/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/test-easy10.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 02:51:46,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 02:51:46,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 02:51:46,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 02:51:46,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 02:51:46,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 02:51:46,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 02:51:46,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 02:51:46,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 02:51:46,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 02:51:46,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 02:51:46,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 02:51:46,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 02:51:46,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 02:51:46,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 02:51:46,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 02:51:46,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 02:51:46,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 02:51:46,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 02:51:46,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 02:51:46,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 02:51:46,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 02:51:46,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 02:51:46,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 02:51:46,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 02:51:46,715 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 02:51:46,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 02:51:46,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 02:51:46,717 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 02:51:46,717 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 02:51:46,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 02:51:46,718 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 02:51:46,719 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 02:51:46,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 02:51:46,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 02:51:46,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 02:51:46,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 02:51:46,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 02:51:46,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 02:51:46,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 02:51:46,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 02:51:46,722 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 02:51:46,746 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 02:51:46,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 02:51:46,747 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 02:51:46,747 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 02:51:46,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 02:51:46,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 02:51:46,748 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 02:51:46,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 02:51:46,748 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 02:51:46,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 02:51:46,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 02:51:46,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 02:51:46,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 02:51:46,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 02:51:46,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 02:51:46,749 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 02:51:46,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 02:51:46,749 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 02:51:46,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 02:51:46,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 02:51:46,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 02:51:46,750 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 02:51:46,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 02:51:46,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 02:51:46,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 02:51:46,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 02:51:46,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 02:51:46,751 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 02:51:46,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 02:51:46,751 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 02:51:46,751 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 02:51:46,751 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 02:51:46,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 02:51:46,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 02:51:46,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 02:51:46,935 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 02:51:46,936 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 02:51:46,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy10.wvr.c [2022-01-19 02:51:46,987 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c475d359/b3f65d057f3b4dbab05bcc4450d143c5/FLAG834eb0aee [2022-01-19 02:51:47,319 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 02:51:47,320 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy10.wvr.c [2022-01-19 02:51:47,324 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c475d359/b3f65d057f3b4dbab05bcc4450d143c5/FLAG834eb0aee [2022-01-19 02:51:47,762 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c475d359/b3f65d057f3b4dbab05bcc4450d143c5 [2022-01-19 02:51:47,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 02:51:47,765 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 02:51:47,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 02:51:47,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 02:51:47,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 02:51:47,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 02:51:47" (1/1) ... [2022-01-19 02:51:47,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58b94b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:51:47, skipping insertion in model container [2022-01-19 02:51:47,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 02:51:47" (1/1) ... [2022-01-19 02:51:47,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 02:51:47,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 02:51:47,929 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/test-easy10.wvr.c[3907,3920] [2022-01-19 02:51:47,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 02:51:47,936 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 02:51:47,955 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/test-easy10.wvr.c[3907,3920] [2022-01-19 02:51:47,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 02:51:47,964 INFO L208 MainTranslator]: Completed translation [2022-01-19 02:51:47,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:51:47 WrapperNode [2022-01-19 02:51:47,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 02:51:47,965 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 02:51:47,965 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 02:51:47,965 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 02:51:47,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:51:47" (1/1) ... [2022-01-19 02:51:47,974 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:51:47" (1/1) ... [2022-01-19 02:51:47,989 INFO L137 Inliner]: procedures = 23, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 188 [2022-01-19 02:51:47,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 02:51:47,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 02:51:47,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 02:51:47,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 02:51:47,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:51:47" (1/1) ... [2022-01-19 02:51:47,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:51:47" (1/1) ... [2022-01-19 02:51:47,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:51:47" (1/1) ... [2022-01-19 02:51:47,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:51:47" (1/1) ... [2022-01-19 02:51:48,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:51:47" (1/1) ... [2022-01-19 02:51:48,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:51:47" (1/1) ... [2022-01-19 02:51:48,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:51:47" (1/1) ... [2022-01-19 02:51:48,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 02:51:48,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 02:51:48,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 02:51:48,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 02:51:48,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:51:47" (1/1) ... [2022-01-19 02:51:48,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 02:51:48,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:51:48,039 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 02:51:48,044 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 02:51:48,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 02:51:48,061 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 02:51:48,061 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 02:51:48,061 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 02:51:48,062 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 02:51:48,062 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 02:51:48,062 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 02:51:48,062 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-01-19 02:51:48,062 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-01-19 02:51:48,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 02:51:48,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 02:51:48,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 02:51:48,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 02:51:48,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 02:51:48,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 02:51:48,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 02:51:48,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 02:51:48,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 02:51:48,063 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 02:51:48,116 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 02:51:48,117 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 02:51:48,282 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 02:51:48,336 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 02:51:48,337 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 02:51:48,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 02:51:48 BoogieIcfgContainer [2022-01-19 02:51:48,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 02:51:48,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 02:51:48,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 02:51:48,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 02:51:48,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 02:51:47" (1/3) ... [2022-01-19 02:51:48,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4386912f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 02:51:48, skipping insertion in model container [2022-01-19 02:51:48,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:51:47" (2/3) ... [2022-01-19 02:51:48,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4386912f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 02:51:48, skipping insertion in model container [2022-01-19 02:51:48,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 02:51:48" (3/3) ... [2022-01-19 02:51:48,345 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2022-01-19 02:51:48,348 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 02:51:48,348 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 02:51:48,348 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 02:51:48,397 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,397 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,397 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,397 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,398 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,398 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,398 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,398 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,399 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,399 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,400 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,400 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,400 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,400 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,401 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,401 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,401 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,401 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,402 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,402 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,402 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,403 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,403 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,403 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,403 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,404 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,404 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,404 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,405 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,405 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,405 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,405 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,407 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,407 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,407 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,407 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,408 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,408 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,408 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,408 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,409 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,409 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,409 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,409 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,410 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,410 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,410 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,410 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:51:48,429 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-01-19 02:51:48,462 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 02:51:48,468 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 02:51:48,468 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-19 02:51:48,476 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 138 transitions, 308 flow [2022-01-19 02:51:48,524 INFO L129 PetriNetUnfolder]: 2/134 cut-off events. [2022-01-19 02:51:48,524 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-01-19 02:51:48,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 134 events. 2/134 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2022-01-19 02:51:48,527 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 138 transitions, 308 flow [2022-01-19 02:51:48,530 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 121 transitions, 266 flow [2022-01-19 02:51:48,559 INFO L129 PetriNetUnfolder]: 2/120 cut-off events. [2022-01-19 02:51:48,559 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-01-19 02:51:48,559 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:51:48,560 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] [2022-01-19 02:51:48,560 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 02:51:48,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:51:48,564 INFO L85 PathProgramCache]: Analyzing trace with hash -936094455, now seen corresponding path program 1 times [2022-01-19 02:51:48,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:51:48,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944029225] [2022-01-19 02:51:48,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:51:48,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:51:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:51:49,046 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 02:51:49,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:51:49,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944029225] [2022-01-19 02:51:49,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944029225] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:51:49,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:51:49,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 02:51:49,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43605249] [2022-01-19 02:51:49,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:51:49,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 02:51:49,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:51:49,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 02:51:49,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 02:51:49,081 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-01-19 02:51:49,087 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 121 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 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 02:51:49,087 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:51:49,087 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-01-19 02:51:49,088 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:51:49,185 INFO L129 PetriNetUnfolder]: 58/329 cut-off events. [2022-01-19 02:51:49,186 INFO L130 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-01-19 02:51:49,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 329 events. 58/329 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1238 event pairs, 13 based on Foata normal form. 10/330 useless extension candidates. Maximal degree in co-relation 376. Up to 100 conditions per place. [2022-01-19 02:51:49,197 INFO L132 encePairwiseOnDemand]: 133/138 looper letters, 16 selfloop transitions, 2 changer transitions 2/123 dead transitions. [2022-01-19 02:51:49,197 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 123 transitions, 312 flow [2022-01-19 02:51:49,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 02:51:49,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 02:51:49,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2022-01-19 02:51:49,210 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.927536231884058 [2022-01-19 02:51:49,210 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2022-01-19 02:51:49,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2022-01-19 02:51:49,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:51:49,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2022-01-19 02:51:49,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 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 02:51:49,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 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 02:51:49,227 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 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 02:51:49,228 INFO L186 Difference]: Start difference. First operand has 132 places, 121 transitions, 266 flow. Second operand 3 states and 384 transitions. [2022-01-19 02:51:49,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 123 transitions, 312 flow [2022-01-19 02:51:49,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 123 transitions, 292 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-01-19 02:51:49,236 INFO L242 Difference]: Finished difference. Result has 127 places, 117 transitions, 250 flow [2022-01-19 02:51:49,237 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=127, PETRI_TRANSITIONS=117} [2022-01-19 02:51:49,240 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, -5 predicate places. [2022-01-19 02:51:49,240 INFO L470 AbstractCegarLoop]: Abstraction has has 127 places, 117 transitions, 250 flow [2022-01-19 02:51:49,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 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 02:51:49,241 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:51:49,241 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] [2022-01-19 02:51:49,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 02:51:49,241 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 02:51:49,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:51:49,242 INFO L85 PathProgramCache]: Analyzing trace with hash 767252375, now seen corresponding path program 2 times [2022-01-19 02:51:49,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:51:49,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816573858] [2022-01-19 02:51:49,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:51:49,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:51:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:51:50,476 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 02:51:50,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:51:50,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816573858] [2022-01-19 02:51:50,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816573858] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:51:50,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:51:50,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-19 02:51:50,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680870476] [2022-01-19 02:51:50,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:51:50,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-19 02:51:50,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:51:50,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-19 02:51:50,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-01-19 02:51:50,480 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-01-19 02:51:50,481 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 117 transitions, 250 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:51:50,482 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:51:50,482 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-01-19 02:51:50,482 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:51:52,980 INFO L129 PetriNetUnfolder]: 7174/14147 cut-off events. [2022-01-19 02:51:52,980 INFO L130 PetriNetUnfolder]: For 1060/1060 co-relation queries the response was YES. [2022-01-19 02:51:52,999 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25835 conditions, 14147 events. 7174/14147 cut-off events. For 1060/1060 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 124289 event pairs, 973 based on Foata normal form. 1/14098 useless extension candidates. Maximal degree in co-relation 18193. Up to 3730 conditions per place. [2022-01-19 02:51:53,051 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 202 selfloop transitions, 16 changer transitions 13/300 dead transitions. [2022-01-19 02:51:53,051 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 300 transitions, 1129 flow [2022-01-19 02:51:53,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 02:51:53,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 02:51:53,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1592 transitions. [2022-01-19 02:51:53,054 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7210144927536232 [2022-01-19 02:51:53,054 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1592 transitions. [2022-01-19 02:51:53,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1592 transitions. [2022-01-19 02:51:53,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:51:53,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1592 transitions. [2022-01-19 02:51:53,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.5) internal successors, (1592), 16 states have internal predecessors, (1592), 0 states have call successors, (0), 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 02:51:53,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 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 02:51:53,061 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 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 02:51:53,061 INFO L186 Difference]: Start difference. First operand has 127 places, 117 transitions, 250 flow. Second operand 16 states and 1592 transitions. [2022-01-19 02:51:53,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 300 transitions, 1129 flow [2022-01-19 02:51:53,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 300 transitions, 1125 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 02:51:53,071 INFO L242 Difference]: Finished difference. Result has 152 places, 130 transitions, 369 flow [2022-01-19 02:51:53,071 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=369, PETRI_PLACES=152, PETRI_TRANSITIONS=130} [2022-01-19 02:51:53,072 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 20 predicate places. [2022-01-19 02:51:53,072 INFO L470 AbstractCegarLoop]: Abstraction has has 152 places, 130 transitions, 369 flow [2022-01-19 02:51:53,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:51:53,073 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:51:53,073 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] [2022-01-19 02:51:53,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 02:51:53,073 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 02:51:53,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:51:53,074 INFO L85 PathProgramCache]: Analyzing trace with hash 924146363, now seen corresponding path program 3 times [2022-01-19 02:51:53,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:51:53,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193831310] [2022-01-19 02:51:53,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:51:53,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:51:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:51:53,135 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 02:51:53,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:51:53,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193831310] [2022-01-19 02:51:53,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193831310] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:51:53,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:51:53,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 02:51:53,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584562795] [2022-01-19 02:51:53,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:51:53,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 02:51:53,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:51:53,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 02:51:53,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 02:51:53,137 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-01-19 02:51:53,137 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 130 transitions, 369 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 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 02:51:53,137 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:51:53,137 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-01-19 02:51:53,137 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:51:53,308 INFO L129 PetriNetUnfolder]: 283/1649 cut-off events. [2022-01-19 02:51:53,309 INFO L130 PetriNetUnfolder]: For 382/390 co-relation queries the response was YES. [2022-01-19 02:51:53,313 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2930 conditions, 1649 events. 283/1649 cut-off events. For 382/390 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 14043 event pairs, 199 based on Foata normal form. 17/1556 useless extension candidates. Maximal degree in co-relation 2884. Up to 461 conditions per place. [2022-01-19 02:51:53,316 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 17 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2022-01-19 02:51:53,316 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 134 transitions, 414 flow [2022-01-19 02:51:53,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 02:51:53,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 02:51:53,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2022-01-19 02:51:53,318 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9251207729468599 [2022-01-19 02:51:53,318 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2022-01-19 02:51:53,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2022-01-19 02:51:53,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:51:53,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2022-01-19 02:51:53,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 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 02:51:53,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 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 02:51:53,321 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 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 02:51:53,321 INFO L186 Difference]: Start difference. First operand has 152 places, 130 transitions, 369 flow. Second operand 3 states and 383 transitions. [2022-01-19 02:51:53,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 134 transitions, 414 flow [2022-01-19 02:51:53,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 134 transitions, 401 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-01-19 02:51:53,330 INFO L242 Difference]: Finished difference. Result has 146 places, 129 transitions, 358 flow [2022-01-19 02:51:53,331 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=146, PETRI_TRANSITIONS=129} [2022-01-19 02:51:53,332 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 14 predicate places. [2022-01-19 02:51:53,332 INFO L470 AbstractCegarLoop]: Abstraction has has 146 places, 129 transitions, 358 flow [2022-01-19 02:51:53,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 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 02:51:53,333 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:51:53,335 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] [2022-01-19 02:51:53,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 02:51:53,337 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 02:51:53,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:51:53,339 INFO L85 PathProgramCache]: Analyzing trace with hash 770515071, now seen corresponding path program 4 times [2022-01-19 02:51:53,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:51:53,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462862782] [2022-01-19 02:51:53,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:51:53,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:51:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:51:54,175 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 02:51:54,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:51:54,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462862782] [2022-01-19 02:51:54,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462862782] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:51:54,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:51:54,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-19 02:51:54,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863126092] [2022-01-19 02:51:54,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:51:54,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-19 02:51:54,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:51:54,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-19 02:51:54,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-01-19 02:51:54,178 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-01-19 02:51:54,179 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 129 transitions, 358 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:51:54,179 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:51:54,179 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-01-19 02:51:54,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:51:57,674 INFO L129 PetriNetUnfolder]: 11554/25502 cut-off events. [2022-01-19 02:51:57,674 INFO L130 PetriNetUnfolder]: For 16969/16969 co-relation queries the response was YES. [2022-01-19 02:51:57,755 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60082 conditions, 25502 events. 11554/25502 cut-off events. For 16969/16969 co-relation queries the response was YES. Maximal size of possible extension queue 1357. Compared 270963 event pairs, 2799 based on Foata normal form. 1/25279 useless extension candidates. Maximal degree in co-relation 48006. Up to 6826 conditions per place. [2022-01-19 02:51:57,847 INFO L132 encePairwiseOnDemand]: 119/138 looper letters, 233 selfloop transitions, 30 changer transitions 13/345 dead transitions. [2022-01-19 02:51:57,848 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 345 transitions, 1724 flow [2022-01-19 02:51:57,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 02:51:57,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 02:51:57,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1588 transitions. [2022-01-19 02:51:57,852 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7192028985507246 [2022-01-19 02:51:57,852 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1588 transitions. [2022-01-19 02:51:57,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1588 transitions. [2022-01-19 02:51:57,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:51:57,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1588 transitions. [2022-01-19 02:51:57,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.25) internal successors, (1588), 16 states have internal predecessors, (1588), 0 states have call successors, (0), 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 02:51:57,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 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 02:51:57,859 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 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 02:51:57,859 INFO L186 Difference]: Start difference. First operand has 146 places, 129 transitions, 358 flow. Second operand 16 states and 1588 transitions. [2022-01-19 02:51:57,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 345 transitions, 1724 flow [2022-01-19 02:51:58,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 345 transitions, 1720 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 02:51:58,017 INFO L242 Difference]: Finished difference. Result has 173 places, 153 transitions, 654 flow [2022-01-19 02:51:58,017 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=654, PETRI_PLACES=173, PETRI_TRANSITIONS=153} [2022-01-19 02:51:58,018 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 41 predicate places. [2022-01-19 02:51:58,018 INFO L470 AbstractCegarLoop]: Abstraction has has 173 places, 153 transitions, 654 flow [2022-01-19 02:51:58,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:51:58,019 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:51:58,019 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] [2022-01-19 02:51:58,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 02:51:58,019 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 02:51:58,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:51:58,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1917193115, now seen corresponding path program 5 times [2022-01-19 02:51:58,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:51:58,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161426704] [2022-01-19 02:51:58,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:51:58,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:51:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:51:58,100 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 02:51:58,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:51:58,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161426704] [2022-01-19 02:51:58,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161426704] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:51:58,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:51:58,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 02:51:58,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930907678] [2022-01-19 02:51:58,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:51:58,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 02:51:58,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:51:58,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 02:51:58,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 02:51:58,102 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-01-19 02:51:58,103 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 153 transitions, 654 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 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 02:51:58,103 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:51:58,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-01-19 02:51:58,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:51:58,478 INFO L129 PetriNetUnfolder]: 799/4372 cut-off events. [2022-01-19 02:51:58,478 INFO L130 PetriNetUnfolder]: For 4154/4255 co-relation queries the response was YES. [2022-01-19 02:51:58,495 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9688 conditions, 4372 events. 799/4372 cut-off events. For 4154/4255 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 48895 event pairs, 244 based on Foata normal form. 107/4262 useless extension candidates. Maximal degree in co-relation 9507. Up to 1240 conditions per place. [2022-01-19 02:51:58,504 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 16 selfloop transitions, 2 changer transitions 0/157 dead transitions. [2022-01-19 02:51:58,504 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 157 transitions, 704 flow [2022-01-19 02:51:58,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 02:51:58,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 02:51:58,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2022-01-19 02:51:58,505 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9227053140096618 [2022-01-19 02:51:58,505 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2022-01-19 02:51:58,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2022-01-19 02:51:58,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:51:58,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2022-01-19 02:51:58,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 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 02:51:58,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 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 02:51:58,507 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 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 02:51:58,507 INFO L186 Difference]: Start difference. First operand has 173 places, 153 transitions, 654 flow. Second operand 3 states and 382 transitions. [2022-01-19 02:51:58,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 157 transitions, 704 flow [2022-01-19 02:51:58,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 157 transitions, 688 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-01-19 02:51:58,529 INFO L242 Difference]: Finished difference. Result has 167 places, 153 transitions, 646 flow [2022-01-19 02:51:58,529 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=646, PETRI_PLACES=167, PETRI_TRANSITIONS=153} [2022-01-19 02:51:58,530 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 35 predicate places. [2022-01-19 02:51:58,530 INFO L470 AbstractCegarLoop]: Abstraction has has 167 places, 153 transitions, 646 flow [2022-01-19 02:51:58,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 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 02:51:58,530 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:51:58,530 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] [2022-01-19 02:51:58,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 02:51:58,531 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 02:51:58,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:51:58,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1090793799, now seen corresponding path program 6 times [2022-01-19 02:51:58,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:51:58,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66205093] [2022-01-19 02:51:58,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:51:58,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:51:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:51:59,309 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 02:51:59,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:51:59,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66205093] [2022-01-19 02:51:59,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66205093] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:51:59,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:51:59,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-19 02:51:59,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790572163] [2022-01-19 02:51:59,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:51:59,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-19 02:51:59,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:51:59,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-19 02:51:59,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-01-19 02:51:59,311 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-01-19 02:51:59,329 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 153 transitions, 646 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:51:59,329 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:51:59,329 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-01-19 02:51:59,329 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:52:03,784 INFO L129 PetriNetUnfolder]: 12674/31422 cut-off events. [2022-01-19 02:52:03,784 INFO L130 PetriNetUnfolder]: For 57738/57738 co-relation queries the response was YES. [2022-01-19 02:52:03,893 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88458 conditions, 31422 events. 12674/31422 cut-off events. For 57738/57738 co-relation queries the response was YES. Maximal size of possible extension queue 1904. Compared 367661 event pairs, 4382 based on Foata normal form. 1/31183 useless extension candidates. Maximal degree in co-relation 64247. Up to 6339 conditions per place. [2022-01-19 02:52:03,993 INFO L132 encePairwiseOnDemand]: 121/138 looper letters, 251 selfloop transitions, 52 changer transitions 13/385 dead transitions. [2022-01-19 02:52:03,993 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 385 transitions, 2624 flow [2022-01-19 02:52:03,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 02:52:03,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 02:52:03,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1574 transitions. [2022-01-19 02:52:03,996 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7128623188405797 [2022-01-19 02:52:03,996 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1574 transitions. [2022-01-19 02:52:03,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1574 transitions. [2022-01-19 02:52:03,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:52:03,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1574 transitions. [2022-01-19 02:52:04,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 98.375) internal successors, (1574), 16 states have internal predecessors, (1574), 0 states have call successors, (0), 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 02:52:04,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 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 02:52:04,003 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 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 02:52:04,003 INFO L186 Difference]: Start difference. First operand has 167 places, 153 transitions, 646 flow. Second operand 16 states and 1574 transitions. [2022-01-19 02:52:04,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 385 transitions, 2624 flow [2022-01-19 02:52:04,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 385 transitions, 2620 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 02:52:04,528 INFO L242 Difference]: Finished difference. Result has 195 places, 198 transitions, 1322 flow [2022-01-19 02:52:04,528 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1322, PETRI_PLACES=195, PETRI_TRANSITIONS=198} [2022-01-19 02:52:04,528 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 63 predicate places. [2022-01-19 02:52:04,528 INFO L470 AbstractCegarLoop]: Abstraction has has 195 places, 198 transitions, 1322 flow [2022-01-19 02:52:04,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:52:04,529 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:52:04,529 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] [2022-01-19 02:52:04,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 02:52:04,529 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 02:52:04,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:52:04,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1317266137, now seen corresponding path program 7 times [2022-01-19 02:52:04,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:52:04,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755263782] [2022-01-19 02:52:04,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:52:04,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:52:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:52:05,189 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 02:52:05,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:52:05,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755263782] [2022-01-19 02:52:05,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755263782] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:52:05,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:52:05,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-19 02:52:05,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801375966] [2022-01-19 02:52:05,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:52:05,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-19 02:52:05,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:52:05,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-19 02:52:05,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-01-19 02:52:05,191 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-01-19 02:52:05,192 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 198 transitions, 1322 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:52:05,192 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:52:05,192 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-01-19 02:52:05,192 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:52:12,683 INFO L129 PetriNetUnfolder]: 22659/59467 cut-off events. [2022-01-19 02:52:12,683 INFO L130 PetriNetUnfolder]: For 220057/220079 co-relation queries the response was YES. [2022-01-19 02:52:13,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193145 conditions, 59467 events. 22659/59467 cut-off events. For 220057/220079 co-relation queries the response was YES. Maximal size of possible extension queue 3796. Compared 795204 event pairs, 7423 based on Foata normal form. 5/58566 useless extension candidates. Maximal degree in co-relation 191830. Up to 11532 conditions per place. [2022-01-19 02:52:13,313 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 379 selfloop transitions, 60 changer transitions 8/516 dead transitions. [2022-01-19 02:52:13,314 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 516 transitions, 4816 flow [2022-01-19 02:52:13,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 02:52:13,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 02:52:13,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1599 transitions. [2022-01-19 02:52:13,316 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7241847826086957 [2022-01-19 02:52:13,316 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1599 transitions. [2022-01-19 02:52:13,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1599 transitions. [2022-01-19 02:52:13,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:52:13,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1599 transitions. [2022-01-19 02:52:13,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.9375) internal successors, (1599), 16 states have internal predecessors, (1599), 0 states have call successors, (0), 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 02:52:13,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 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 02:52:13,323 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 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 02:52:13,323 INFO L186 Difference]: Start difference. First operand has 195 places, 198 transitions, 1322 flow. Second operand 16 states and 1599 transitions. [2022-01-19 02:52:13,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 516 transitions, 4816 flow [2022-01-19 02:52:17,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 516 transitions, 4708 flow, removed 54 selfloop flow, removed 4 redundant places. [2022-01-19 02:52:17,119 INFO L242 Difference]: Finished difference. Result has 216 places, 240 transitions, 2097 flow [2022-01-19 02:52:17,120 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=1296, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2097, PETRI_PLACES=216, PETRI_TRANSITIONS=240} [2022-01-19 02:52:17,120 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 84 predicate places. [2022-01-19 02:52:17,120 INFO L470 AbstractCegarLoop]: Abstraction has has 216 places, 240 transitions, 2097 flow [2022-01-19 02:52:17,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:52:17,121 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:52:17,121 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] [2022-01-19 02:52:17,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 02:52:17,121 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 02:52:17,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:52:17,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1815647873, now seen corresponding path program 8 times [2022-01-19 02:52:17,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:52:17,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579441546] [2022-01-19 02:52:17,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:52:17,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:52:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:52:17,181 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 02:52:17,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:52:17,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579441546] [2022-01-19 02:52:17,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579441546] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:52:17,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:52:17,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 02:52:17,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165580673] [2022-01-19 02:52:17,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:52:17,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 02:52:17,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:52:17,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 02:52:17,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 02:52:17,183 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-01-19 02:52:17,183 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 240 transitions, 2097 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 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 02:52:17,183 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:52:17,184 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-01-19 02:52:17,184 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:52:19,104 INFO L129 PetriNetUnfolder]: 2447/16994 cut-off events. [2022-01-19 02:52:19,105 INFO L130 PetriNetUnfolder]: For 58216/59990 co-relation queries the response was YES. [2022-01-19 02:52:19,184 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46613 conditions, 16994 events. 2447/16994 cut-off events. For 58216/59990 co-relation queries the response was YES. Maximal size of possible extension queue 1184. Compared 256301 event pairs, 735 based on Foata normal form. 408/16665 useless extension candidates. Maximal degree in co-relation 45542. Up to 4358 conditions per place. [2022-01-19 02:52:19,214 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 17 selfloop transitions, 2 changer transitions 0/233 dead transitions. [2022-01-19 02:52:19,214 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 233 transitions, 1996 flow [2022-01-19 02:52:19,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 02:52:19,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 02:52:19,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2022-01-19 02:52:19,215 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9251207729468599 [2022-01-19 02:52:19,216 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2022-01-19 02:52:19,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2022-01-19 02:52:19,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:52:19,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2022-01-19 02:52:19,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 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 02:52:19,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 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 02:52:19,217 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 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 02:52:19,217 INFO L186 Difference]: Start difference. First operand has 216 places, 240 transitions, 2097 flow. Second operand 3 states and 383 transitions. [2022-01-19 02:52:19,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 233 transitions, 1996 flow [2022-01-19 02:52:19,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 233 transitions, 1875 flow, removed 51 selfloop flow, removed 6 redundant places. [2022-01-19 02:52:19,978 INFO L242 Difference]: Finished difference. Result has 210 places, 228 transitions, 1828 flow [2022-01-19 02:52:19,979 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=1820, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1828, PETRI_PLACES=210, PETRI_TRANSITIONS=228} [2022-01-19 02:52:19,981 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 78 predicate places. [2022-01-19 02:52:19,981 INFO L470 AbstractCegarLoop]: Abstraction has has 210 places, 228 transitions, 1828 flow [2022-01-19 02:52:19,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 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 02:52:19,981 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:52:19,981 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] [2022-01-19 02:52:19,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 02:52:19,981 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 02:52:19,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:52:19,982 INFO L85 PathProgramCache]: Analyzing trace with hash -451167609, now seen corresponding path program 9 times [2022-01-19 02:52:19,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:52:19,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724038674] [2022-01-19 02:52:19,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:52:19,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:52:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:52:20,615 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 02:52:20,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:52:20,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724038674] [2022-01-19 02:52:20,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724038674] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:52:20,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:52:20,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-19 02:52:20,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240966137] [2022-01-19 02:52:20,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:52:20,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-19 02:52:20,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:52:20,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-19 02:52:20,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-01-19 02:52:20,617 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-01-19 02:52:20,618 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 228 transitions, 1828 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:52:20,618 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:52:20,618 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-01-19 02:52:20,618 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:52:30,044 INFO L129 PetriNetUnfolder]: 25946/71278 cut-off events. [2022-01-19 02:52:30,044 INFO L130 PetriNetUnfolder]: For 329115/329115 co-relation queries the response was YES. [2022-01-19 02:52:30,677 INFO L84 FinitePrefix]: Finished finitePrefix Result has 247096 conditions, 71278 events. 25946/71278 cut-off events. For 329115/329115 co-relation queries the response was YES. Maximal size of possible extension queue 4924. Compared 1002546 event pairs, 8578 based on Foata normal form. 1/70461 useless extension candidates. Maximal degree in co-relation 228804. Up to 14224 conditions per place. [2022-01-19 02:52:31,013 INFO L132 encePairwiseOnDemand]: 121/138 looper letters, 332 selfloop transitions, 93 changer transitions 12/506 dead transitions. [2022-01-19 02:52:31,014 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 506 transitions, 5319 flow [2022-01-19 02:52:31,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 02:52:31,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 02:52:31,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1562 transitions. [2022-01-19 02:52:31,017 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.707427536231884 [2022-01-19 02:52:31,017 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1562 transitions. [2022-01-19 02:52:31,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1562 transitions. [2022-01-19 02:52:31,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:52:31,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1562 transitions. [2022-01-19 02:52:31,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 97.625) internal successors, (1562), 16 states have internal predecessors, (1562), 0 states have call successors, (0), 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 02:52:31,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 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 02:52:31,022 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 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 02:52:31,022 INFO L186 Difference]: Start difference. First operand has 210 places, 228 transitions, 1828 flow. Second operand 16 states and 1562 transitions. [2022-01-19 02:52:31,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 506 transitions, 5319 flow [2022-01-19 02:52:35,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 506 transitions, 5315 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 02:52:35,207 INFO L242 Difference]: Finished difference. Result has 237 places, 284 transitions, 3029 flow [2022-01-19 02:52:35,207 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=1824, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3029, PETRI_PLACES=237, PETRI_TRANSITIONS=284} [2022-01-19 02:52:35,208 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 105 predicate places. [2022-01-19 02:52:35,208 INFO L470 AbstractCegarLoop]: Abstraction has has 237 places, 284 transitions, 3029 flow [2022-01-19 02:52:35,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:52:35,208 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:52:35,208 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] [2022-01-19 02:52:35,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 02:52:35,209 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 02:52:35,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:52:35,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1989242891, now seen corresponding path program 10 times [2022-01-19 02:52:35,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:52:35,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642084933] [2022-01-19 02:52:35,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:52:35,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:52:35,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:52:35,854 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 02:52:35,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:52:35,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642084933] [2022-01-19 02:52:35,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642084933] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:52:35,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:52:35,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-19 02:52:35,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862617621] [2022-01-19 02:52:35,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:52:35,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-19 02:52:35,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:52:35,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-19 02:52:35,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-01-19 02:52:35,856 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-01-19 02:52:35,857 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 284 transitions, 3029 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:52:35,857 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:52:35,857 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-01-19 02:52:35,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:52:48,994 INFO L129 PetriNetUnfolder]: 31716/88529 cut-off events. [2022-01-19 02:52:48,994 INFO L130 PetriNetUnfolder]: For 614657/614657 co-relation queries the response was YES. [2022-01-19 02:52:50,005 INFO L84 FinitePrefix]: Finished finitePrefix Result has 341481 conditions, 88529 events. 31716/88529 cut-off events. For 614657/614657 co-relation queries the response was YES. Maximal size of possible extension queue 6168. Compared 1290569 event pairs, 10925 based on Foata normal form. 1/87313 useless extension candidates. Maximal degree in co-relation 339139. Up to 16975 conditions per place. [2022-01-19 02:52:50,289 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 421 selfloop transitions, 118 changer transitions 8/616 dead transitions. [2022-01-19 02:52:50,289 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 616 transitions, 7953 flow [2022-01-19 02:52:50,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 02:52:50,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 02:52:50,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1584 transitions. [2022-01-19 02:52:50,292 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.717391304347826 [2022-01-19 02:52:50,292 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1584 transitions. [2022-01-19 02:52:50,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1584 transitions. [2022-01-19 02:52:50,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:52:50,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1584 transitions. [2022-01-19 02:52:50,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 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 02:52:50,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 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 02:52:50,297 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 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 02:52:50,297 INFO L186 Difference]: Start difference. First operand has 237 places, 284 transitions, 3029 flow. Second operand 16 states and 1584 transitions. [2022-01-19 02:52:50,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 616 transitions, 7953 flow [2022-01-19 02:52:59,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 616 transitions, 7743 flow, removed 101 selfloop flow, removed 5 redundant places. [2022-01-19 02:52:59,791 INFO L242 Difference]: Finished difference. Result has 257 places, 334 transitions, 4295 flow [2022-01-19 02:52:59,792 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=2954, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4295, PETRI_PLACES=257, PETRI_TRANSITIONS=334} [2022-01-19 02:52:59,792 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 125 predicate places. [2022-01-19 02:52:59,792 INFO L470 AbstractCegarLoop]: Abstraction has has 257 places, 334 transitions, 4295 flow [2022-01-19 02:52:59,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:52:59,793 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:52:59,793 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] [2022-01-19 02:52:59,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 02:52:59,793 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 02:52:59,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:52:59,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1490072689, now seen corresponding path program 11 times [2022-01-19 02:52:59,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:52:59,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559586982] [2022-01-19 02:52:59,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:52:59,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:52:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:53:00,408 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 02:53:00,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:53:00,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559586982] [2022-01-19 02:53:00,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559586982] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:53:00,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:53:00,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-19 02:53:00,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622539085] [2022-01-19 02:53:00,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:53:00,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-19 02:53:00,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:53:00,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-19 02:53:00,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-01-19 02:53:00,411 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-01-19 02:53:00,411 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 334 transitions, 4295 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:53:00,411 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:53:00,411 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-01-19 02:53:00,412 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:53:15,584 INFO L129 PetriNetUnfolder]: 33829/94253 cut-off events. [2022-01-19 02:53:15,584 INFO L130 PetriNetUnfolder]: For 828194/828226 co-relation queries the response was YES. [2022-01-19 02:53:16,997 INFO L84 FinitePrefix]: Finished finitePrefix Result has 391980 conditions, 94253 events. 33829/94253 cut-off events. For 828194/828226 co-relation queries the response was YES. Maximal size of possible extension queue 6808. Compared 1393250 event pairs, 12086 based on Foata normal form. 7/92847 useless extension candidates. Maximal degree in co-relation 389328. Up to 24023 conditions per place. [2022-01-19 02:53:17,314 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 463 selfloop transitions, 119 changer transitions 9/660 dead transitions. [2022-01-19 02:53:17,314 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 660 transitions, 9593 flow [2022-01-19 02:53:17,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 02:53:17,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 02:53:17,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1590 transitions. [2022-01-19 02:53:17,316 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.720108695652174 [2022-01-19 02:53:17,316 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1590 transitions. [2022-01-19 02:53:17,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1590 transitions. [2022-01-19 02:53:17,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:53:17,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1590 transitions. [2022-01-19 02:53:17,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.375) internal successors, (1590), 16 states have internal predecessors, (1590), 0 states have call successors, (0), 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 02:53:17,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 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 02:53:17,321 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 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 02:53:17,321 INFO L186 Difference]: Start difference. First operand has 257 places, 334 transitions, 4295 flow. Second operand 16 states and 1590 transitions. [2022-01-19 02:53:17,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 660 transitions, 9593 flow [2022-01-19 02:53:27,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 660 transitions, 9330 flow, removed 128 selfloop flow, removed 4 redundant places. [2022-01-19 02:53:27,298 INFO L242 Difference]: Finished difference. Result has 278 places, 363 transitions, 5182 flow [2022-01-19 02:53:27,298 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=4160, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5182, PETRI_PLACES=278, PETRI_TRANSITIONS=363} [2022-01-19 02:53:27,299 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 146 predicate places. [2022-01-19 02:53:27,299 INFO L470 AbstractCegarLoop]: Abstraction has has 278 places, 363 transitions, 5182 flow [2022-01-19 02:53:27,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:53:27,299 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:53:27,300 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] [2022-01-19 02:53:27,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 02:53:27,300 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 02:53:27,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:53:27,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1719168271, now seen corresponding path program 12 times [2022-01-19 02:53:27,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:53:27,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401113803] [2022-01-19 02:53:27,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:53:27,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:53:27,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:53:27,898 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 02:53:27,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:53:27,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401113803] [2022-01-19 02:53:27,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401113803] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:53:27,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:53:27,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-19 02:53:27,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115065623] [2022-01-19 02:53:27,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:53:27,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-19 02:53:27,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:53:27,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-19 02:53:27,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-01-19 02:53:27,900 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-01-19 02:53:27,901 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 363 transitions, 5182 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:53:27,902 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:53:27,902 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-01-19 02:53:27,902 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:53:45,252 INFO L129 PetriNetUnfolder]: 34968/100083 cut-off events. [2022-01-19 02:53:45,253 INFO L130 PetriNetUnfolder]: For 1088206/1088206 co-relation queries the response was YES. [2022-01-19 02:53:46,919 INFO L84 FinitePrefix]: Finished finitePrefix Result has 440156 conditions, 100083 events. 34968/100083 cut-off events. For 1088206/1088206 co-relation queries the response was YES. Maximal size of possible extension queue 7318. Compared 1510872 event pairs, 12000 based on Foata normal form. 1/98563 useless extension candidates. Maximal degree in co-relation 437099. Up to 20493 conditions per place. [2022-01-19 02:53:47,330 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 457 selfloop transitions, 158 changer transitions 9/693 dead transitions. [2022-01-19 02:53:47,331 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 693 transitions, 11100 flow [2022-01-19 02:53:47,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 02:53:47,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 02:53:47,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1576 transitions. [2022-01-19 02:53:47,357 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7137681159420289 [2022-01-19 02:53:47,357 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1576 transitions. [2022-01-19 02:53:47,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1576 transitions. [2022-01-19 02:53:47,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:53:47,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1576 transitions. [2022-01-19 02:53:47,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 98.5) internal successors, (1576), 16 states have internal predecessors, (1576), 0 states have call successors, (0), 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 02:53:47,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 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 02:53:47,364 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 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 02:53:47,364 INFO L186 Difference]: Start difference. First operand has 278 places, 363 transitions, 5182 flow. Second operand 16 states and 1576 transitions. [2022-01-19 02:53:47,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 693 transitions, 11100 flow [2022-01-19 02:53:59,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 693 transitions, 10842 flow, removed 112 selfloop flow, removed 5 redundant places. [2022-01-19 02:53:59,476 INFO L242 Difference]: Finished difference. Result has 296 places, 419 transitions, 6737 flow [2022-01-19 02:53:59,476 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=5016, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6737, PETRI_PLACES=296, PETRI_TRANSITIONS=419} [2022-01-19 02:53:59,477 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 164 predicate places. [2022-01-19 02:53:59,477 INFO L470 AbstractCegarLoop]: Abstraction has has 296 places, 419 transitions, 6737 flow [2022-01-19 02:53:59,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:53:59,477 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:53:59,477 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] [2022-01-19 02:53:59,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-19 02:53:59,477 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 02:53:59,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:53:59,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1388784379, now seen corresponding path program 13 times [2022-01-19 02:53:59,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:53:59,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431274221] [2022-01-19 02:53:59,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:53:59,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:53:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:54:00,088 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 02:54:00,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:54:00,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431274221] [2022-01-19 02:54:00,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431274221] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:54:00,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:54:00,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-19 02:54:00,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371983831] [2022-01-19 02:54:00,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:54:00,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-19 02:54:00,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:54:00,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-19 02:54:00,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-01-19 02:54:00,090 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-01-19 02:54:00,090 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 419 transitions, 6737 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:54:00,090 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:54:00,091 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-01-19 02:54:00,091 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:54:24,860 INFO L129 PetriNetUnfolder]: 39721/131403 cut-off events. [2022-01-19 02:54:24,860 INFO L130 PetriNetUnfolder]: For 1637257/1637257 co-relation queries the response was YES. [2022-01-19 02:54:27,096 INFO L84 FinitePrefix]: Finished finitePrefix Result has 576162 conditions, 131403 events. 39721/131403 cut-off events. For 1637257/1637257 co-relation queries the response was YES. Maximal size of possible extension queue 9978. Compared 2192206 event pairs, 14676 based on Foata normal form. 1/129664 useless extension candidates. Maximal degree in co-relation 570372. Up to 25749 conditions per place. [2022-01-19 02:54:27,528 INFO L132 encePairwiseOnDemand]: 121/138 looper letters, 853 selfloop transitions, 179 changer transitions 8/1109 dead transitions. [2022-01-19 02:54:27,528 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 1109 transitions, 21779 flow [2022-01-19 02:54:27,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 02:54:27,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 02:54:27,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1573 transitions. [2022-01-19 02:54:27,530 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7124094202898551 [2022-01-19 02:54:27,530 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1573 transitions. [2022-01-19 02:54:27,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1573 transitions. [2022-01-19 02:54:27,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:54:27,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1573 transitions. [2022-01-19 02:54:27,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 98.3125) internal successors, (1573), 16 states have internal predecessors, (1573), 0 states have call successors, (0), 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 02:54:27,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 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 02:54:27,534 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 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 02:54:27,534 INFO L186 Difference]: Start difference. First operand has 296 places, 419 transitions, 6737 flow. Second operand 16 states and 1573 transitions. [2022-01-19 02:54:27,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 1109 transitions, 21779 flow [2022-01-19 02:54:50,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 1109 transitions, 21316 flow, removed 181 selfloop flow, removed 5 redundant places. [2022-01-19 02:54:50,830 INFO L242 Difference]: Finished difference. Result has 317 places, 543 transitions, 9827 flow [2022-01-19 02:54:50,830 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=6553, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=9827, PETRI_PLACES=317, PETRI_TRANSITIONS=543} [2022-01-19 02:54:50,831 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 185 predicate places. [2022-01-19 02:54:50,831 INFO L470 AbstractCegarLoop]: Abstraction has has 317 places, 543 transitions, 9827 flow [2022-01-19 02:54:50,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:54:50,831 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:54:50,831 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] [2022-01-19 02:54:50,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-19 02:54:50,831 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 02:54:50,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:54:50,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1473821179, now seen corresponding path program 14 times [2022-01-19 02:54:50,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:54:50,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438868351] [2022-01-19 02:54:50,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:54:50,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:54:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:54:51,382 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 02:54:51,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:54:51,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438868351] [2022-01-19 02:54:51,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438868351] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:54:51,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:54:51,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-19 02:54:51,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202054800] [2022-01-19 02:54:51,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:54:51,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-19 02:54:51,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:54:51,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-19 02:54:51,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-01-19 02:54:51,384 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-01-19 02:54:51,384 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 543 transitions, 9827 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:54:51,384 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:54:51,384 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-01-19 02:54:51,384 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:55:20,982 INFO L129 PetriNetUnfolder]: 39727/132190 cut-off events. [2022-01-19 02:55:20,982 INFO L130 PetriNetUnfolder]: For 1899965/1899997 co-relation queries the response was YES. [2022-01-19 02:55:23,486 INFO L84 FinitePrefix]: Finished finitePrefix Result has 610846 conditions, 132190 events. 39727/132190 cut-off events. For 1899965/1899997 co-relation queries the response was YES. Maximal size of possible extension queue 9839. Compared 2208821 event pairs, 16531 based on Foata normal form. 7/129378 useless extension candidates. Maximal degree in co-relation 607025. Up to 30816 conditions per place. [2022-01-19 02:55:24,161 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 592 selfloop transitions, 225 changer transitions 9/895 dead transitions. [2022-01-19 02:55:24,161 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 895 transitions, 17242 flow [2022-01-19 02:55:24,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 02:55:24,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 02:55:24,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1583 transitions. [2022-01-19 02:55:24,163 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7169384057971014 [2022-01-19 02:55:24,163 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1583 transitions. [2022-01-19 02:55:24,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1583 transitions. [2022-01-19 02:55:24,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:55:24,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1583 transitions. [2022-01-19 02:55:24,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 98.9375) internal successors, (1583), 16 states have internal predecessors, (1583), 0 states have call successors, (0), 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 02:55:24,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 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 02:55:24,167 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 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 02:55:24,167 INFO L186 Difference]: Start difference. First operand has 317 places, 543 transitions, 9827 flow. Second operand 16 states and 1583 transitions. [2022-01-19 02:55:24,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 895 transitions, 17242 flow [2022-01-19 02:55:51,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 895 transitions, 16895 flow, removed 148 selfloop flow, removed 4 redundant places. [2022-01-19 02:55:51,759 INFO L242 Difference]: Finished difference. Result has 336 places, 588 transitions, 11550 flow [2022-01-19 02:55:51,760 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=9686, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=11550, PETRI_PLACES=336, PETRI_TRANSITIONS=588} [2022-01-19 02:55:51,760 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 204 predicate places. [2022-01-19 02:55:51,760 INFO L470 AbstractCegarLoop]: Abstraction has has 336 places, 588 transitions, 11550 flow [2022-01-19 02:55:51,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:55:51,760 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:55:51,760 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] [2022-01-19 02:55:51,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-19 02:55:51,761 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 02:55:51,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:55:51,761 INFO L85 PathProgramCache]: Analyzing trace with hash -259754455, now seen corresponding path program 15 times [2022-01-19 02:55:51,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:55:51,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748150527] [2022-01-19 02:55:51,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:55:51,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:55:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:55:52,400 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 02:55:52,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:55:52,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748150527] [2022-01-19 02:55:52,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748150527] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:55:52,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:55:52,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-19 02:55:52,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552511081] [2022-01-19 02:55:52,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:55:52,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-19 02:55:52,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:55:52,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-19 02:55:52,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-01-19 02:55:52,402 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-01-19 02:55:52,402 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 588 transitions, 11550 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:55:52,402 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:55:52,402 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-01-19 02:55:52,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand