in co-relation 640713. Up to 43142 conditions per place.). [2022-12-06 18:54:13,511 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-06 18:54:13,511 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-06 18:54:13,512 INFO L458 BasicCegarLoop]: Path program histogram: [7, 5, 2, 1, 1] [2022-12-06 18:54:13,515 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 18:54:13,515 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 18:54:13,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:54:13 BasicIcfg [2022-12-06 18:54:13,519 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 18:54:13,519 INFO L158 Benchmark]: Toolchain (without parser) took 719981.83ms. Allocated memory was 189.8MB in the beginning and 3.5GB in the end (delta: 3.3GB). Free memory was 166.3MB in the beginning and 669.3MB in the end (delta: -503.0MB). Peak memory consumption was 3.2GB. Max. memory is 8.0GB. [2022-12-06 18:54:13,520 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 189.8MB. Free memory was 167.6MB in the beginning and 167.5MB in the end (delta: 67.0kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 18:54:13,520 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.53ms. Allocated memory is still 189.8MB. Free memory was 166.3MB in the beginning and 154.2MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-12-06 18:54:13,520 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.15ms. Allocated memory is still 189.8MB. Free memory was 154.2MB in the beginning and 152.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 18:54:13,520 INFO L158 Benchmark]: Boogie Preprocessor took 38.22ms. Allocated memory is still 189.8MB. Free memory was 152.1MB in the beginning and 150.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 18:54:13,520 INFO L158 Benchmark]: RCFGBuilder took 502.70ms. Allocated memory is still 189.8MB. Free memory was 150.6MB in the beginning and 131.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-12-06 18:54:13,521 INFO L158 Benchmark]: TraceAbstraction took 719120.79ms. Allocated memory was 189.8MB in the beginning and 3.5GB in the end (delta: 3.3GB). Free memory was 131.2MB in the beginning and 669.3MB in the end (delta: -538.1MB). Peak memory consumption was 3.1GB. Max. memory is 8.0GB. [2022-12-06 18:54:13,522 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 189.8MB. Free memory was 167.6MB in the beginning and 167.5MB in the end (delta: 67.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 255.53ms. Allocated memory is still 189.8MB. Free memory was 166.3MB in the beginning and 154.2MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 59.15ms. Allocated memory is still 189.8MB. Free memory was 154.2MB in the beginning and 152.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.22ms. Allocated memory is still 189.8MB. Free memory was 152.1MB in the beginning and 150.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 502.70ms. Allocated memory is still 189.8MB. Free memory was 150.6MB in the beginning and 131.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 719120.79ms. Allocated memory was 189.8MB in the beginning and 3.5GB in the end (delta: 3.3GB). Free memory was 131.2MB in the beginning and 669.3MB in the end (delta: -538.1MB). Peak memory consumption was 3.1GB. 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 enhancing Floyd-Hoare automaton (40states, 64/219 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 972981 conditions, 127320 events (62246/127319 cut-off events. For 1041827/1054265 co-relation queries the response was YES. Maximal size of possible extension queue 3398. Compared 1527688 event pairs, 1197 based on Foata normal form. 1215/120335 useless extension candidates. Maximal degree in co-relation 640713. Up to 43142 conditions per place.). - 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 enhancing Floyd-Hoare automaton (40states, 64/219 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 972981 conditions, 127320 events (62246/127319 cut-off events. For 1041827/1054265 co-relation queries the response was YES. Maximal size of possible extension queue 3398. Compared 1527688 event pairs, 1197 based on Foata normal form. 1215/120335 useless extension candidates. Maximal degree in co-relation 640713. Up to 43142 conditions per place.). - 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 enhancing Floyd-Hoare automaton (40states, 64/219 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 972981 conditions, 127320 events (62246/127319 cut-off events. For 1041827/1054265 co-relation queries the response was YES. Maximal size of possible extension queue 3398. Compared 1527688 event pairs, 1197 based on Foata normal form. 1215/120335 useless extension candidates. Maximal degree in co-relation 640713. Up to 43142 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 310 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 719.0s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 699.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 31 mSolverCounterUnknown, 38088 SdHoareTripleChecker+Valid, 31.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 38088 mSDsluCounter, 44177 SdHoareTripleChecker+Invalid, 27.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 9973 IncrementalHoareTripleChecker+Unchecked, 41915 mSDsCounter, 1771 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 52113 IncrementalHoareTripleChecker+Invalid, 63888 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1771 mSolverCounterUnsat, 2262 mSDtfsCounter, 52113 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3084 GetRequests, 1242 SyntacticMatches, 15 SemanticMatches, 1827 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 269369 ImplicationChecksByTransitivity, 100.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=328619occurred in iteration=15, InterpolantAutomatonStates: 1346, 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, 0.7s SatisfiabilityAnalysisTime, 16.2s InterpolantComputationTime, 2458 NumberOfCodeBlocks, 2458 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 3046 ConstructedInterpolants, 182 QuantifiedInterpolants, 23449 SizeOfPredicates, 154 NumberOfNonLiveVariables, 1565 ConjunctsInSsa, 227 ConjunctsInUnsatCore, 27 InterpolantComputations, 11 PerfectInterpolantSequences, 6/32 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