/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-multiply-verify.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 02:08:52,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 02:08:52,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 02:08:52,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 02:08:52,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 02:08:52,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 02:08:52,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 02:08:52,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 02:08:52,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 02:08:52,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 02:08:52,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 02:08:52,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 02:08:52,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 02:08:52,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 02:08:52,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 02:08:52,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 02:08:52,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 02:08:52,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 02:08:52,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 02:08:52,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 02:08:52,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 02:08:52,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 02:08:52,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 02:08:52,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 02:08:52,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 02:08:52,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 02:08:52,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 02:08:52,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 02:08:52,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 02:08:52,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 02:08:52,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 02:08:52,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 02:08:52,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 02:08:52,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 02:08:52,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 02:08:52,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 02:08:52,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 02:08:52,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 02:08:52,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 02:08:52,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 02:08:52,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 02:08:52,455 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 [2022-01-19 02:08:52,471 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 02:08:52,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 02:08:52,472 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 02:08:52,472 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 02:08:52,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 02:08:52,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 02:08:52,473 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 02:08:52,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 02:08:52,473 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 02:08:52,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 02:08:52,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 02:08:52,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 02:08:52,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 02:08:52,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 02:08:52,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 02:08:52,474 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 02:08:52,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 02:08:52,474 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 02:08:52,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 02:08:52,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 02:08:52,474 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 02:08:52,474 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 02:08:52,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 02:08:52,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 02:08:52,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 02:08:52,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 02:08:52,475 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 02:08:52,475 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 02:08:52,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 02:08:52,475 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 02:08:52,475 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 02:08:52,475 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 02:08:52,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 02:08:52,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 02:08:52,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 02:08:52,676 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 02:08:52,677 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 02:08:52,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-multiply-verify.wvr.c [2022-01-19 02:08:52,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b1912cf9/4919e17fc0c1448c828b1e041285a42d/FLAGc338a9811 [2022-01-19 02:08:53,016 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 02:08:53,017 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-multiply-verify.wvr.c [2022-01-19 02:08:53,023 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b1912cf9/4919e17fc0c1448c828b1e041285a42d/FLAGc338a9811 [2022-01-19 02:08:53,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b1912cf9/4919e17fc0c1448c828b1e041285a42d [2022-01-19 02:08:53,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 02:08:53,441 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 02:08:53,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 02:08:53,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 02:08:53,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 02:08:53,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 02:08:53" (1/1) ... [2022-01-19 02:08:53,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7657f0fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:08:53, skipping insertion in model container [2022-01-19 02:08:53,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 02:08:53" (1/1) ... [2022-01-19 02:08:53,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 02:08:53,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 02:08:53,631 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-multiply-verify.wvr.c[3042,3055] [2022-01-19 02:08:53,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 02:08:53,644 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 02:08:53,674 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-multiply-verify.wvr.c[3042,3055] [2022-01-19 02:08:53,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 02:08:53,688 INFO L208 MainTranslator]: Completed translation [2022-01-19 02:08:53,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:08:53 WrapperNode [2022-01-19 02:08:53,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 02:08:53,691 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 02:08:53,691 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 02:08:53,691 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 02:08:53,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:08:53" (1/1) ... [2022-01-19 02:08:53,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:08:53" (1/1) ... [2022-01-19 02:08:53,733 INFO L137 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 179 [2022-01-19 02:08:53,733 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 02:08:53,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 02:08:53,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 02:08:53,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 02:08:53,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:08:53" (1/1) ... [2022-01-19 02:08:53,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:08:53" (1/1) ... [2022-01-19 02:08:53,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:08:53" (1/1) ... [2022-01-19 02:08:53,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:08:53" (1/1) ... [2022-01-19 02:08:53,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:08:53" (1/1) ... [2022-01-19 02:08:53,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:08:53" (1/1) ... [2022-01-19 02:08:53,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:08:53" (1/1) ... [2022-01-19 02:08:53,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 02:08:53,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 02:08:53,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 02:08:53,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 02:08:53,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:08:53" (1/1) ... [2022-01-19 02:08:53,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 02:08:53,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:08:53,795 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) [2022-01-19 02:08:53,814 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 [2022-01-19 02:08:53,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 02:08:53,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 02:08:53,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 02:08:53,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 02:08:53,825 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 02:08:53,825 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 02:08:53,825 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 02:08:53,825 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 02:08:53,825 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 02:08:53,825 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 02:08:53,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 02:08:53,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 02:08:53,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 02:08:53,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-19 02:08:53,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 02:08:53,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 02:08:53,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 02:08:53,827 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 02:08:53,923 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 02:08:53,937 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 02:08:54,115 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 02:08:54,196 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 02:08:54,197 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-19 02:08:54,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 02:08:54 BoogieIcfgContainer [2022-01-19 02:08:54,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 02:08:54,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 02:08:54,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 02:08:54,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 02:08:54,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 02:08:53" (1/3) ... [2022-01-19 02:08:54,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b391211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 02:08:54, skipping insertion in model container [2022-01-19 02:08:54,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:08:53" (2/3) ... [2022-01-19 02:08:54,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b391211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 02:08:54, skipping insertion in model container [2022-01-19 02:08:54,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 02:08:54" (3/3) ... [2022-01-19 02:08:54,208 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-multiply-verify.wvr.c [2022-01-19 02:08:54,211 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 02:08:54,211 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 02:08:54,211 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 02:08:54,244 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,245 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,245 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,245 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,245 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,245 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,245 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,246 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,246 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,246 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,246 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,246 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,246 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,247 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,247 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,247 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,247 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,247 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,247 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,247 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,248 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,248 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,248 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,248 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,248 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,248 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,248 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,248 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,248 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,248 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,248 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,249 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,249 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,249 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,249 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,249 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,249 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~x~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,249 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~x~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,249 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,249 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,250 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,250 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,250 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,250 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,251 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~x~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,251 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,251 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,251 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,251 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,251 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~x~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,251 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,251 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,251 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,252 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,252 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~x~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,252 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~x~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,252 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~x~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,252 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~x~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,252 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,252 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,252 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,253 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,253 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,253 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,253 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,253 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,253 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,253 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,253 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,253 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,253 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,254 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,254 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,254 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,259 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,260 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,260 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,260 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,260 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,260 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,260 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,261 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,261 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,261 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,261 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,261 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,261 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,261 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,261 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,262 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,262 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,262 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,263 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,264 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,264 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,264 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,264 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,264 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,264 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,264 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~x~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,264 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,265 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,265 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,265 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,265 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,265 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,265 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,266 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,266 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,266 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,266 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,266 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,266 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,266 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,266 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,266 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:54,269 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-19 02:08:54,298 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 02:08:54,302 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 02:08:54,302 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 02:08:54,309 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 155 places, 154 transitions, 332 flow [2022-01-19 02:08:54,352 INFO L129 PetriNetUnfolder]: 9/151 cut-off events. [2022-01-19 02:08:54,352 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 02:08:54,355 INFO L84 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 151 events. 9/151 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 87 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 115. Up to 2 conditions per place. [2022-01-19 02:08:54,355 INFO L82 GeneralOperation]: Start removeDead. Operand has 155 places, 154 transitions, 332 flow [2022-01-19 02:08:54,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 140 transitions, 298 flow [2022-01-19 02:08:54,379 INFO L129 PetriNetUnfolder]: 9/139 cut-off events. [2022-01-19 02:08:54,379 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 02:08:54,379 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:08:54,380 INFO L254 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] [2022-01-19 02:08:54,380 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:08:54,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:08:54,383 INFO L85 PathProgramCache]: Analyzing trace with hash 434015461, now seen corresponding path program 1 times [2022-01-19 02:08:54,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:08:54,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532774110] [2022-01-19 02:08:54,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:08:54,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:08:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:08:54,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:08:54,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:08:54,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532774110] [2022-01-19 02:08:54,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532774110] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:08:54,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:08:54,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 02:08:54,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943669970] [2022-01-19 02:08:54,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:08:54,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 02:08:54,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:08:54,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 02:08:54,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 02:08:54,595 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 154 [2022-01-19 02:08:54,603 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 140 transitions, 298 flow. Second operand has 2 states, 2 states have (on average 144.0) internal successors, (288), 2 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:54,603 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:08:54,603 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 154 [2022-01-19 02:08:54,604 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:08:54,663 INFO L129 PetriNetUnfolder]: 18/215 cut-off events. [2022-01-19 02:08:54,663 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-01-19 02:08:54,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 215 events. 18/215 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 458 event pairs, 15 based on Foata normal form. 19/223 useless extension candidates. Maximal degree in co-relation 150. Up to 37 conditions per place. [2022-01-19 02:08:54,667 INFO L132 encePairwiseOnDemand]: 148/154 looper letters, 9 selfloop transitions, 0 changer transitions 3/134 dead transitions. [2022-01-19 02:08:54,667 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 134 transitions, 304 flow [2022-01-19 02:08:54,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 02:08:54,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 02:08:54,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 291 transitions. [2022-01-19 02:08:54,680 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9448051948051948 [2022-01-19 02:08:54,680 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 291 transitions. [2022-01-19 02:08:54,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 291 transitions. [2022-01-19 02:08:54,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:08:54,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 291 transitions. [2022-01-19 02:08:54,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 145.5) internal successors, (291), 2 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:54,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:54,696 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:54,697 INFO L186 Difference]: Start difference. First operand has 141 places, 140 transitions, 298 flow. Second operand 2 states and 291 transitions. [2022-01-19 02:08:54,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 134 transitions, 304 flow [2022-01-19 02:08:54,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 134 transitions, 292 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-19 02:08:54,704 INFO L242 Difference]: Finished difference. Result has 136 places, 131 transitions, 268 flow [2022-01-19 02:08:54,705 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=268, PETRI_PLACES=136, PETRI_TRANSITIONS=131} [2022-01-19 02:08:54,709 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, -5 predicate places. [2022-01-19 02:08:54,709 INFO L470 AbstractCegarLoop]: Abstraction has has 136 places, 131 transitions, 268 flow [2022-01-19 02:08:54,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 144.0) internal successors, (288), 2 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:54,710 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:08:54,710 INFO L254 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] [2022-01-19 02:08:54,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 02:08:54,711 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:08:54,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:08:54,711 INFO L85 PathProgramCache]: Analyzing trace with hash -749841678, now seen corresponding path program 1 times [2022-01-19 02:08:54,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:08:54,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785966448] [2022-01-19 02:08:54,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:08:54,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:08:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:08:54,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:08:54,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:08:54,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785966448] [2022-01-19 02:08:54,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785966448] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:08:54,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:08:54,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 02:08:54,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786451194] [2022-01-19 02:08:54,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:08:54,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 02:08:54,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:08:54,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 02:08:54,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-19 02:08:54,884 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 154 [2022-01-19 02:08:54,885 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 131 transitions, 268 flow. Second operand has 6 states, 6 states have (on average 127.16666666666667) internal successors, (763), 6 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:54,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:08:54,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 154 [2022-01-19 02:08:54,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:08:55,008 INFO L129 PetriNetUnfolder]: 20/259 cut-off events. [2022-01-19 02:08:55,009 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-01-19 02:08:55,012 INFO L84 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 259 events. 20/259 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 618 event pairs, 15 based on Foata normal form. 6/254 useless extension candidates. Maximal degree in co-relation 327. Up to 46 conditions per place. [2022-01-19 02:08:55,013 INFO L132 encePairwiseOnDemand]: 144/154 looper letters, 21 selfloop transitions, 6 changer transitions 4/139 dead transitions. [2022-01-19 02:08:55,013 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 139 transitions, 349 flow [2022-01-19 02:08:55,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 02:08:55,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 02:08:55,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 902 transitions. [2022-01-19 02:08:55,017 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8367346938775511 [2022-01-19 02:08:55,018 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 902 transitions. [2022-01-19 02:08:55,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 902 transitions. [2022-01-19 02:08:55,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:08:55,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 902 transitions. [2022-01-19 02:08:55,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 128.85714285714286) internal successors, (902), 7 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:55,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 154.0) internal successors, (1232), 8 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:55,030 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 154.0) internal successors, (1232), 8 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:55,030 INFO L186 Difference]: Start difference. First operand has 136 places, 131 transitions, 268 flow. Second operand 7 states and 902 transitions. [2022-01-19 02:08:55,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 139 transitions, 349 flow [2022-01-19 02:08:55,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 139 transitions, 349 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 02:08:55,036 INFO L242 Difference]: Finished difference. Result has 141 places, 132 transitions, 294 flow [2022-01-19 02:08:55,036 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=294, PETRI_PLACES=141, PETRI_TRANSITIONS=132} [2022-01-19 02:08:55,037 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 0 predicate places. [2022-01-19 02:08:55,037 INFO L470 AbstractCegarLoop]: Abstraction has has 141 places, 132 transitions, 294 flow [2022-01-19 02:08:55,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.16666666666667) internal successors, (763), 6 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:55,037 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:08:55,038 INFO L254 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] [2022-01-19 02:08:55,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 02:08:55,038 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:08:55,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:08:55,039 INFO L85 PathProgramCache]: Analyzing trace with hash 370033410, now seen corresponding path program 1 times [2022-01-19 02:08:55,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:08:55,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387064462] [2022-01-19 02:08:55,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:08:55,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:08:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:08:55,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:08:55,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:08:55,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387064462] [2022-01-19 02:08:55,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387064462] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:08:55,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705879246] [2022-01-19 02:08:55,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:08:55,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:08:55,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:08:55,169 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) [2022-01-19 02:08:55,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-19 02:08:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:08:55,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-19 02:08:55,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:08:55,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:08:55,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:08:55,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:08:55,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705879246] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:08:55,996 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:08:55,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 18 [2022-01-19 02:08:55,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198658728] [2022-01-19 02:08:55,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:08:55,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 02:08:55,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:08:55,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 02:08:55,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-01-19 02:08:56,000 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 154 [2022-01-19 02:08:56,002 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 132 transitions, 294 flow. Second operand has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:56,002 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:08:56,002 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 154 [2022-01-19 02:08:56,002 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:08:56,193 INFO L129 PetriNetUnfolder]: 24/300 cut-off events. [2022-01-19 02:08:56,193 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-01-19 02:08:56,194 INFO L84 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 300 events. 24/300 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 855 event pairs, 15 based on Foata normal form. 9/299 useless extension candidates. Maximal degree in co-relation 426. Up to 44 conditions per place. [2022-01-19 02:08:56,194 INFO L132 encePairwiseOnDemand]: 140/154 looper letters, 23 selfloop transitions, 12 changer transitions 9/149 dead transitions. [2022-01-19 02:08:56,194 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 149 transitions, 430 flow [2022-01-19 02:08:56,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 02:08:56,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 02:08:56,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1621 transitions. [2022-01-19 02:08:56,197 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8096903096903096 [2022-01-19 02:08:56,197 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1621 transitions. [2022-01-19 02:08:56,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1621 transitions. [2022-01-19 02:08:56,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:08:56,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1621 transitions. [2022-01-19 02:08:56,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 124.6923076923077) internal successors, (1621), 13 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:56,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 154.0) internal successors, (2156), 14 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:56,204 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 154.0) internal successors, (2156), 14 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:56,204 INFO L186 Difference]: Start difference. First operand has 141 places, 132 transitions, 294 flow. Second operand 13 states and 1621 transitions. [2022-01-19 02:08:56,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 149 transitions, 430 flow [2022-01-19 02:08:56,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 149 transitions, 420 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 02:08:56,207 INFO L242 Difference]: Finished difference. Result has 154 places, 136 transitions, 349 flow [2022-01-19 02:08:56,207 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=349, PETRI_PLACES=154, PETRI_TRANSITIONS=136} [2022-01-19 02:08:56,208 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 13 predicate places. [2022-01-19 02:08:56,208 INFO L470 AbstractCegarLoop]: Abstraction has has 154 places, 136 transitions, 349 flow [2022-01-19 02:08:56,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:56,209 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:08:56,209 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:08:56,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-19 02:08:56,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:08:56,420 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:08:56,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:08:56,420 INFO L85 PathProgramCache]: Analyzing trace with hash -542727054, now seen corresponding path program 2 times [2022-01-19 02:08:56,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:08:56,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757940398] [2022-01-19 02:08:56,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:08:56,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:08:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:08:58,579 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:08:58,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:08:58,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757940398] [2022-01-19 02:08:58,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757940398] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:08:58,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212172800] [2022-01-19 02:08:58,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 02:08:58,580 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:08:58,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:08:58,596 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) [2022-01-19 02:08:58,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-19 02:08:58,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-19 02:08:58,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:08:58,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-19 02:08:58,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:08:59,162 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-19 02:08:59,163 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 17 [2022-01-19 02:08:59,260 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 02:08:59,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 02:08:59,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212172800] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:08:59,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 02:08:59,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [35] total 43 [2022-01-19 02:08:59,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367467783] [2022-01-19 02:08:59,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:08:59,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-19 02:08:59,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:08:59,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-19 02:08:59,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1683, Unknown=0, NotChecked=0, Total=1806 [2022-01-19 02:08:59,264 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 154 [2022-01-19 02:08:59,265 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 136 transitions, 349 flow. Second operand has 12 states, 12 states have (on average 101.66666666666667) internal successors, (1220), 12 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:59,265 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:08:59,265 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 154 [2022-01-19 02:08:59,265 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:08:59,771 INFO L129 PetriNetUnfolder]: 454/1130 cut-off events. [2022-01-19 02:08:59,771 INFO L130 PetriNetUnfolder]: For 973/1027 co-relation queries the response was YES. [2022-01-19 02:08:59,773 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2456 conditions, 1130 events. 454/1130 cut-off events. For 973/1027 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 6256 event pairs, 159 based on Foata normal form. 31/1095 useless extension candidates. Maximal degree in co-relation 2444. Up to 531 conditions per place. [2022-01-19 02:08:59,777 INFO L132 encePairwiseOnDemand]: 138/154 looper letters, 66 selfloop transitions, 17 changer transitions 36/209 dead transitions. [2022-01-19 02:08:59,777 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 209 transitions, 805 flow [2022-01-19 02:08:59,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 02:08:59,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 02:08:59,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1398 transitions. [2022-01-19 02:08:59,783 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6983016983016983 [2022-01-19 02:08:59,783 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1398 transitions. [2022-01-19 02:08:59,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1398 transitions. [2022-01-19 02:08:59,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:08:59,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1398 transitions. [2022-01-19 02:08:59,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 107.53846153846153) internal successors, (1398), 13 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:59,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 154.0) internal successors, (2156), 14 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:59,788 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 154.0) internal successors, (2156), 14 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:59,788 INFO L186 Difference]: Start difference. First operand has 154 places, 136 transitions, 349 flow. Second operand 13 states and 1398 transitions. [2022-01-19 02:08:59,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 209 transitions, 805 flow [2022-01-19 02:08:59,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 209 transitions, 742 flow, removed 26 selfloop flow, removed 7 redundant places. [2022-01-19 02:08:59,793 INFO L242 Difference]: Finished difference. Result has 168 places, 153 transitions, 472 flow [2022-01-19 02:08:59,793 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=472, PETRI_PLACES=168, PETRI_TRANSITIONS=153} [2022-01-19 02:08:59,793 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 27 predicate places. [2022-01-19 02:08:59,793 INFO L470 AbstractCegarLoop]: Abstraction has has 168 places, 153 transitions, 472 flow [2022-01-19 02:08:59,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 101.66666666666667) internal successors, (1220), 12 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:59,794 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:08:59,794 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:08:59,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-19 02:09:00,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-19 02:09:00,007 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:09:00,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:09:00,008 INFO L85 PathProgramCache]: Analyzing trace with hash -17723278, now seen corresponding path program 3 times [2022-01-19 02:09:00,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:09:00,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876528101] [2022-01-19 02:09:00,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:09:00,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:09:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:09:00,717 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:09:00,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:09:00,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876528101] [2022-01-19 02:09:00,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876528101] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:09:00,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086684060] [2022-01-19 02:09:00,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 02:09:00,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:09:00,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:09:00,721 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) [2022-01-19 02:09:00,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-19 02:09:00,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-01-19 02:09:00,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:09:00,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-19 02:09:00,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:09:01,274 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-19 02:09:01,275 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 17 [2022-01-19 02:09:01,342 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 02:09:01,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 02:09:01,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086684060] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:09:01,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 02:09:01,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [26] total 34 [2022-01-19 02:09:01,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857368110] [2022-01-19 02:09:01,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:09:01,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-19 02:09:01,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:09:01,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-19 02:09:01,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1024, Unknown=0, NotChecked=0, Total=1122 [2022-01-19 02:09:01,345 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 154 [2022-01-19 02:09:01,346 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 153 transitions, 472 flow. Second operand has 12 states, 12 states have (on average 101.66666666666667) internal successors, (1220), 12 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:09:01,346 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:09:01,346 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 154 [2022-01-19 02:09:01,346 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:09:01,896 INFO L129 PetriNetUnfolder]: 561/1325 cut-off events. [2022-01-19 02:09:01,897 INFO L130 PetriNetUnfolder]: For 1644/1709 co-relation queries the response was YES. [2022-01-19 02:09:01,901 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3428 conditions, 1325 events. 561/1325 cut-off events. For 1644/1709 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 7381 event pairs, 157 based on Foata normal form. 43/1296 useless extension candidates. Maximal degree in co-relation 3407. Up to 634 conditions per place. [2022-01-19 02:09:01,907 INFO L132 encePairwiseOnDemand]: 137/154 looper letters, 77 selfloop transitions, 25 changer transitions 36/228 dead transitions. [2022-01-19 02:09:01,907 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 228 transitions, 1015 flow [2022-01-19 02:09:01,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 02:09:01,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 02:09:01,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1398 transitions. [2022-01-19 02:09:01,911 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6983016983016983 [2022-01-19 02:09:01,911 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1398 transitions. [2022-01-19 02:09:01,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1398 transitions. [2022-01-19 02:09:01,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:09:01,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1398 transitions. [2022-01-19 02:09:01,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 107.53846153846153) internal successors, (1398), 13 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:09:01,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 154.0) internal successors, (2156), 14 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:09:01,917 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 154.0) internal successors, (2156), 14 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:09:01,918 INFO L186 Difference]: Start difference. First operand has 168 places, 153 transitions, 472 flow. Second operand 13 states and 1398 transitions. [2022-01-19 02:09:01,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 228 transitions, 1015 flow [2022-01-19 02:09:01,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 228 transitions, 969 flow, removed 23 selfloop flow, removed 6 redundant places. [2022-01-19 02:09:01,924 INFO L242 Difference]: Finished difference. Result has 179 places, 168 transitions, 641 flow [2022-01-19 02:09:01,924 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=641, PETRI_PLACES=179, PETRI_TRANSITIONS=168} [2022-01-19 02:09:01,925 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 38 predicate places. [2022-01-19 02:09:01,925 INFO L470 AbstractCegarLoop]: Abstraction has has 179 places, 168 transitions, 641 flow [2022-01-19 02:09:01,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 101.66666666666667) internal successors, (1220), 12 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:09:01,926 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:09:01,926 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:09:01,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-19 02:09:02,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:09:02,143 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:09:02,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:09:02,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1021058128, now seen corresponding path program 4 times [2022-01-19 02:09:02,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:09:02,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470779583] [2022-01-19 02:09:02,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:09:02,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:09:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:09:03,364 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:09:03,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:09:03,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470779583] [2022-01-19 02:09:03,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470779583] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:09:03,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654418994] [2022-01-19 02:09:03,365 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 02:09:03,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:09:03,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:09:03,366 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) [2022-01-19 02:09:03,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-19 02:09:03,449 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 02:09:03,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:09:03,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 51 conjunts are in the unsatisfiable core [2022-01-19 02:09:03,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:09:04,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 02:09:04,445 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 23 [2022-01-19 02:09:04,766 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-19 02:09:04,766 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 17 [2022-01-19 02:09:04,881 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:09:04,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:09:05,639 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-19 02:09:05,639 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 154 treesize of output 155 [2022-01-19 02:09:05,674 INFO L353 Elim1Store]: treesize reduction 26, result has 50.9 percent of original size [2022-01-19 02:09:05,674 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 68 [2022-01-19 02:09:09,832 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:09:09,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654418994] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:09:09,832 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:09:09,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 28, 28] total 80 [2022-01-19 02:09:09,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058514103] [2022-01-19 02:09:09,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:09:09,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-01-19 02:09:09,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:09:09,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-01-19 02:09:09,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=5994, Unknown=1, NotChecked=0, Total=6320 [2022-01-19 02:09:09,837 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 154 [2022-01-19 02:09:09,841 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 168 transitions, 641 flow. Second operand has 80 states, 80 states have (on average 71.35) internal successors, (5708), 80 states have internal predecessors, (5708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:09:09,841 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:09:09,841 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 154 [2022-01-19 02:09:09,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:09:19,858 INFO L129 PetriNetUnfolder]: 2116/4906 cut-off events. [2022-01-19 02:09:19,859 INFO L130 PetriNetUnfolder]: For 11825/11979 co-relation queries the response was YES. [2022-01-19 02:09:19,871 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14885 conditions, 4906 events. 2116/4906 cut-off events. For 11825/11979 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 38993 event pairs, 413 based on Foata normal form. 85/4780 useless extension candidates. Maximal degree in co-relation 14858. Up to 984 conditions per place. [2022-01-19 02:09:19,889 INFO L132 encePairwiseOnDemand]: 115/154 looper letters, 293 selfloop transitions, 135 changer transitions 86/576 dead transitions. [2022-01-19 02:09:19,889 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 576 transitions, 3760 flow [2022-01-19 02:09:19,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-19 02:09:19,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2022-01-19 02:09:19,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 4848 transitions. [2022-01-19 02:09:19,898 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.49188311688311687 [2022-01-19 02:09:19,898 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 4848 transitions. [2022-01-19 02:09:19,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 4848 transitions. [2022-01-19 02:09:19,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:09:19,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 4848 transitions. [2022-01-19 02:09:19,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 75.75) internal successors, (4848), 64 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:09:19,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 154.0) internal successors, (10010), 65 states have internal predecessors, (10010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:09:19,918 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 154.0) internal successors, (10010), 65 states have internal predecessors, (10010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:09:19,918 INFO L186 Difference]: Start difference. First operand has 179 places, 168 transitions, 641 flow. Second operand 64 states and 4848 transitions. [2022-01-19 02:09:19,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 576 transitions, 3760 flow [2022-01-19 02:09:19,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 576 transitions, 3562 flow, removed 99 selfloop flow, removed 6 redundant places. [2022-01-19 02:09:19,942 INFO L242 Difference]: Finished difference. Result has 265 places, 279 transitions, 1997 flow [2022-01-19 02:09:19,942 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=1997, PETRI_PLACES=265, PETRI_TRANSITIONS=279} [2022-01-19 02:09:19,944 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 124 predicate places. [2022-01-19 02:09:19,944 INFO L470 AbstractCegarLoop]: Abstraction has has 265 places, 279 transitions, 1997 flow [2022-01-19 02:09:19,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 71.35) internal successors, (5708), 80 states have internal predecessors, (5708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:09:19,945 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:09:19,946 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:09:19,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-19 02:09:20,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:09:20,162 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:09:20,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:09:20,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1636682430, now seen corresponding path program 5 times [2022-01-19 02:09:20,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:09:20,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266683212] [2022-01-19 02:09:20,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:09:20,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:09:20,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:09:22,116 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:09:22,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:09:22,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266683212] [2022-01-19 02:09:22,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266683212] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:09:22,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467649675] [2022-01-19 02:09:22,117 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-19 02:09:22,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:09:22,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:09:22,118 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) [2022-01-19 02:09:22,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-19 02:09:22,197 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-19 02:09:22,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:09:22,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 64 conjunts are in the unsatisfiable core [2022-01-19 02:09:22,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:09:23,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 02:09:23,536 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 34 treesize of output 34 [2022-01-19 02:09:23,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 02:09:23,785 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:09:23,785 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 17 [2022-01-19 02:09:23,906 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:09:23,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:09:24,858 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-19 02:09:24,859 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 235 treesize of output 202 [2022-01-19 02:09:24,870 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-19 02:09:24,870 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 135 treesize of output 109 [2022-01-19 02:09:24,876 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-19 02:09:24,876 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 109 treesize of output 83 [2022-01-19 02:09:27,083 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:09:27,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467649675] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:09:27,084 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:09:27,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 28, 28] total 81 [2022-01-19 02:09:27,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64676891] [2022-01-19 02:09:27,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:09:27,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-01-19 02:09:27,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:09:27,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-01-19 02:09:27,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=400, Invalid=6060, Unknown=20, NotChecked=0, Total=6480 [2022-01-19 02:09:27,089 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 154 [2022-01-19 02:09:27,097 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 279 transitions, 1997 flow. Second operand has 81 states, 81 states have (on average 69.49382716049382) internal successors, (5629), 81 states have internal predecessors, (5629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:09:27,098 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:09:27,098 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 154 [2022-01-19 02:09:27,098 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:09:39,805 INFO L129 PetriNetUnfolder]: 2532/6080 cut-off events. [2022-01-19 02:09:39,805 INFO L130 PetriNetUnfolder]: For 55625/56087 co-relation queries the response was YES. [2022-01-19 02:09:39,831 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26053 conditions, 6080 events. 2532/6080 cut-off events. For 55625/56087 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 52151 event pairs, 634 based on Foata normal form. 179/5983 useless extension candidates. Maximal degree in co-relation 25996. Up to 1381 conditions per place. [2022-01-19 02:09:39,915 INFO L132 encePairwiseOnDemand]: 112/154 looper letters, 288 selfloop transitions, 153 changer transitions 98/599 dead transitions. [2022-01-19 02:09:39,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 599 transitions, 5358 flow [2022-01-19 02:09:39,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-19 02:09:39,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2022-01-19 02:09:39,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 4604 transitions. [2022-01-19 02:09:39,919 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4745413316841888 [2022-01-19 02:09:39,919 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 4604 transitions. [2022-01-19 02:09:39,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 4604 transitions. [2022-01-19 02:09:39,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:09:39,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 4604 transitions. [2022-01-19 02:09:39,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 73.07936507936508) internal successors, (4604), 63 states have internal predecessors, (4604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:09:39,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 154.0) internal successors, (9856), 64 states have internal predecessors, (9856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:09:39,936 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 154.0) internal successors, (9856), 64 states have internal predecessors, (9856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:09:39,936 INFO L186 Difference]: Start difference. First operand has 265 places, 279 transitions, 1997 flow. Second operand 63 states and 4604 transitions. [2022-01-19 02:09:39,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 599 transitions, 5358 flow [2022-01-19 02:09:40,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 599 transitions, 4970 flow, removed 179 selfloop flow, removed 28 redundant places. [2022-01-19 02:09:40,043 INFO L242 Difference]: Finished difference. Result has 316 places, 328 transitions, 2931 flow [2022-01-19 02:09:40,043 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=1809, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=2931, PETRI_PLACES=316, PETRI_TRANSITIONS=328} [2022-01-19 02:09:40,044 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 175 predicate places. [2022-01-19 02:09:40,044 INFO L470 AbstractCegarLoop]: Abstraction has has 316 places, 328 transitions, 2931 flow [2022-01-19 02:09:40,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 69.49382716049382) internal successors, (5629), 81 states have internal predecessors, (5629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:09:40,045 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:09:40,045 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:09:40,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-19 02:09:40,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:09:40,259 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:09:40,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:09:40,260 INFO L85 PathProgramCache]: Analyzing trace with hash 861554898, now seen corresponding path program 6 times [2022-01-19 02:09:40,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:09:40,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552519284] [2022-01-19 02:09:40,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:09:40,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:09:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:09:41,440 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:09:41,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:09:41,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552519284] [2022-01-19 02:09:41,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552519284] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:09:41,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546493259] [2022-01-19 02:09:41,441 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-19 02:09:41,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:09:41,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:09:41,442 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) [2022-01-19 02:09:41,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-19 02:09:41,513 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-01-19 02:09:41,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:09:41,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 44 conjunts are in the unsatisfiable core [2022-01-19 02:09:41,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:09:42,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 02:09:42,169 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 23 [2022-01-19 02:09:42,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 02:09:42,257 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 23 [2022-01-19 02:09:42,523 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-19 02:09:42,524 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 17 [2022-01-19 02:09:42,629 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 02:09:42,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 02:09:42,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546493259] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:09:42,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 02:09:42,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [34] total 51 [2022-01-19 02:09:42,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567957329] [2022-01-19 02:09:42,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:09:42,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-19 02:09:42,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:09:42,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-19 02:09:42,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=2404, Unknown=0, NotChecked=0, Total=2550 [2022-01-19 02:09:42,632 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 154 [2022-01-19 02:09:42,633 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 328 transitions, 2931 flow. Second operand has 21 states, 21 states have (on average 83.71428571428571) internal successors, (1758), 21 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:09:42,633 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:09:42,633 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 154 [2022-01-19 02:09:42,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:09:44,759 INFO L129 PetriNetUnfolder]: 2425/5901 cut-off events. [2022-01-19 02:09:44,760 INFO L130 PetriNetUnfolder]: For 68054/68512 co-relation queries the response was YES. [2022-01-19 02:09:44,797 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27151 conditions, 5901 events. 2425/5901 cut-off events. For 68054/68512 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 50232 event pairs, 555 based on Foata normal form. 209/5795 useless extension candidates. Maximal degree in co-relation 27077. Up to 2884 conditions per place. [2022-01-19 02:09:44,823 INFO L132 encePairwiseOnDemand]: 129/154 looper letters, 149 selfloop transitions, 129 changer transitions 38/399 dead transitions. [2022-01-19 02:09:44,823 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 399 transitions, 4181 flow [2022-01-19 02:09:44,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 02:09:44,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 02:09:44,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1919 transitions. [2022-01-19 02:09:44,825 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5664108618654073 [2022-01-19 02:09:44,825 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1919 transitions. [2022-01-19 02:09:44,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1919 transitions. [2022-01-19 02:09:44,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:09:44,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1919 transitions. [2022-01-19 02:09:44,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 87.22727272727273) internal successors, (1919), 22 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:09:44,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 154.0) internal successors, (3542), 23 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:09:44,830 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 154.0) internal successors, (3542), 23 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:09:44,830 INFO L186 Difference]: Start difference. First operand has 316 places, 328 transitions, 2931 flow. Second operand 22 states and 1919 transitions. [2022-01-19 02:09:44,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 399 transitions, 4181 flow [2022-01-19 02:09:44,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 399 transitions, 3974 flow, removed 78 selfloop flow, removed 41 redundant places. [2022-01-19 02:09:44,959 INFO L242 Difference]: Finished difference. Result has 286 places, 335 transitions, 3272 flow [2022-01-19 02:09:44,959 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=2756, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3272, PETRI_PLACES=286, PETRI_TRANSITIONS=335} [2022-01-19 02:09:44,961 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 145 predicate places. [2022-01-19 02:09:44,961 INFO L470 AbstractCegarLoop]: Abstraction has has 286 places, 335 transitions, 3272 flow [2022-01-19 02:09:44,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 83.71428571428571) internal successors, (1758), 21 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:09:44,962 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:09:44,962 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:09:44,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-01-19 02:09:45,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:09:45,179 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:09:45,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:09:45,180 INFO L85 PathProgramCache]: Analyzing trace with hash -2140321802, now seen corresponding path program 7 times [2022-01-19 02:09:45,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:09:45,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960036113] [2022-01-19 02:09:45,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:09:45,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:09:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:09:46,670 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:09:46,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:09:46,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960036113] [2022-01-19 02:09:46,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960036113] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:09:46,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026483827] [2022-01-19 02:09:46,671 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-19 02:09:46,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:09:46,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:09:46,672 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:09:46,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-19 02:09:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:09:46,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-19 02:09:46,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:09:47,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 02:09:47,837 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 22 [2022-01-19 02:09:48,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 02:09:48,289 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 33 treesize of output 33 [2022-01-19 02:09:48,719 INFO L353 Elim1Store]: treesize reduction 93, result has 7.0 percent of original size [2022-01-19 02:09:48,719 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 23 [2022-01-19 02:09:48,835 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:09:48,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:09:49,335 WARN L838 $PredicateComparison]: unable to prove that (or (not (= (mod (select (select |c_#memory_int| c_~queue~0.base) (+ (* c_~end~0 4) c_~queue~0.offset)) 4294967296) (mod |c_thread2Thread1of1ForFork0_~x~1#1| 4294967296))) (not (< (+ c_~start~0 1) c_~n~0)) (not (< c_~end~0 c_~n~0)) (and (forall ((v_ArrVal_282 (Array Int Int))) (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_282) c_~queue~0.base)) (.cse3 (* c_~start~0 4))) (let ((.cse0 (select .cse2 (+ .cse3 c_~queue~0.offset 4))) (.cse1 (select .cse2 (+ .cse3 c_~queue~0.offset)))) (<= (+ .cse0 (* (div .cse1 4294967296) 4294967296)) (+ (* (div .cse0 4294967296) 4294967296) .cse1))))) (forall ((v_ArrVal_282 (Array Int Int))) (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_282) c_~queue~0.base)) (.cse7 (* c_~start~0 4))) (let ((.cse4 (select .cse6 (+ .cse7 c_~queue~0.offset 4))) (.cse5 (select .cse6 (+ .cse7 c_~queue~0.offset)))) (< (+ (* (div .cse4 4294967296) 4294967296) .cse5) (+ .cse4 (* (div .cse5 4294967296) 4294967296) 1)))))) (not (<= 0 c_~start~0)) (not (<= 0 c_~end~0))) is different from false [2022-01-19 02:09:49,391 WARN L838 $PredicateComparison]: unable to prove that (or (not (< (+ c_~start~0 1) c_~n~0)) (not (< c_~end~0 c_~n~0)) (and (forall ((v_ArrVal_282 (Array Int Int))) (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_282) c_~queue~0.base)) (.cse3 (* c_~start~0 4))) (let ((.cse0 (select .cse2 (+ .cse3 c_~queue~0.offset 4))) (.cse1 (select .cse2 (+ .cse3 c_~queue~0.offset)))) (<= (+ .cse0 (* (div .cse1 4294967296) 4294967296)) (+ (* (div .cse0 4294967296) 4294967296) .cse1))))) (forall ((v_ArrVal_282 (Array Int Int))) (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_282) c_~queue~0.base)) (.cse7 (* c_~start~0 4))) (let ((.cse4 (select .cse6 (+ .cse7 c_~queue~0.offset 4))) (.cse5 (select .cse6 (+ .cse7 c_~queue~0.offset)))) (< (+ (* (div .cse4 4294967296) 4294967296) .cse5) (+ .cse4 (* (div .cse5 4294967296) 4294967296) 1)))))) (not (<= 0 c_~start~0)) (not (<= 0 c_~end~0)) (not (= (mod (select (select |c_#memory_int| c_~queue~0.base) (+ (* c_~end~0 4) c_~queue~0.offset)) 4294967296) 0))) is different from false [2022-01-19 02:09:49,719 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-19 02:09:49,720 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 674 treesize of output 608 [2022-01-19 02:09:49,749 INFO L353 Elim1Store]: treesize reduction 24, result has 52.9 percent of original size [2022-01-19 02:09:49,750 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 608 treesize of output 550 [2022-01-19 02:09:49,767 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-19 02:09:49,769 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 441 treesize of output 337 [2022-01-19 02:09:49,783 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-19 02:09:49,783 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 337 treesize of output 285 [2022-01-19 02:09:54,154 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:09:54,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026483827] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:09:54,155 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:09:54,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 30, 30] total 86 [2022-01-19 02:09:54,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342396214] [2022-01-19 02:09:54,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:09:54,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-19 02:09:54,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:09:54,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-19 02:09:54,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=6568, Unknown=3, NotChecked=330, Total=7310 [2022-01-19 02:09:54,159 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 154 [2022-01-19 02:09:54,162 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 335 transitions, 3272 flow. Second operand has 86 states, 86 states have (on average 69.36046511627907) internal successors, (5965), 86 states have internal predecessors, (5965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:09:54,187 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:09:54,187 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 154 [2022-01-19 02:09:54,187 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:10:08,725 INFO L129 PetriNetUnfolder]: 3364/8251 cut-off events. [2022-01-19 02:10:08,725 INFO L130 PetriNetUnfolder]: For 89141/89680 co-relation queries the response was YES. [2022-01-19 02:10:08,761 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37983 conditions, 8251 events. 3364/8251 cut-off events. For 89141/89680 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 75297 event pairs, 330 based on Foata normal form. 129/8010 useless extension candidates. Maximal degree in co-relation 37916. Up to 1401 conditions per place. [2022-01-19 02:10:08,788 INFO L132 encePairwiseOnDemand]: 111/154 looper letters, 345 selfloop transitions, 309 changer transitions 26/740 dead transitions. [2022-01-19 02:10:08,789 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 740 transitions, 8917 flow [2022-01-19 02:10:08,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-19 02:10:08,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2022-01-19 02:10:08,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 4887 transitions. [2022-01-19 02:10:08,793 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.47363830199651097 [2022-01-19 02:10:08,793 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 4887 transitions. [2022-01-19 02:10:08,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 4887 transitions. [2022-01-19 02:10:08,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:10:08,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 4887 transitions. [2022-01-19 02:10:08,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 72.94029850746269) internal successors, (4887), 67 states have internal predecessors, (4887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:10:08,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 154.0) internal successors, (10472), 68 states have internal predecessors, (10472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:10:08,806 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 154.0) internal successors, (10472), 68 states have internal predecessors, (10472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:10:08,806 INFO L186 Difference]: Start difference. First operand has 286 places, 335 transitions, 3272 flow. Second operand 67 states and 4887 transitions. [2022-01-19 02:10:08,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 740 transitions, 8917 flow [2022-01-19 02:10:09,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 740 transitions, 8540 flow, removed 127 selfloop flow, removed 17 redundant places. [2022-01-19 02:10:09,083 INFO L242 Difference]: Finished difference. Result has 358 places, 517 transitions, 6753 flow [2022-01-19 02:10:09,083 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=3119, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=6753, PETRI_PLACES=358, PETRI_TRANSITIONS=517} [2022-01-19 02:10:09,083 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 217 predicate places. [2022-01-19 02:10:09,084 INFO L470 AbstractCegarLoop]: Abstraction has has 358 places, 517 transitions, 6753 flow [2022-01-19 02:10:09,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 69.36046511627907) internal successors, (5965), 86 states have internal predecessors, (5965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:10:09,085 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:10:09,085 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:10:09,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-19 02:10:09,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:10:09,299 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:10:09,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:10:09,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1793862488, now seen corresponding path program 8 times [2022-01-19 02:10:09,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:10:09,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161733417] [2022-01-19 02:10:09,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:10:09,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:10:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:10:10,607 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:10:10,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:10:10,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161733417] [2022-01-19 02:10:10,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161733417] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:10:10,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443839213] [2022-01-19 02:10:10,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 02:10:10,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:10:10,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:10:10,609 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:10:10,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-19 02:10:10,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-19 02:10:10,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:10:10,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 52 conjunts are in the unsatisfiable core [2022-01-19 02:10:10,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:10:10,942 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 02:10:10,978 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-19 02:10:10,979 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-01-19 02:10:11,020 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 02:10:11,020 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-19 02:10:11,683 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-19 02:10:11,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 02:10:11,870 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 22 [2022-01-19 02:10:12,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 02:10:12,079 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 34 treesize of output 34 [2022-01-19 02:10:12,211 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-19 02:10:12,211 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 17 [2022-01-19 02:10:12,336 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 02:10:12,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 02:10:12,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443839213] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:10:12,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 02:10:12,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [34] total 53 [2022-01-19 02:10:12,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009506741] [2022-01-19 02:10:12,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:10:12,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-19 02:10:12,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:10:12,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-19 02:10:12,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=2613, Unknown=0, NotChecked=0, Total=2756 [2022-01-19 02:10:12,339 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 154 [2022-01-19 02:10:12,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 517 transitions, 6753 flow. Second operand has 23 states, 23 states have (on average 78.6086956521739) internal successors, (1808), 23 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:10:12,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:10:12,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 154 [2022-01-19 02:10:12,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:10:15,095 INFO L129 PetriNetUnfolder]: 3352/8280 cut-off events. [2022-01-19 02:10:15,095 INFO L130 PetriNetUnfolder]: For 116046/116891 co-relation queries the response was YES. [2022-01-19 02:10:15,144 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44836 conditions, 8280 events. 3352/8280 cut-off events. For 116046/116891 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 76156 event pairs, 756 based on Foata normal form. 223/8076 useless extension candidates. Maximal degree in co-relation 44747. Up to 4475 conditions per place. [2022-01-19 02:10:15,213 INFO L132 encePairwiseOnDemand]: 130/154 looper letters, 289 selfloop transitions, 163 changer transitions 52/587 dead transitions. [2022-01-19 02:10:15,213 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 587 transitions, 8466 flow [2022-01-19 02:10:15,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-19 02:10:15,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-01-19 02:10:15,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1886 transitions. [2022-01-19 02:10:15,216 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5324675324675324 [2022-01-19 02:10:15,216 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1886 transitions. [2022-01-19 02:10:15,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1886 transitions. [2022-01-19 02:10:15,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:10:15,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1886 transitions. [2022-01-19 02:10:15,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 82.0) internal successors, (1886), 23 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:10:15,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 154.0) internal successors, (3696), 24 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:10:15,221 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 154.0) internal successors, (3696), 24 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:10:15,221 INFO L186 Difference]: Start difference. First operand has 358 places, 517 transitions, 6753 flow. Second operand 23 states and 1886 transitions. [2022-01-19 02:10:15,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 587 transitions, 8466 flow [2022-01-19 02:10:15,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 587 transitions, 7755 flow, removed 315 selfloop flow, removed 30 redundant places. [2022-01-19 02:10:15,594 INFO L242 Difference]: Finished difference. Result has 352 places, 503 transitions, 6278 flow [2022-01-19 02:10:15,594 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=6090, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=6278, PETRI_PLACES=352, PETRI_TRANSITIONS=503} [2022-01-19 02:10:15,595 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 211 predicate places. [2022-01-19 02:10:15,595 INFO L470 AbstractCegarLoop]: Abstraction has has 352 places, 503 transitions, 6278 flow [2022-01-19 02:10:15,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 78.6086956521739) internal successors, (1808), 23 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:10:15,595 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:10:15,595 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:10:15,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-19 02:10:15,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-19 02:10:15,803 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:10:15,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:10:15,804 INFO L85 PathProgramCache]: Analyzing trace with hash -595203464, now seen corresponding path program 9 times [2022-01-19 02:10:15,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:10:15,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100920146] [2022-01-19 02:10:15,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:10:15,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:10:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:10:16,366 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:10:16,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:10:16,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100920146] [2022-01-19 02:10:16,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100920146] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:10:16,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938523447] [2022-01-19 02:10:16,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 02:10:16,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:10:16,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:10:16,368 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:10:16,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-19 02:10:16,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-01-19 02:10:16,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:10:16,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-19 02:10:16,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:10:16,863 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-19 02:10:16,864 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 17 [2022-01-19 02:10:16,936 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 02:10:16,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 02:10:16,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938523447] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:10:16,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 02:10:16,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [26] total 34 [2022-01-19 02:10:16,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679182109] [2022-01-19 02:10:16,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:10:16,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-19 02:10:16,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:10:16,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-19 02:10:16,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1020, Unknown=0, NotChecked=0, Total=1122 [2022-01-19 02:10:16,939 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 154 [2022-01-19 02:10:16,940 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 503 transitions, 6278 flow. Second operand has 12 states, 12 states have (on average 101.66666666666667) internal successors, (1220), 12 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:10:16,940 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:10:16,940 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 154 [2022-01-19 02:10:16,940 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:10:18,979 INFO L129 PetriNetUnfolder]: 3520/8860 cut-off events. [2022-01-19 02:10:18,980 INFO L130 PetriNetUnfolder]: For 103150/103860 co-relation queries the response was YES. [2022-01-19 02:10:19,038 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45975 conditions, 8860 events. 3520/8860 cut-off events. For 103150/103860 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 83600 event pairs, 821 based on Foata normal form. 206/8663 useless extension candidates. Maximal degree in co-relation 45886. Up to 5045 conditions per place. [2022-01-19 02:10:19,072 INFO L132 encePairwiseOnDemand]: 139/154 looper letters, 355 selfloop transitions, 114 changer transitions 69/640 dead transitions. [2022-01-19 02:10:19,073 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 640 transitions, 8967 flow [2022-01-19 02:10:19,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 02:10:19,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 02:10:19,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1395 transitions. [2022-01-19 02:10:19,074 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6968031968031968 [2022-01-19 02:10:19,074 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1395 transitions. [2022-01-19 02:10:19,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1395 transitions. [2022-01-19 02:10:19,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:10:19,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1395 transitions. [2022-01-19 02:10:19,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 107.3076923076923) internal successors, (1395), 13 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:10:19,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 154.0) internal successors, (2156), 14 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:10:19,078 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 154.0) internal successors, (2156), 14 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:10:19,078 INFO L186 Difference]: Start difference. First operand has 352 places, 503 transitions, 6278 flow. Second operand 13 states and 1395 transitions. [2022-01-19 02:10:19,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 640 transitions, 8967 flow [2022-01-19 02:10:19,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 640 transitions, 8543 flow, removed 28 selfloop flow, removed 27 redundant places. [2022-01-19 02:10:19,407 INFO L242 Difference]: Finished difference. Result has 333 places, 538 transitions, 6863 flow [2022-01-19 02:10:19,408 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=5926, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6863, PETRI_PLACES=333, PETRI_TRANSITIONS=538} [2022-01-19 02:10:19,408 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 192 predicate places. [2022-01-19 02:10:19,408 INFO L470 AbstractCegarLoop]: Abstraction has has 333 places, 538 transitions, 6863 flow [2022-01-19 02:10:19,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 101.66666666666667) internal successors, (1220), 12 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:10:19,409 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:10:19,409 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:10:19,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-19 02:10:19,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:10:19,624 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:10:19,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:10:19,624 INFO L85 PathProgramCache]: Analyzing trace with hash -888586610, now seen corresponding path program 10 times [2022-01-19 02:10:19,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:10:19,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136339418] [2022-01-19 02:10:19,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:10:19,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:10:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:10:21,387 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:10:21,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:10:21,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136339418] [2022-01-19 02:10:21,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136339418] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:10:21,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605221278] [2022-01-19 02:10:21,387 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 02:10:21,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:10:21,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:10:21,388 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:10:21,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-19 02:10:21,470 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 02:10:21,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:10:21,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 51 conjunts are in the unsatisfiable core [2022-01-19 02:10:21,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:10:22,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 02:10:22,609 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 34 treesize of output 34 [2022-01-19 02:10:22,873 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-19 02:10:22,874 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 17 [2022-01-19 02:10:22,994 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:10:22,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:10:23,569 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-19 02:10:23,569 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 105 [2022-01-19 02:10:23,578 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-19 02:10:23,578 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 11 [2022-01-19 02:10:25,903 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:10:25,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605221278] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:10:25,904 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:10:25,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 28, 28] total 86 [2022-01-19 02:10:25,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752533344] [2022-01-19 02:10:25,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:10:25,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-19 02:10:25,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:10:25,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-19 02:10:25,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=6974, Unknown=1, NotChecked=0, Total=7310 [2022-01-19 02:10:25,908 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 154 [2022-01-19 02:10:25,910 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 538 transitions, 6863 flow. Second operand has 86 states, 86 states have (on average 66.38372093023256) internal successors, (5709), 86 states have internal predecessors, (5709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:10:25,910 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:10:25,910 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 154 [2022-01-19 02:10:25,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:10:43,158 INFO L129 PetriNetUnfolder]: 4111/10713 cut-off events. [2022-01-19 02:10:43,158 INFO L130 PetriNetUnfolder]: For 116082/116817 co-relation queries the response was YES. [2022-01-19 02:10:43,235 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53758 conditions, 10713 events. 4111/10713 cut-off events. For 116082/116817 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 106960 event pairs, 900 based on Foata normal form. 248/10510 useless extension candidates. Maximal degree in co-relation 53671. Up to 2570 conditions per place. [2022-01-19 02:10:43,273 INFO L132 encePairwiseOnDemand]: 108/154 looper letters, 534 selfloop transitions, 189 changer transitions 163/943 dead transitions. [2022-01-19 02:10:43,273 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 943 transitions, 12532 flow [2022-01-19 02:10:43,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-19 02:10:43,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2022-01-19 02:10:43,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 5028 transitions. [2022-01-19 02:10:43,277 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.45346320346320346 [2022-01-19 02:10:43,277 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 5028 transitions. [2022-01-19 02:10:43,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 5028 transitions. [2022-01-19 02:10:43,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:10:43,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 5028 transitions. [2022-01-19 02:10:43,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 69.83333333333333) internal successors, (5028), 72 states have internal predecessors, (5028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:10:43,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 154.0) internal successors, (11242), 73 states have internal predecessors, (11242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:10:43,291 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 154.0) internal successors, (11242), 73 states have internal predecessors, (11242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:10:43,292 INFO L186 Difference]: Start difference. First operand has 333 places, 538 transitions, 6863 flow. Second operand 72 states and 5028 transitions. [2022-01-19 02:10:43,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 943 transitions, 12532 flow [2022-01-19 02:10:43,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 943 transitions, 12191 flow, removed 79 selfloop flow, removed 9 redundant places. [2022-01-19 02:10:43,940 INFO L242 Difference]: Finished difference. Result has 420 places, 557 transitions, 7428 flow [2022-01-19 02:10:43,941 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=6645, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=7428, PETRI_PLACES=420, PETRI_TRANSITIONS=557} [2022-01-19 02:10:43,942 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 279 predicate places. [2022-01-19 02:10:43,942 INFO L470 AbstractCegarLoop]: Abstraction has has 420 places, 557 transitions, 7428 flow [2022-01-19 02:10:43,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 66.38372093023256) internal successors, (5709), 86 states have internal predecessors, (5709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:10:43,943 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:10:43,943 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:10:43,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-19 02:10:44,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-19 02:10:44,159 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:10:44,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:10:44,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1434908790, now seen corresponding path program 11 times [2022-01-19 02:10:44,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:10:44,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660627893] [2022-01-19 02:10:44,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:10:44,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:10:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:10:44,196 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 02:10:44,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:10:44,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660627893] [2022-01-19 02:10:44,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660627893] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:10:44,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:10:44,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 02:10:44,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412827103] [2022-01-19 02:10:44,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:10:44,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 02:10:44,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:10:44,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 02:10:44,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-19 02:10:44,198 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 154 [2022-01-19 02:10:44,198 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 557 transitions, 7428 flow. Second operand has 4 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:10:44,198 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:10:44,198 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 154 [2022-01-19 02:10:44,198 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:10:44,978 INFO L129 PetriNetUnfolder]: 912/4108 cut-off events. [2022-01-19 02:10:44,978 INFO L130 PetriNetUnfolder]: For 56298/56791 co-relation queries the response was YES. [2022-01-19 02:10:45,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20111 conditions, 4108 events. 912/4108 cut-off events. For 56298/56791 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 41180 event pairs, 123 based on Foata normal form. 237/4085 useless extension candidates. Maximal degree in co-relation 19999. Up to 791 conditions per place. [2022-01-19 02:10:45,018 INFO L132 encePairwiseOnDemand]: 150/154 looper letters, 92 selfloop transitions, 132 changer transitions 0/517 dead transitions. [2022-01-19 02:10:45,018 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 517 transitions, 7354 flow [2022-01-19 02:10:45,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 02:10:45,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 02:10:45,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 550 transitions. [2022-01-19 02:10:45,019 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8928571428571429 [2022-01-19 02:10:45,019 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 550 transitions. [2022-01-19 02:10:45,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 550 transitions. [2022-01-19 02:10:45,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:10:45,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 550 transitions. [2022-01-19 02:10:45,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.5) internal successors, (550), 4 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:10:45,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:10:45,020 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:10:45,020 INFO L186 Difference]: Start difference. First operand has 420 places, 557 transitions, 7428 flow. Second operand 4 states and 550 transitions. [2022-01-19 02:10:45,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 517 transitions, 7354 flow [2022-01-19 02:10:45,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 517 transitions, 6866 flow, removed 111 selfloop flow, removed 69 redundant places. [2022-01-19 02:10:45,209 INFO L242 Difference]: Finished difference. Result has 319 places, 502 transitions, 6661 flow [2022-01-19 02:10:45,209 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=6248, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=6661, PETRI_PLACES=319, PETRI_TRANSITIONS=502} [2022-01-19 02:10:45,209 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 178 predicate places. [2022-01-19 02:10:45,210 INFO L470 AbstractCegarLoop]: Abstraction has has 319 places, 502 transitions, 6661 flow [2022-01-19 02:10:45,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:10:45,210 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:10:45,210 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:10:45,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-19 02:10:45,210 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:10:45,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:10:45,210 INFO L85 PathProgramCache]: Analyzing trace with hash 814017038, now seen corresponding path program 12 times [2022-01-19 02:10:45,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:10:45,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659519731] [2022-01-19 02:10:45,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:10:45,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:10:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:10:46,824 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:10:46,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:10:46,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659519731] [2022-01-19 02:10:46,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659519731] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:10:46,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662936799] [2022-01-19 02:10:46,825 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-19 02:10:46,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:10:46,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:10:46,826 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:10:46,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-19 02:10:47,016 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-01-19 02:10:47,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:10:47,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-19 02:10:47,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:10:47,437 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-19 02:10:47,437 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 17 [2022-01-19 02:10:47,531 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 02:10:47,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 02:10:47,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662936799] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:10:47,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 02:10:47,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [35] total 43 [2022-01-19 02:10:47,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282152607] [2022-01-19 02:10:47,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:10:47,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-19 02:10:47,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:10:47,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-19 02:10:47,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1683, Unknown=0, NotChecked=0, Total=1806 [2022-01-19 02:10:47,534 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 154 [2022-01-19 02:10:47,534 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 502 transitions, 6661 flow. Second operand has 12 states, 12 states have (on average 101.66666666666667) internal successors, (1220), 12 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:10:47,534 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:10:47,534 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 154 [2022-01-19 02:10:47,534 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:10:49,071 INFO L129 PetriNetUnfolder]: 2033/6499 cut-off events. [2022-01-19 02:10:49,071 INFO L130 PetriNetUnfolder]: For 70448/71323 co-relation queries the response was YES. [2022-01-19 02:10:49,105 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30458 conditions, 6499 events. 2033/6499 cut-off events. For 70448/71323 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 63903 event pairs, 537 based on Foata normal form. 229/6410 useless extension candidates. Maximal degree in co-relation 30378. Up to 3188 conditions per place. [2022-01-19 02:10:49,124 INFO L132 encePairwiseOnDemand]: 139/154 looper letters, 350 selfloop transitions, 101 changer transitions 63/617 dead transitions. [2022-01-19 02:10:49,124 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 617 transitions, 9009 flow [2022-01-19 02:10:49,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 02:10:49,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 02:10:49,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1393 transitions. [2022-01-19 02:10:49,125 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6958041958041958 [2022-01-19 02:10:49,125 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1393 transitions. [2022-01-19 02:10:49,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1393 transitions. [2022-01-19 02:10:49,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:10:49,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1393 transitions. [2022-01-19 02:10:49,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 107.15384615384616) internal successors, (1393), 13 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:10:49,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 154.0) internal successors, (2156), 14 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:10:49,128 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 154.0) internal successors, (2156), 14 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:10:49,128 INFO L186 Difference]: Start difference. First operand has 319 places, 502 transitions, 6661 flow. Second operand 13 states and 1393 transitions. [2022-01-19 02:10:49,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 617 transitions, 9009 flow [2022-01-19 02:10:49,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 617 transitions, 8843 flow, removed 10 selfloop flow, removed 3 redundant places. [2022-01-19 02:10:49,355 INFO L242 Difference]: Finished difference. Result has 336 places, 521 transitions, 7162 flow [2022-01-19 02:10:49,355 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=6510, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7162, PETRI_PLACES=336, PETRI_TRANSITIONS=521} [2022-01-19 02:10:49,355 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 195 predicate places. [2022-01-19 02:10:49,355 INFO L470 AbstractCegarLoop]: Abstraction has has 336 places, 521 transitions, 7162 flow [2022-01-19 02:10:49,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 101.66666666666667) internal successors, (1220), 12 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:10:49,356 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:10:49,356 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:10:49,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-19 02:10:49,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-19 02:10:49,556 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:10:49,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:10:49,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1144985216, now seen corresponding path program 13 times [2022-01-19 02:10:49,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:10:49,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30971455] [2022-01-19 02:10:49,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:10:49,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:10:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:10:51,102 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:10:51,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:10:51,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30971455] [2022-01-19 02:10:51,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30971455] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:10:51,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374244575] [2022-01-19 02:10:51,102 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-19 02:10:51,102 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:10:51,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:10:51,103 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:10:51,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-19 02:10:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:10:51,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 54 conjunts are in the unsatisfiable core [2022-01-19 02:10:51,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:10:52,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 02:10:52,343 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 33 treesize of output 33 [2022-01-19 02:10:52,861 INFO L353 Elim1Store]: treesize reduction 93, result has 7.0 percent of original size [2022-01-19 02:10:52,862 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 23 [2022-01-19 02:10:52,963 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:10:52,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:10:53,471 WARN L838 $PredicateComparison]: unable to prove that (or (not (< (+ c_~start~0 1) c_~n~0)) (not (< c_~end~0 c_~n~0)) (not (= (mod (select (select |c_#memory_int| c_~queue~0.base) (+ (* c_~end~0 4) c_~queue~0.offset)) 4294967296) (mod |c_thread1Thread1of1ForFork2_~x~0#1| 4294967296))) (not (<= 0 c_~start~0)) (and (forall ((v_ArrVal_488 (Array Int Int))) (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_488) c_~queue~0.base)) (.cse3 (* c_~start~0 4))) (let ((.cse1 (select .cse2 (+ .cse3 c_~queue~0.offset 4))) (.cse0 (select .cse2 (+ .cse3 c_~queue~0.offset)))) (<= (+ (* 4294967296 (div .cse0 4294967296)) .cse1) (+ (* (div .cse1 4294967296) 4294967296) .cse0))))) (forall ((v_ArrVal_488 (Array Int Int))) (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_488) c_~queue~0.base)) (.cse7 (* c_~start~0 4))) (let ((.cse5 (select .cse6 (+ .cse7 c_~queue~0.offset))) (.cse4 (select .cse6 (+ .cse7 c_~queue~0.offset 4)))) (< (+ (* (div .cse4 4294967296) 4294967296) .cse5) (+ (* 4294967296 (div .cse5 4294967296)) .cse4 1)))))) (not (<= 0 c_~end~0))) is different from false [2022-01-19 02:10:53,576 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-19 02:10:53,577 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 236 treesize of output 204 [2022-01-19 02:10:53,591 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-19 02:10:53,591 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 135 treesize of output 109 [2022-01-19 02:10:53,600 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-19 02:10:53,600 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 109 treesize of output 83 [2022-01-19 02:10:57,039 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:10:57,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374244575] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:10:57,039 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:10:57,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 28, 28] total 82 [2022-01-19 02:10:57,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883291824] [2022-01-19 02:10:57,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:10:57,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-01-19 02:10:57,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:10:57,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-01-19 02:10:57,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=6142, Unknown=2, NotChecked=158, Total=6642 [2022-01-19 02:10:57,043 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 154 [2022-01-19 02:10:57,045 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 521 transitions, 7162 flow. Second operand has 82 states, 82 states have (on average 66.5) internal successors, (5453), 82 states have internal predecessors, (5453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:10:57,045 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:10:57,045 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 154 [2022-01-19 02:10:57,045 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:11:07,765 INFO L129 PetriNetUnfolder]: 2307/7341 cut-off events. [2022-01-19 02:11:07,766 INFO L130 PetriNetUnfolder]: For 84334/85048 co-relation queries the response was YES. [2022-01-19 02:11:07,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35886 conditions, 7341 events. 2307/7341 cut-off events. For 84334/85048 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 74650 event pairs, 418 based on Foata normal form. 228/7203 useless extension candidates. Maximal degree in co-relation 35799. Up to 1559 conditions per place. [2022-01-19 02:11:07,829 INFO L132 encePairwiseOnDemand]: 109/154 looper letters, 416 selfloop transitions, 388 changer transitions 41/902 dead transitions. [2022-01-19 02:11:07,829 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 902 transitions, 13456 flow [2022-01-19 02:11:07,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-19 02:11:07,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-01-19 02:11:07,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 4294 transitions. [2022-01-19 02:11:07,832 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.44972769166317556 [2022-01-19 02:11:07,832 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 4294 transitions. [2022-01-19 02:11:07,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 4294 transitions. [2022-01-19 02:11:07,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:11:07,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 4294 transitions. [2022-01-19 02:11:07,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 69.25806451612904) internal successors, (4294), 62 states have internal predecessors, (4294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:07,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 154.0) internal successors, (9702), 63 states have internal predecessors, (9702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:07,841 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 154.0) internal successors, (9702), 63 states have internal predecessors, (9702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:07,841 INFO L186 Difference]: Start difference. First operand has 336 places, 521 transitions, 7162 flow. Second operand 62 states and 4294 transitions. [2022-01-19 02:11:07,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 902 transitions, 13456 flow [2022-01-19 02:11:08,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 902 transitions, 13237 flow, removed 24 selfloop flow, removed 10 redundant places. [2022-01-19 02:11:08,115 INFO L242 Difference]: Finished difference. Result has 402 places, 691 transitions, 10751 flow [2022-01-19 02:11:08,116 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=6976, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=10751, PETRI_PLACES=402, PETRI_TRANSITIONS=691} [2022-01-19 02:11:08,116 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 261 predicate places. [2022-01-19 02:11:08,116 INFO L470 AbstractCegarLoop]: Abstraction has has 402 places, 691 transitions, 10751 flow [2022-01-19 02:11:08,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 66.5) internal successors, (5453), 82 states have internal predecessors, (5453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:08,117 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:11:08,117 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:11:08,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-19 02:11:08,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-19 02:11:08,317 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:11:08,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:11:08,318 INFO L85 PathProgramCache]: Analyzing trace with hash -668747494, now seen corresponding path program 14 times [2022-01-19 02:11:08,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:11:08,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771036000] [2022-01-19 02:11:08,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:11:08,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:11:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:11:09,947 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:11:09,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:11:09,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771036000] [2022-01-19 02:11:09,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771036000] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:11:09,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050194852] [2022-01-19 02:11:09,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 02:11:09,948 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:11:09,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:11:09,949 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:11:09,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-19 02:11:10,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-19 02:11:10,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:11:10,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-19 02:11:10,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:11:10,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 02:11:10,611 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 23 [2022-01-19 02:11:10,816 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-19 02:11:10,816 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 17 [2022-01-19 02:11:10,917 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 02:11:10,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 02:11:10,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050194852] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:11:10,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 02:11:10,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [37] total 52 [2022-01-19 02:11:10,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770300698] [2022-01-19 02:11:10,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:11:10,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-19 02:11:10,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:11:10,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-19 02:11:10,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=2509, Unknown=0, NotChecked=0, Total=2652 [2022-01-19 02:11:10,919 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 154 [2022-01-19 02:11:10,920 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 691 transitions, 10751 flow. Second operand has 19 states, 19 states have (on average 86.0) internal successors, (1634), 19 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:10,920 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:11:10,920 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 154 [2022-01-19 02:11:10,920 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:11:13,257 INFO L129 PetriNetUnfolder]: 2327/7411 cut-off events. [2022-01-19 02:11:13,257 INFO L130 PetriNetUnfolder]: For 126094/126926 co-relation queries the response was YES. [2022-01-19 02:11:13,328 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43064 conditions, 7411 events. 2327/7411 cut-off events. For 126094/126926 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 75623 event pairs, 510 based on Foata normal form. 209/7263 useless extension candidates. Maximal degree in co-relation 42962. Up to 3816 conditions per place. [2022-01-19 02:11:13,356 INFO L132 encePairwiseOnDemand]: 131/154 looper letters, 516 selfloop transitions, 119 changer transitions 75/797 dead transitions. [2022-01-19 02:11:13,357 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 797 transitions, 13440 flow [2022-01-19 02:11:13,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 02:11:13,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 02:11:13,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1875 transitions. [2022-01-19 02:11:13,360 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5797773654916512 [2022-01-19 02:11:13,360 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1875 transitions. [2022-01-19 02:11:13,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1875 transitions. [2022-01-19 02:11:13,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:11:13,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1875 transitions. [2022-01-19 02:11:13,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.28571428571429) internal successors, (1875), 21 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:13,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 154.0) internal successors, (3388), 22 states have internal predecessors, (3388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:13,364 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 154.0) internal successors, (3388), 22 states have internal predecessors, (3388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:13,364 INFO L186 Difference]: Start difference. First operand has 402 places, 691 transitions, 10751 flow. Second operand 21 states and 1875 transitions. [2022-01-19 02:11:13,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 797 transitions, 13440 flow [2022-01-19 02:11:13,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 797 transitions, 12591 flow, removed 399 selfloop flow, removed 31 redundant places. [2022-01-19 02:11:13,936 INFO L242 Difference]: Finished difference. Result has 391 places, 689 transitions, 10270 flow [2022-01-19 02:11:13,936 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=9978, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=10270, PETRI_PLACES=391, PETRI_TRANSITIONS=689} [2022-01-19 02:11:13,937 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 250 predicate places. [2022-01-19 02:11:13,937 INFO L470 AbstractCegarLoop]: Abstraction has has 391 places, 689 transitions, 10270 flow [2022-01-19 02:11:13,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 86.0) internal successors, (1634), 19 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:13,937 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:11:13,937 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:11:13,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-19 02:11:14,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-19 02:11:14,143 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:11:14,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:11:14,144 INFO L85 PathProgramCache]: Analyzing trace with hash 640474334, now seen corresponding path program 15 times [2022-01-19 02:11:14,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:11:14,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511883206] [2022-01-19 02:11:14,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:11:14,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:11:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:11:15,374 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:11:15,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:11:15,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511883206] [2022-01-19 02:11:15,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511883206] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:11:15,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824197855] [2022-01-19 02:11:15,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 02:11:15,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:11:15,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:11:15,375 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:11:15,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-19 02:11:15,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-01-19 02:11:15,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:11:15,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-19 02:11:15,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:11:16,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 02:11:16,043 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 34 treesize of output 34 [2022-01-19 02:11:16,196 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-19 02:11:16,196 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 17 [2022-01-19 02:11:16,297 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 02:11:16,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 02:11:16,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824197855] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:11:16,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 02:11:16,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [35] total 50 [2022-01-19 02:11:16,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942190759] [2022-01-19 02:11:16,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:11:16,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-19 02:11:16,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:11:16,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-19 02:11:16,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=2308, Unknown=0, NotChecked=0, Total=2450 [2022-01-19 02:11:16,300 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 154 [2022-01-19 02:11:16,300 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 689 transitions, 10270 flow. Second operand has 19 states, 19 states have (on average 86.0) internal successors, (1634), 19 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:16,300 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:11:16,301 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 154 [2022-01-19 02:11:16,301 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:11:18,607 INFO L129 PetriNetUnfolder]: 2285/7306 cut-off events. [2022-01-19 02:11:18,607 INFO L130 PetriNetUnfolder]: For 110743/111507 co-relation queries the response was YES. [2022-01-19 02:11:18,677 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40929 conditions, 7306 events. 2285/7306 cut-off events. For 110743/111507 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 74363 event pairs, 517 based on Foata normal form. 219/7170 useless extension candidates. Maximal degree in co-relation 40824. Up to 3723 conditions per place. [2022-01-19 02:11:18,704 INFO L132 encePairwiseOnDemand]: 132/154 looper letters, 501 selfloop transitions, 115 changer transitions 80/783 dead transitions. [2022-01-19 02:11:18,704 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 783 transitions, 12773 flow [2022-01-19 02:11:18,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 02:11:18,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 02:11:18,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1875 transitions. [2022-01-19 02:11:18,706 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5797773654916512 [2022-01-19 02:11:18,706 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1875 transitions. [2022-01-19 02:11:18,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1875 transitions. [2022-01-19 02:11:18,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:11:18,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1875 transitions. [2022-01-19 02:11:18,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.28571428571429) internal successors, (1875), 21 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:18,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 154.0) internal successors, (3388), 22 states have internal predecessors, (3388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:18,709 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 154.0) internal successors, (3388), 22 states have internal predecessors, (3388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:18,710 INFO L186 Difference]: Start difference. First operand has 391 places, 689 transitions, 10270 flow. Second operand 21 states and 1875 transitions. [2022-01-19 02:11:18,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 783 transitions, 12773 flow [2022-01-19 02:11:19,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 783 transitions, 12485 flow, removed 26 selfloop flow, removed 20 redundant places. [2022-01-19 02:11:19,141 INFO L242 Difference]: Finished difference. Result has 392 places, 670 transitions, 10065 flow [2022-01-19 02:11:19,142 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=10000, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=10065, PETRI_PLACES=392, PETRI_TRANSITIONS=670} [2022-01-19 02:11:19,142 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 251 predicate places. [2022-01-19 02:11:19,142 INFO L470 AbstractCegarLoop]: Abstraction has has 392 places, 670 transitions, 10065 flow [2022-01-19 02:11:19,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 86.0) internal successors, (1634), 19 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:19,142 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:11:19,142 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:11:19,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-19 02:11:19,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:11:19,343 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:11:19,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:11:19,343 INFO L85 PathProgramCache]: Analyzing trace with hash 126619642, now seen corresponding path program 16 times [2022-01-19 02:11:19,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:11:19,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721179695] [2022-01-19 02:11:19,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:11:19,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:11:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:11:20,276 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:11:20,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:11:20,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721179695] [2022-01-19 02:11:20,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721179695] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:11:20,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751724954] [2022-01-19 02:11:20,276 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 02:11:20,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:11:20,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:11:20,277 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:11:20,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-19 02:11:20,369 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 02:11:20,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:11:20,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 51 conjunts are in the unsatisfiable core [2022-01-19 02:11:20,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:11:21,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 02:11:21,340 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 34 treesize of output 34 [2022-01-19 02:11:21,556 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-19 02:11:21,557 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 17 [2022-01-19 02:11:21,653 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:11:21,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:11:22,188 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-19 02:11:22,188 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 133 treesize of output 134 [2022-01-19 02:11:22,198 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-19 02:11:22,198 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 45 treesize of output 19 [2022-01-19 02:11:24,132 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:11:24,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751724954] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:11:24,132 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:11:24,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 28, 28] total 79 [2022-01-19 02:11:24,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097939520] [2022-01-19 02:11:24,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:11:24,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-01-19 02:11:24,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:11:24,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-01-19 02:11:24,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=5838, Unknown=1, NotChecked=0, Total=6162 [2022-01-19 02:11:24,136 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 154 [2022-01-19 02:11:24,139 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 670 transitions, 10065 flow. Second operand has 79 states, 79 states have (on average 71.37974683544304) internal successors, (5639), 79 states have internal predecessors, (5639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:24,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:11:24,139 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 154 [2022-01-19 02:11:24,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:11:32,917 INFO L129 PetriNetUnfolder]: 2330/7389 cut-off events. [2022-01-19 02:11:32,917 INFO L130 PetriNetUnfolder]: For 113763/114465 co-relation queries the response was YES. [2022-01-19 02:11:32,977 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41384 conditions, 7389 events. 2330/7389 cut-off events. For 113763/114465 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 74593 event pairs, 463 based on Foata normal form. 276/7327 useless extension candidates. Maximal degree in co-relation 41280. Up to 1689 conditions per place. [2022-01-19 02:11:33,001 INFO L132 encePairwiseOnDemand]: 116/154 looper letters, 455 selfloop transitions, 236 changer transitions 142/899 dead transitions. [2022-01-19 02:11:33,001 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 899 transitions, 14293 flow [2022-01-19 02:11:33,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-19 02:11:33,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2022-01-19 02:11:33,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 4238 transitions. [2022-01-19 02:11:33,004 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.48279790385053545 [2022-01-19 02:11:33,004 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 4238 transitions. [2022-01-19 02:11:33,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 4238 transitions. [2022-01-19 02:11:33,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:11:33,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 4238 transitions. [2022-01-19 02:11:33,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 74.35087719298245) internal successors, (4238), 57 states have internal predecessors, (4238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:33,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 154.0) internal successors, (8932), 58 states have internal predecessors, (8932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:33,013 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 154.0) internal successors, (8932), 58 states have internal predecessors, (8932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:33,013 INFO L186 Difference]: Start difference. First operand has 392 places, 670 transitions, 10065 flow. Second operand 57 states and 4238 transitions. [2022-01-19 02:11:33,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 899 transitions, 14293 flow [2022-01-19 02:11:33,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 899 transitions, 13754 flow, removed 172 selfloop flow, removed 25 redundant places. [2022-01-19 02:11:33,390 INFO L242 Difference]: Finished difference. Result has 428 places, 640 transitions, 10125 flow [2022-01-19 02:11:33,390 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=9824, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=10125, PETRI_PLACES=428, PETRI_TRANSITIONS=640} [2022-01-19 02:11:33,390 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 287 predicate places. [2022-01-19 02:11:33,390 INFO L470 AbstractCegarLoop]: Abstraction has has 428 places, 640 transitions, 10125 flow [2022-01-19 02:11:33,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 71.37974683544304) internal successors, (5639), 79 states have internal predecessors, (5639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:33,391 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:11:33,391 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:11:33,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-19 02:11:33,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-19 02:11:33,598 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:11:33,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:11:33,599 INFO L85 PathProgramCache]: Analyzing trace with hash 864077837, now seen corresponding path program 1 times [2022-01-19 02:11:33,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:11:33,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504542588] [2022-01-19 02:11:33,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:11:33,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:11:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:11:33,644 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 02:11:33,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:11:33,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504542588] [2022-01-19 02:11:33,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504542588] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:11:33,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:11:33,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 02:11:33,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077447628] [2022-01-19 02:11:33,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:11:33,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 02:11:33,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:11:33,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 02:11:33,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 02:11:33,646 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 154 [2022-01-19 02:11:33,646 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 640 transitions, 10125 flow. Second operand has 5 states, 5 states have (on average 129.6) internal successors, (648), 5 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:33,646 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:11:33,646 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 154 [2022-01-19 02:11:33,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:11:36,359 INFO L129 PetriNetUnfolder]: 4481/14310 cut-off events. [2022-01-19 02:11:36,359 INFO L130 PetriNetUnfolder]: For 234608/237141 co-relation queries the response was YES. [2022-01-19 02:11:36,502 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73348 conditions, 14310 events. 4481/14310 cut-off events. For 234608/237141 co-relation queries the response was YES. Maximal size of possible extension queue 859. Compared 169461 event pairs, 1182 based on Foata normal form. 199/13029 useless extension candidates. Maximal degree in co-relation 73239. Up to 2701 conditions per place. [2022-01-19 02:11:36,548 INFO L132 encePairwiseOnDemand]: 146/154 looper letters, 560 selfloop transitions, 7 changer transitions 0/900 dead transitions. [2022-01-19 02:11:36,548 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 900 transitions, 16308 flow [2022-01-19 02:11:36,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 02:11:36,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 02:11:36,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 690 transitions. [2022-01-19 02:11:36,549 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8961038961038961 [2022-01-19 02:11:36,549 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 690 transitions. [2022-01-19 02:11:36,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 690 transitions. [2022-01-19 02:11:36,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:11:36,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 690 transitions. [2022-01-19 02:11:36,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:36,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:36,551 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:36,551 INFO L186 Difference]: Start difference. First operand has 428 places, 640 transitions, 10125 flow. Second operand 5 states and 690 transitions. [2022-01-19 02:11:36,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 900 transitions, 16308 flow [2022-01-19 02:11:37,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 900 transitions, 15754 flow, removed 100 selfloop flow, removed 53 redundant places. [2022-01-19 02:11:37,957 INFO L242 Difference]: Finished difference. Result has 358 places, 646 transitions, 9792 flow [2022-01-19 02:11:37,957 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=9741, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=634, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=9792, PETRI_PLACES=358, PETRI_TRANSITIONS=646} [2022-01-19 02:11:37,958 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 217 predicate places. [2022-01-19 02:11:37,958 INFO L470 AbstractCegarLoop]: Abstraction has has 358 places, 646 transitions, 9792 flow [2022-01-19 02:11:37,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 129.6) internal successors, (648), 5 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:37,958 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:11:37,958 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:11:37,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-19 02:11:37,958 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:11:37,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:11:37,959 INFO L85 PathProgramCache]: Analyzing trace with hash 162457185, now seen corresponding path program 1 times [2022-01-19 02:11:37,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:11:37,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252014190] [2022-01-19 02:11:37,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:11:37,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:11:37,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:11:38,000 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 02:11:38,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:11:38,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252014190] [2022-01-19 02:11:38,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252014190] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:11:38,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836868642] [2022-01-19 02:11:38,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:11:38,001 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:11:38,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:11:38,003 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:11:38,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-19 02:11:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:11:38,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-19 02:11:38,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:11:38,207 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 02:11:38,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:11:38,322 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 02:11:38,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836868642] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 02:11:38,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 02:11:38,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2022-01-19 02:11:38,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298482789] [2022-01-19 02:11:38,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:11:38,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 02:11:38,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:11:38,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 02:11:38,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-19 02:11:38,324 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 154 [2022-01-19 02:11:38,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 646 transitions, 9792 flow. Second operand has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:38,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:11:38,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 154 [2022-01-19 02:11:38,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:11:40,636 INFO L129 PetriNetUnfolder]: 3158/11311 cut-off events. [2022-01-19 02:11:40,637 INFO L130 PetriNetUnfolder]: For 152169/153926 co-relation queries the response was YES. [2022-01-19 02:11:40,714 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55319 conditions, 11311 events. 3158/11311 cut-off events. For 152169/153926 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 132297 event pairs, 878 based on Foata normal form. 258/11129 useless extension candidates. Maximal degree in co-relation 55229. Up to 2712 conditions per place. [2022-01-19 02:11:40,746 INFO L132 encePairwiseOnDemand]: 149/154 looper letters, 414 selfloop transitions, 8 changer transitions 0/760 dead transitions. [2022-01-19 02:11:40,746 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 760 transitions, 12824 flow [2022-01-19 02:11:40,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 02:11:40,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 02:11:40,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 554 transitions. [2022-01-19 02:11:40,747 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8993506493506493 [2022-01-19 02:11:40,747 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 554 transitions. [2022-01-19 02:11:40,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 554 transitions. [2022-01-19 02:11:40,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:11:40,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 554 transitions. [2022-01-19 02:11:40,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.5) internal successors, (554), 4 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:40,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:40,748 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:40,748 INFO L186 Difference]: Start difference. First operand has 358 places, 646 transitions, 9792 flow. Second operand 4 states and 554 transitions. [2022-01-19 02:11:40,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 760 transitions, 12824 flow [2022-01-19 02:11:41,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 760 transitions, 12792 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-01-19 02:11:41,326 INFO L242 Difference]: Finished difference. Result has 363 places, 651 transitions, 9839 flow [2022-01-19 02:11:41,326 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=9770, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=638, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=9839, PETRI_PLACES=363, PETRI_TRANSITIONS=651} [2022-01-19 02:11:41,327 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 222 predicate places. [2022-01-19 02:11:41,327 INFO L470 AbstractCegarLoop]: Abstraction has has 363 places, 651 transitions, 9839 flow [2022-01-19 02:11:41,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:41,327 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:11:41,327 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:11:41,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-19 02:11:41,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:11:41,528 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:11:41,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:11:41,528 INFO L85 PathProgramCache]: Analyzing trace with hash -303169621, now seen corresponding path program 2 times [2022-01-19 02:11:41,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:11:41,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210911328] [2022-01-19 02:11:41,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:11:41,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:11:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:11:41,565 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 02:11:41,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:11:41,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210911328] [2022-01-19 02:11:41,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210911328] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:11:41,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:11:41,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 02:11:41,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004033473] [2022-01-19 02:11:41,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:11:41,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 02:11:41,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:11:41,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 02:11:41,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 02:11:41,567 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 154 [2022-01-19 02:11:41,567 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 651 transitions, 9839 flow. Second operand has 5 states, 5 states have (on average 129.6) internal successors, (648), 5 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:41,567 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:11:41,567 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 154 [2022-01-19 02:11:41,568 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:11:43,561 INFO L129 PetriNetUnfolder]: 3241/10379 cut-off events. [2022-01-19 02:11:43,561 INFO L130 PetriNetUnfolder]: For 155496/157609 co-relation queries the response was YES. [2022-01-19 02:11:43,671 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54563 conditions, 10379 events. 3241/10379 cut-off events. For 155496/157609 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 115314 event pairs, 918 based on Foata normal form. 396/10318 useless extension candidates. Maximal degree in co-relation 54470. Up to 2749 conditions per place. [2022-01-19 02:11:43,701 INFO L132 encePairwiseOnDemand]: 147/154 looper letters, 294 selfloop transitions, 8 changer transitions 127/676 dead transitions. [2022-01-19 02:11:43,701 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 676 transitions, 10927 flow [2022-01-19 02:11:43,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 02:11:43,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 02:11:43,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 809 transitions. [2022-01-19 02:11:43,702 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8755411255411255 [2022-01-19 02:11:43,702 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 809 transitions. [2022-01-19 02:11:43,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 809 transitions. [2022-01-19 02:11:43,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:11:43,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 809 transitions. [2022-01-19 02:11:43,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 134.83333333333334) internal successors, (809), 6 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:43,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 154.0) internal successors, (1078), 7 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:43,703 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 154.0) internal successors, (1078), 7 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:43,704 INFO L186 Difference]: Start difference. First operand has 363 places, 651 transitions, 9839 flow. Second operand 6 states and 809 transitions. [2022-01-19 02:11:43,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 676 transitions, 10927 flow [2022-01-19 02:11:44,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 676 transitions, 10559 flow, removed 96 selfloop flow, removed 10 redundant places. [2022-01-19 02:11:44,485 INFO L242 Difference]: Finished difference. Result has 358 places, 453 transitions, 5601 flow [2022-01-19 02:11:44,485 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=6969, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5601, PETRI_PLACES=358, PETRI_TRANSITIONS=453} [2022-01-19 02:11:44,485 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 217 predicate places. [2022-01-19 02:11:44,486 INFO L470 AbstractCegarLoop]: Abstraction has has 358 places, 453 transitions, 5601 flow [2022-01-19 02:11:44,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 129.6) internal successors, (648), 5 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:44,486 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:11:44,486 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:11:44,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-19 02:11:44,486 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:11:44,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:11:44,487 INFO L85 PathProgramCache]: Analyzing trace with hash -2060086643, now seen corresponding path program 2 times [2022-01-19 02:11:44,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:11:44,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943827303] [2022-01-19 02:11:44,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:11:44,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:11:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:11:44,529 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 02:11:44,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:11:44,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943827303] [2022-01-19 02:11:44,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943827303] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:11:44,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182237747] [2022-01-19 02:11:44,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 02:11:44,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:11:44,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:11:44,531 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:11:44,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-19 02:11:44,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 02:11:44,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:11:44,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-19 02:11:44,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:11:44,812 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 02:11:44,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 02:11:44,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182237747] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:11:44,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 02:11:44,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-01-19 02:11:44,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510849149] [2022-01-19 02:11:44,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:11:44,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 02:11:44,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:11:44,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 02:11:44,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-19 02:11:44,814 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 154 [2022-01-19 02:11:44,814 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 453 transitions, 5601 flow. Second operand has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:44,814 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:11:44,814 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 154 [2022-01-19 02:11:44,814 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:11:46,413 INFO L129 PetriNetUnfolder]: 2337/8114 cut-off events. [2022-01-19 02:11:46,413 INFO L130 PetriNetUnfolder]: For 96090/97645 co-relation queries the response was YES. [2022-01-19 02:11:46,495 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40302 conditions, 8114 events. 2337/8114 cut-off events. For 96090/97645 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 88574 event pairs, 656 based on Foata normal form. 564/8232 useless extension candidates. Maximal degree in co-relation 40213. Up to 2589 conditions per place. [2022-01-19 02:11:46,526 INFO L132 encePairwiseOnDemand]: 149/154 looper letters, 251 selfloop transitions, 7 changer transitions 0/511 dead transitions. [2022-01-19 02:11:46,526 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 511 transitions, 7055 flow [2022-01-19 02:11:46,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 02:11:46,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 02:11:46,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 556 transitions. [2022-01-19 02:11:46,527 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9025974025974026 [2022-01-19 02:11:46,527 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 556 transitions. [2022-01-19 02:11:46,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 556 transitions. [2022-01-19 02:11:46,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:11:46,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 556 transitions. [2022-01-19 02:11:46,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:46,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:46,529 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:46,529 INFO L186 Difference]: Start difference. First operand has 358 places, 453 transitions, 5601 flow. Second operand 4 states and 556 transitions. [2022-01-19 02:11:46,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 511 transitions, 7055 flow [2022-01-19 02:11:46,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 511 transitions, 6567 flow, removed 134 selfloop flow, removed 18 redundant places. [2022-01-19 02:11:46,953 INFO L242 Difference]: Finished difference. Result has 330 places, 448 transitions, 5120 flow [2022-01-19 02:11:46,954 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=5079, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=5120, PETRI_PLACES=330, PETRI_TRANSITIONS=448} [2022-01-19 02:11:46,954 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 189 predicate places. [2022-01-19 02:11:46,954 INFO L470 AbstractCegarLoop]: Abstraction has has 330 places, 448 transitions, 5120 flow [2022-01-19 02:11:46,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:46,954 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:11:46,955 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:11:46,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-19 02:11:47,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:11:47,156 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:11:47,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:11:47,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1724046937, now seen corresponding path program 3 times [2022-01-19 02:11:47,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:11:47,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78124644] [2022-01-19 02:11:47,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:11:47,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:11:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:11:47,207 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 02:11:47,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:11:47,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78124644] [2022-01-19 02:11:47,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78124644] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:11:47,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:11:47,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 02:11:47,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871971254] [2022-01-19 02:11:47,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:11:47,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 02:11:47,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:11:47,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 02:11:47,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 02:11:47,209 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 154 [2022-01-19 02:11:47,209 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 448 transitions, 5120 flow. Second operand has 5 states, 5 states have (on average 129.6) internal successors, (648), 5 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:47,209 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:11:47,209 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 154 [2022-01-19 02:11:47,210 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:11:49,011 INFO L129 PetriNetUnfolder]: 3382/11281 cut-off events. [2022-01-19 02:11:49,011 INFO L130 PetriNetUnfolder]: For 93591/95024 co-relation queries the response was YES. [2022-01-19 02:11:49,092 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50319 conditions, 11281 events. 3382/11281 cut-off events. For 93591/95024 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 127048 event pairs, 893 based on Foata normal form. 302/11090 useless extension candidates. Maximal degree in co-relation 50239. Up to 2619 conditions per place. [2022-01-19 02:11:49,122 INFO L132 encePairwiseOnDemand]: 147/154 looper letters, 301 selfloop transitions, 11 changer transitions 12/565 dead transitions. [2022-01-19 02:11:49,123 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 565 transitions, 7450 flow [2022-01-19 02:11:49,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 02:11:49,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 02:11:49,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 810 transitions. [2022-01-19 02:11:49,124 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8766233766233766 [2022-01-19 02:11:49,124 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 810 transitions. [2022-01-19 02:11:49,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 810 transitions. [2022-01-19 02:11:49,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:11:49,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 810 transitions. [2022-01-19 02:11:49,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 135.0) internal successors, (810), 6 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:49,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 154.0) internal successors, (1078), 7 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:49,284 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 154.0) internal successors, (1078), 7 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:49,284 INFO L186 Difference]: Start difference. First operand has 330 places, 448 transitions, 5120 flow. Second operand 6 states and 810 transitions. [2022-01-19 02:11:49,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 565 transitions, 7450 flow [2022-01-19 02:11:49,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 565 transitions, 7365 flow, removed 19 selfloop flow, removed 2 redundant places. [2022-01-19 02:11:49,592 INFO L242 Difference]: Finished difference. Result has 336 places, 445 transitions, 5019 flow [2022-01-19 02:11:49,592 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=4982, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5019, PETRI_PLACES=336, PETRI_TRANSITIONS=445} [2022-01-19 02:11:49,593 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 195 predicate places. [2022-01-19 02:11:49,593 INFO L470 AbstractCegarLoop]: Abstraction has has 336 places, 445 transitions, 5019 flow [2022-01-19 02:11:49,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 129.6) internal successors, (648), 5 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:49,593 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:11:49,593 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:11:49,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-19 02:11:49,593 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:11:49,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:11:49,593 INFO L85 PathProgramCache]: Analyzing trace with hash -331846193, now seen corresponding path program 4 times [2022-01-19 02:11:49,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:11:49,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853831091] [2022-01-19 02:11:49,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:11:49,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:11:49,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:11:49,641 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 02:11:49,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:11:49,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853831091] [2022-01-19 02:11:49,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853831091] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:11:49,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89777378] [2022-01-19 02:11:49,642 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 02:11:49,642 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:11:49,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:11:49,643 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:11:49,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-19 02:11:49,736 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 02:11:49,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:11:49,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-19 02:11:49,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:11:49,896 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 02:11:49,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:11:50,030 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 02:11:50,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89777378] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:11:50,030 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:11:50,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 8 [2022-01-19 02:11:50,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226431009] [2022-01-19 02:11:50,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:11:50,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 02:11:50,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:11:50,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 02:11:50,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-19 02:11:50,032 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 154 [2022-01-19 02:11:50,032 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 445 transitions, 5019 flow. Second operand has 8 states, 8 states have (on average 129.625) internal successors, (1037), 8 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:50,032 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:11:50,032 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 154 [2022-01-19 02:11:50,032 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:11:52,602 INFO L129 PetriNetUnfolder]: 4753/15236 cut-off events. [2022-01-19 02:11:52,603 INFO L130 PetriNetUnfolder]: For 126660/128594 co-relation queries the response was YES. [2022-01-19 02:11:52,687 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70052 conditions, 15236 events. 4753/15236 cut-off events. For 126660/128594 co-relation queries the response was YES. Maximal size of possible extension queue 825. Compared 178880 event pairs, 837 based on Foata normal form. 269/15014 useless extension candidates. Maximal degree in co-relation 69970. Up to 2539 conditions per place. [2022-01-19 02:11:52,727 INFO L132 encePairwiseOnDemand]: 146/154 looper letters, 373 selfloop transitions, 41 changer transitions 22/677 dead transitions. [2022-01-19 02:11:52,727 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 677 transitions, 9143 flow [2022-01-19 02:11:52,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 02:11:52,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 02:11:52,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1365 transitions. [2022-01-19 02:11:52,728 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8863636363636364 [2022-01-19 02:11:52,728 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1365 transitions. [2022-01-19 02:11:52,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1365 transitions. [2022-01-19 02:11:52,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:11:52,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1365 transitions. [2022-01-19 02:11:52,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 136.5) internal successors, (1365), 10 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:52,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 154.0) internal successors, (1694), 11 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:52,730 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 154.0) internal successors, (1694), 11 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:52,730 INFO L186 Difference]: Start difference. First operand has 336 places, 445 transitions, 5019 flow. Second operand 10 states and 1365 transitions. [2022-01-19 02:11:52,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 677 transitions, 9143 flow [2022-01-19 02:11:53,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 677 transitions, 9115 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-01-19 02:11:53,321 INFO L242 Difference]: Finished difference. Result has 350 places, 470 transitions, 5391 flow [2022-01-19 02:11:53,321 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=5004, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5391, PETRI_PLACES=350, PETRI_TRANSITIONS=470} [2022-01-19 02:11:53,321 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 209 predicate places. [2022-01-19 02:11:53,321 INFO L470 AbstractCegarLoop]: Abstraction has has 350 places, 470 transitions, 5391 flow [2022-01-19 02:11:53,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 129.625) internal successors, (1037), 8 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:53,322 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:11:53,322 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:11:53,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-19 02:11:53,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:11:53,541 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:11:53,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:11:53,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1711184087, now seen corresponding path program 5 times [2022-01-19 02:11:53,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:11:53,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100130447] [2022-01-19 02:11:53,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:11:53,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:11:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:11:53,599 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 02:11:53,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:11:53,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100130447] [2022-01-19 02:11:53,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100130447] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:11:53,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:11:53,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 02:11:53,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264085460] [2022-01-19 02:11:53,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:11:53,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 02:11:53,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:11:53,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 02:11:53,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-19 02:11:53,602 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 154 [2022-01-19 02:11:53,602 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 470 transitions, 5391 flow. Second operand has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:53,602 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:11:53,603 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 154 [2022-01-19 02:11:53,603 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:11:56,166 INFO L129 PetriNetUnfolder]: 4481/13719 cut-off events. [2022-01-19 02:11:56,166 INFO L130 PetriNetUnfolder]: For 136114/137681 co-relation queries the response was YES. [2022-01-19 02:11:56,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68509 conditions, 13719 events. 4481/13719 cut-off events. For 136114/137681 co-relation queries the response was YES. Maximal size of possible extension queue 758. Compared 155973 event pairs, 1229 based on Foata normal form. 237/13421 useless extension candidates. Maximal degree in co-relation 68420. Up to 3088 conditions per place. [2022-01-19 02:11:56,291 INFO L132 encePairwiseOnDemand]: 147/154 looper letters, 248 selfloop transitions, 29 changer transitions 28/519 dead transitions. [2022-01-19 02:11:56,291 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 519 transitions, 6584 flow [2022-01-19 02:11:56,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 02:11:56,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 02:11:56,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 822 transitions. [2022-01-19 02:11:56,292 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8896103896103896 [2022-01-19 02:11:56,292 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 822 transitions. [2022-01-19 02:11:56,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 822 transitions. [2022-01-19 02:11:56,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:11:56,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 822 transitions. [2022-01-19 02:11:56,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:56,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 154.0) internal successors, (1078), 7 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:56,294 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 154.0) internal successors, (1078), 7 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:56,294 INFO L186 Difference]: Start difference. First operand has 350 places, 470 transitions, 5391 flow. Second operand 6 states and 822 transitions. [2022-01-19 02:11:56,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 519 transitions, 6584 flow [2022-01-19 02:11:56,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 519 transitions, 6494 flow, removed 29 selfloop flow, removed 3 redundant places. [2022-01-19 02:11:56,757 INFO L242 Difference]: Finished difference. Result has 353 places, 393 transitions, 4093 flow [2022-01-19 02:11:56,757 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=4262, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4093, PETRI_PLACES=353, PETRI_TRANSITIONS=393} [2022-01-19 02:11:56,757 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 212 predicate places. [2022-01-19 02:11:56,757 INFO L470 AbstractCegarLoop]: Abstraction has has 353 places, 393 transitions, 4093 flow [2022-01-19 02:11:56,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:11:56,758 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:11:56,758 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:11:56,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-19 02:11:56,758 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:11:56,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:11:56,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1388664998, now seen corresponding path program 17 times [2022-01-19 02:11:56,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:11:56,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564897868] [2022-01-19 02:11:56,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:11:56,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:11:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:11:59,879 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:11:59,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:11:59,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564897868] [2022-01-19 02:11:59,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564897868] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:11:59,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157455134] [2022-01-19 02:11:59,880 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-19 02:11:59,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:11:59,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:11:59,881 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:11:59,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-19 02:11:59,980 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-19 02:11:59,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:11:59,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 50 conjunts are in the unsatisfiable core [2022-01-19 02:11:59,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:12:00,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 02:12:00,831 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 22 [2022-01-19 02:12:01,111 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-19 02:12:01,111 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 17 [2022-01-19 02:12:01,226 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 02:12:01,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:12:01,590 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_822 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_822) c_~queue~0.base))) (or (let ((.cse1 (* c_~start~0 4))) (= (mod (select .cse0 (+ .cse1 c_~queue~0.offset)) 4294967296) (mod (select .cse0 (+ .cse1 c_~queue~0.offset 4)) 4294967296))) (not (= (mod (select .cse0 (+ (* c_~end~0 4) c_~queue~0.offset)) 4294967296) (mod |c_thread2Thread1of1ForFork0_~x~1#1| 4294967296)))))) is different from false [2022-01-19 02:12:01,679 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-19 02:12:01,680 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 130 [2022-01-19 02:12:01,711 INFO L353 Elim1Store]: treesize reduction 26, result has 50.9 percent of original size [2022-01-19 02:12:01,711 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 64 [2022-01-19 02:12:02,798 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-19 02:12:02,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157455134] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 02:12:02,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 02:12:02,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [39, 23] total 73 [2022-01-19 02:12:02,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220937132] [2022-01-19 02:12:02,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:12:02,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-19 02:12:02,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:12:02,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-19 02:12:02,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=4879, Unknown=1, NotChecked=140, Total=5256 [2022-01-19 02:12:02,801 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 154 [2022-01-19 02:12:02,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 393 transitions, 4093 flow. Second operand has 19 states, 19 states have (on average 86.0) internal successors, (1634), 19 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:12:02,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:12:02,802 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 154 [2022-01-19 02:12:02,802 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:12:06,219 INFO L129 PetriNetUnfolder]: 3735/12538 cut-off events. [2022-01-19 02:12:06,219 INFO L130 PetriNetUnfolder]: For 92563/93294 co-relation queries the response was YES. [2022-01-19 02:12:06,305 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55929 conditions, 12538 events. 3735/12538 cut-off events. For 92563/93294 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 146143 event pairs, 1108 based on Foata normal form. 227/12459 useless extension candidates. Maximal degree in co-relation 55837. Up to 4011 conditions per place. [2022-01-19 02:12:06,338 INFO L132 encePairwiseOnDemand]: 131/154 looper letters, 185 selfloop transitions, 92 changer transitions 50/462 dead transitions. [2022-01-19 02:12:06,338 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 462 transitions, 5276 flow [2022-01-19 02:12:06,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 02:12:06,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 02:12:06,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1960 transitions. [2022-01-19 02:12:06,340 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5785123966942148 [2022-01-19 02:12:06,340 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1960 transitions. [2022-01-19 02:12:06,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1960 transitions. [2022-01-19 02:12:06,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:12:06,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1960 transitions. [2022-01-19 02:12:06,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 89.0909090909091) internal successors, (1960), 22 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:12:06,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 154.0) internal successors, (3542), 23 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:12:06,344 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 154.0) internal successors, (3542), 23 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:12:06,344 INFO L186 Difference]: Start difference. First operand has 353 places, 393 transitions, 4093 flow. Second operand 22 states and 1960 transitions. [2022-01-19 02:12:06,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 462 transitions, 5276 flow [2022-01-19 02:12:06,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 462 transitions, 5185 flow, removed 26 selfloop flow, removed 8 redundant places. [2022-01-19 02:12:06,676 INFO L242 Difference]: Finished difference. Result has 370 places, 388 transitions, 4164 flow [2022-01-19 02:12:06,677 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=4026, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4164, PETRI_PLACES=370, PETRI_TRANSITIONS=388} [2022-01-19 02:12:06,677 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 229 predicate places. [2022-01-19 02:12:06,677 INFO L470 AbstractCegarLoop]: Abstraction has has 370 places, 388 transitions, 4164 flow [2022-01-19 02:12:06,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 86.0) internal successors, (1634), 19 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:12:06,677 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:12:06,677 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:12:06,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-01-19 02:12:06,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:12:06,891 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:12:06,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:12:06,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1729833918, now seen corresponding path program 18 times [2022-01-19 02:12:06,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:12:06,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694941769] [2022-01-19 02:12:06,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:12:06,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:12:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:12:09,301 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:12:09,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:12:09,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694941769] [2022-01-19 02:12:09,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694941769] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:12:09,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438630245] [2022-01-19 02:12:09,301 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-19 02:12:09,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:12:09,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:12:09,302 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:12:09,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-19 02:12:09,506 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-01-19 02:12:09,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:12:09,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-19 02:12:09,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:12:09,950 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-19 02:12:09,952 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 17 [2022-01-19 02:12:10,051 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-19 02:12:10,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 02:12:10,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438630245] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:12:10,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 02:12:10,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [37] total 45 [2022-01-19 02:12:10,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289936665] [2022-01-19 02:12:10,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:12:10,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-19 02:12:10,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:12:10,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-19 02:12:10,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1851, Unknown=0, NotChecked=0, Total=1980 [2022-01-19 02:12:10,054 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 154 [2022-01-19 02:12:10,054 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 388 transitions, 4164 flow. Second operand has 12 states, 12 states have (on average 101.66666666666667) internal successors, (1220), 12 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:12:10,054 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:12:10,055 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 154 [2022-01-19 02:12:10,055 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:12:12,415 INFO L129 PetriNetUnfolder]: 3604/12060 cut-off events. [2022-01-19 02:12:12,416 INFO L130 PetriNetUnfolder]: For 92456/93136 co-relation queries the response was YES. [2022-01-19 02:12:12,528 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53794 conditions, 12060 events. 3604/12060 cut-off events. For 92456/93136 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 139417 event pairs, 1157 based on Foata normal form. 190/11845 useless extension candidates. Maximal degree in co-relation 53699. Up to 4302 conditions per place. [2022-01-19 02:12:12,560 INFO L132 encePairwiseOnDemand]: 139/154 looper letters, 188 selfloop transitions, 64 changer transitions 44/447 dead transitions. [2022-01-19 02:12:12,560 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 447 transitions, 5192 flow [2022-01-19 02:12:12,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 02:12:12,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 02:12:12,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1389 transitions. [2022-01-19 02:12:12,562 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6938061938061938 [2022-01-19 02:12:12,562 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1389 transitions. [2022-01-19 02:12:12,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1389 transitions. [2022-01-19 02:12:12,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:12:12,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1389 transitions. [2022-01-19 02:12:12,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 106.84615384615384) internal successors, (1389), 13 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:12:12,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 154.0) internal successors, (2156), 14 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:12:12,564 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 154.0) internal successors, (2156), 14 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:12:12,564 INFO L186 Difference]: Start difference. First operand has 370 places, 388 transitions, 4164 flow. Second operand 13 states and 1389 transitions. [2022-01-19 02:12:12,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 447 transitions, 5192 flow [2022-01-19 02:12:13,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 447 transitions, 4962 flow, removed 24 selfloop flow, removed 23 redundant places. [2022-01-19 02:12:13,018 INFO L242 Difference]: Finished difference. Result has 357 places, 387 transitions, 4061 flow [2022-01-19 02:12:13,018 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=3950, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4061, PETRI_PLACES=357, PETRI_TRANSITIONS=387} [2022-01-19 02:12:13,019 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 216 predicate places. [2022-01-19 02:12:13,019 INFO L470 AbstractCegarLoop]: Abstraction has has 357 places, 387 transitions, 4061 flow [2022-01-19 02:12:13,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 101.66666666666667) internal successors, (1220), 12 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:12:13,019 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:12:13,019 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:12:13,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-01-19 02:12:13,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-01-19 02:12:13,223 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:12:13,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:12:13,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1260172558, now seen corresponding path program 19 times [2022-01-19 02:12:13,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:12:13,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452551537] [2022-01-19 02:12:13,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:12:13,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:12:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:12:18,603 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:12:18,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:12:18,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452551537] [2022-01-19 02:12:18,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452551537] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:12:18,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172170619] [2022-01-19 02:12:18,603 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-19 02:12:18,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:12:18,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:12:18,604 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:12:18,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-19 02:12:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:12:18,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 67 conjunts are in the unsatisfiable core [2022-01-19 02:12:18,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:12:20,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 02:12:20,116 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 23 [2022-01-19 02:12:20,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 02:12:20,535 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:12:20,535 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 17 [2022-01-19 02:12:20,671 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:12:20,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:12:21,417 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-19 02:12:21,417 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 158 treesize of output 159 [2022-01-19 02:12:21,442 INFO L353 Elim1Store]: treesize reduction 26, result has 50.9 percent of original size [2022-01-19 02:12:21,442 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 72 [2022-01-19 02:12:24,386 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:12:24,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172170619] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:12:24,387 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:12:24,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 30, 30] total 91 [2022-01-19 02:12:24,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688035568] [2022-01-19 02:12:24,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:12:24,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-01-19 02:12:24,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:12:24,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-01-19 02:12:24,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=7731, Unknown=1, NotChecked=0, Total=8190 [2022-01-19 02:12:24,390 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 154 [2022-01-19 02:12:24,393 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 387 transitions, 4061 flow. Second operand has 91 states, 91 states have (on average 66.48351648351648) internal successors, (6050), 91 states have internal predecessors, (6050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:12:24,393 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:12:24,393 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 154 [2022-01-19 02:12:24,393 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:12:52,919 INFO L129 PetriNetUnfolder]: 5183/16946 cut-off events. [2022-01-19 02:12:52,919 INFO L130 PetriNetUnfolder]: For 129998/130787 co-relation queries the response was YES. [2022-01-19 02:12:53,097 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75825 conditions, 16946 events. 5183/16946 cut-off events. For 129998/130787 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 204885 event pairs, 1370 based on Foata normal form. 243/16642 useless extension candidates. Maximal degree in co-relation 75732. Up to 2863 conditions per place. [2022-01-19 02:12:53,148 INFO L132 encePairwiseOnDemand]: 115/154 looper letters, 237 selfloop transitions, 202 changer transitions 146/690 dead transitions. [2022-01-19 02:12:53,148 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 690 transitions, 8027 flow [2022-01-19 02:12:53,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-19 02:12:53,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2022-01-19 02:12:53,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 5814 transitions. [2022-01-19 02:12:53,152 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.44415584415584414 [2022-01-19 02:12:53,152 INFO L72 ComplementDD]: Start complementDD. Operand 85 states and 5814 transitions. [2022-01-19 02:12:53,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 85 states and 5814 transitions. [2022-01-19 02:12:53,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:12:53,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 85 states and 5814 transitions. [2022-01-19 02:12:53,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 86 states, 85 states have (on average 68.4) internal successors, (5814), 85 states have internal predecessors, (5814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:12:53,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 86 states, 86 states have (on average 154.0) internal successors, (13244), 86 states have internal predecessors, (13244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:12:53,168 INFO L81 ComplementDD]: Finished complementDD. Result has 86 states, 86 states have (on average 154.0) internal successors, (13244), 86 states have internal predecessors, (13244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:12:53,168 INFO L186 Difference]: Start difference. First operand has 357 places, 387 transitions, 4061 flow. Second operand 85 states and 5814 transitions. [2022-01-19 02:12:53,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 690 transitions, 8027 flow [2022-01-19 02:12:53,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 690 transitions, 7745 flow, removed 40 selfloop flow, removed 11 redundant places. [2022-01-19 02:12:53,846 INFO L242 Difference]: Finished difference. Result has 459 places, 447 transitions, 5440 flow [2022-01-19 02:12:53,846 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=3908, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=85, PETRI_FLOW=5440, PETRI_PLACES=459, PETRI_TRANSITIONS=447} [2022-01-19 02:12:53,846 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 318 predicate places. [2022-01-19 02:12:53,846 INFO L470 AbstractCegarLoop]: Abstraction has has 459 places, 447 transitions, 5440 flow [2022-01-19 02:12:53,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 66.48351648351648) internal successors, (6050), 91 states have internal predecessors, (6050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:12:53,847 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:12:53,847 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:12:53,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-01-19 02:12:54,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-01-19 02:12:54,050 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:12:54,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:12:54,050 INFO L85 PathProgramCache]: Analyzing trace with hash 669369824, now seen corresponding path program 20 times [2022-01-19 02:12:54,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:12:54,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084676381] [2022-01-19 02:12:54,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:12:54,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:12:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:12:57,806 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:12:57,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:12:57,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084676381] [2022-01-19 02:12:57,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084676381] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:12:57,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562453735] [2022-01-19 02:12:57,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 02:12:57,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:12:57,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:12:57,808 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:12:57,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-01-19 02:12:57,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-19 02:12:57,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:12:57,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 40 conjunts are in the unsatisfiable core [2022-01-19 02:12:57,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:12:58,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 02:12:58,632 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 23 [2022-01-19 02:12:58,856 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-19 02:12:58,856 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 17 [2022-01-19 02:12:58,980 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-19 02:12:58,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 02:12:58,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562453735] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:12:58,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 02:12:58,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [40] total 55 [2022-01-19 02:12:58,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745767657] [2022-01-19 02:12:58,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:12:58,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-19 02:12:58,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:12:58,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-19 02:12:58,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=2820, Unknown=0, NotChecked=0, Total=2970 [2022-01-19 02:12:58,982 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 154 [2022-01-19 02:12:58,983 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 447 transitions, 5440 flow. Second operand has 19 states, 19 states have (on average 86.0) internal successors, (1634), 19 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:12:58,983 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:12:58,983 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 154 [2022-01-19 02:12:58,983 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:13:03,014 INFO L129 PetriNetUnfolder]: 4400/13944 cut-off events. [2022-01-19 02:13:03,015 INFO L130 PetriNetUnfolder]: For 140362/141124 co-relation queries the response was YES. [2022-01-19 02:13:03,137 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69806 conditions, 13944 events. 4400/13944 cut-off events. For 140362/141124 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 160177 event pairs, 1005 based on Foata normal form. 252/13770 useless extension candidates. Maximal degree in co-relation 69684. Up to 4060 conditions per place. [2022-01-19 02:13:03,181 INFO L132 encePairwiseOnDemand]: 132/154 looper letters, 231 selfloop transitions, 86 changer transitions 57/515 dead transitions. [2022-01-19 02:13:03,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 515 transitions, 6747 flow [2022-01-19 02:13:03,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 02:13:03,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 02:13:03,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1872 transitions. [2022-01-19 02:13:03,184 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5788497217068646 [2022-01-19 02:13:03,184 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1872 transitions. [2022-01-19 02:13:03,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1872 transitions. [2022-01-19 02:13:03,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:13:03,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1872 transitions. [2022-01-19 02:13:03,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.14285714285714) internal successors, (1872), 21 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:13:03,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 154.0) internal successors, (3388), 22 states have internal predecessors, (3388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:13:03,231 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 154.0) internal successors, (3388), 22 states have internal predecessors, (3388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:13:03,231 INFO L186 Difference]: Start difference. First operand has 459 places, 447 transitions, 5440 flow. Second operand 21 states and 1872 transitions. [2022-01-19 02:13:03,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 515 transitions, 6747 flow [2022-01-19 02:13:03,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 515 transitions, 6366 flow, removed 79 selfloop flow, removed 64 redundant places. [2022-01-19 02:13:03,837 INFO L242 Difference]: Finished difference. Result has 398 places, 435 transitions, 5079 flow [2022-01-19 02:13:03,837 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=5101, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5079, PETRI_PLACES=398, PETRI_TRANSITIONS=435} [2022-01-19 02:13:03,838 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 257 predicate places. [2022-01-19 02:13:03,838 INFO L470 AbstractCegarLoop]: Abstraction has has 398 places, 435 transitions, 5079 flow [2022-01-19 02:13:03,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 86.0) internal successors, (1634), 19 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:13:03,838 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:13:03,838 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:13:03,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-01-19 02:13:04,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-01-19 02:13:04,040 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:13:04,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:13:04,040 INFO L85 PathProgramCache]: Analyzing trace with hash -2110158384, now seen corresponding path program 21 times [2022-01-19 02:13:04,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:13:04,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509787356] [2022-01-19 02:13:04,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:13:04,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:13:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:13:06,878 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:13:06,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:13:06,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509787356] [2022-01-19 02:13:06,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509787356] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:13:06,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108562798] [2022-01-19 02:13:06,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 02:13:06,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:13:06,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:13:06,879 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:13:06,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-01-19 02:13:07,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-01-19 02:13:07,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:13:07,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-19 02:13:07,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:13:07,516 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-19 02:13:07,517 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 17 [2022-01-19 02:13:07,631 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-19 02:13:07,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 02:13:07,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108562798] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:13:07,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 02:13:07,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [39] total 47 [2022-01-19 02:13:07,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139195084] [2022-01-19 02:13:07,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:13:07,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-19 02:13:07,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:13:07,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-19 02:13:07,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=2022, Unknown=0, NotChecked=0, Total=2162 [2022-01-19 02:13:07,633 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 154 [2022-01-19 02:13:07,634 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 435 transitions, 5079 flow. Second operand has 12 states, 12 states have (on average 101.66666666666667) internal successors, (1220), 12 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:13:07,634 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:13:07,634 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 154 [2022-01-19 02:13:07,634 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:13:10,604 INFO L129 PetriNetUnfolder]: 4106/12959 cut-off events. [2022-01-19 02:13:10,604 INFO L130 PetriNetUnfolder]: For 125415/126207 co-relation queries the response was YES. [2022-01-19 02:13:10,712 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64625 conditions, 12959 events. 4106/12959 cut-off events. For 125415/126207 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 146093 event pairs, 1020 based on Foata normal form. 195/12724 useless extension candidates. Maximal degree in co-relation 64520. Up to 4062 conditions per place. [2022-01-19 02:13:10,755 INFO L132 encePairwiseOnDemand]: 140/154 looper letters, 234 selfloop transitions, 57 changer transitions 46/497 dead transitions. [2022-01-19 02:13:10,755 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 497 transitions, 6254 flow [2022-01-19 02:13:10,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 02:13:10,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 02:13:10,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1386 transitions. [2022-01-19 02:13:10,756 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2022-01-19 02:13:10,756 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1386 transitions. [2022-01-19 02:13:10,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1386 transitions. [2022-01-19 02:13:10,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:13:10,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1386 transitions. [2022-01-19 02:13:10,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 106.61538461538461) internal successors, (1386), 13 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:13:10,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 154.0) internal successors, (2156), 14 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:13:10,759 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 154.0) internal successors, (2156), 14 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:13:10,759 INFO L186 Difference]: Start difference. First operand has 398 places, 435 transitions, 5079 flow. Second operand 13 states and 1386 transitions. [2022-01-19 02:13:10,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 497 transitions, 6254 flow [2022-01-19 02:13:11,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 497 transitions, 5968 flow, removed 20 selfloop flow, removed 20 redundant places. [2022-01-19 02:13:11,312 INFO L242 Difference]: Finished difference. Result has 387 places, 436 transitions, 4946 flow [2022-01-19 02:13:11,313 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=4810, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4946, PETRI_PLACES=387, PETRI_TRANSITIONS=436} [2022-01-19 02:13:11,313 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 246 predicate places. [2022-01-19 02:13:11,314 INFO L470 AbstractCegarLoop]: Abstraction has has 387 places, 436 transitions, 4946 flow [2022-01-19 02:13:11,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 101.66666666666667) internal successors, (1220), 12 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:13:11,314 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:13:11,314 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:13:11,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-01-19 02:13:11,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:13:11,515 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:13:11,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:13:11,515 INFO L85 PathProgramCache]: Analyzing trace with hash 979966734, now seen corresponding path program 22 times [2022-01-19 02:13:11,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:13:11,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109438912] [2022-01-19 02:13:11,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:13:11,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:13:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:13:15,640 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:13:15,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:13:15,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109438912] [2022-01-19 02:13:15,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109438912] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:13:15,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694183506] [2022-01-19 02:13:15,641 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 02:13:15,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:13:15,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:13:15,642 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:13:15,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-01-19 02:13:15,751 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 02:13:15,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:13:15,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-19 02:13:15,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:13:16,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 02:13:16,384 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 22 [2022-01-19 02:13:16,667 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-19 02:13:16,667 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 17 [2022-01-19 02:13:16,819 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-19 02:13:16,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 02:13:16,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694183506] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:13:16,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 02:13:16,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [40] total 55 [2022-01-19 02:13:16,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788786011] [2022-01-19 02:13:16,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:13:16,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-19 02:13:16,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:13:16,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-19 02:13:16,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2821, Unknown=0, NotChecked=0, Total=2970 [2022-01-19 02:13:16,821 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 154 [2022-01-19 02:13:16,822 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 436 transitions, 4946 flow. Second operand has 19 states, 19 states have (on average 86.0) internal successors, (1634), 19 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:13:16,822 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:13:16,822 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 154 [2022-01-19 02:13:16,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:13:20,251 INFO L129 PetriNetUnfolder]: 4148/12984 cut-off events. [2022-01-19 02:13:20,251 INFO L130 PetriNetUnfolder]: For 123891/124628 co-relation queries the response was YES. [2022-01-19 02:13:20,383 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64566 conditions, 12984 events. 4148/12984 cut-off events. For 123891/124628 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 145987 event pairs, 1011 based on Foata normal form. 210/12734 useless extension candidates. Maximal degree in co-relation 64461. Up to 4053 conditions per place. [2022-01-19 02:13:20,433 INFO L132 encePairwiseOnDemand]: 132/154 looper letters, 236 selfloop transitions, 71 changer transitions 48/496 dead transitions. [2022-01-19 02:13:20,434 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 496 transitions, 6118 flow [2022-01-19 02:13:20,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 02:13:20,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 02:13:20,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1868 transitions. [2022-01-19 02:13:20,435 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.577612863327149 [2022-01-19 02:13:20,435 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1868 transitions. [2022-01-19 02:13:20,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1868 transitions. [2022-01-19 02:13:20,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:13:20,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1868 transitions. [2022-01-19 02:13:20,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 88.95238095238095) internal successors, (1868), 21 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:13:20,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 154.0) internal successors, (3388), 22 states have internal predecessors, (3388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:13:20,439 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 154.0) internal successors, (3388), 22 states have internal predecessors, (3388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:13:20,439 INFO L186 Difference]: Start difference. First operand has 387 places, 436 transitions, 4946 flow. Second operand 21 states and 1868 transitions. [2022-01-19 02:13:20,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 496 transitions, 6118 flow [2022-01-19 02:13:20,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 496 transitions, 5895 flow, removed 38 selfloop flow, removed 11 redundant places. [2022-01-19 02:13:20,929 INFO L242 Difference]: Finished difference. Result has 398 places, 433 transitions, 4869 flow [2022-01-19 02:13:20,929 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=4745, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4869, PETRI_PLACES=398, PETRI_TRANSITIONS=433} [2022-01-19 02:13:20,929 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 257 predicate places. [2022-01-19 02:13:20,929 INFO L470 AbstractCegarLoop]: Abstraction has has 398 places, 433 transitions, 4869 flow [2022-01-19 02:13:20,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 86.0) internal successors, (1634), 19 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:13:20,930 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:13:20,930 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:13:20,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-01-19 02:13:21,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:13:21,133 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:13:21,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:13:21,133 INFO L85 PathProgramCache]: Analyzing trace with hash 822525752, now seen corresponding path program 23 times [2022-01-19 02:13:21,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:13:21,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108855538] [2022-01-19 02:13:21,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:13:21,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:13:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:13:24,415 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:13:24,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:13:24,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108855538] [2022-01-19 02:13:24,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108855538] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:13:24,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842160218] [2022-01-19 02:13:24,415 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-19 02:13:24,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:13:24,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:13:24,416 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:13:24,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-01-19 02:13:24,517 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-19 02:13:24,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:13:24,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 50 conjunts are in the unsatisfiable core [2022-01-19 02:13:24,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:13:25,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 02:13:25,469 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 34 treesize of output 34 [2022-01-19 02:13:25,618 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-19 02:13:25,619 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 17 [2022-01-19 02:13:25,756 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 02:13:25,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:13:26,016 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1066 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1066) c_~queue~0.base)) (.cse1 (* c_~start~0 4))) (= (mod (select .cse0 (+ .cse1 c_~queue~0.offset)) 4294967296) (mod (select .cse0 (+ .cse1 c_~queue~0.offset 4)) 4294967296)))) is different from false [2022-01-19 02:13:26,278 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-19 02:13:26,279 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 85 treesize of output 103 [2022-01-19 02:13:26,288 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-19 02:13:26,289 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 11 [2022-01-19 02:13:27,497 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-19 02:13:27,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842160218] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 02:13:27,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 02:13:27,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [40, 23] total 74 [2022-01-19 02:13:27,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054803382] [2022-01-19 02:13:27,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:13:27,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-19 02:13:27,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:13:27,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-19 02:13:27,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=5031, Unknown=1, NotChecked=142, Total=5402 [2022-01-19 02:13:27,499 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 154 [2022-01-19 02:13:27,500 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 433 transitions, 4869 flow. Second operand has 19 states, 19 states have (on average 86.0) internal successors, (1634), 19 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:13:27,500 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:13:27,500 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 154 [2022-01-19 02:13:27,500 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:13:30,998 INFO L129 PetriNetUnfolder]: 4093/12877 cut-off events. [2022-01-19 02:13:30,998 INFO L130 PetriNetUnfolder]: For 120303/121120 co-relation queries the response was YES. [2022-01-19 02:13:31,121 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63520 conditions, 12877 events. 4093/12877 cut-off events. For 120303/121120 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 144772 event pairs, 1021 based on Foata normal form. 193/12635 useless extension candidates. Maximal degree in co-relation 63413. Up to 4037 conditions per place. [2022-01-19 02:13:31,163 INFO L132 encePairwiseOnDemand]: 132/154 looper letters, 236 selfloop transitions, 66 changer transitions 44/487 dead transitions. [2022-01-19 02:13:31,163 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 487 transitions, 5943 flow [2022-01-19 02:13:31,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 02:13:31,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 02:13:31,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1945 transitions. [2022-01-19 02:13:31,164 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5740850059031877 [2022-01-19 02:13:31,165 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1945 transitions. [2022-01-19 02:13:31,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1945 transitions. [2022-01-19 02:13:31,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:13:31,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1945 transitions. [2022-01-19 02:13:31,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 88.4090909090909) internal successors, (1945), 22 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:13:31,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 154.0) internal successors, (3542), 23 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:13:31,168 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 154.0) internal successors, (3542), 23 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:13:31,168 INFO L186 Difference]: Start difference. First operand has 398 places, 433 transitions, 4869 flow. Second operand 22 states and 1945 transitions. [2022-01-19 02:13:31,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 487 transitions, 5943 flow [2022-01-19 02:13:31,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 487 transitions, 5740 flow, removed 17 selfloop flow, removed 25 redundant places. [2022-01-19 02:13:31,607 INFO L242 Difference]: Finished difference. Result has 395 places, 428 transitions, 4741 flow [2022-01-19 02:13:31,608 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=4678, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4741, PETRI_PLACES=395, PETRI_TRANSITIONS=428} [2022-01-19 02:13:31,608 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 254 predicate places. [2022-01-19 02:13:31,608 INFO L470 AbstractCegarLoop]: Abstraction has has 395 places, 428 transitions, 4741 flow [2022-01-19 02:13:31,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 86.0) internal successors, (1634), 19 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:13:31,608 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:13:31,608 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:13:31,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-01-19 02:13:31,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-01-19 02:13:31,812 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:13:31,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:13:31,812 INFO L85 PathProgramCache]: Analyzing trace with hash 932294212, now seen corresponding path program 1 times [2022-01-19 02:13:31,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:13:31,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818931684] [2022-01-19 02:13:31,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:13:31,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:13:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:13:33,971 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:13:33,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:13:33,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818931684] [2022-01-19 02:13:33,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818931684] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:13:33,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619703348] [2022-01-19 02:13:33,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:13:33,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:13:33,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:13:33,974 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:13:33,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-01-19 02:13:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:13:34,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-19 02:13:34,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:13:35,362 INFO L353 Elim1Store]: treesize reduction 93, result has 7.0 percent of original size [2022-01-19 02:13:35,362 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 20 [2022-01-19 02:13:35,456 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:13:35,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:13:36,071 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-19 02:13:36,071 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 76 Received shutdown request... [2022-01-19 02:22:34,156 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-01-19 02:22:34,159 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 02:22:34,172 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 02:22:34,173 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 [2022-01-19 02:22:34,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-01-19 02:22:34,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-01-19 02:22:34,360 WARN L594 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 139 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 12 for 29ms.. [2022-01-19 02:22:34,362 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-19 02:22:34,362 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-19 02:22:34,362 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-19 02:22:34,365 INFO L732 BasicCegarLoop]: Path program histogram: [23, 5, 2, 1, 1, 1] [2022-01-19 02:22:34,366 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 02:22:34,366 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 02:22:34,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 02:22:34 BasicIcfg [2022-01-19 02:22:34,368 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 02:22:34,368 INFO L158 Benchmark]: Toolchain (without parser) took 820927.35ms. Allocated memory was 369.1MB in the beginning and 7.3GB in the end (delta: 6.9GB). Free memory was 316.8MB in the beginning and 5.9GB in the end (delta: -5.5GB). Peak memory consumption was 1.8GB. Max. memory is 16.0GB. [2022-01-19 02:22:34,368 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 369.1MB. Free memory is still 333.0MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 02:22:34,369 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.18ms. Allocated memory is still 369.1MB. Free memory was 316.6MB in the beginning and 341.6MB in the end (delta: -24.9MB). Peak memory consumption was 19.6MB. Max. memory is 16.0GB. [2022-01-19 02:22:34,369 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.45ms. Allocated memory is still 369.1MB. Free memory was 341.6MB in the beginning and 339.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 02:22:34,369 INFO L158 Benchmark]: Boogie Preprocessor took 32.00ms. Allocated memory is still 369.1MB. Free memory was 339.4MB in the beginning and 336.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 02:22:34,369 INFO L158 Benchmark]: RCFGBuilder took 437.17ms. Allocated memory is still 369.1MB. Free memory was 336.8MB in the beginning and 314.3MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2022-01-19 02:22:34,369 INFO L158 Benchmark]: TraceAbstraction took 820163.78ms. Allocated memory was 369.1MB in the beginning and 7.3GB in the end (delta: 6.9GB). Free memory was 313.3MB in the beginning and 5.9GB in the end (delta: -5.5GB). Peak memory consumption was 1.8GB. Max. memory is 16.0GB. [2022-01-19 02:22:34,370 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 369.1MB. Free memory is still 333.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 246.18ms. Allocated memory is still 369.1MB. Free memory was 316.6MB in the beginning and 341.6MB in the end (delta: -24.9MB). Peak memory consumption was 19.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 42.45ms. Allocated memory is still 369.1MB. Free memory was 341.6MB in the beginning and 339.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 32.00ms. Allocated memory is still 369.1MB. Free memory was 339.4MB in the beginning and 336.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 437.17ms. Allocated memory is still 369.1MB. Free memory was 336.8MB in the beginning and 314.3MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 820163.78ms. Allocated memory was 369.1MB in the beginning and 7.3GB in the end (delta: 6.9GB). Free memory was 313.3MB in the beginning and 5.9GB in the end (delta: -5.5GB). Peak memory consumption was 1.8GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 139 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 12 for 29ms.. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 139 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 12 for 29ms.. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 139 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 12 for 29ms.. - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 139 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 12 for 29ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 180 locations, 4 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: 820.1s, OverallIterations: 33, TraceHistogramMax: 3, PathProgramHistogramMax: 23, EmptinessCheckTime: 0.0s, AutomataDifference: 169.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14158 SdHoareTripleChecker+Valid, 22.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14158 mSDsluCounter, 17379 SdHoareTripleChecker+Invalid, 19.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 4405 IncrementalHoareTripleChecker+Unchecked, 26803 mSDsCounter, 2598 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40415 IncrementalHoareTripleChecker+Invalid, 47418 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2598 mSolverCounterUnsat, 1011 mSDtfsCounter, 40415 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6268 GetRequests, 4323 SyntacticMatches, 37 SemanticMatches, 1908 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 46977 ImplicationChecksByTransitivity, 125.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10751occurred in iteration=15, InterpolantAutomatonStates: 788, 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: 0.4s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 98.8s InterpolantComputationTime, 7402 NumberOfCodeBlocks, 7227 NumberOfCodeBlocksAsserted, 71 NumberOfCheckSat, 8893 ConstructedInterpolants, 140 QuantifiedInterpolants, 195499 SizeOfPredicates, 535 NumberOfNonLiveVariables, 7727 ConjunctsInSsa, 961 ConjunctsInUnsatCore, 69 InterpolantComputations, 23 PerfectInterpolantSequences, 343/846 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