/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/chl-simpl-str-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 00:50:08,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 00:50:08,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 00:50:08,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 00:50:08,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 00:50:08,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 00:50:08,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 00:50:08,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 00:50:08,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 00:50:08,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 00:50:08,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 00:50:08,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 00:50:08,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 00:50:08,975 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 00:50:08,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 00:50:08,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 00:50:08,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 00:50:08,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 00:50:08,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 00:50:08,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 00:50:08,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 00:50:08,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 00:50:08,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 00:50:08,986 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 00:50:08,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-19 00:50:08,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 00:50:08,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 00:50:08,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 00:50:08,998 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 00:50:09,022 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 00:50:09,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 00:50:09,023 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 00:50:09,023 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 00:50:09,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 00:50:09,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 00:50:09,024 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 00:50:09,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 00:50:09,024 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 00:50:09,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 00:50:09,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 00:50:09,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 00:50:09,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 00:50:09,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 00:50:09,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 00:50:09,025 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 00:50:09,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 00:50:09,025 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 00:50:09,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 00:50:09,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 00:50:09,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 00:50:09,025 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 00:50:09,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 00:50:09,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 00:50:09,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 00:50:09,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 00:50:09,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 00:50:09,026 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 00:50:09,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 00:50:09,026 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 00:50:09,027 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 00:50:09,027 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 00:50:09,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 00:50:09,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 00:50:09,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 00:50:09,220 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 00:50:09,221 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 00:50:09,221 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-simpl-str-symm.wvr.c [2022-01-19 00:50:09,259 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83847a69e/9cbcb07993934223a7da66550ff42f37/FLAG8c5df0963 [2022-01-19 00:50:09,618 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 00:50:09,619 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-symm.wvr.c [2022-01-19 00:50:09,626 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83847a69e/9cbcb07993934223a7da66550ff42f37/FLAG8c5df0963 [2022-01-19 00:50:09,634 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83847a69e/9cbcb07993934223a7da66550ff42f37 [2022-01-19 00:50:09,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 00:50:09,637 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 00:50:09,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 00:50:09,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 00:50:09,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 00:50:09,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 12:50:09" (1/1) ... [2022-01-19 00:50:09,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11968405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:50:09, skipping insertion in model container [2022-01-19 00:50:09,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 12:50:09" (1/1) ... [2022-01-19 00:50:09,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 00:50:09,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 00:50:09,772 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/chl-simpl-str-symm.wvr.c[2303,2316] [2022-01-19 00:50:09,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 00:50:09,784 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 00:50:09,797 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/chl-simpl-str-symm.wvr.c[2303,2316] [2022-01-19 00:50:09,798 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 00:50:09,806 INFO L208 MainTranslator]: Completed translation [2022-01-19 00:50:09,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:50:09 WrapperNode [2022-01-19 00:50:09,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 00:50:09,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 00:50:09,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 00:50:09,807 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 00:50:09,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:50:09" (1/1) ... [2022-01-19 00:50:09,817 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:50:09" (1/1) ... [2022-01-19 00:50:09,834 INFO L137 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 130 [2022-01-19 00:50:09,834 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 00:50:09,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 00:50:09,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 00:50:09,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 00:50:09,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:50:09" (1/1) ... [2022-01-19 00:50:09,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:50:09" (1/1) ... [2022-01-19 00:50:09,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:50:09" (1/1) ... [2022-01-19 00:50:09,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:50:09" (1/1) ... [2022-01-19 00:50:09,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:50:09" (1/1) ... [2022-01-19 00:50:09,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:50:09" (1/1) ... [2022-01-19 00:50:09,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:50:09" (1/1) ... [2022-01-19 00:50:09,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 00:50:09,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 00:50:09,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 00:50:09,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 00:50:09,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:50:09" (1/1) ... [2022-01-19 00:50:09,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 00:50:09,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 00:50:09,897 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 00:50:09,898 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 00:50:09,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 00:50:09,924 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 00:50:09,924 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 00:50:09,924 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 00:50:09,924 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 00:50:09,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 00:50:09,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 00:50:09,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 00:50:09,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 00:50:09,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 00:50:09,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 00:50:09,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 00:50:09,926 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 00:50:10,030 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 00:50:10,031 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 00:50:10,248 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 00:50:10,255 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 00:50:10,255 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 00:50:10,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 12:50:10 BoogieIcfgContainer [2022-01-19 00:50:10,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 00:50:10,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 00:50:10,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 00:50:10,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 00:50:10,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 12:50:09" (1/3) ... [2022-01-19 00:50:10,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227d418e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 12:50:10, skipping insertion in model container [2022-01-19 00:50:10,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:50:09" (2/3) ... [2022-01-19 00:50:10,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227d418e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 12:50:10, skipping insertion in model container [2022-01-19 00:50:10,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 12:50:10" (3/3) ... [2022-01-19 00:50:10,265 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-symm.wvr.c [2022-01-19 00:50:10,269 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 00:50:10,269 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 00:50:10,270 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 00:50:10,327 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,328 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,328 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,329 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,329 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,329 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,329 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,329 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,330 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,330 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,330 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,330 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,331 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,331 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,331 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,331 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,332 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,332 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,333 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,333 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,333 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,333 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,333 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,333 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,334 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,334 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,334 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,334 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,334 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,334 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,334 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,335 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,335 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,335 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,335 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,335 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,335 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,335 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,336 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,336 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,336 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,336 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,336 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,336 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,336 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,336 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,336 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,337 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,337 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,337 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,337 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,337 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,338 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,338 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,338 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,338 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,338 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,338 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,338 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,339 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,339 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,339 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,339 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,339 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,339 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,340 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,341 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,341 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,341 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,341 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,341 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,342 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,342 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,342 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,342 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,343 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,343 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,343 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,343 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,343 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,343 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,344 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,344 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,344 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,345 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,345 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,345 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,346 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,346 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,347 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,348 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,349 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,349 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,349 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,351 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,352 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,356 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,356 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,356 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,356 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,357 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,357 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,357 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,357 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,357 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,357 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,357 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,357 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,357 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,357 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,358 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,358 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,358 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,358 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,358 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,358 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,358 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,358 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,358 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,358 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,358 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,359 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,359 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,359 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,360 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,360 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,360 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,361 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,361 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,361 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,361 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,361 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,361 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,361 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,361 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,362 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,362 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,362 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,362 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,363 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,363 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,363 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,363 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,364 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,364 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,364 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,366 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,366 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,366 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,366 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,366 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,366 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,366 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,368 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,368 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,369 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,369 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,369 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,369 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,369 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,369 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,369 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,369 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,370 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,370 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,370 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,370 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,370 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,370 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,371 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,371 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,371 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,371 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,371 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,371 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,372 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,373 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,374 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,374 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,374 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,374 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,378 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,379 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,379 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,379 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,379 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,379 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,379 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,379 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,380 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,380 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,380 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,380 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,380 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,382 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,382 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,382 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,383 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,383 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,383 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,383 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,383 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,383 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,383 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,383 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,383 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,383 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:50:10,387 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-19 00:50:10,425 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 00:50:10,429 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 00:50:10,429 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-19 00:50:10,452 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 170 places, 176 transitions, 368 flow [2022-01-19 00:50:10,524 INFO L129 PetriNetUnfolder]: 13/174 cut-off events. [2022-01-19 00:50:10,524 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 00:50:10,529 INFO L84 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 174 events. 13/174 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 289 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2022-01-19 00:50:10,531 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 176 transitions, 368 flow [2022-01-19 00:50:10,535 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 165 transitions, 342 flow [2022-01-19 00:50:10,555 INFO L129 PetriNetUnfolder]: 13/164 cut-off events. [2022-01-19 00:50:10,555 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 00:50:10,555 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:10,556 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] [2022-01-19 00:50:10,556 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:10,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:10,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1782218821, now seen corresponding path program 1 times [2022-01-19 00:50:10,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:10,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228044733] [2022-01-19 00:50:10,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:10,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:10,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:11,000 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 00:50:11,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:11,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228044733] [2022-01-19 00:50:11,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228044733] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:11,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:11,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:11,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503947124] [2022-01-19 00:50:11,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:11,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:11,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:11,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:11,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:11,042 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:11,047 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 165 transitions, 342 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:11,047 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:11,047 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:11,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:11,428 INFO L129 PetriNetUnfolder]: 107/482 cut-off events. [2022-01-19 00:50:11,428 INFO L130 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2022-01-19 00:50:11,431 INFO L84 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 482 events. 107/482 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2371 event pairs, 35 based on Foata normal form. 26/479 useless extension candidates. Maximal degree in co-relation 568. Up to 123 conditions per place. [2022-01-19 00:50:11,436 INFO L132 encePairwiseOnDemand]: 155/176 looper letters, 81 selfloop transitions, 5 changer transitions 44/253 dead transitions. [2022-01-19 00:50:11,436 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 253 transitions, 808 flow [2022-01-19 00:50:11,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-19 00:50:11,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-01-19 00:50:11,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3478 transitions. [2022-01-19 00:50:11,457 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7904545454545454 [2022-01-19 00:50:11,457 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3478 transitions. [2022-01-19 00:50:11,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3478 transitions. [2022-01-19 00:50:11,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:11,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3478 transitions. [2022-01-19 00:50:11,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 139.12) internal successors, (3478), 25 states have internal predecessors, (3478), 0 states have call successors, (0), 0 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 00:50:11,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 176.0) internal successors, (4576), 26 states have internal predecessors, (4576), 0 states have call successors, (0), 0 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 00:50:11,485 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 176.0) internal successors, (4576), 26 states have internal predecessors, (4576), 0 states have call successors, (0), 0 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 00:50:11,486 INFO L186 Difference]: Start difference. First operand has 159 places, 165 transitions, 342 flow. Second operand 25 states and 3478 transitions. [2022-01-19 00:50:11,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 253 transitions, 808 flow [2022-01-19 00:50:11,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 253 transitions, 780 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 00:50:11,496 INFO L242 Difference]: Finished difference. Result has 201 places, 159 transitions, 405 flow [2022-01-19 00:50:11,497 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=405, PETRI_PLACES=201, PETRI_TRANSITIONS=159} [2022-01-19 00:50:11,500 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 42 predicate places. [2022-01-19 00:50:11,500 INFO L470 AbstractCegarLoop]: Abstraction has has 201 places, 159 transitions, 405 flow [2022-01-19 00:50:11,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:11,501 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:11,501 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] [2022-01-19 00:50:11,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 00:50:11,502 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:11,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:11,502 INFO L85 PathProgramCache]: Analyzing trace with hash 346921447, now seen corresponding path program 1 times [2022-01-19 00:50:11,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:11,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382290032] [2022-01-19 00:50:11,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:11,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:11,556 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 00:50:11,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:11,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382290032] [2022-01-19 00:50:11,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382290032] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:11,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:11,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 00:50:11,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675370459] [2022-01-19 00:50:11,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:11,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 00:50:11,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:11,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 00:50:11,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 00:50:11,559 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2022-01-19 00:50:11,560 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 159 transitions, 405 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 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 00:50:11,560 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:11,560 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2022-01-19 00:50:11,560 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:11,634 INFO L129 PetriNetUnfolder]: 59/602 cut-off events. [2022-01-19 00:50:11,634 INFO L130 PetriNetUnfolder]: For 894/932 co-relation queries the response was YES. [2022-01-19 00:50:11,637 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1174 conditions, 602 events. 59/602 cut-off events. For 894/932 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3216 event pairs, 30 based on Foata normal form. 4/547 useless extension candidates. Maximal degree in co-relation 1109. Up to 42 conditions per place. [2022-01-19 00:50:11,639 INFO L132 encePairwiseOnDemand]: 168/176 looper letters, 13 selfloop transitions, 5 changer transitions 0/165 dead transitions. [2022-01-19 00:50:11,639 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 165 transitions, 456 flow [2022-01-19 00:50:11,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 00:50:11,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 00:50:11,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2022-01-19 00:50:11,641 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2022-01-19 00:50:11,641 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2022-01-19 00:50:11,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2022-01-19 00:50:11,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:11,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2022-01-19 00:50:11,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 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 00:50:11,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 00:50:11,643 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 00:50:11,644 INFO L186 Difference]: Start difference. First operand has 201 places, 159 transitions, 405 flow. Second operand 3 states and 489 transitions. [2022-01-19 00:50:11,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 165 transitions, 456 flow [2022-01-19 00:50:11,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 165 transitions, 437 flow, removed 9 selfloop flow, removed 10 redundant places. [2022-01-19 00:50:11,654 INFO L242 Difference]: Finished difference. Result has 174 places, 162 transitions, 424 flow [2022-01-19 00:50:11,654 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=424, PETRI_PLACES=174, PETRI_TRANSITIONS=162} [2022-01-19 00:50:11,655 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 15 predicate places. [2022-01-19 00:50:11,655 INFO L470 AbstractCegarLoop]: Abstraction has has 174 places, 162 transitions, 424 flow [2022-01-19 00:50:11,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 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 00:50:11,655 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:11,656 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] [2022-01-19 00:50:11,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 00:50:11,656 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:11,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:11,656 INFO L85 PathProgramCache]: Analyzing trace with hash -250466245, now seen corresponding path program 2 times [2022-01-19 00:50:11,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:11,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830608769] [2022-01-19 00:50:11,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:11,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:11,707 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 00:50:11,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:11,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830608769] [2022-01-19 00:50:11,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830608769] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:11,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:11,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 00:50:11,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685133352] [2022-01-19 00:50:11,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:11,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 00:50:11,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:11,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 00:50:11,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 00:50:11,710 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2022-01-19 00:50:11,710 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 162 transitions, 424 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 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 00:50:11,710 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:11,710 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2022-01-19 00:50:11,710 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:11,760 INFO L129 PetriNetUnfolder]: 38/491 cut-off events. [2022-01-19 00:50:11,760 INFO L130 PetriNetUnfolder]: For 415/432 co-relation queries the response was YES. [2022-01-19 00:50:11,762 INFO L84 FinitePrefix]: Finished finitePrefix Result has 866 conditions, 491 events. 38/491 cut-off events. For 415/432 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2367 event pairs, 25 based on Foata normal form. 5/461 useless extension candidates. Maximal degree in co-relation 582. Up to 26 conditions per place. [2022-01-19 00:50:11,763 INFO L132 encePairwiseOnDemand]: 170/176 looper letters, 18 selfloop transitions, 3 changer transitions 2/168 dead transitions. [2022-01-19 00:50:11,763 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 168 transitions, 487 flow [2022-01-19 00:50:11,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 00:50:11,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 00:50:11,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2022-01-19 00:50:11,764 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2022-01-19 00:50:11,764 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2022-01-19 00:50:11,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2022-01-19 00:50:11,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:11,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2022-01-19 00:50:11,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 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 00:50:11,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 00:50:11,767 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 00:50:11,767 INFO L186 Difference]: Start difference. First operand has 174 places, 162 transitions, 424 flow. Second operand 3 states and 489 transitions. [2022-01-19 00:50:11,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 168 transitions, 487 flow [2022-01-19 00:50:11,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 168 transitions, 477 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 00:50:11,773 INFO L242 Difference]: Finished difference. Result has 176 places, 163 transitions, 446 flow [2022-01-19 00:50:11,774 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=446, PETRI_PLACES=176, PETRI_TRANSITIONS=163} [2022-01-19 00:50:11,775 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 17 predicate places. [2022-01-19 00:50:11,775 INFO L470 AbstractCegarLoop]: Abstraction has has 176 places, 163 transitions, 446 flow [2022-01-19 00:50:11,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 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 00:50:11,776 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:11,776 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] [2022-01-19 00:50:11,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 00:50:11,776 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:11,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:11,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1510269733, now seen corresponding path program 1 times [2022-01-19 00:50:11,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:11,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072589695] [2022-01-19 00:50:11,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:11,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:11,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:11,898 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 00:50:11,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:11,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072589695] [2022-01-19 00:50:11,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072589695] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:11,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:11,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:11,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668879525] [2022-01-19 00:50:11,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:11,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:11,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:11,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:11,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:11,905 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:11,906 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 163 transitions, 446 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:11,906 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:11,906 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:11,906 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:12,163 INFO L129 PetriNetUnfolder]: 189/899 cut-off events. [2022-01-19 00:50:12,163 INFO L130 PetriNetUnfolder]: For 1062/1086 co-relation queries the response was YES. [2022-01-19 00:50:12,166 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2155 conditions, 899 events. 189/899 cut-off events. For 1062/1086 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5534 event pairs, 53 based on Foata normal form. 5/857 useless extension candidates. Maximal degree in co-relation 1516. Up to 180 conditions per place. [2022-01-19 00:50:12,170 INFO L132 encePairwiseOnDemand]: 161/176 looper letters, 72 selfloop transitions, 22 changer transitions 34/256 dead transitions. [2022-01-19 00:50:12,170 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 256 transitions, 1069 flow [2022-01-19 00:50:12,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 00:50:12,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 00:50:12,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2251 transitions. [2022-01-19 00:50:12,174 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7993607954545454 [2022-01-19 00:50:12,174 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2251 transitions. [2022-01-19 00:50:12,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2251 transitions. [2022-01-19 00:50:12,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:12,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2251 transitions. [2022-01-19 00:50:12,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 140.6875) internal successors, (2251), 16 states have internal predecessors, (2251), 0 states have call successors, (0), 0 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 00:50:12,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 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 00:50:12,183 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 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 00:50:12,183 INFO L186 Difference]: Start difference. First operand has 176 places, 163 transitions, 446 flow. Second operand 16 states and 2251 transitions. [2022-01-19 00:50:12,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 256 transitions, 1069 flow [2022-01-19 00:50:12,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 256 transitions, 1060 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-01-19 00:50:12,190 INFO L242 Difference]: Finished difference. Result has 200 places, 184 transitions, 670 flow [2022-01-19 00:50:12,190 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=670, PETRI_PLACES=200, PETRI_TRANSITIONS=184} [2022-01-19 00:50:12,191 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 41 predicate places. [2022-01-19 00:50:12,192 INFO L470 AbstractCegarLoop]: Abstraction has has 200 places, 184 transitions, 670 flow [2022-01-19 00:50:12,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:12,192 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:12,192 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] [2022-01-19 00:50:12,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 00:50:12,193 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:12,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:12,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1403497175, now seen corresponding path program 1 times [2022-01-19 00:50:12,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:12,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373701472] [2022-01-19 00:50:12,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:12,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:12,230 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 00:50:12,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:12,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373701472] [2022-01-19 00:50:12,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373701472] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:12,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:12,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 00:50:12,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318174608] [2022-01-19 00:50:12,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:12,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 00:50:12,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:12,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 00:50:12,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 00:50:12,233 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2022-01-19 00:50:12,234 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 184 transitions, 670 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 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 00:50:12,234 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:12,234 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2022-01-19 00:50:12,234 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:12,323 INFO L129 PetriNetUnfolder]: 91/893 cut-off events. [2022-01-19 00:50:12,323 INFO L130 PetriNetUnfolder]: For 1700/1718 co-relation queries the response was YES. [2022-01-19 00:50:12,327 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2134 conditions, 893 events. 91/893 cut-off events. For 1700/1718 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5773 event pairs, 46 based on Foata normal form. 4/855 useless extension candidates. Maximal degree in co-relation 2080. Up to 77 conditions per place. [2022-01-19 00:50:12,329 INFO L132 encePairwiseOnDemand]: 168/176 looper letters, 12 selfloop transitions, 5 changer transitions 2/190 dead transitions. [2022-01-19 00:50:12,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 190 transitions, 721 flow [2022-01-19 00:50:12,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 00:50:12,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 00:50:12,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2022-01-19 00:50:12,330 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2022-01-19 00:50:12,330 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2022-01-19 00:50:12,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2022-01-19 00:50:12,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:12,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2022-01-19 00:50:12,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 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 00:50:12,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 00:50:12,334 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 00:50:12,334 INFO L186 Difference]: Start difference. First operand has 200 places, 184 transitions, 670 flow. Second operand 3 states and 489 transitions. [2022-01-19 00:50:12,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 190 transitions, 721 flow [2022-01-19 00:50:12,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 190 transitions, 671 flow, removed 25 selfloop flow, removed 5 redundant places. [2022-01-19 00:50:12,345 INFO L242 Difference]: Finished difference. Result has 193 places, 185 transitions, 648 flow [2022-01-19 00:50:12,345 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=648, PETRI_PLACES=193, PETRI_TRANSITIONS=185} [2022-01-19 00:50:12,347 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 34 predicate places. [2022-01-19 00:50:12,347 INFO L470 AbstractCegarLoop]: Abstraction has has 193 places, 185 transitions, 648 flow [2022-01-19 00:50:12,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 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 00:50:12,347 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:12,348 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] [2022-01-19 00:50:12,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 00:50:12,348 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:12,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:12,349 INFO L85 PathProgramCache]: Analyzing trace with hash -749552169, now seen corresponding path program 2 times [2022-01-19 00:50:12,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:12,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837946911] [2022-01-19 00:50:12,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:12,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:12,467 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 00:50:12,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:12,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837946911] [2022-01-19 00:50:12,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837946911] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:12,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:12,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:12,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412750600] [2022-01-19 00:50:12,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:12,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:12,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:12,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:12,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:12,471 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:12,472 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 185 transitions, 648 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:12,472 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:12,472 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:12,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:12,885 INFO L129 PetriNetUnfolder]: 220/1325 cut-off events. [2022-01-19 00:50:12,885 INFO L130 PetriNetUnfolder]: For 2111/2120 co-relation queries the response was YES. [2022-01-19 00:50:12,890 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3500 conditions, 1325 events. 220/1325 cut-off events. For 2111/2120 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 9458 event pairs, 109 based on Foata normal form. 2/1276 useless extension candidates. Maximal degree in co-relation 2865. Up to 437 conditions per place. [2022-01-19 00:50:12,893 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 116 selfloop transitions, 6 changer transitions 41/293 dead transitions. [2022-01-19 00:50:12,894 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 293 transitions, 1586 flow [2022-01-19 00:50:12,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 00:50:12,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 00:50:12,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3313 transitions. [2022-01-19 00:50:12,898 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7843276515151515 [2022-01-19 00:50:12,898 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3313 transitions. [2022-01-19 00:50:12,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3313 transitions. [2022-01-19 00:50:12,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:12,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3313 transitions. [2022-01-19 00:50:12,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 138.04166666666666) internal successors, (3313), 24 states have internal predecessors, (3313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:50:12,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 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 00:50:12,910 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 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 00:50:12,910 INFO L186 Difference]: Start difference. First operand has 193 places, 185 transitions, 648 flow. Second operand 24 states and 3313 transitions. [2022-01-19 00:50:12,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 293 transitions, 1586 flow [2022-01-19 00:50:12,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 293 transitions, 1576 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 00:50:12,922 INFO L242 Difference]: Finished difference. Result has 235 places, 189 transitions, 754 flow [2022-01-19 00:50:12,922 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=754, PETRI_PLACES=235, PETRI_TRANSITIONS=189} [2022-01-19 00:50:12,922 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 76 predicate places. [2022-01-19 00:50:12,922 INFO L470 AbstractCegarLoop]: Abstraction has has 235 places, 189 transitions, 754 flow [2022-01-19 00:50:12,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:12,923 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:12,923 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] [2022-01-19 00:50:12,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 00:50:12,923 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:12,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:12,924 INFO L85 PathProgramCache]: Analyzing trace with hash -26456751, now seen corresponding path program 1 times [2022-01-19 00:50:12,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:12,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935876623] [2022-01-19 00:50:12,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:12,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:12,940 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 00:50:12,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:12,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935876623] [2022-01-19 00:50:12,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935876623] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:12,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:12,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 00:50:12,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548952631] [2022-01-19 00:50:12,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:12,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 00:50:12,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:12,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 00:50:12,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 00:50:12,942 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2022-01-19 00:50:12,942 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 189 transitions, 754 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 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 00:50:12,942 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:12,942 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2022-01-19 00:50:12,942 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:13,000 INFO L129 PetriNetUnfolder]: 39/587 cut-off events. [2022-01-19 00:50:13,000 INFO L130 PetriNetUnfolder]: For 1478/1535 co-relation queries the response was YES. [2022-01-19 00:50:13,003 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1424 conditions, 587 events. 39/587 cut-off events. For 1478/1535 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3245 event pairs, 24 based on Foata normal form. 10/571 useless extension candidates. Maximal degree in co-relation 1339. Up to 44 conditions per place. [2022-01-19 00:50:13,004 INFO L132 encePairwiseOnDemand]: 170/176 looper letters, 16 selfloop transitions, 3 changer transitions 12/185 dead transitions. [2022-01-19 00:50:13,004 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 185 transitions, 746 flow [2022-01-19 00:50:13,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 00:50:13,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 00:50:13,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2022-01-19 00:50:13,005 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2022-01-19 00:50:13,005 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2022-01-19 00:50:13,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2022-01-19 00:50:13,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:13,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2022-01-19 00:50:13,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 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 00:50:13,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 00:50:13,007 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 00:50:13,007 INFO L186 Difference]: Start difference. First operand has 235 places, 189 transitions, 754 flow. Second operand 3 states and 489 transitions. [2022-01-19 00:50:13,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 185 transitions, 746 flow [2022-01-19 00:50:13,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 185 transitions, 679 flow, removed 30 selfloop flow, removed 13 redundant places. [2022-01-19 00:50:13,015 INFO L242 Difference]: Finished difference. Result has 207 places, 170 transitions, 586 flow [2022-01-19 00:50:13,015 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=586, PETRI_PLACES=207, PETRI_TRANSITIONS=170} [2022-01-19 00:50:13,016 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 48 predicate places. [2022-01-19 00:50:13,016 INFO L470 AbstractCegarLoop]: Abstraction has has 207 places, 170 transitions, 586 flow [2022-01-19 00:50:13,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 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 00:50:13,016 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:13,016 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] [2022-01-19 00:50:13,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 00:50:13,017 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:13,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:13,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1239491335, now seen corresponding path program 1 times [2022-01-19 00:50:13,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:13,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088465625] [2022-01-19 00:50:13,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:13,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:13,108 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 00:50:13,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:13,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088465625] [2022-01-19 00:50:13,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088465625] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:13,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:13,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:13,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924359279] [2022-01-19 00:50:13,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:13,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:13,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:13,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:13,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:13,111 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:13,112 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 170 transitions, 586 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:13,112 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:13,112 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:13,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:13,392 INFO L129 PetriNetUnfolder]: 119/762 cut-off events. [2022-01-19 00:50:13,392 INFO L130 PetriNetUnfolder]: For 1968/1985 co-relation queries the response was YES. [2022-01-19 00:50:13,395 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2122 conditions, 762 events. 119/762 cut-off events. For 1968/1985 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4413 event pairs, 55 based on Foata normal form. 1/737 useless extension candidates. Maximal degree in co-relation 1771. Up to 200 conditions per place. [2022-01-19 00:50:13,397 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 77 selfloop transitions, 6 changer transitions 37/250 dead transitions. [2022-01-19 00:50:13,397 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 250 transitions, 1290 flow [2022-01-19 00:50:13,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 00:50:13,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 00:50:13,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3303 transitions. [2022-01-19 00:50:13,402 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7819602272727273 [2022-01-19 00:50:13,402 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3303 transitions. [2022-01-19 00:50:13,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3303 transitions. [2022-01-19 00:50:13,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:13,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3303 transitions. [2022-01-19 00:50:13,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 137.625) internal successors, (3303), 24 states have internal predecessors, (3303), 0 states have call successors, (0), 0 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 00:50:13,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 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 00:50:13,413 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 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 00:50:13,413 INFO L186 Difference]: Start difference. First operand has 207 places, 170 transitions, 586 flow. Second operand 24 states and 3303 transitions. [2022-01-19 00:50:13,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 250 transitions, 1290 flow [2022-01-19 00:50:13,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 250 transitions, 1133 flow, removed 76 selfloop flow, removed 14 redundant places. [2022-01-19 00:50:13,421 INFO L242 Difference]: Finished difference. Result has 232 places, 175 transitions, 665 flow [2022-01-19 00:50:13,421 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=665, PETRI_PLACES=232, PETRI_TRANSITIONS=175} [2022-01-19 00:50:13,421 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 73 predicate places. [2022-01-19 00:50:13,422 INFO L470 AbstractCegarLoop]: Abstraction has has 232 places, 175 transitions, 665 flow [2022-01-19 00:50:13,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:13,422 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:13,422 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] [2022-01-19 00:50:13,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 00:50:13,422 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:13,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:13,423 INFO L85 PathProgramCache]: Analyzing trace with hash 633918351, now seen corresponding path program 3 times [2022-01-19 00:50:13,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:13,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691996168] [2022-01-19 00:50:13,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:13,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:13,530 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 00:50:13,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:13,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691996168] [2022-01-19 00:50:13,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691996168] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:13,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:13,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:13,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131556819] [2022-01-19 00:50:13,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:13,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:13,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:13,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:13,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:13,533 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:13,538 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 175 transitions, 665 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:13,538 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:13,538 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:13,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:13,763 INFO L129 PetriNetUnfolder]: 127/787 cut-off events. [2022-01-19 00:50:13,764 INFO L130 PetriNetUnfolder]: For 2110/2133 co-relation queries the response was YES. [2022-01-19 00:50:13,767 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2393 conditions, 787 events. 127/787 cut-off events. For 2110/2133 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4612 event pairs, 68 based on Foata normal form. 9/760 useless extension candidates. Maximal degree in co-relation 2260. Up to 239 conditions per place. [2022-01-19 00:50:13,769 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 61 selfloop transitions, 16 changer transitions 25/231 dead transitions. [2022-01-19 00:50:13,769 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 231 transitions, 1206 flow [2022-01-19 00:50:13,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 00:50:13,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 00:50:13,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2347 transitions. [2022-01-19 00:50:13,774 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7844251336898396 [2022-01-19 00:50:13,774 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2347 transitions. [2022-01-19 00:50:13,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2347 transitions. [2022-01-19 00:50:13,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:13,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2347 transitions. [2022-01-19 00:50:13,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 138.05882352941177) internal successors, (2347), 17 states have internal predecessors, (2347), 0 states have call successors, (0), 0 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 00:50:13,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:50:13,785 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:50:13,785 INFO L186 Difference]: Start difference. First operand has 232 places, 175 transitions, 665 flow. Second operand 17 states and 2347 transitions. [2022-01-19 00:50:13,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 231 transitions, 1206 flow [2022-01-19 00:50:13,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 231 transitions, 1163 flow, removed 21 selfloop flow, removed 12 redundant places. [2022-01-19 00:50:13,794 INFO L242 Difference]: Finished difference. Result has 231 places, 190 transitions, 817 flow [2022-01-19 00:50:13,794 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=817, PETRI_PLACES=231, PETRI_TRANSITIONS=190} [2022-01-19 00:50:13,795 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 72 predicate places. [2022-01-19 00:50:13,795 INFO L470 AbstractCegarLoop]: Abstraction has has 231 places, 190 transitions, 817 flow [2022-01-19 00:50:13,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:13,796 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:13,796 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] [2022-01-19 00:50:13,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 00:50:13,796 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:13,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:13,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1319299375, now seen corresponding path program 2 times [2022-01-19 00:50:13,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:13,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78881206] [2022-01-19 00:50:13,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:13,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:13,897 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 00:50:13,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:13,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78881206] [2022-01-19 00:50:13,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78881206] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:13,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:13,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:13,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207057250] [2022-01-19 00:50:13,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:13,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:13,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:13,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:13,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:13,901 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:13,902 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 190 transitions, 817 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:13,902 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:13,902 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:13,902 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:14,174 INFO L129 PetriNetUnfolder]: 173/899 cut-off events. [2022-01-19 00:50:14,175 INFO L130 PetriNetUnfolder]: For 2352/2367 co-relation queries the response was YES. [2022-01-19 00:50:14,178 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2938 conditions, 899 events. 173/899 cut-off events. For 2352/2367 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 5302 event pairs, 79 based on Foata normal form. 1/864 useless extension candidates. Maximal degree in co-relation 2845. Up to 281 conditions per place. [2022-01-19 00:50:14,181 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 76 selfloop transitions, 16 changer transitions 23/250 dead transitions. [2022-01-19 00:50:14,181 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 250 transitions, 1533 flow [2022-01-19 00:50:14,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 00:50:14,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 00:50:14,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2346 transitions. [2022-01-19 00:50:14,183 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7840909090909091 [2022-01-19 00:50:14,183 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2346 transitions. [2022-01-19 00:50:14,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2346 transitions. [2022-01-19 00:50:14,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:14,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2346 transitions. [2022-01-19 00:50:14,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 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 00:50:14,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:50:14,189 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:50:14,189 INFO L186 Difference]: Start difference. First operand has 231 places, 190 transitions, 817 flow. Second operand 17 states and 2346 transitions. [2022-01-19 00:50:14,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 250 transitions, 1533 flow [2022-01-19 00:50:14,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 250 transitions, 1506 flow, removed 11 selfloop flow, removed 9 redundant places. [2022-01-19 00:50:14,199 INFO L242 Difference]: Finished difference. Result has 241 places, 208 transitions, 1049 flow [2022-01-19 00:50:14,200 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1049, PETRI_PLACES=241, PETRI_TRANSITIONS=208} [2022-01-19 00:50:14,200 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 82 predicate places. [2022-01-19 00:50:14,200 INFO L470 AbstractCegarLoop]: Abstraction has has 241 places, 208 transitions, 1049 flow [2022-01-19 00:50:14,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:14,200 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:14,200 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] [2022-01-19 00:50:14,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 00:50:14,201 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:14,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:14,201 INFO L85 PathProgramCache]: Analyzing trace with hash -321024153, now seen corresponding path program 3 times [2022-01-19 00:50:14,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:14,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882602833] [2022-01-19 00:50:14,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:14,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:14,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:14,284 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 00:50:14,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:14,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882602833] [2022-01-19 00:50:14,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882602833] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:14,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:14,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:14,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264064777] [2022-01-19 00:50:14,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:14,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:14,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:14,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:14,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:14,286 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:14,287 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 208 transitions, 1049 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:14,287 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:14,287 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:14,287 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:14,519 INFO L129 PetriNetUnfolder]: 179/902 cut-off events. [2022-01-19 00:50:14,519 INFO L130 PetriNetUnfolder]: For 3247/3265 co-relation queries the response was YES. [2022-01-19 00:50:14,523 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3274 conditions, 902 events. 179/902 cut-off events. For 3247/3265 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5318 event pairs, 71 based on Foata normal form. 1/870 useless extension candidates. Maximal degree in co-relation 3148. Up to 292 conditions per place. [2022-01-19 00:50:14,526 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 81 selfloop transitions, 21 changer transitions 20/257 dead transitions. [2022-01-19 00:50:14,526 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 257 transitions, 1817 flow [2022-01-19 00:50:14,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 00:50:14,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 00:50:14,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2205 transitions. [2022-01-19 00:50:14,528 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7830255681818182 [2022-01-19 00:50:14,528 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2205 transitions. [2022-01-19 00:50:14,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2205 transitions. [2022-01-19 00:50:14,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:14,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2205 transitions. [2022-01-19 00:50:14,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 137.8125) internal successors, (2205), 16 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:50:14,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 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 00:50:14,534 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 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 00:50:14,534 INFO L186 Difference]: Start difference. First operand has 241 places, 208 transitions, 1049 flow. Second operand 16 states and 2205 transitions. [2022-01-19 00:50:14,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 257 transitions, 1817 flow [2022-01-19 00:50:14,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 257 transitions, 1622 flow, removed 95 selfloop flow, removed 6 redundant places. [2022-01-19 00:50:14,548 INFO L242 Difference]: Finished difference. Result has 253 places, 218 transitions, 1159 flow [2022-01-19 00:50:14,548 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1159, PETRI_PLACES=253, PETRI_TRANSITIONS=218} [2022-01-19 00:50:14,548 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 94 predicate places. [2022-01-19 00:50:14,548 INFO L470 AbstractCegarLoop]: Abstraction has has 253 places, 218 transitions, 1159 flow [2022-01-19 00:50:14,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:14,549 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:14,549 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] [2022-01-19 00:50:14,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 00:50:14,549 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:14,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:14,549 INFO L85 PathProgramCache]: Analyzing trace with hash 2134941247, now seen corresponding path program 4 times [2022-01-19 00:50:14,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:14,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977208001] [2022-01-19 00:50:14,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:14,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:14,635 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 00:50:14,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:14,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977208001] [2022-01-19 00:50:14,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977208001] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:14,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:14,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:14,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920517399] [2022-01-19 00:50:14,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:14,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:14,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:14,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:14,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:14,637 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:14,637 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 218 transitions, 1159 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:14,637 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:14,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:14,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:14,878 INFO L129 PetriNetUnfolder]: 186/921 cut-off events. [2022-01-19 00:50:14,878 INFO L130 PetriNetUnfolder]: For 3368/3389 co-relation queries the response was YES. [2022-01-19 00:50:14,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3390 conditions, 921 events. 186/921 cut-off events. For 3368/3389 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5471 event pairs, 80 based on Foata normal form. 2/890 useless extension candidates. Maximal degree in co-relation 3258. Up to 294 conditions per place. [2022-01-19 00:50:14,886 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 86 selfloop transitions, 24 changer transitions 21/266 dead transitions. [2022-01-19 00:50:14,886 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 266 transitions, 1958 flow [2022-01-19 00:50:14,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 00:50:14,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 00:50:14,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2344 transitions. [2022-01-19 00:50:14,888 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7834224598930482 [2022-01-19 00:50:14,888 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2344 transitions. [2022-01-19 00:50:14,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2344 transitions. [2022-01-19 00:50:14,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:14,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2344 transitions. [2022-01-19 00:50:14,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.88235294117646) internal successors, (2344), 17 states have internal predecessors, (2344), 0 states have call successors, (0), 0 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 00:50:14,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:50:14,893 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:50:14,893 INFO L186 Difference]: Start difference. First operand has 253 places, 218 transitions, 1159 flow. Second operand 17 states and 2344 transitions. [2022-01-19 00:50:14,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 266 transitions, 1958 flow [2022-01-19 00:50:14,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 266 transitions, 1817 flow, removed 49 selfloop flow, removed 8 redundant places. [2022-01-19 00:50:14,908 INFO L242 Difference]: Finished difference. Result has 266 places, 231 transitions, 1333 flow [2022-01-19 00:50:14,909 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1333, PETRI_PLACES=266, PETRI_TRANSITIONS=231} [2022-01-19 00:50:14,909 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 107 predicate places. [2022-01-19 00:50:14,909 INFO L470 AbstractCegarLoop]: Abstraction has has 266 places, 231 transitions, 1333 flow [2022-01-19 00:50:14,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:14,909 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:14,910 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] [2022-01-19 00:50:14,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-19 00:50:14,910 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:14,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:14,910 INFO L85 PathProgramCache]: Analyzing trace with hash -845261417, now seen corresponding path program 5 times [2022-01-19 00:50:14,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:14,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684653966] [2022-01-19 00:50:14,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:14,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:14,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:50:14,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:14,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684653966] [2022-01-19 00:50:14,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684653966] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:14,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:14,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:14,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766423029] [2022-01-19 00:50:14,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:14,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:14,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:14,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:14,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:14,990 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:14,990 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 231 transitions, 1333 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:14,990 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:14,990 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:14,990 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:15,310 INFO L129 PetriNetUnfolder]: 185/923 cut-off events. [2022-01-19 00:50:15,310 INFO L130 PetriNetUnfolder]: For 4086/4110 co-relation queries the response was YES. [2022-01-19 00:50:15,314 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3549 conditions, 923 events. 185/923 cut-off events. For 4086/4110 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5529 event pairs, 71 based on Foata normal form. 1/890 useless extension candidates. Maximal degree in co-relation 3411. Up to 247 conditions per place. [2022-01-19 00:50:15,316 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 110 selfloop transitions, 27 changer transitions 35/307 dead transitions. [2022-01-19 00:50:15,317 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 307 transitions, 2431 flow [2022-01-19 00:50:15,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 00:50:15,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 00:50:15,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3299 transitions. [2022-01-19 00:50:15,320 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7810132575757576 [2022-01-19 00:50:15,320 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3299 transitions. [2022-01-19 00:50:15,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3299 transitions. [2022-01-19 00:50:15,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:15,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3299 transitions. [2022-01-19 00:50:15,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 137.45833333333334) internal successors, (3299), 24 states have internal predecessors, (3299), 0 states have call successors, (0), 0 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 00:50:15,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 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 00:50:15,328 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 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 00:50:15,328 INFO L186 Difference]: Start difference. First operand has 266 places, 231 transitions, 1333 flow. Second operand 24 states and 3299 transitions. [2022-01-19 00:50:15,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 307 transitions, 2431 flow [2022-01-19 00:50:15,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 307 transitions, 2298 flow, removed 64 selfloop flow, removed 7 redundant places. [2022-01-19 00:50:15,347 INFO L242 Difference]: Finished difference. Result has 293 places, 233 transitions, 1401 flow [2022-01-19 00:50:15,347 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1240, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1401, PETRI_PLACES=293, PETRI_TRANSITIONS=233} [2022-01-19 00:50:15,347 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 134 predicate places. [2022-01-19 00:50:15,347 INFO L470 AbstractCegarLoop]: Abstraction has has 293 places, 233 transitions, 1401 flow [2022-01-19 00:50:15,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:15,348 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:15,348 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] [2022-01-19 00:50:15,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-19 00:50:15,348 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:15,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:15,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1901576121, now seen corresponding path program 6 times [2022-01-19 00:50:15,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:15,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811036378] [2022-01-19 00:50:15,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:15,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:15,417 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 00:50:15,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:15,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811036378] [2022-01-19 00:50:15,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811036378] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:15,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:15,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:15,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359803266] [2022-01-19 00:50:15,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:15,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:15,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:15,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:15,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:15,419 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:15,420 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 233 transitions, 1401 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:15,420 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:15,420 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:15,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:15,715 INFO L129 PetriNetUnfolder]: 192/966 cut-off events. [2022-01-19 00:50:15,715 INFO L130 PetriNetUnfolder]: For 5157/5179 co-relation queries the response was YES. [2022-01-19 00:50:15,720 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3869 conditions, 966 events. 192/966 cut-off events. For 5157/5179 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5969 event pairs, 75 based on Foata normal form. 6/938 useless extension candidates. Maximal degree in co-relation 3753. Up to 297 conditions per place. [2022-01-19 00:50:15,724 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 94 selfloop transitions, 26 changer transitions 29/284 dead transitions. [2022-01-19 00:50:15,724 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 284 transitions, 2264 flow [2022-01-19 00:50:15,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 00:50:15,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 00:50:15,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3016 transitions. [2022-01-19 00:50:15,727 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7789256198347108 [2022-01-19 00:50:15,727 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3016 transitions. [2022-01-19 00:50:15,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3016 transitions. [2022-01-19 00:50:15,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:15,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3016 transitions. [2022-01-19 00:50:15,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.0909090909091) internal successors, (3016), 22 states have internal predecessors, (3016), 0 states have call successors, (0), 0 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 00:50:15,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 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 00:50:15,734 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 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 00:50:15,734 INFO L186 Difference]: Start difference. First operand has 293 places, 233 transitions, 1401 flow. Second operand 22 states and 3016 transitions. [2022-01-19 00:50:15,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 284 transitions, 2264 flow [2022-01-19 00:50:15,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 284 transitions, 2175 flow, removed 37 selfloop flow, removed 17 redundant places. [2022-01-19 00:50:15,756 INFO L242 Difference]: Finished difference. Result has 295 places, 237 transitions, 1502 flow [2022-01-19 00:50:15,757 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1351, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1502, PETRI_PLACES=295, PETRI_TRANSITIONS=237} [2022-01-19 00:50:15,757 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 136 predicate places. [2022-01-19 00:50:15,757 INFO L470 AbstractCegarLoop]: Abstraction has has 295 places, 237 transitions, 1502 flow [2022-01-19 00:50:15,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:15,757 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:15,757 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] [2022-01-19 00:50:15,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-19 00:50:15,758 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:15,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:15,758 INFO L85 PathProgramCache]: Analyzing trace with hash -2046587005, now seen corresponding path program 7 times [2022-01-19 00:50:15,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:15,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593363292] [2022-01-19 00:50:15,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:15,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:15,836 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 00:50:15,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:15,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593363292] [2022-01-19 00:50:15,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593363292] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:15,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:15,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:15,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59926127] [2022-01-19 00:50:15,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:15,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:15,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:15,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:15,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:15,838 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:15,839 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 237 transitions, 1502 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:15,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:15,839 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:15,839 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:16,132 INFO L129 PetriNetUnfolder]: 192/992 cut-off events. [2022-01-19 00:50:16,132 INFO L130 PetriNetUnfolder]: For 5311/5336 co-relation queries the response was YES. [2022-01-19 00:50:16,138 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3985 conditions, 992 events. 192/992 cut-off events. For 5311/5336 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6256 event pairs, 84 based on Foata normal form. 2/961 useless extension candidates. Maximal degree in co-relation 3861. Up to 301 conditions per place. [2022-01-19 00:50:16,142 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 98 selfloop transitions, 27 changer transitions 28/288 dead transitions. [2022-01-19 00:50:16,143 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 288 transitions, 2522 flow [2022-01-19 00:50:16,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 00:50:16,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 00:50:16,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2888 transitions. [2022-01-19 00:50:16,145 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7813852813852814 [2022-01-19 00:50:16,145 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2888 transitions. [2022-01-19 00:50:16,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2888 transitions. [2022-01-19 00:50:16,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:16,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2888 transitions. [2022-01-19 00:50:16,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 137.52380952380952) internal successors, (2888), 21 states have internal predecessors, (2888), 0 states have call successors, (0), 0 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 00:50:16,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 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 00:50:16,152 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 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 00:50:16,152 INFO L186 Difference]: Start difference. First operand has 295 places, 237 transitions, 1502 flow. Second operand 21 states and 2888 transitions. [2022-01-19 00:50:16,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 288 transitions, 2522 flow [2022-01-19 00:50:16,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 288 transitions, 2385 flow, removed 54 selfloop flow, removed 13 redundant places. [2022-01-19 00:50:16,178 INFO L242 Difference]: Finished difference. Result has 304 places, 245 transitions, 1707 flow [2022-01-19 00:50:16,178 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1447, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1707, PETRI_PLACES=304, PETRI_TRANSITIONS=245} [2022-01-19 00:50:16,178 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 145 predicate places. [2022-01-19 00:50:16,179 INFO L470 AbstractCegarLoop]: Abstraction has has 304 places, 245 transitions, 1707 flow [2022-01-19 00:50:16,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:16,179 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:16,179 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] [2022-01-19 00:50:16,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-19 00:50:16,179 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:16,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:16,180 INFO L85 PathProgramCache]: Analyzing trace with hash 827566539, now seen corresponding path program 8 times [2022-01-19 00:50:16,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:16,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213590423] [2022-01-19 00:50:16,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:16,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:16,257 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 00:50:16,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:16,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213590423] [2022-01-19 00:50:16,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213590423] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:16,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:16,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:16,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818028231] [2022-01-19 00:50:16,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:16,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:16,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:16,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:16,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:16,258 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:16,259 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 245 transitions, 1707 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:16,259 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:16,259 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:16,259 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:16,578 INFO L129 PetriNetUnfolder]: 189/1013 cut-off events. [2022-01-19 00:50:16,578 INFO L130 PetriNetUnfolder]: For 6311/6336 co-relation queries the response was YES. [2022-01-19 00:50:16,584 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4199 conditions, 1013 events. 189/1013 cut-off events. For 6311/6336 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6568 event pairs, 88 based on Foata normal form. 1/979 useless extension candidates. Maximal degree in co-relation 4043. Up to 318 conditions per place. [2022-01-19 00:50:16,588 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 91 selfloop transitions, 31 changer transitions 30/287 dead transitions. [2022-01-19 00:50:16,588 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 287 transitions, 2659 flow [2022-01-19 00:50:16,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 00:50:16,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 00:50:16,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2748 transitions. [2022-01-19 00:50:16,592 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7806818181818181 [2022-01-19 00:50:16,592 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2748 transitions. [2022-01-19 00:50:16,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2748 transitions. [2022-01-19 00:50:16,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:16,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2748 transitions. [2022-01-19 00:50:16,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.4) internal successors, (2748), 20 states have internal predecessors, (2748), 0 states have call successors, (0), 0 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 00:50:16,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:50:16,599 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:50:16,600 INFO L186 Difference]: Start difference. First operand has 304 places, 245 transitions, 1707 flow. Second operand 20 states and 2748 transitions. [2022-01-19 00:50:16,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 287 transitions, 2659 flow [2022-01-19 00:50:16,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 287 transitions, 2489 flow, removed 69 selfloop flow, removed 13 redundant places. [2022-01-19 00:50:16,630 INFO L242 Difference]: Finished difference. Result has 310 places, 249 transitions, 1795 flow [2022-01-19 00:50:16,630 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1622, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1795, PETRI_PLACES=310, PETRI_TRANSITIONS=249} [2022-01-19 00:50:16,631 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 151 predicate places. [2022-01-19 00:50:16,632 INFO L470 AbstractCegarLoop]: Abstraction has has 310 places, 249 transitions, 1795 flow [2022-01-19 00:50:16,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:16,633 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:16,633 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] [2022-01-19 00:50:16,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-19 00:50:16,633 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:16,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:16,633 INFO L85 PathProgramCache]: Analyzing trace with hash 708724587, now seen corresponding path program 9 times [2022-01-19 00:50:16,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:16,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613595764] [2022-01-19 00:50:16,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:16,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:16,712 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 00:50:16,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:16,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613595764] [2022-01-19 00:50:16,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613595764] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:16,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:16,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:16,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220608676] [2022-01-19 00:50:16,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:16,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:16,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:16,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:16,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:16,715 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:16,716 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 249 transitions, 1795 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:16,716 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:16,716 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:16,716 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:17,010 INFO L129 PetriNetUnfolder]: 174/950 cut-off events. [2022-01-19 00:50:17,010 INFO L130 PetriNetUnfolder]: For 5200/5229 co-relation queries the response was YES. [2022-01-19 00:50:17,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3820 conditions, 950 events. 174/950 cut-off events. For 5200/5229 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5975 event pairs, 71 based on Foata normal form. 10/927 useless extension candidates. Maximal degree in co-relation 3679. Up to 304 conditions per place. [2022-01-19 00:50:17,025 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 92 selfloop transitions, 19 changer transitions 30/276 dead transitions. [2022-01-19 00:50:17,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 276 transitions, 2382 flow [2022-01-19 00:50:17,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:50:17,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:50:17,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2468 transitions. [2022-01-19 00:50:17,031 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7790404040404041 [2022-01-19 00:50:17,031 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2468 transitions. [2022-01-19 00:50:17,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2468 transitions. [2022-01-19 00:50:17,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:17,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2468 transitions. [2022-01-19 00:50:17,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.11111111111111) internal successors, (2468), 18 states have internal predecessors, (2468), 0 states have call successors, (0), 0 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 00:50:17,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 00:50:17,043 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 00:50:17,043 INFO L186 Difference]: Start difference. First operand has 310 places, 249 transitions, 1795 flow. Second operand 18 states and 2468 transitions. [2022-01-19 00:50:17,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 276 transitions, 2382 flow [2022-01-19 00:50:17,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 276 transitions, 2273 flow, removed 23 selfloop flow, removed 14 redundant places. [2022-01-19 00:50:17,070 INFO L242 Difference]: Finished difference. Result has 308 places, 234 transitions, 1537 flow [2022-01-19 00:50:17,071 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1708, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1537, PETRI_PLACES=308, PETRI_TRANSITIONS=234} [2022-01-19 00:50:17,071 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 149 predicate places. [2022-01-19 00:50:17,071 INFO L470 AbstractCegarLoop]: Abstraction has has 308 places, 234 transitions, 1537 flow [2022-01-19 00:50:17,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:17,072 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:17,072 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] [2022-01-19 00:50:17,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-19 00:50:17,072 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:17,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:17,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1863994139, now seen corresponding path program 10 times [2022-01-19 00:50:17,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:17,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995390145] [2022-01-19 00:50:17,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:17,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:17,145 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 00:50:17,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:17,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995390145] [2022-01-19 00:50:17,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995390145] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:17,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:17,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:17,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899290508] [2022-01-19 00:50:17,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:17,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:17,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:17,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:17,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:17,147 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:17,147 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 234 transitions, 1537 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:17,147 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:17,147 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:17,148 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:17,382 INFO L129 PetriNetUnfolder]: 167/932 cut-off events. [2022-01-19 00:50:17,382 INFO L130 PetriNetUnfolder]: For 4857/4875 co-relation queries the response was YES. [2022-01-19 00:50:17,388 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3665 conditions, 932 events. 167/932 cut-off events. For 4857/4875 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5809 event pairs, 85 based on Foata normal form. 1/900 useless extension candidates. Maximal degree in co-relation 3586. Up to 300 conditions per place. [2022-01-19 00:50:17,391 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 80 selfloop transitions, 16 changer transitions 25/256 dead transitions. [2022-01-19 00:50:17,391 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 256 transitions, 2066 flow [2022-01-19 00:50:17,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:50:17,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:50:17,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2471 transitions. [2022-01-19 00:50:17,393 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7799873737373737 [2022-01-19 00:50:17,393 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2471 transitions. [2022-01-19 00:50:17,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2471 transitions. [2022-01-19 00:50:17,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:17,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2471 transitions. [2022-01-19 00:50:17,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.27777777777777) internal successors, (2471), 18 states have internal predecessors, (2471), 0 states have call successors, (0), 0 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 00:50:17,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 00:50:17,399 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 00:50:17,399 INFO L186 Difference]: Start difference. First operand has 308 places, 234 transitions, 1537 flow. Second operand 18 states and 2471 transitions. [2022-01-19 00:50:17,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 256 transitions, 2066 flow [2022-01-19 00:50:17,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 256 transitions, 1937 flow, removed 23 selfloop flow, removed 18 redundant places. [2022-01-19 00:50:17,424 INFO L242 Difference]: Finished difference. Result has 292 places, 226 transitions, 1379 flow [2022-01-19 00:50:17,425 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1440, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1379, PETRI_PLACES=292, PETRI_TRANSITIONS=226} [2022-01-19 00:50:17,425 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 133 predicate places. [2022-01-19 00:50:17,425 INFO L470 AbstractCegarLoop]: Abstraction has has 292 places, 226 transitions, 1379 flow [2022-01-19 00:50:17,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:17,426 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:17,426 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] [2022-01-19 00:50:17,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-19 00:50:17,426 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:17,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:17,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1263072555, now seen corresponding path program 11 times [2022-01-19 00:50:17,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:17,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734202116] [2022-01-19 00:50:17,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:17,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:17,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:17,516 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 00:50:17,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:17,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734202116] [2022-01-19 00:50:17,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734202116] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:17,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:17,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:17,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22334709] [2022-01-19 00:50:17,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:17,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:17,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:17,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:17,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:17,518 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:17,518 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 226 transitions, 1379 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:17,518 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:17,519 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:17,519 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:17,770 INFO L129 PetriNetUnfolder]: 163/924 cut-off events. [2022-01-19 00:50:17,770 INFO L130 PetriNetUnfolder]: For 4204/4222 co-relation queries the response was YES. [2022-01-19 00:50:17,776 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3536 conditions, 924 events. 163/924 cut-off events. For 4204/4222 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5701 event pairs, 86 based on Foata normal form. 1/891 useless extension candidates. Maximal degree in co-relation 3462. Up to 300 conditions per place. [2022-01-19 00:50:17,779 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 75 selfloop transitions, 21 changer transitions 26/257 dead transitions. [2022-01-19 00:50:17,779 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 257 transitions, 2082 flow [2022-01-19 00:50:17,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 00:50:17,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 00:50:17,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2339 transitions. [2022-01-19 00:50:17,781 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7817513368983957 [2022-01-19 00:50:17,781 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2339 transitions. [2022-01-19 00:50:17,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2339 transitions. [2022-01-19 00:50:17,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:17,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2339 transitions. [2022-01-19 00:50:17,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.58823529411765) internal successors, (2339), 17 states have internal predecessors, (2339), 0 states have call successors, (0), 0 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 00:50:17,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:50:17,787 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:50:17,787 INFO L186 Difference]: Start difference. First operand has 292 places, 226 transitions, 1379 flow. Second operand 17 states and 2339 transitions. [2022-01-19 00:50:17,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 257 transitions, 2082 flow [2022-01-19 00:50:17,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 257 transitions, 1937 flow, removed 38 selfloop flow, removed 16 redundant places. [2022-01-19 00:50:17,809 INFO L242 Difference]: Finished difference. Result has 283 places, 228 transitions, 1416 flow [2022-01-19 00:50:17,809 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1309, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1416, PETRI_PLACES=283, PETRI_TRANSITIONS=228} [2022-01-19 00:50:17,809 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 124 predicate places. [2022-01-19 00:50:17,809 INFO L470 AbstractCegarLoop]: Abstraction has has 283 places, 228 transitions, 1416 flow [2022-01-19 00:50:17,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:17,810 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:17,810 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] [2022-01-19 00:50:17,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-19 00:50:17,810 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:17,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:17,810 INFO L85 PathProgramCache]: Analyzing trace with hash -801537573, now seen corresponding path program 12 times [2022-01-19 00:50:17,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:17,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425307094] [2022-01-19 00:50:17,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:17,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:17,898 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 00:50:17,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:17,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425307094] [2022-01-19 00:50:17,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425307094] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:17,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:17,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:17,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525841826] [2022-01-19 00:50:17,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:17,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:17,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:17,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:17,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:17,899 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:17,900 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 228 transitions, 1416 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:17,900 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:17,900 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:17,900 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:18,121 INFO L129 PetriNetUnfolder]: 150/865 cut-off events. [2022-01-19 00:50:18,121 INFO L130 PetriNetUnfolder]: For 3328/3346 co-relation queries the response was YES. [2022-01-19 00:50:18,125 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3156 conditions, 865 events. 150/865 cut-off events. For 3328/3346 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5137 event pairs, 83 based on Foata normal form. 1/834 useless extension candidates. Maximal degree in co-relation 3085. Up to 287 conditions per place. [2022-01-19 00:50:18,127 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 70 selfloop transitions, 5 changer transitions 31/241 dead transitions. [2022-01-19 00:50:18,127 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 241 transitions, 1717 flow [2022-01-19 00:50:18,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:50:18,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:50:18,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2464 transitions. [2022-01-19 00:50:18,129 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2022-01-19 00:50:18,129 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2464 transitions. [2022-01-19 00:50:18,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2464 transitions. [2022-01-19 00:50:18,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:18,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2464 transitions. [2022-01-19 00:50:18,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.88888888888889) internal successors, (2464), 18 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:50:18,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 00:50:18,137 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 00:50:18,137 INFO L186 Difference]: Start difference. First operand has 283 places, 228 transitions, 1416 flow. Second operand 18 states and 2464 transitions. [2022-01-19 00:50:18,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 241 transitions, 1717 flow [2022-01-19 00:50:18,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 241 transitions, 1619 flow, removed 30 selfloop flow, removed 11 redundant places. [2022-01-19 00:50:18,154 INFO L242 Difference]: Finished difference. Result has 286 places, 208 transitions, 1081 flow [2022-01-19 00:50:18,154 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1081, PETRI_PLACES=286, PETRI_TRANSITIONS=208} [2022-01-19 00:50:18,155 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 127 predicate places. [2022-01-19 00:50:18,155 INFO L470 AbstractCegarLoop]: Abstraction has has 286 places, 208 transitions, 1081 flow [2022-01-19 00:50:18,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:18,155 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:18,155 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] [2022-01-19 00:50:18,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-19 00:50:18,155 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:18,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:18,156 INFO L85 PathProgramCache]: Analyzing trace with hash -836472735, now seen corresponding path program 13 times [2022-01-19 00:50:18,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:18,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881545343] [2022-01-19 00:50:18,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:18,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:18,225 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 00:50:18,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:18,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881545343] [2022-01-19 00:50:18,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881545343] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:18,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:18,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:18,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076119033] [2022-01-19 00:50:18,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:18,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:18,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:18,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:18,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:18,228 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:18,228 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 208 transitions, 1081 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:18,228 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:18,228 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:18,228 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:18,449 INFO L129 PetriNetUnfolder]: 143/819 cut-off events. [2022-01-19 00:50:18,450 INFO L130 PetriNetUnfolder]: For 3088/3110 co-relation queries the response was YES. [2022-01-19 00:50:18,454 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2921 conditions, 819 events. 143/819 cut-off events. For 3088/3110 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4743 event pairs, 65 based on Foata normal form. 8/798 useless extension candidates. Maximal degree in co-relation 2853. Up to 261 conditions per place. [2022-01-19 00:50:18,456 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 72 selfloop transitions, 21 changer transitions 22/250 dead transitions. [2022-01-19 00:50:18,456 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 250 transitions, 1818 flow [2022-01-19 00:50:18,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 00:50:18,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 00:50:18,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2206 transitions. [2022-01-19 00:50:18,458 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7833806818181818 [2022-01-19 00:50:18,458 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2206 transitions. [2022-01-19 00:50:18,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2206 transitions. [2022-01-19 00:50:18,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:18,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2206 transitions. [2022-01-19 00:50:18,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 137.875) internal successors, (2206), 16 states have internal predecessors, (2206), 0 states have call successors, (0), 0 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 00:50:18,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 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 00:50:18,463 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 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 00:50:18,463 INFO L186 Difference]: Start difference. First operand has 286 places, 208 transitions, 1081 flow. Second operand 16 states and 2206 transitions. [2022-01-19 00:50:18,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 250 transitions, 1818 flow [2022-01-19 00:50:18,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 250 transitions, 1601 flow, removed 61 selfloop flow, removed 22 redundant places. [2022-01-19 00:50:18,477 INFO L242 Difference]: Finished difference. Result has 261 places, 217 transitions, 1187 flow [2022-01-19 00:50:18,477 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1187, PETRI_PLACES=261, PETRI_TRANSITIONS=217} [2022-01-19 00:50:18,477 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 102 predicate places. [2022-01-19 00:50:18,478 INFO L470 AbstractCegarLoop]: Abstraction has has 261 places, 217 transitions, 1187 flow [2022-01-19 00:50:18,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:18,478 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:18,478 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] [2022-01-19 00:50:18,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-19 00:50:18,478 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:18,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:18,479 INFO L85 PathProgramCache]: Analyzing trace with hash -358241663, now seen corresponding path program 14 times [2022-01-19 00:50:18,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:18,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983179301] [2022-01-19 00:50:18,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:18,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:18,553 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 00:50:18,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:18,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983179301] [2022-01-19 00:50:18,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983179301] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:18,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:18,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:18,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792811910] [2022-01-19 00:50:18,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:18,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:18,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:18,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:18,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:18,556 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:18,557 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 217 transitions, 1187 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:18,557 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:18,557 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:18,557 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:18,823 INFO L129 PetriNetUnfolder]: 142/826 cut-off events. [2022-01-19 00:50:18,823 INFO L130 PetriNetUnfolder]: For 2703/2718 co-relation queries the response was YES. [2022-01-19 00:50:18,827 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2885 conditions, 826 events. 142/826 cut-off events. For 2703/2718 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4800 event pairs, 63 based on Foata normal form. 1/797 useless extension candidates. Maximal degree in co-relation 2824. Up to 261 conditions per place. [2022-01-19 00:50:18,829 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 76 selfloop transitions, 23 changer transitions 28/262 dead transitions. [2022-01-19 00:50:18,829 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 262 transitions, 1945 flow [2022-01-19 00:50:18,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 00:50:18,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 00:50:18,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2745 transitions. [2022-01-19 00:50:18,831 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7798295454545454 [2022-01-19 00:50:18,831 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2745 transitions. [2022-01-19 00:50:18,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2745 transitions. [2022-01-19 00:50:18,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:18,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2745 transitions. [2022-01-19 00:50:18,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.25) internal successors, (2745), 20 states have internal predecessors, (2745), 0 states have call successors, (0), 0 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 00:50:18,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:50:18,837 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:50:18,837 INFO L186 Difference]: Start difference. First operand has 261 places, 217 transitions, 1187 flow. Second operand 20 states and 2745 transitions. [2022-01-19 00:50:18,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 262 transitions, 1945 flow [2022-01-19 00:50:18,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 262 transitions, 1799 flow, removed 50 selfloop flow, removed 8 redundant places. [2022-01-19 00:50:18,851 INFO L242 Difference]: Finished difference. Result has 280 places, 224 transitions, 1292 flow [2022-01-19 00:50:18,851 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1292, PETRI_PLACES=280, PETRI_TRANSITIONS=224} [2022-01-19 00:50:18,852 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 121 predicate places. [2022-01-19 00:50:18,852 INFO L470 AbstractCegarLoop]: Abstraction has has 280 places, 224 transitions, 1292 flow [2022-01-19 00:50:18,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:18,852 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:18,852 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] [2022-01-19 00:50:18,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-19 00:50:18,852 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:18,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:18,852 INFO L85 PathProgramCache]: Analyzing trace with hash 149169609, now seen corresponding path program 15 times [2022-01-19 00:50:18,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:18,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240363199] [2022-01-19 00:50:18,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:18,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:18,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:18,928 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 00:50:18,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:18,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240363199] [2022-01-19 00:50:18,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240363199] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:18,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:18,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:18,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846971672] [2022-01-19 00:50:18,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:18,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:18,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:18,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:18,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:18,930 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:18,931 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 224 transitions, 1292 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:18,931 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:18,931 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:18,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:19,236 INFO L129 PetriNetUnfolder]: 144/864 cut-off events. [2022-01-19 00:50:19,237 INFO L130 PetriNetUnfolder]: For 3273/3288 co-relation queries the response was YES. [2022-01-19 00:50:19,241 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3076 conditions, 864 events. 144/864 cut-off events. For 3273/3288 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5194 event pairs, 66 based on Foata normal form. 1/836 useless extension candidates. Maximal degree in co-relation 3006. Up to 264 conditions per place. [2022-01-19 00:50:19,244 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 75 selfloop transitions, 27 changer transitions 30/267 dead transitions. [2022-01-19 00:50:19,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 267 transitions, 2061 flow [2022-01-19 00:50:19,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 00:50:19,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 00:50:19,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3012 transitions. [2022-01-19 00:50:19,247 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7778925619834711 [2022-01-19 00:50:19,247 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3012 transitions. [2022-01-19 00:50:19,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3012 transitions. [2022-01-19 00:50:19,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:19,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3012 transitions. [2022-01-19 00:50:19,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 136.9090909090909) internal successors, (3012), 22 states have internal predecessors, (3012), 0 states have call successors, (0), 0 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 00:50:19,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 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 00:50:19,253 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 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 00:50:19,253 INFO L186 Difference]: Start difference. First operand has 280 places, 224 transitions, 1292 flow. Second operand 22 states and 3012 transitions. [2022-01-19 00:50:19,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 267 transitions, 2061 flow [2022-01-19 00:50:19,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 267 transitions, 1974 flow, removed 36 selfloop flow, removed 11 redundant places. [2022-01-19 00:50:19,270 INFO L242 Difference]: Finished difference. Result has 293 places, 229 transitions, 1409 flow [2022-01-19 00:50:19,270 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1251, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1409, PETRI_PLACES=293, PETRI_TRANSITIONS=229} [2022-01-19 00:50:19,270 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 134 predicate places. [2022-01-19 00:50:19,270 INFO L470 AbstractCegarLoop]: Abstraction has has 293 places, 229 transitions, 1409 flow [2022-01-19 00:50:19,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:19,271 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:19,271 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] [2022-01-19 00:50:19,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-19 00:50:19,271 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:19,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:19,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1681730419, now seen corresponding path program 16 times [2022-01-19 00:50:19,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:19,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121972356] [2022-01-19 00:50:19,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:19,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:19,342 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 00:50:19,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:19,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121972356] [2022-01-19 00:50:19,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121972356] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:19,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:19,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:19,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610914248] [2022-01-19 00:50:19,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:19,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:19,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:19,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:19,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:19,344 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:19,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 229 transitions, 1409 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:19,345 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:19,345 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:19,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:19,613 INFO L129 PetriNetUnfolder]: 130/803 cut-off events. [2022-01-19 00:50:19,613 INFO L130 PetriNetUnfolder]: For 2750/2765 co-relation queries the response was YES. [2022-01-19 00:50:19,617 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2835 conditions, 803 events. 130/803 cut-off events. For 2750/2765 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4644 event pairs, 65 based on Foata normal form. 1/775 useless extension candidates. Maximal degree in co-relation 2760. Up to 261 conditions per place. [2022-01-19 00:50:19,618 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 68 selfloop transitions, 15 changer transitions 29/247 dead transitions. [2022-01-19 00:50:19,618 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 247 transitions, 1818 flow [2022-01-19 00:50:19,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:50:19,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:50:19,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2466 transitions. [2022-01-19 00:50:19,621 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7784090909090909 [2022-01-19 00:50:19,621 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2466 transitions. [2022-01-19 00:50:19,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2466 transitions. [2022-01-19 00:50:19,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:19,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2466 transitions. [2022-01-19 00:50:19,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.0) internal successors, (2466), 18 states have internal predecessors, (2466), 0 states have call successors, (0), 0 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 00:50:19,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 00:50:19,626 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 00:50:19,626 INFO L186 Difference]: Start difference. First operand has 293 places, 229 transitions, 1409 flow. Second operand 18 states and 2466 transitions. [2022-01-19 00:50:19,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 247 transitions, 1818 flow [2022-01-19 00:50:19,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 247 transitions, 1752 flow, removed 23 selfloop flow, removed 13 redundant places. [2022-01-19 00:50:19,640 INFO L242 Difference]: Finished difference. Result has 290 places, 214 transitions, 1200 flow [2022-01-19 00:50:19,641 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1360, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1200, PETRI_PLACES=290, PETRI_TRANSITIONS=214} [2022-01-19 00:50:19,641 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 131 predicate places. [2022-01-19 00:50:19,642 INFO L470 AbstractCegarLoop]: Abstraction has has 290 places, 214 transitions, 1200 flow [2022-01-19 00:50:19,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:19,642 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:19,642 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] [2022-01-19 00:50:19,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-19 00:50:19,642 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:19,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:19,642 INFO L85 PathProgramCache]: Analyzing trace with hash -2094668727, now seen corresponding path program 17 times [2022-01-19 00:50:19,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:19,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415971307] [2022-01-19 00:50:19,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:19,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:19,715 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 00:50:19,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:19,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415971307] [2022-01-19 00:50:19,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415971307] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:19,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:19,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:19,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644201745] [2022-01-19 00:50:19,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:19,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:19,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:19,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:19,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:19,716 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:19,717 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 214 transitions, 1200 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:19,717 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:19,717 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:19,717 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:19,961 INFO L129 PetriNetUnfolder]: 130/800 cut-off events. [2022-01-19 00:50:19,962 INFO L130 PetriNetUnfolder]: For 2770/2785 co-relation queries the response was YES. [2022-01-19 00:50:19,966 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2847 conditions, 800 events. 130/800 cut-off events. For 2770/2785 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4617 event pairs, 66 based on Foata normal form. 1/771 useless extension candidates. Maximal degree in co-relation 2776. Up to 263 conditions per place. [2022-01-19 00:50:19,967 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 68 selfloop transitions, 23 changer transitions 24/250 dead transitions. [2022-01-19 00:50:19,968 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 250 transitions, 1916 flow [2022-01-19 00:50:19,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 00:50:19,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 00:50:19,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2337 transitions. [2022-01-19 00:50:19,970 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7810828877005348 [2022-01-19 00:50:19,970 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2337 transitions. [2022-01-19 00:50:19,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2337 transitions. [2022-01-19 00:50:19,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:19,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2337 transitions. [2022-01-19 00:50:19,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.47058823529412) internal successors, (2337), 17 states have internal predecessors, (2337), 0 states have call successors, (0), 0 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 00:50:19,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:50:19,974 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:50:19,974 INFO L186 Difference]: Start difference. First operand has 290 places, 214 transitions, 1200 flow. Second operand 17 states and 2337 transitions. [2022-01-19 00:50:19,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 250 transitions, 1916 flow [2022-01-19 00:50:19,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 250 transitions, 1715 flow, removed 48 selfloop flow, removed 20 redundant places. [2022-01-19 00:50:19,988 INFO L242 Difference]: Finished difference. Result has 273 places, 222 transitions, 1305 flow [2022-01-19 00:50:19,988 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1103, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1305, PETRI_PLACES=273, PETRI_TRANSITIONS=222} [2022-01-19 00:50:19,989 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 114 predicate places. [2022-01-19 00:50:19,989 INFO L470 AbstractCegarLoop]: Abstraction has has 273 places, 222 transitions, 1305 flow [2022-01-19 00:50:19,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:19,989 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:19,989 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] [2022-01-19 00:50:19,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-19 00:50:19,989 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:19,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:19,990 INFO L85 PathProgramCache]: Analyzing trace with hash -2023806495, now seen corresponding path program 18 times [2022-01-19 00:50:19,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:19,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689701993] [2022-01-19 00:50:19,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:19,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:20,060 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 00:50:20,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:20,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689701993] [2022-01-19 00:50:20,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689701993] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:20,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:20,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:20,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670831031] [2022-01-19 00:50:20,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:20,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:20,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:20,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:20,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:20,062 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:20,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 222 transitions, 1305 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:20,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:20,063 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:20,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:20,351 INFO L129 PetriNetUnfolder]: 120/774 cut-off events. [2022-01-19 00:50:20,351 INFO L130 PetriNetUnfolder]: For 2129/2144 co-relation queries the response was YES. [2022-01-19 00:50:20,355 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2595 conditions, 774 events. 120/774 cut-off events. For 2129/2144 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4445 event pairs, 64 based on Foata normal form. 1/746 useless extension candidates. Maximal degree in co-relation 2529. Up to 261 conditions per place. [2022-01-19 00:50:20,357 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 65 selfloop transitions, 14 changer transitions 28/242 dead transitions. [2022-01-19 00:50:20,357 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 242 transitions, 1679 flow [2022-01-19 00:50:20,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:50:20,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:50:20,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2468 transitions. [2022-01-19 00:50:20,359 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7790404040404041 [2022-01-19 00:50:20,359 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2468 transitions. [2022-01-19 00:50:20,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2468 transitions. [2022-01-19 00:50:20,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:20,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2468 transitions. [2022-01-19 00:50:20,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.11111111111111) internal successors, (2468), 18 states have internal predecessors, (2468), 0 states have call successors, (0), 0 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 00:50:20,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 00:50:20,364 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 00:50:20,364 INFO L186 Difference]: Start difference. First operand has 273 places, 222 transitions, 1305 flow. Second operand 18 states and 2468 transitions. [2022-01-19 00:50:20,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 242 transitions, 1679 flow [2022-01-19 00:50:20,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 242 transitions, 1574 flow, removed 33 selfloop flow, removed 9 redundant places. [2022-01-19 00:50:20,377 INFO L242 Difference]: Finished difference. Result has 278 places, 211 transitions, 1117 flow [2022-01-19 00:50:20,378 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1117, PETRI_PLACES=278, PETRI_TRANSITIONS=211} [2022-01-19 00:50:20,378 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 119 predicate places. [2022-01-19 00:50:20,378 INFO L470 AbstractCegarLoop]: Abstraction has has 278 places, 211 transitions, 1117 flow [2022-01-19 00:50:20,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:20,378 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:20,379 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] [2022-01-19 00:50:20,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-19 00:50:20,379 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:20,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:20,379 INFO L85 PathProgramCache]: Analyzing trace with hash -503396899, now seen corresponding path program 19 times [2022-01-19 00:50:20,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:20,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945446184] [2022-01-19 00:50:20,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:20,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:20,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:20,462 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 00:50:20,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:20,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945446184] [2022-01-19 00:50:20,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945446184] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:20,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:20,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:20,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382510944] [2022-01-19 00:50:20,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:20,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:20,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:20,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:20,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:20,464 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:20,465 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 211 transitions, 1117 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:20,465 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:20,465 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:20,465 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:20,728 INFO L129 PetriNetUnfolder]: 117/764 cut-off events. [2022-01-19 00:50:20,728 INFO L130 PetriNetUnfolder]: For 1993/2008 co-relation queries the response was YES. [2022-01-19 00:50:20,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2502 conditions, 764 events. 117/764 cut-off events. For 1993/2008 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4296 event pairs, 63 based on Foata normal form. 1/736 useless extension candidates. Maximal degree in co-relation 2437. Up to 253 conditions per place. [2022-01-19 00:50:20,733 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 59 selfloop transitions, 15 changer transitions 29/238 dead transitions. [2022-01-19 00:50:20,733 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 238 transitions, 1608 flow [2022-01-19 00:50:20,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 00:50:20,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 00:50:20,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2870 transitions. [2022-01-19 00:50:20,735 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7765151515151515 [2022-01-19 00:50:20,735 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2870 transitions. [2022-01-19 00:50:20,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2870 transitions. [2022-01-19 00:50:20,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:20,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2870 transitions. [2022-01-19 00:50:20,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 136.66666666666666) internal successors, (2870), 21 states have internal predecessors, (2870), 0 states have call successors, (0), 0 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 00:50:20,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 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 00:50:20,740 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 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 00:50:20,740 INFO L186 Difference]: Start difference. First operand has 278 places, 211 transitions, 1117 flow. Second operand 21 states and 2870 transitions. [2022-01-19 00:50:20,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 238 transitions, 1608 flow [2022-01-19 00:50:20,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 238 transitions, 1480 flow, removed 26 selfloop flow, removed 15 redundant places. [2022-01-19 00:50:20,752 INFO L242 Difference]: Finished difference. Result has 277 places, 208 transitions, 1063 flow [2022-01-19 00:50:20,752 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1063, PETRI_PLACES=277, PETRI_TRANSITIONS=208} [2022-01-19 00:50:20,753 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 118 predicate places. [2022-01-19 00:50:20,753 INFO L470 AbstractCegarLoop]: Abstraction has has 277 places, 208 transitions, 1063 flow [2022-01-19 00:50:20,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:20,753 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:20,753 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] [2022-01-19 00:50:20,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-19 00:50:20,753 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:20,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:20,754 INFO L85 PathProgramCache]: Analyzing trace with hash 2089303793, now seen corresponding path program 20 times [2022-01-19 00:50:20,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:20,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304405540] [2022-01-19 00:50:20,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:20,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:20,827 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 00:50:20,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:20,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304405540] [2022-01-19 00:50:20,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304405540] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:20,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:20,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:20,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042169986] [2022-01-19 00:50:20,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:20,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:20,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:20,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:20,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:20,829 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:20,829 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 208 transitions, 1063 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:20,829 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:20,829 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:20,830 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:21,057 INFO L129 PetriNetUnfolder]: 103/675 cut-off events. [2022-01-19 00:50:21,057 INFO L130 PetriNetUnfolder]: For 1580/1595 co-relation queries the response was YES. [2022-01-19 00:50:21,061 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2152 conditions, 675 events. 103/675 cut-off events. For 1580/1595 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3592 event pairs, 60 based on Foata normal form. 1/647 useless extension candidates. Maximal degree in co-relation 2086. Up to 234 conditions per place. [2022-01-19 00:50:21,062 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 47 selfloop transitions, 0 changer transitions 39/215 dead transitions. [2022-01-19 00:50:21,062 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 215 transitions, 1254 flow [2022-01-19 00:50:21,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:50:21,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:50:21,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2456 transitions. [2022-01-19 00:50:21,073 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7752525252525253 [2022-01-19 00:50:21,073 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2456 transitions. [2022-01-19 00:50:21,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2456 transitions. [2022-01-19 00:50:21,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:21,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2456 transitions. [2022-01-19 00:50:21,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.44444444444446) internal successors, (2456), 18 states have internal predecessors, (2456), 0 states have call successors, (0), 0 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 00:50:21,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 00:50:21,077 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 00:50:21,077 INFO L186 Difference]: Start difference. First operand has 277 places, 208 transitions, 1063 flow. Second operand 18 states and 2456 transitions. [2022-01-19 00:50:21,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 215 transitions, 1254 flow [2022-01-19 00:50:21,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 215 transitions, 1194 flow, removed 14 selfloop flow, removed 17 redundant places. [2022-01-19 00:50:21,086 INFO L242 Difference]: Finished difference. Result has 267 places, 176 transitions, 712 flow [2022-01-19 00:50:21,087 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=712, PETRI_PLACES=267, PETRI_TRANSITIONS=176} [2022-01-19 00:50:21,089 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 108 predicate places. [2022-01-19 00:50:21,089 INFO L470 AbstractCegarLoop]: Abstraction has has 267 places, 176 transitions, 712 flow [2022-01-19 00:50:21,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:21,090 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:21,090 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] [2022-01-19 00:50:21,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-19 00:50:21,091 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:21,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:21,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1809009679, now seen corresponding path program 4 times [2022-01-19 00:50:21,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:21,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354049593] [2022-01-19 00:50:21,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:21,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:21,157 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 00:50:21,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:21,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354049593] [2022-01-19 00:50:21,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354049593] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:21,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:21,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:21,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036534380] [2022-01-19 00:50:21,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:21,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:21,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:21,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:21,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:21,160 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:21,161 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 176 transitions, 712 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:21,161 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:21,161 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:21,161 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:21,424 INFO L129 PetriNetUnfolder]: 104/666 cut-off events. [2022-01-19 00:50:21,424 INFO L130 PetriNetUnfolder]: For 1495/1503 co-relation queries the response was YES. [2022-01-19 00:50:21,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2007 conditions, 666 events. 104/666 cut-off events. For 1495/1503 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3583 event pairs, 49 based on Foata normal form. 1/638 useless extension candidates. Maximal degree in co-relation 1950. Up to 150 conditions per place. [2022-01-19 00:50:21,427 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 68 selfloop transitions, 15 changer transitions 33/236 dead transitions. [2022-01-19 00:50:21,428 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 236 transitions, 1385 flow [2022-01-19 00:50:21,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 00:50:21,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 00:50:21,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2755 transitions. [2022-01-19 00:50:21,429 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7826704545454546 [2022-01-19 00:50:21,429 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2755 transitions. [2022-01-19 00:50:21,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2755 transitions. [2022-01-19 00:50:21,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:21,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2755 transitions. [2022-01-19 00:50:21,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.75) internal successors, (2755), 20 states have internal predecessors, (2755), 0 states have call successors, (0), 0 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 00:50:21,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:50:21,433 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:50:21,433 INFO L186 Difference]: Start difference. First operand has 267 places, 176 transitions, 712 flow. Second operand 20 states and 2755 transitions. [2022-01-19 00:50:21,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 236 transitions, 1385 flow [2022-01-19 00:50:21,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 236 transitions, 1355 flow, removed 14 selfloop flow, removed 10 redundant places. [2022-01-19 00:50:21,440 INFO L242 Difference]: Finished difference. Result has 249 places, 187 transitions, 884 flow [2022-01-19 00:50:21,441 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=884, PETRI_PLACES=249, PETRI_TRANSITIONS=187} [2022-01-19 00:50:21,441 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 90 predicate places. [2022-01-19 00:50:21,441 INFO L470 AbstractCegarLoop]: Abstraction has has 249 places, 187 transitions, 884 flow [2022-01-19 00:50:21,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:21,441 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:21,441 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] [2022-01-19 00:50:21,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-19 00:50:21,442 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:21,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:21,442 INFO L85 PathProgramCache]: Analyzing trace with hash -653441541, now seen corresponding path program 5 times [2022-01-19 00:50:21,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:21,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458063821] [2022-01-19 00:50:21,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:21,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:21,499 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 00:50:21,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:21,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458063821] [2022-01-19 00:50:21,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458063821] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:21,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:21,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:21,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148596502] [2022-01-19 00:50:21,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:21,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:21,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:21,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:21,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:21,501 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:21,502 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 187 transitions, 884 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:21,502 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:21,502 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:21,502 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:21,707 INFO L129 PetriNetUnfolder]: 105/685 cut-off events. [2022-01-19 00:50:21,707 INFO L130 PetriNetUnfolder]: For 2281/2297 co-relation queries the response was YES. [2022-01-19 00:50:21,711 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2258 conditions, 685 events. 105/685 cut-off events. For 2281/2297 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3765 event pairs, 45 based on Foata normal form. 4/661 useless extension candidates. Maximal degree in co-relation 2192. Up to 170 conditions per place. [2022-01-19 00:50:21,712 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 68 selfloop transitions, 23 changer transitions 25/236 dead transitions. [2022-01-19 00:50:21,712 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 236 transitions, 1634 flow [2022-01-19 00:50:21,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 00:50:21,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 00:50:21,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2207 transitions. [2022-01-19 00:50:21,714 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7837357954545454 [2022-01-19 00:50:21,714 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2207 transitions. [2022-01-19 00:50:21,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2207 transitions. [2022-01-19 00:50:21,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:21,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2207 transitions. [2022-01-19 00:50:21,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 137.9375) internal successors, (2207), 16 states have internal predecessors, (2207), 0 states have call successors, (0), 0 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 00:50:21,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 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 00:50:21,717 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 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 00:50:21,717 INFO L186 Difference]: Start difference. First operand has 249 places, 187 transitions, 884 flow. Second operand 16 states and 2207 transitions. [2022-01-19 00:50:21,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 236 transitions, 1634 flow [2022-01-19 00:50:21,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 236 transitions, 1519 flow, removed 50 selfloop flow, removed 10 redundant places. [2022-01-19 00:50:21,727 INFO L242 Difference]: Finished difference. Result has 253 places, 197 transitions, 1048 flow [2022-01-19 00:50:21,727 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1048, PETRI_PLACES=253, PETRI_TRANSITIONS=197} [2022-01-19 00:50:21,728 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 94 predicate places. [2022-01-19 00:50:21,728 INFO L470 AbstractCegarLoop]: Abstraction has has 253 places, 197 transitions, 1048 flow [2022-01-19 00:50:21,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:21,728 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:21,728 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] [2022-01-19 00:50:21,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-19 00:50:21,729 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:21,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:21,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1109799355, now seen corresponding path program 6 times [2022-01-19 00:50:21,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:21,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382765081] [2022-01-19 00:50:21,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:21,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:21,813 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 00:50:21,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:21,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382765081] [2022-01-19 00:50:21,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382765081] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:21,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:21,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:21,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927154816] [2022-01-19 00:50:21,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:21,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:21,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:21,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:21,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:21,815 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:21,815 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 197 transitions, 1048 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:21,815 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:21,816 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:21,816 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:22,086 INFO L129 PetriNetUnfolder]: 116/711 cut-off events. [2022-01-19 00:50:22,086 INFO L130 PetriNetUnfolder]: For 2481/2501 co-relation queries the response was YES. [2022-01-19 00:50:22,089 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2424 conditions, 711 events. 116/711 cut-off events. For 2481/2501 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3981 event pairs, 48 based on Foata normal form. 4/686 useless extension candidates. Maximal degree in co-relation 2356. Up to 169 conditions per place. [2022-01-19 00:50:22,090 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 79 selfloop transitions, 24 changer transitions 33/256 dead transitions. [2022-01-19 00:50:22,091 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 256 transitions, 1940 flow [2022-01-19 00:50:22,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 00:50:22,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 00:50:22,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2890 transitions. [2022-01-19 00:50:22,092 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7819264069264069 [2022-01-19 00:50:22,092 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2890 transitions. [2022-01-19 00:50:22,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2890 transitions. [2022-01-19 00:50:22,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:22,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2890 transitions. [2022-01-19 00:50:22,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 137.61904761904762) internal successors, (2890), 21 states have internal predecessors, (2890), 0 states have call successors, (0), 0 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 00:50:22,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 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 00:50:22,097 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 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 00:50:22,097 INFO L186 Difference]: Start difference. First operand has 253 places, 197 transitions, 1048 flow. Second operand 21 states and 2890 transitions. [2022-01-19 00:50:22,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 256 transitions, 1940 flow [2022-01-19 00:50:22,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 256 transitions, 1819 flow, removed 38 selfloop flow, removed 9 redundant places. [2022-01-19 00:50:22,108 INFO L242 Difference]: Finished difference. Result has 273 places, 207 transitions, 1218 flow [2022-01-19 00:50:22,108 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1218, PETRI_PLACES=273, PETRI_TRANSITIONS=207} [2022-01-19 00:50:22,108 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 114 predicate places. [2022-01-19 00:50:22,108 INFO L470 AbstractCegarLoop]: Abstraction has has 273 places, 207 transitions, 1218 flow [2022-01-19 00:50:22,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:22,109 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:22,109 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] [2022-01-19 00:50:22,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-19 00:50:22,109 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:22,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:22,109 INFO L85 PathProgramCache]: Analyzing trace with hash 376522777, now seen corresponding path program 7 times [2022-01-19 00:50:22,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:22,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55593713] [2022-01-19 00:50:22,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:22,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:22,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:22,183 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 00:50:22,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:22,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55593713] [2022-01-19 00:50:22,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55593713] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:22,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:22,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:22,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254455912] [2022-01-19 00:50:22,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:22,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:22,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:22,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:22,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:22,185 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:22,186 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 207 transitions, 1218 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:22,186 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:22,186 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:22,186 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:22,442 INFO L129 PetriNetUnfolder]: 110/735 cut-off events. [2022-01-19 00:50:22,442 INFO L130 PetriNetUnfolder]: For 3086/3106 co-relation queries the response was YES. [2022-01-19 00:50:22,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2598 conditions, 735 events. 110/735 cut-off events. For 3086/3106 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4263 event pairs, 51 based on Foata normal form. 4/708 useless extension candidates. Maximal degree in co-relation 2521. Up to 186 conditions per place. [2022-01-19 00:50:22,447 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 73 selfloop transitions, 30 changer transitions 33/256 dead transitions. [2022-01-19 00:50:22,447 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 256 transitions, 2107 flow [2022-01-19 00:50:22,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 00:50:22,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 00:50:22,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2750 transitions. [2022-01-19 00:50:22,450 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.78125 [2022-01-19 00:50:22,450 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2750 transitions. [2022-01-19 00:50:22,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2750 transitions. [2022-01-19 00:50:22,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:22,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2750 transitions. [2022-01-19 00:50:22,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.5) internal successors, (2750), 20 states have internal predecessors, (2750), 0 states have call successors, (0), 0 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 00:50:22,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:50:22,454 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:50:22,454 INFO L186 Difference]: Start difference. First operand has 273 places, 207 transitions, 1218 flow. Second operand 20 states and 2750 transitions. [2022-01-19 00:50:22,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 256 transitions, 2107 flow [2022-01-19 00:50:22,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 256 transitions, 1963 flow, removed 58 selfloop flow, removed 12 redundant places. [2022-01-19 00:50:22,468 INFO L242 Difference]: Finished difference. Result has 280 places, 213 transitions, 1345 flow [2022-01-19 00:50:22,468 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1345, PETRI_PLACES=280, PETRI_TRANSITIONS=213} [2022-01-19 00:50:22,468 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 121 predicate places. [2022-01-19 00:50:22,468 INFO L470 AbstractCegarLoop]: Abstraction has has 280 places, 213 transitions, 1345 flow [2022-01-19 00:50:22,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:22,468 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:22,469 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] [2022-01-19 00:50:22,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-19 00:50:22,469 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:22,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:22,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1946033001, now seen corresponding path program 8 times [2022-01-19 00:50:22,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:22,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178892091] [2022-01-19 00:50:22,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:22,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:22,532 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 00:50:22,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:22,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178892091] [2022-01-19 00:50:22,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178892091] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:22,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:22,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:22,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911669149] [2022-01-19 00:50:22,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:22,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:22,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:22,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:22,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:22,534 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:22,534 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 213 transitions, 1345 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:22,534 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:22,534 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:22,534 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:22,801 INFO L129 PetriNetUnfolder]: 106/734 cut-off events. [2022-01-19 00:50:22,801 INFO L130 PetriNetUnfolder]: For 2925/2936 co-relation queries the response was YES. [2022-01-19 00:50:22,805 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2540 conditions, 734 events. 106/734 cut-off events. For 2925/2936 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4269 event pairs, 41 based on Foata normal form. 3/711 useless extension candidates. Maximal degree in co-relation 2460. Up to 170 conditions per place. [2022-01-19 00:50:22,807 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 80 selfloop transitions, 29 changer transitions 37/266 dead transitions. [2022-01-19 00:50:22,807 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 266 transitions, 2220 flow [2022-01-19 00:50:22,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 00:50:22,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 00:50:22,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3018 transitions. [2022-01-19 00:50:22,808 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7794421487603306 [2022-01-19 00:50:22,809 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3018 transitions. [2022-01-19 00:50:22,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3018 transitions. [2022-01-19 00:50:22,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:22,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3018 transitions. [2022-01-19 00:50:22,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.1818181818182) internal successors, (3018), 22 states have internal predecessors, (3018), 0 states have call successors, (0), 0 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 00:50:22,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 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 00:50:22,813 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 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 00:50:22,813 INFO L186 Difference]: Start difference. First operand has 280 places, 213 transitions, 1345 flow. Second operand 22 states and 3018 transitions. [2022-01-19 00:50:22,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 266 transitions, 2220 flow [2022-01-19 00:50:22,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 266 transitions, 2117 flow, removed 29 selfloop flow, removed 12 redundant places. [2022-01-19 00:50:22,848 INFO L242 Difference]: Finished difference. Result has 290 places, 212 transitions, 1378 flow [2022-01-19 00:50:22,848 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1283, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1378, PETRI_PLACES=290, PETRI_TRANSITIONS=212} [2022-01-19 00:50:22,849 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 131 predicate places. [2022-01-19 00:50:22,849 INFO L470 AbstractCegarLoop]: Abstraction has has 290 places, 212 transitions, 1378 flow [2022-01-19 00:50:22,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:22,849 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:22,849 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] [2022-01-19 00:50:22,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-19 00:50:22,849 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:22,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:22,849 INFO L85 PathProgramCache]: Analyzing trace with hash -103991529, now seen corresponding path program 9 times [2022-01-19 00:50:22,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:22,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803861890] [2022-01-19 00:50:22,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:22,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:22,921 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 00:50:22,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:22,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803861890] [2022-01-19 00:50:22,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803861890] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:22,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:22,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:22,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27573380] [2022-01-19 00:50:22,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:22,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:22,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:22,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:22,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:22,923 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:22,924 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 212 transitions, 1378 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:22,924 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:22,924 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:22,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:23,124 INFO L129 PetriNetUnfolder]: 90/657 cut-off events. [2022-01-19 00:50:23,125 INFO L130 PetriNetUnfolder]: For 2536/2545 co-relation queries the response was YES. [2022-01-19 00:50:23,128 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2234 conditions, 657 events. 90/657 cut-off events. For 2536/2545 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3569 event pairs, 40 based on Foata normal form. 3/635 useless extension candidates. Maximal degree in co-relation 2151. Up to 163 conditions per place. [2022-01-19 00:50:23,129 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 71 selfloop transitions, 17 changer transitions 34/242 dead transitions. [2022-01-19 00:50:23,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 242 transitions, 1906 flow [2022-01-19 00:50:23,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:50:23,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:50:23,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2470 transitions. [2022-01-19 00:50:23,145 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7796717171717171 [2022-01-19 00:50:23,145 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2470 transitions. [2022-01-19 00:50:23,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2470 transitions. [2022-01-19 00:50:23,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:23,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2470 transitions. [2022-01-19 00:50:23,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.22222222222223) internal successors, (2470), 18 states have internal predecessors, (2470), 0 states have call successors, (0), 0 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 00:50:23,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 00:50:23,149 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 00:50:23,149 INFO L186 Difference]: Start difference. First operand has 290 places, 212 transitions, 1378 flow. Second operand 18 states and 2470 transitions. [2022-01-19 00:50:23,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 242 transitions, 1906 flow [2022-01-19 00:50:23,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 242 transitions, 1776 flow, removed 40 selfloop flow, removed 17 redundant places. [2022-01-19 00:50:23,161 INFO L242 Difference]: Finished difference. Result has 283 places, 197 transitions, 1117 flow [2022-01-19 00:50:23,161 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1281, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1117, PETRI_PLACES=283, PETRI_TRANSITIONS=197} [2022-01-19 00:50:23,162 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 124 predicate places. [2022-01-19 00:50:23,162 INFO L470 AbstractCegarLoop]: Abstraction has has 283 places, 197 transitions, 1117 flow [2022-01-19 00:50:23,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:23,162 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:23,162 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] [2022-01-19 00:50:23,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-19 00:50:23,162 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:23,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:23,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1878967331, now seen corresponding path program 10 times [2022-01-19 00:50:23,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:23,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427032552] [2022-01-19 00:50:23,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:23,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:23,236 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 00:50:23,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:23,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427032552] [2022-01-19 00:50:23,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427032552] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:23,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:23,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:23,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750385842] [2022-01-19 00:50:23,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:23,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:23,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:23,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:23,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:23,238 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:23,238 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 197 transitions, 1117 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:23,238 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:23,238 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:23,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:23,473 INFO L129 PetriNetUnfolder]: 86/632 cut-off events. [2022-01-19 00:50:23,473 INFO L130 PetriNetUnfolder]: For 2092/2110 co-relation queries the response was YES. [2022-01-19 00:50:23,476 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2094 conditions, 632 events. 86/632 cut-off events. For 2092/2110 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3364 event pairs, 40 based on Foata normal form. 4/612 useless extension candidates. Maximal degree in co-relation 2019. Up to 157 conditions per place. [2022-01-19 00:50:23,477 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 63 selfloop transitions, 23 changer transitions 30/236 dead transitions. [2022-01-19 00:50:23,477 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 236 transitions, 1792 flow [2022-01-19 00:50:23,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:50:23,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:50:23,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2480 transitions. [2022-01-19 00:50:23,480 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7828282828282829 [2022-01-19 00:50:23,480 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2480 transitions. [2022-01-19 00:50:23,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2480 transitions. [2022-01-19 00:50:23,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:23,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2480 transitions. [2022-01-19 00:50:23,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.77777777777777) internal successors, (2480), 18 states have internal predecessors, (2480), 0 states have call successors, (0), 0 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 00:50:23,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 00:50:23,483 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 00:50:23,483 INFO L186 Difference]: Start difference. First operand has 283 places, 197 transitions, 1117 flow. Second operand 18 states and 2480 transitions. [2022-01-19 00:50:23,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 236 transitions, 1792 flow [2022-01-19 00:50:23,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 236 transitions, 1654 flow, removed 27 selfloop flow, removed 15 redundant places. [2022-01-19 00:50:23,494 INFO L242 Difference]: Finished difference. Result has 269 places, 200 transitions, 1152 flow [2022-01-19 00:50:23,494 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1152, PETRI_PLACES=269, PETRI_TRANSITIONS=200} [2022-01-19 00:50:23,494 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 110 predicate places. [2022-01-19 00:50:23,494 INFO L470 AbstractCegarLoop]: Abstraction has has 269 places, 200 transitions, 1152 flow [2022-01-19 00:50:23,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:23,494 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:23,495 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] [2022-01-19 00:50:23,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-19 00:50:23,495 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:23,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:23,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1313153469, now seen corresponding path program 11 times [2022-01-19 00:50:23,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:23,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579694041] [2022-01-19 00:50:23,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:23,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:23,561 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 00:50:23,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:23,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579694041] [2022-01-19 00:50:23,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579694041] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:23,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:23,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:23,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883785278] [2022-01-19 00:50:23,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:23,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:23,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:23,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:23,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:23,563 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:23,564 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 200 transitions, 1152 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:23,564 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:23,564 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:23,564 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:23,777 INFO L129 PetriNetUnfolder]: 80/606 cut-off events. [2022-01-19 00:50:23,777 INFO L130 PetriNetUnfolder]: For 1769/1778 co-relation queries the response was YES. [2022-01-19 00:50:23,780 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1934 conditions, 606 events. 80/606 cut-off events. For 1769/1778 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3114 event pairs, 41 based on Foata normal form. 2/584 useless extension candidates. Maximal degree in co-relation 1862. Up to 155 conditions per place. [2022-01-19 00:50:23,781 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 60 selfloop transitions, 15 changer transitions 29/224 dead transitions. [2022-01-19 00:50:23,781 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 224 transitions, 1592 flow [2022-01-19 00:50:23,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:50:23,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:50:23,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2473 transitions. [2022-01-19 00:50:23,783 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7806186868686869 [2022-01-19 00:50:23,783 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2473 transitions. [2022-01-19 00:50:23,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2473 transitions. [2022-01-19 00:50:23,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:23,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2473 transitions. [2022-01-19 00:50:23,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.38888888888889) internal successors, (2473), 18 states have internal predecessors, (2473), 0 states have call successors, (0), 0 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 00:50:23,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 00:50:23,786 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 00:50:23,787 INFO L186 Difference]: Start difference. First operand has 269 places, 200 transitions, 1152 flow. Second operand 18 states and 2473 transitions. [2022-01-19 00:50:23,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 224 transitions, 1592 flow [2022-01-19 00:50:23,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 224 transitions, 1499 flow, removed 23 selfloop flow, removed 8 redundant places. [2022-01-19 00:50:23,797 INFO L242 Difference]: Finished difference. Result has 277 places, 191 transitions, 1006 flow [2022-01-19 00:50:23,798 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1006, PETRI_PLACES=277, PETRI_TRANSITIONS=191} [2022-01-19 00:50:23,798 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 118 predicate places. [2022-01-19 00:50:23,798 INFO L470 AbstractCegarLoop]: Abstraction has has 277 places, 191 transitions, 1006 flow [2022-01-19 00:50:23,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:23,798 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:23,798 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] [2022-01-19 00:50:23,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-19 00:50:23,799 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:23,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:23,799 INFO L85 PathProgramCache]: Analyzing trace with hash -602577015, now seen corresponding path program 12 times [2022-01-19 00:50:23,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:23,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296796310] [2022-01-19 00:50:23,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:23,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:23,872 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 00:50:23,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:23,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296796310] [2022-01-19 00:50:23,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296796310] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:23,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:23,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:23,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468317784] [2022-01-19 00:50:23,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:23,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:23,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:23,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:23,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:23,875 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:23,876 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 191 transitions, 1006 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:23,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:23,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:23,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:24,091 INFO L129 PetriNetUnfolder]: 68/560 cut-off events. [2022-01-19 00:50:24,092 INFO L130 PetriNetUnfolder]: For 1427/1445 co-relation queries the response was YES. [2022-01-19 00:50:24,094 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1671 conditions, 560 events. 68/560 cut-off events. For 1427/1445 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2729 event pairs, 40 based on Foata normal form. 4/540 useless extension candidates. Maximal degree in co-relation 1597. Up to 145 conditions per place. [2022-01-19 00:50:24,096 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 51 selfloop transitions, 3 changer transitions 32/206 dead transitions. [2022-01-19 00:50:24,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 206 transitions, 1271 flow [2022-01-19 00:50:24,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 00:50:24,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 00:50:24,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2329 transitions. [2022-01-19 00:50:24,097 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7784090909090909 [2022-01-19 00:50:24,097 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2329 transitions. [2022-01-19 00:50:24,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2329 transitions. [2022-01-19 00:50:24,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:24,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2329 transitions. [2022-01-19 00:50:24,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.0) internal successors, (2329), 17 states have internal predecessors, (2329), 0 states have call successors, (0), 0 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 00:50:24,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:50:24,101 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:50:24,101 INFO L186 Difference]: Start difference. First operand has 277 places, 191 transitions, 1006 flow. Second operand 17 states and 2329 transitions. [2022-01-19 00:50:24,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 206 transitions, 1271 flow [2022-01-19 00:50:24,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 206 transitions, 1181 flow, removed 19 selfloop flow, removed 18 redundant places. [2022-01-19 00:50:24,109 INFO L242 Difference]: Finished difference. Result has 263 places, 171 transitions, 690 flow [2022-01-19 00:50:24,109 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=926, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=690, PETRI_PLACES=263, PETRI_TRANSITIONS=171} [2022-01-19 00:50:24,110 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 104 predicate places. [2022-01-19 00:50:24,110 INFO L470 AbstractCegarLoop]: Abstraction has has 263 places, 171 transitions, 690 flow [2022-01-19 00:50:24,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:24,110 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:24,110 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] [2022-01-19 00:50:24,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-19 00:50:24,110 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:24,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:24,111 INFO L85 PathProgramCache]: Analyzing trace with hash -97134579, now seen corresponding path program 13 times [2022-01-19 00:50:24,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:24,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286548181] [2022-01-19 00:50:24,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:24,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:24,191 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 00:50:24,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:24,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286548181] [2022-01-19 00:50:24,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286548181] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:24,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:24,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:24,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880946421] [2022-01-19 00:50:24,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:24,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:24,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:24,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:24,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:24,193 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:24,193 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 171 transitions, 690 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:24,194 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:24,194 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:24,194 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:24,447 INFO L129 PetriNetUnfolder]: 77/611 cut-off events. [2022-01-19 00:50:24,447 INFO L130 PetriNetUnfolder]: For 1367/1374 co-relation queries the response was YES. [2022-01-19 00:50:24,449 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1804 conditions, 611 events. 77/611 cut-off events. For 1367/1374 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3158 event pairs, 35 based on Foata normal form. 3/594 useless extension candidates. Maximal degree in co-relation 1738. Up to 128 conditions per place. [2022-01-19 00:50:24,451 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 56 selfloop transitions, 21 changer transitions 33/230 dead transitions. [2022-01-19 00:50:24,451 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 230 transitions, 1488 flow [2022-01-19 00:50:24,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 00:50:24,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 00:50:24,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3019 transitions. [2022-01-19 00:50:24,469 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7797004132231405 [2022-01-19 00:50:24,469 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3019 transitions. [2022-01-19 00:50:24,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3019 transitions. [2022-01-19 00:50:24,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:24,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3019 transitions. [2022-01-19 00:50:24,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.22727272727272) internal successors, (3019), 22 states have internal predecessors, (3019), 0 states have call successors, (0), 0 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 00:50:24,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 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 00:50:24,474 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 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 00:50:24,474 INFO L186 Difference]: Start difference. First operand has 263 places, 171 transitions, 690 flow. Second operand 22 states and 3019 transitions. [2022-01-19 00:50:24,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 230 transitions, 1488 flow [2022-01-19 00:50:24,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 230 transitions, 1341 flow, removed 32 selfloop flow, removed 19 redundant places. [2022-01-19 00:50:24,481 INFO L242 Difference]: Finished difference. Result has 250 places, 183 transitions, 848 flow [2022-01-19 00:50:24,481 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=848, PETRI_PLACES=250, PETRI_TRANSITIONS=183} [2022-01-19 00:50:24,481 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 91 predicate places. [2022-01-19 00:50:24,481 INFO L470 AbstractCegarLoop]: Abstraction has has 250 places, 183 transitions, 848 flow [2022-01-19 00:50:24,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:24,482 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:24,482 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] [2022-01-19 00:50:24,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-19 00:50:24,482 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:24,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:24,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1585175349, now seen corresponding path program 14 times [2022-01-19 00:50:24,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:24,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393131558] [2022-01-19 00:50:24,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:24,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:24,554 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 00:50:24,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:24,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393131558] [2022-01-19 00:50:24,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393131558] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:24,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:24,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:24,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613064745] [2022-01-19 00:50:24,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:24,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:24,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:24,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:24,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:24,556 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:24,556 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 183 transitions, 848 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:24,556 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:24,556 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:24,557 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:24,784 INFO L129 PetriNetUnfolder]: 79/605 cut-off events. [2022-01-19 00:50:24,784 INFO L130 PetriNetUnfolder]: For 1559/1566 co-relation queries the response was YES. [2022-01-19 00:50:24,787 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1888 conditions, 605 events. 79/605 cut-off events. For 1559/1566 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3123 event pairs, 35 based on Foata normal form. 2/585 useless extension candidates. Maximal degree in co-relation 1823. Up to 134 conditions per place. [2022-01-19 00:50:24,788 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 54 selfloop transitions, 27 changer transitions 28/229 dead transitions. [2022-01-19 00:50:24,788 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 229 transitions, 1534 flow [2022-01-19 00:50:24,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 00:50:24,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 00:50:24,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2341 transitions. [2022-01-19 00:50:24,793 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7824197860962567 [2022-01-19 00:50:24,793 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2341 transitions. [2022-01-19 00:50:24,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2341 transitions. [2022-01-19 00:50:24,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:24,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2341 transitions. [2022-01-19 00:50:24,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.7058823529412) internal successors, (2341), 17 states have internal predecessors, (2341), 0 states have call successors, (0), 0 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 00:50:24,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:50:24,796 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:50:24,796 INFO L186 Difference]: Start difference. First operand has 250 places, 183 transitions, 848 flow. Second operand 17 states and 2341 transitions. [2022-01-19 00:50:24,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 229 transitions, 1534 flow [2022-01-19 00:50:24,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 229 transitions, 1451 flow, removed 35 selfloop flow, removed 11 redundant places. [2022-01-19 00:50:24,804 INFO L242 Difference]: Finished difference. Result has 251 places, 191 transitions, 1002 flow [2022-01-19 00:50:24,805 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1002, PETRI_PLACES=251, PETRI_TRANSITIONS=191} [2022-01-19 00:50:24,805 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 92 predicate places. [2022-01-19 00:50:24,805 INFO L470 AbstractCegarLoop]: Abstraction has has 251 places, 191 transitions, 1002 flow [2022-01-19 00:50:24,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:24,805 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:24,805 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] [2022-01-19 00:50:24,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-19 00:50:24,805 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:24,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:24,806 INFO L85 PathProgramCache]: Analyzing trace with hash -941495501, now seen corresponding path program 15 times [2022-01-19 00:50:24,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:24,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983835111] [2022-01-19 00:50:24,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:24,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:24,876 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 00:50:24,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:24,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983835111] [2022-01-19 00:50:24,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983835111] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:24,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:24,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:24,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388737019] [2022-01-19 00:50:24,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:24,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:24,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:24,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:24,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:24,878 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:24,878 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 191 transitions, 1002 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:24,879 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:24,879 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:24,879 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:25,092 INFO L129 PetriNetUnfolder]: 77/615 cut-off events. [2022-01-19 00:50:25,092 INFO L130 PetriNetUnfolder]: For 1691/1698 co-relation queries the response was YES. [2022-01-19 00:50:25,095 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1934 conditions, 615 events. 77/615 cut-off events. For 1691/1698 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3221 event pairs, 34 based on Foata normal form. 3/597 useless extension candidates. Maximal degree in co-relation 1869. Up to 135 conditions per place. [2022-01-19 00:50:25,096 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 56 selfloop transitions, 25 changer transitions 31/232 dead transitions. [2022-01-19 00:50:25,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 232 transitions, 1623 flow [2022-01-19 00:50:25,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 00:50:25,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 00:50:25,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2210 transitions. [2022-01-19 00:50:25,097 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7848011363636364 [2022-01-19 00:50:25,097 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2210 transitions. [2022-01-19 00:50:25,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2210 transitions. [2022-01-19 00:50:25,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:25,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2210 transitions. [2022-01-19 00:50:25,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 138.125) internal successors, (2210), 16 states have internal predecessors, (2210), 0 states have call successors, (0), 0 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 00:50:25,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 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 00:50:25,100 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 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 00:50:25,100 INFO L186 Difference]: Start difference. First operand has 251 places, 191 transitions, 1002 flow. Second operand 16 states and 2210 transitions. [2022-01-19 00:50:25,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 232 transitions, 1623 flow [2022-01-19 00:50:25,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 232 transitions, 1525 flow, removed 22 selfloop flow, removed 9 redundant places. [2022-01-19 00:50:25,109 INFO L242 Difference]: Finished difference. Result has 257 places, 195 transitions, 1053 flow [2022-01-19 00:50:25,109 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1053, PETRI_PLACES=257, PETRI_TRANSITIONS=195} [2022-01-19 00:50:25,109 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 98 predicate places. [2022-01-19 00:50:25,109 INFO L470 AbstractCegarLoop]: Abstraction has has 257 places, 195 transitions, 1053 flow [2022-01-19 00:50:25,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:25,110 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:25,110 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] [2022-01-19 00:50:25,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-19 00:50:25,110 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:25,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:25,110 INFO L85 PathProgramCache]: Analyzing trace with hash -2079824505, now seen corresponding path program 16 times [2022-01-19 00:50:25,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:25,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165039725] [2022-01-19 00:50:25,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:25,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:25,182 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 00:50:25,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:25,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165039725] [2022-01-19 00:50:25,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165039725] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:25,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:25,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:25,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402628747] [2022-01-19 00:50:25,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:25,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:25,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:25,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:25,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:25,184 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:25,184 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 195 transitions, 1053 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:25,184 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:25,184 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:25,185 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:25,424 INFO L129 PetriNetUnfolder]: 75/609 cut-off events. [2022-01-19 00:50:25,424 INFO L130 PetriNetUnfolder]: For 1833/1838 co-relation queries the response was YES. [2022-01-19 00:50:25,427 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1926 conditions, 609 events. 75/609 cut-off events. For 1833/1838 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3168 event pairs, 32 based on Foata normal form. 1/588 useless extension candidates. Maximal degree in co-relation 1859. Up to 127 conditions per place. [2022-01-19 00:50:25,428 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 61 selfloop transitions, 25 changer transitions 33/239 dead transitions. [2022-01-19 00:50:25,428 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 239 transitions, 1801 flow [2022-01-19 00:50:25,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 00:50:25,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 00:50:25,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2882 transitions. [2022-01-19 00:50:25,429 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7797619047619048 [2022-01-19 00:50:25,429 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2882 transitions. [2022-01-19 00:50:25,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2882 transitions. [2022-01-19 00:50:25,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:25,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2882 transitions. [2022-01-19 00:50:25,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 137.23809523809524) internal successors, (2882), 21 states have internal predecessors, (2882), 0 states have call successors, (0), 0 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 00:50:25,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 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 00:50:25,433 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 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 00:50:25,433 INFO L186 Difference]: Start difference. First operand has 257 places, 195 transitions, 1053 flow. Second operand 21 states and 2882 transitions. [2022-01-19 00:50:25,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 239 transitions, 1801 flow [2022-01-19 00:50:25,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 239 transitions, 1700 flow, removed 24 selfloop flow, removed 8 redundant places. [2022-01-19 00:50:25,443 INFO L242 Difference]: Finished difference. Result has 275 places, 197 transitions, 1135 flow [2022-01-19 00:50:25,443 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1135, PETRI_PLACES=275, PETRI_TRANSITIONS=197} [2022-01-19 00:50:25,443 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 116 predicate places. [2022-01-19 00:50:25,443 INFO L470 AbstractCegarLoop]: Abstraction has has 275 places, 197 transitions, 1135 flow [2022-01-19 00:50:25,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:25,444 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:25,444 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] [2022-01-19 00:50:25,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-19 00:50:25,444 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:25,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:25,444 INFO L85 PathProgramCache]: Analyzing trace with hash 155303969, now seen corresponding path program 17 times [2022-01-19 00:50:25,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:25,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209308731] [2022-01-19 00:50:25,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:25,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:25,513 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 00:50:25,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:25,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209308731] [2022-01-19 00:50:25,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209308731] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:25,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:25,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:25,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371387919] [2022-01-19 00:50:25,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:25,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:25,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:25,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:25,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:25,515 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:25,516 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 197 transitions, 1135 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:25,516 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:25,516 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:25,516 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:25,715 INFO L129 PetriNetUnfolder]: 65/556 cut-off events. [2022-01-19 00:50:25,716 INFO L130 PetriNetUnfolder]: For 1694/1701 co-relation queries the response was YES. [2022-01-19 00:50:25,718 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1742 conditions, 556 events. 65/556 cut-off events. For 1694/1701 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2700 event pairs, 32 based on Foata normal form. 3/538 useless extension candidates. Maximal degree in co-relation 1668. Up to 127 conditions per place. [2022-01-19 00:50:25,720 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 54 selfloop transitions, 13 changer transitions 33/220 dead transitions. [2022-01-19 00:50:25,720 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 220 transitions, 1535 flow [2022-01-19 00:50:25,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:50:25,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:50:25,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2469 transitions. [2022-01-19 00:50:25,721 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7793560606060606 [2022-01-19 00:50:25,721 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2469 transitions. [2022-01-19 00:50:25,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2469 transitions. [2022-01-19 00:50:25,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:25,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2469 transitions. [2022-01-19 00:50:25,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.16666666666666) internal successors, (2469), 18 states have internal predecessors, (2469), 0 states have call successors, (0), 0 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 00:50:25,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 00:50:25,725 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 00:50:25,725 INFO L186 Difference]: Start difference. First operand has 275 places, 197 transitions, 1135 flow. Second operand 18 states and 2469 transitions. [2022-01-19 00:50:25,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 220 transitions, 1535 flow [2022-01-19 00:50:25,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 220 transitions, 1420 flow, removed 33 selfloop flow, removed 16 redundant places. [2022-01-19 00:50:25,734 INFO L242 Difference]: Finished difference. Result has 270 places, 182 transitions, 900 flow [2022-01-19 00:50:25,734 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=900, PETRI_PLACES=270, PETRI_TRANSITIONS=182} [2022-01-19 00:50:25,734 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 111 predicate places. [2022-01-19 00:50:25,734 INFO L470 AbstractCegarLoop]: Abstraction has has 270 places, 182 transitions, 900 flow [2022-01-19 00:50:25,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:25,734 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:25,735 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] [2022-01-19 00:50:25,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-19 00:50:25,735 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:25,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:25,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1872184799, now seen corresponding path program 18 times [2022-01-19 00:50:25,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:25,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264537223] [2022-01-19 00:50:25,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:25,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:25,800 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 00:50:25,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:25,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264537223] [2022-01-19 00:50:25,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264537223] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:25,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:25,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:25,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742424814] [2022-01-19 00:50:25,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:25,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:25,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:25,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:25,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:25,802 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:25,803 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 182 transitions, 900 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:25,803 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:25,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:25,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:26,027 INFO L129 PetriNetUnfolder]: 61/550 cut-off events. [2022-01-19 00:50:26,027 INFO L130 PetriNetUnfolder]: For 1454/1461 co-relation queries the response was YES. [2022-01-19 00:50:26,029 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1608 conditions, 550 events. 61/550 cut-off events. For 1454/1461 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2685 event pairs, 34 based on Foata normal form. 2/530 useless extension candidates. Maximal degree in co-relation 1539. Up to 125 conditions per place. [2022-01-19 00:50:26,030 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 45 selfloop transitions, 12 changer transitions 32/209 dead transitions. [2022-01-19 00:50:26,031 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 209 transitions, 1300 flow [2022-01-19 00:50:26,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:50:26,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:50:26,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2471 transitions. [2022-01-19 00:50:26,032 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7799873737373737 [2022-01-19 00:50:26,032 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2471 transitions. [2022-01-19 00:50:26,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2471 transitions. [2022-01-19 00:50:26,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:26,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2471 transitions. [2022-01-19 00:50:26,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.27777777777777) internal successors, (2471), 18 states have internal predecessors, (2471), 0 states have call successors, (0), 0 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 00:50:26,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 00:50:26,035 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 00:50:26,035 INFO L186 Difference]: Start difference. First operand has 270 places, 182 transitions, 900 flow. Second operand 18 states and 2471 transitions. [2022-01-19 00:50:26,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 209 transitions, 1300 flow [2022-01-19 00:50:26,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 209 transitions, 1194 flow, removed 17 selfloop flow, removed 19 redundant places. [2022-01-19 00:50:26,043 INFO L242 Difference]: Finished difference. Result has 253 places, 174 transitions, 758 flow [2022-01-19 00:50:26,043 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=758, PETRI_PLACES=253, PETRI_TRANSITIONS=174} [2022-01-19 00:50:26,043 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 94 predicate places. [2022-01-19 00:50:26,043 INFO L470 AbstractCegarLoop]: Abstraction has has 253 places, 174 transitions, 758 flow [2022-01-19 00:50:26,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:26,043 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:26,043 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] [2022-01-19 00:50:26,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-19 00:50:26,044 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:26,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:26,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1588571595, now seen corresponding path program 19 times [2022-01-19 00:50:26,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:26,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286553156] [2022-01-19 00:50:26,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:26,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:26,120 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 00:50:26,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:26,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286553156] [2022-01-19 00:50:26,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286553156] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:26,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:26,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:26,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410052314] [2022-01-19 00:50:26,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:26,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:26,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:26,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:26,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:26,122 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:26,123 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 174 transitions, 758 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:26,123 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:26,123 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:26,123 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:26,314 INFO L129 PetriNetUnfolder]: 57/533 cut-off events. [2022-01-19 00:50:26,314 INFO L130 PetriNetUnfolder]: For 1071/1076 co-relation queries the response was YES. [2022-01-19 00:50:26,316 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1491 conditions, 533 events. 57/533 cut-off events. For 1071/1076 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2547 event pairs, 32 based on Foata normal form. 1/512 useless extension candidates. Maximal degree in co-relation 1427. Up to 126 conditions per place. [2022-01-19 00:50:26,318 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 40 selfloop transitions, 17 changer transitions 32/209 dead transitions. [2022-01-19 00:50:26,318 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 209 transitions, 1272 flow [2022-01-19 00:50:26,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 00:50:26,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 00:50:26,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2339 transitions. [2022-01-19 00:50:26,328 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7817513368983957 [2022-01-19 00:50:26,328 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2339 transitions. [2022-01-19 00:50:26,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2339 transitions. [2022-01-19 00:50:26,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:26,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2339 transitions. [2022-01-19 00:50:26,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.58823529411765) internal successors, (2339), 17 states have internal predecessors, (2339), 0 states have call successors, (0), 0 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 00:50:26,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:50:26,332 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:50:26,332 INFO L186 Difference]: Start difference. First operand has 253 places, 174 transitions, 758 flow. Second operand 17 states and 2339 transitions. [2022-01-19 00:50:26,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 209 transitions, 1272 flow [2022-01-19 00:50:26,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 209 transitions, 1171 flow, removed 25 selfloop flow, removed 15 redundant places. [2022-01-19 00:50:26,338 INFO L242 Difference]: Finished difference. Result has 245 places, 175 transitions, 778 flow [2022-01-19 00:50:26,339 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=778, PETRI_PLACES=245, PETRI_TRANSITIONS=175} [2022-01-19 00:50:26,339 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 86 predicate places. [2022-01-19 00:50:26,339 INFO L470 AbstractCegarLoop]: Abstraction has has 245 places, 175 transitions, 778 flow [2022-01-19 00:50:26,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:26,339 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:26,339 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] [2022-01-19 00:50:26,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-19 00:50:26,339 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:26,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:26,340 INFO L85 PathProgramCache]: Analyzing trace with hash -369122677, now seen corresponding path program 20 times [2022-01-19 00:50:26,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:26,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901477866] [2022-01-19 00:50:26,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:26,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:26,436 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 00:50:26,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:26,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901477866] [2022-01-19 00:50:26,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901477866] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:26,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:26,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:50:26,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108038294] [2022-01-19 00:50:26,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:26,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:50:26,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:26,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:50:26,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:50:26,438 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 00:50:26,438 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 175 transitions, 778 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:26,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:26,438 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 00:50:26,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:26,645 INFO L129 PetriNetUnfolder]: 46/448 cut-off events. [2022-01-19 00:50:26,645 INFO L130 PetriNetUnfolder]: For 740/745 co-relation queries the response was YES. [2022-01-19 00:50:26,647 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1191 conditions, 448 events. 46/448 cut-off events. For 740/745 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1893 event pairs, 31 based on Foata normal form. 1/428 useless extension candidates. Maximal degree in co-relation 1129. Up to 103 conditions per place. [2022-01-19 00:50:26,647 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 29 selfloop transitions, 0 changer transitions 43/186 dead transitions. [2022-01-19 00:50:26,648 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 186 transitions, 950 flow [2022-01-19 00:50:26,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:50:26,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:50:26,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2459 transitions. [2022-01-19 00:50:26,649 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7761994949494949 [2022-01-19 00:50:26,649 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2459 transitions. [2022-01-19 00:50:26,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2459 transitions. [2022-01-19 00:50:26,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:26,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2459 transitions. [2022-01-19 00:50:26,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.61111111111111) internal successors, (2459), 18 states have internal predecessors, (2459), 0 states have call successors, (0), 0 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 00:50:26,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 00:50:26,652 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 00:50:26,652 INFO L186 Difference]: Start difference. First operand has 245 places, 175 transitions, 778 flow. Second operand 18 states and 2459 transitions. [2022-01-19 00:50:26,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 186 transitions, 950 flow [2022-01-19 00:50:26,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 186 transitions, 864 flow, removed 23 selfloop flow, removed 13 redundant places. [2022-01-19 00:50:26,657 INFO L242 Difference]: Finished difference. Result has 244 places, 143 transitions, 402 flow [2022-01-19 00:50:26,657 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=402, PETRI_PLACES=244, PETRI_TRANSITIONS=143} [2022-01-19 00:50:26,658 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 85 predicate places. [2022-01-19 00:50:26,658 INFO L470 AbstractCegarLoop]: Abstraction has has 244 places, 143 transitions, 402 flow [2022-01-19 00:50:26,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 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 00:50:26,658 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:26,658 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:50:26,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-19 00:50:26,658 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:26,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:26,658 INFO L85 PathProgramCache]: Analyzing trace with hash -214406091, now seen corresponding path program 1 times [2022-01-19 00:50:26,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:26,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798758869] [2022-01-19 00:50:26,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:26,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:27,098 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 00:50:27,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:27,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798758869] [2022-01-19 00:50:27,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798758869] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:27,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:27,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:50:27,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275392236] [2022-01-19 00:50:27,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:27,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:50:27,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:27,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:50:27,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:50:27,101 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:50:27,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 143 transitions, 402 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:50:27,102 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:27,102 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:50:27,102 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:29,327 INFO L129 PetriNetUnfolder]: 367/1337 cut-off events. [2022-01-19 00:50:29,327 INFO L130 PetriNetUnfolder]: For 1775/1777 co-relation queries the response was YES. [2022-01-19 00:50:29,333 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3245 conditions, 1337 events. 367/1337 cut-off events. For 1775/1777 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 7681 event pairs, 67 based on Foata normal form. 1/1307 useless extension candidates. Maximal degree in co-relation 3190. Up to 126 conditions per place. [2022-01-19 00:50:29,336 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 192 selfloop transitions, 33 changer transitions 49/361 dead transitions. [2022-01-19 00:50:29,336 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 361 transitions, 1995 flow [2022-01-19 00:50:29,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 00:50:29,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 00:50:29,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 4974 transitions. [2022-01-19 00:50:29,346 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6423037190082644 [2022-01-19 00:50:29,346 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 4974 transitions. [2022-01-19 00:50:29,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 4974 transitions. [2022-01-19 00:50:29,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:29,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 4974 transitions. [2022-01-19 00:50:29,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 113.04545454545455) internal successors, (4974), 44 states have internal predecessors, (4974), 0 states have call successors, (0), 0 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 00:50:29,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 176.0) internal successors, (7920), 45 states have internal predecessors, (7920), 0 states have call successors, (0), 0 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 00:50:29,353 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 176.0) internal successors, (7920), 45 states have internal predecessors, (7920), 0 states have call successors, (0), 0 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 00:50:29,353 INFO L186 Difference]: Start difference. First operand has 244 places, 143 transitions, 402 flow. Second operand 44 states and 4974 transitions. [2022-01-19 00:50:29,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 361 transitions, 1995 flow [2022-01-19 00:50:29,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 361 transitions, 1819 flow, removed 87 selfloop flow, removed 11 redundant places. [2022-01-19 00:50:29,360 INFO L242 Difference]: Finished difference. Result has 265 places, 166 transitions, 709 flow [2022-01-19 00:50:29,360 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=709, PETRI_PLACES=265, PETRI_TRANSITIONS=166} [2022-01-19 00:50:29,360 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 106 predicate places. [2022-01-19 00:50:29,360 INFO L470 AbstractCegarLoop]: Abstraction has has 265 places, 166 transitions, 709 flow [2022-01-19 00:50:29,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:50:29,361 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:29,361 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:50:29,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-19 00:50:29,361 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:29,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:29,361 INFO L85 PathProgramCache]: Analyzing trace with hash 444470777, now seen corresponding path program 2 times [2022-01-19 00:50:29,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:29,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567772497] [2022-01-19 00:50:29,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:29,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:29,758 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 00:50:29,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:29,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567772497] [2022-01-19 00:50:29,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567772497] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:29,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:29,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:50:29,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465222019] [2022-01-19 00:50:29,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:29,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:50:29,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:29,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:50:29,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:50:29,760 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:50:29,761 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 166 transitions, 709 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:50:29,762 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:29,762 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:50:29,762 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:32,320 INFO L129 PetriNetUnfolder]: 812/2783 cut-off events. [2022-01-19 00:50:32,321 INFO L130 PetriNetUnfolder]: For 11971/11973 co-relation queries the response was YES. [2022-01-19 00:50:32,338 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8930 conditions, 2783 events. 812/2783 cut-off events. For 11971/11973 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 21223 event pairs, 139 based on Foata normal form. 1/2725 useless extension candidates. Maximal degree in co-relation 8851. Up to 493 conditions per place. [2022-01-19 00:50:32,345 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 283 selfloop transitions, 32 changer transitions 39/441 dead transitions. [2022-01-19 00:50:32,345 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 441 transitions, 3132 flow [2022-01-19 00:50:32,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 00:50:32,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 00:50:32,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4065 transitions. [2022-01-19 00:50:32,347 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6599025974025974 [2022-01-19 00:50:32,347 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4065 transitions. [2022-01-19 00:50:32,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4065 transitions. [2022-01-19 00:50:32,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:32,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4065 transitions. [2022-01-19 00:50:32,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 116.14285714285714) internal successors, (4065), 35 states have internal predecessors, (4065), 0 states have call successors, (0), 0 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 00:50:32,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:50:32,353 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:50:32,353 INFO L186 Difference]: Start difference. First operand has 265 places, 166 transitions, 709 flow. Second operand 35 states and 4065 transitions. [2022-01-19 00:50:32,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 441 transitions, 3132 flow [2022-01-19 00:50:32,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 441 transitions, 2647 flow, removed 215 selfloop flow, removed 27 redundant places. [2022-01-19 00:50:32,377 INFO L242 Difference]: Finished difference. Result has 278 places, 197 transitions, 1037 flow [2022-01-19 00:50:32,377 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1037, PETRI_PLACES=278, PETRI_TRANSITIONS=197} [2022-01-19 00:50:32,377 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 119 predicate places. [2022-01-19 00:50:32,377 INFO L470 AbstractCegarLoop]: Abstraction has has 278 places, 197 transitions, 1037 flow [2022-01-19 00:50:32,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:50:32,378 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:32,378 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:50:32,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-19 00:50:32,378 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:32,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:32,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1628285391, now seen corresponding path program 3 times [2022-01-19 00:50:32,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:32,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525722768] [2022-01-19 00:50:32,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:32,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:32,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:32,745 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 00:50:32,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:32,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525722768] [2022-01-19 00:50:32,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525722768] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:32,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:32,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:50:32,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529466269] [2022-01-19 00:50:32,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:32,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:50:32,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:32,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:50:32,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:50:32,748 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:50:32,749 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 197 transitions, 1037 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:50:32,749 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:32,749 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:50:32,749 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:34,918 INFO L129 PetriNetUnfolder]: 840/2945 cut-off events. [2022-01-19 00:50:34,918 INFO L130 PetriNetUnfolder]: For 11889/11894 co-relation queries the response was YES. [2022-01-19 00:50:34,940 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9917 conditions, 2945 events. 840/2945 cut-off events. For 11889/11894 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 22734 event pairs, 93 based on Foata normal form. 1/2858 useless extension candidates. Maximal degree in co-relation 9829. Up to 364 conditions per place. [2022-01-19 00:50:34,948 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 209 selfloop transitions, 66 changer transitions 40/402 dead transitions. [2022-01-19 00:50:34,948 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 402 transitions, 3045 flow [2022-01-19 00:50:34,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 00:50:34,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 00:50:34,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3991 transitions. [2022-01-19 00:50:34,950 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6478896103896103 [2022-01-19 00:50:34,950 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3991 transitions. [2022-01-19 00:50:34,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3991 transitions. [2022-01-19 00:50:34,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:34,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3991 transitions. [2022-01-19 00:50:34,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.02857142857142) internal successors, (3991), 35 states have internal predecessors, (3991), 0 states have call successors, (0), 0 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 00:50:34,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:50:34,956 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:50:34,956 INFO L186 Difference]: Start difference. First operand has 278 places, 197 transitions, 1037 flow. Second operand 35 states and 3991 transitions. [2022-01-19 00:50:34,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 402 transitions, 3045 flow [2022-01-19 00:50:34,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 402 transitions, 2763 flow, removed 140 selfloop flow, removed 16 redundant places. [2022-01-19 00:50:34,989 INFO L242 Difference]: Finished difference. Result has 305 places, 219 transitions, 1311 flow [2022-01-19 00:50:34,990 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=873, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1311, PETRI_PLACES=305, PETRI_TRANSITIONS=219} [2022-01-19 00:50:34,990 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 146 predicate places. [2022-01-19 00:50:34,990 INFO L470 AbstractCegarLoop]: Abstraction has has 305 places, 219 transitions, 1311 flow [2022-01-19 00:50:34,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:50:34,991 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:34,991 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:50:34,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-19 00:50:34,991 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:34,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:34,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1607873181, now seen corresponding path program 4 times [2022-01-19 00:50:34,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:34,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045895533] [2022-01-19 00:50:34,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:34,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:35,368 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 00:50:35,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:35,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045895533] [2022-01-19 00:50:35,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045895533] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:35,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:35,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:50:35,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680467040] [2022-01-19 00:50:35,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:35,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:50:35,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:35,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:50:35,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:50:35,371 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:50:35,372 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 219 transitions, 1311 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:50:35,372 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:35,372 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:50:35,372 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:39,401 INFO L129 PetriNetUnfolder]: 883/3117 cut-off events. [2022-01-19 00:50:39,401 INFO L130 PetriNetUnfolder]: For 14778/14784 co-relation queries the response was YES. [2022-01-19 00:50:39,418 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11302 conditions, 3117 events. 883/3117 cut-off events. For 14778/14784 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 24389 event pairs, 91 based on Foata normal form. 3/3066 useless extension candidates. Maximal degree in co-relation 11205. Up to 309 conditions per place. [2022-01-19 00:50:39,425 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 361 selfloop transitions, 43 changer transitions 124/615 dead transitions. [2022-01-19 00:50:39,425 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 615 transitions, 5729 flow [2022-01-19 00:50:39,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-19 00:50:39,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2022-01-19 00:50:39,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 7313 transitions. [2022-01-19 00:50:39,428 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6392482517482517 [2022-01-19 00:50:39,428 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 7313 transitions. [2022-01-19 00:50:39,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 7313 transitions. [2022-01-19 00:50:39,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:39,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 7313 transitions. [2022-01-19 00:50:39,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 112.50769230769231) internal successors, (7313), 65 states have internal predecessors, (7313), 0 states have call successors, (0), 0 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 00:50:39,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 176.0) internal successors, (11616), 66 states have internal predecessors, (11616), 0 states have call successors, (0), 0 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 00:50:39,440 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 176.0) internal successors, (11616), 66 states have internal predecessors, (11616), 0 states have call successors, (0), 0 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 00:50:39,440 INFO L186 Difference]: Start difference. First operand has 305 places, 219 transitions, 1311 flow. Second operand 65 states and 7313 transitions. [2022-01-19 00:50:39,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 615 transitions, 5729 flow [2022-01-19 00:50:39,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 615 transitions, 4989 flow, removed 118 selfloop flow, removed 20 redundant places. [2022-01-19 00:50:39,481 INFO L242 Difference]: Finished difference. Result has 387 places, 219 transitions, 1298 flow [2022-01-19 00:50:39,482 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=1298, PETRI_PLACES=387, PETRI_TRANSITIONS=219} [2022-01-19 00:50:39,482 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 228 predicate places. [2022-01-19 00:50:39,482 INFO L470 AbstractCegarLoop]: Abstraction has has 387 places, 219 transitions, 1298 flow [2022-01-19 00:50:39,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:50:39,482 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:39,482 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:50:39,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-19 00:50:39,483 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:39,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:39,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1990567509, now seen corresponding path program 5 times [2022-01-19 00:50:39,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:39,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124782786] [2022-01-19 00:50:39,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:39,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:39,854 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 00:50:39,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:39,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124782786] [2022-01-19 00:50:39,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124782786] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:39,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:39,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:50:39,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667807906] [2022-01-19 00:50:39,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:39,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:50:39,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:39,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:50:39,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:50:39,856 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:50:39,857 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 219 transitions, 1298 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:50:39,857 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:39,857 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:50:39,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:42,695 INFO L129 PetriNetUnfolder]: 997/3471 cut-off events. [2022-01-19 00:50:42,695 INFO L130 PetriNetUnfolder]: For 28322/28327 co-relation queries the response was YES. [2022-01-19 00:50:42,723 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14655 conditions, 3471 events. 997/3471 cut-off events. For 28322/28327 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 28326 event pairs, 211 based on Foata normal form. 3/3398 useless extension candidates. Maximal degree in co-relation 14518. Up to 591 conditions per place. [2022-01-19 00:50:42,732 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 329 selfloop transitions, 34 changer transitions 39/489 dead transitions. [2022-01-19 00:50:42,732 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 489 transitions, 4671 flow [2022-01-19 00:50:42,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 00:50:42,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 00:50:42,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4068 transitions. [2022-01-19 00:50:42,735 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6603896103896104 [2022-01-19 00:50:42,735 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4068 transitions. [2022-01-19 00:50:42,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4068 transitions. [2022-01-19 00:50:42,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:42,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4068 transitions. [2022-01-19 00:50:42,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 116.22857142857143) internal successors, (4068), 35 states have internal predecessors, (4068), 0 states have call successors, (0), 0 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 00:50:42,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:50:42,741 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:50:42,741 INFO L186 Difference]: Start difference. First operand has 387 places, 219 transitions, 1298 flow. Second operand 35 states and 4068 transitions. [2022-01-19 00:50:42,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 489 transitions, 4671 flow [2022-01-19 00:50:42,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 489 transitions, 3888 flow, removed 265 selfloop flow, removed 60 redundant places. [2022-01-19 00:50:42,808 INFO L242 Difference]: Finished difference. Result has 338 places, 244 transitions, 1596 flow [2022-01-19 00:50:42,808 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1596, PETRI_PLACES=338, PETRI_TRANSITIONS=244} [2022-01-19 00:50:42,809 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 179 predicate places. [2022-01-19 00:50:42,809 INFO L470 AbstractCegarLoop]: Abstraction has has 338 places, 244 transitions, 1596 flow [2022-01-19 00:50:42,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:50:42,809 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:42,809 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:50:42,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-19 00:50:42,809 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:42,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:42,810 INFO L85 PathProgramCache]: Analyzing trace with hash 603582109, now seen corresponding path program 6 times [2022-01-19 00:50:42,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:42,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341544641] [2022-01-19 00:50:42,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:42,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:43,263 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 00:50:43,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:43,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341544641] [2022-01-19 00:50:43,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341544641] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:43,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:43,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:50:43,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711105182] [2022-01-19 00:50:43,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:43,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:50:43,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:43,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:50:43,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:50:43,265 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:50:43,266 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 244 transitions, 1596 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:50:43,266 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:43,266 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:50:43,266 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:45,817 INFO L129 PetriNetUnfolder]: 1088/3774 cut-off events. [2022-01-19 00:50:45,817 INFO L130 PetriNetUnfolder]: For 29016/29021 co-relation queries the response was YES. [2022-01-19 00:50:45,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15394 conditions, 3774 events. 1088/3774 cut-off events. For 29016/29021 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 31277 event pairs, 150 based on Foata normal form. 1/3643 useless extension candidates. Maximal degree in co-relation 15277. Up to 677 conditions per place. [2022-01-19 00:50:45,851 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 269 selfloop transitions, 60 changer transitions 44/460 dead transitions. [2022-01-19 00:50:45,851 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 460 transitions, 4453 flow [2022-01-19 00:50:45,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 00:50:45,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 00:50:45,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4007 transitions. [2022-01-19 00:50:45,853 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.650487012987013 [2022-01-19 00:50:45,853 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4007 transitions. [2022-01-19 00:50:45,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4007 transitions. [2022-01-19 00:50:45,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:45,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4007 transitions. [2022-01-19 00:50:45,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.48571428571428) internal successors, (4007), 35 states have internal predecessors, (4007), 0 states have call successors, (0), 0 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 00:50:45,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:50:45,859 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:50:45,859 INFO L186 Difference]: Start difference. First operand has 338 places, 244 transitions, 1596 flow. Second operand 35 states and 4007 transitions. [2022-01-19 00:50:45,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 460 transitions, 4453 flow [2022-01-19 00:50:45,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 460 transitions, 4099 flow, removed 155 selfloop flow, removed 19 redundant places. [2022-01-19 00:50:45,920 INFO L242 Difference]: Finished difference. Result has 363 places, 269 transitions, 1946 flow [2022-01-19 00:50:45,920 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1946, PETRI_PLACES=363, PETRI_TRANSITIONS=269} [2022-01-19 00:50:45,920 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 204 predicate places. [2022-01-19 00:50:45,920 INFO L470 AbstractCegarLoop]: Abstraction has has 363 places, 269 transitions, 1946 flow [2022-01-19 00:50:45,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:50:45,921 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:45,921 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:50:45,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-19 00:50:45,921 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:45,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:45,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1760046429, now seen corresponding path program 7 times [2022-01-19 00:50:45,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:45,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235026308] [2022-01-19 00:50:45,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:45,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:46,299 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 00:50:46,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:46,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235026308] [2022-01-19 00:50:46,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235026308] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:46,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:46,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:50:46,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609015066] [2022-01-19 00:50:46,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:46,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:50:46,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:46,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:50:46,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:50:46,301 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:50:46,302 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 269 transitions, 1946 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:50:46,302 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:46,302 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:50:46,302 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:48,865 INFO L129 PetriNetUnfolder]: 1172/3935 cut-off events. [2022-01-19 00:50:48,866 INFO L130 PetriNetUnfolder]: For 38389/38394 co-relation queries the response was YES. [2022-01-19 00:50:48,897 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18047 conditions, 3935 events. 1172/3935 cut-off events. For 38389/38394 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 32575 event pairs, 168 based on Foata normal form. 3/3871 useless extension candidates. Maximal degree in co-relation 17920. Up to 633 conditions per place. [2022-01-19 00:50:48,907 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 361 selfloop transitions, 63 changer transitions 36/547 dead transitions. [2022-01-19 00:50:48,907 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 547 transitions, 6087 flow [2022-01-19 00:50:48,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 00:50:48,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 00:50:48,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4001 transitions. [2022-01-19 00:50:48,911 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.649512987012987 [2022-01-19 00:50:48,911 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4001 transitions. [2022-01-19 00:50:48,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4001 transitions. [2022-01-19 00:50:48,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:48,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4001 transitions. [2022-01-19 00:50:48,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.31428571428572) internal successors, (4001), 35 states have internal predecessors, (4001), 0 states have call successors, (0), 0 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 00:50:48,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:50:48,916 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:50:48,916 INFO L186 Difference]: Start difference. First operand has 363 places, 269 transitions, 1946 flow. Second operand 35 states and 4001 transitions. [2022-01-19 00:50:48,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 547 transitions, 6087 flow [2022-01-19 00:50:48,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 547 transitions, 5421 flow, removed 202 selfloop flow, removed 19 redundant places. [2022-01-19 00:50:49,001 INFO L242 Difference]: Finished difference. Result has 388 places, 293 transitions, 2351 flow [2022-01-19 00:50:49,001 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1665, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2351, PETRI_PLACES=388, PETRI_TRANSITIONS=293} [2022-01-19 00:50:49,002 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 229 predicate places. [2022-01-19 00:50:49,002 INFO L470 AbstractCegarLoop]: Abstraction has has 388 places, 293 transitions, 2351 flow [2022-01-19 00:50:49,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:50:49,002 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:49,002 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:50:49,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-19 00:50:49,002 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:49,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:49,002 INFO L85 PathProgramCache]: Analyzing trace with hash -330972291, now seen corresponding path program 8 times [2022-01-19 00:50:49,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:49,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929144085] [2022-01-19 00:50:49,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:49,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:49,390 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 00:50:49,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:49,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929144085] [2022-01-19 00:50:49,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929144085] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:49,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:49,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:50:49,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626863883] [2022-01-19 00:50:49,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:49,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:50:49,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:49,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:50:49,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:50:49,393 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:50:49,394 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 293 transitions, 2351 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:50:49,394 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:49,394 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:50:49,394 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:52,103 INFO L129 PetriNetUnfolder]: 1313/4453 cut-off events. [2022-01-19 00:50:52,103 INFO L130 PetriNetUnfolder]: For 50785/50790 co-relation queries the response was YES. [2022-01-19 00:50:52,148 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20943 conditions, 4453 events. 1313/4453 cut-off events. For 50785/50790 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 38201 event pairs, 229 based on Foata normal form. 1/4304 useless extension candidates. Maximal degree in co-relation 20804. Up to 1198 conditions per place. [2022-01-19 00:50:52,162 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 335 selfloop transitions, 57 changer transitions 44/523 dead transitions. [2022-01-19 00:50:52,162 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 523 transitions, 6112 flow [2022-01-19 00:50:52,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 00:50:52,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 00:50:52,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4011 transitions. [2022-01-19 00:50:52,164 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6511363636363636 [2022-01-19 00:50:52,164 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4011 transitions. [2022-01-19 00:50:52,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4011 transitions. [2022-01-19 00:50:52,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:52,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4011 transitions. [2022-01-19 00:50:52,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.6) internal successors, (4011), 35 states have internal predecessors, (4011), 0 states have call successors, (0), 0 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 00:50:52,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:50:52,170 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:50:52,170 INFO L186 Difference]: Start difference. First operand has 388 places, 293 transitions, 2351 flow. Second operand 35 states and 4011 transitions. [2022-01-19 00:50:52,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 523 transitions, 6112 flow [2022-01-19 00:50:52,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 523 transitions, 5558 flow, removed 175 selfloop flow, removed 19 redundant places. [2022-01-19 00:50:52,317 INFO L242 Difference]: Finished difference. Result has 415 places, 320 transitions, 2659 flow [2022-01-19 00:50:52,318 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1999, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2659, PETRI_PLACES=415, PETRI_TRANSITIONS=320} [2022-01-19 00:50:52,318 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 256 predicate places. [2022-01-19 00:50:52,318 INFO L470 AbstractCegarLoop]: Abstraction has has 415 places, 320 transitions, 2659 flow [2022-01-19 00:50:52,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:50:52,318 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:52,318 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:50:52,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-19 00:50:52,319 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:52,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:52,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1307403661, now seen corresponding path program 9 times [2022-01-19 00:50:52,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:52,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088784978] [2022-01-19 00:50:52,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:52,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:52,719 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 00:50:52,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:52,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088784978] [2022-01-19 00:50:52,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088784978] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:52,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:52,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:50:52,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901741570] [2022-01-19 00:50:52,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:52,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:50:52,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:52,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:50:52,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:50:52,722 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:50:52,723 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 320 transitions, 2659 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:50:52,723 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:52,723 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:50:52,723 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:55,668 INFO L129 PetriNetUnfolder]: 1443/4779 cut-off events. [2022-01-19 00:50:55,668 INFO L130 PetriNetUnfolder]: For 68795/68804 co-relation queries the response was YES. [2022-01-19 00:50:55,709 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24722 conditions, 4779 events. 1443/4779 cut-off events. For 68795/68804 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 41131 event pairs, 294 based on Foata normal form. 5/4692 useless extension candidates. Maximal degree in co-relation 24569. Up to 1220 conditions per place. [2022-01-19 00:50:55,723 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 412 selfloop transitions, 61 changer transitions 36/596 dead transitions. [2022-01-19 00:50:55,724 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 596 transitions, 7408 flow [2022-01-19 00:50:55,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 00:50:55,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 00:50:55,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4004 transitions. [2022-01-19 00:50:55,726 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.65 [2022-01-19 00:50:55,726 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4004 transitions. [2022-01-19 00:50:55,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4004 transitions. [2022-01-19 00:50:55,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:55,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4004 transitions. [2022-01-19 00:50:55,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.4) internal successors, (4004), 35 states have internal predecessors, (4004), 0 states have call successors, (0), 0 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 00:50:55,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:50:55,732 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:50:55,732 INFO L186 Difference]: Start difference. First operand has 415 places, 320 transitions, 2659 flow. Second operand 35 states and 4004 transitions. [2022-01-19 00:50:55,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 596 transitions, 7408 flow [2022-01-19 00:50:56,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 596 transitions, 6681 flow, removed 280 selfloop flow, removed 19 redundant places. [2022-01-19 00:50:56,012 INFO L242 Difference]: Finished difference. Result has 442 places, 346 transitions, 3132 flow [2022-01-19 00:50:56,012 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2314, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3132, PETRI_PLACES=442, PETRI_TRANSITIONS=346} [2022-01-19 00:50:56,012 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 283 predicate places. [2022-01-19 00:50:56,012 INFO L470 AbstractCegarLoop]: Abstraction has has 442 places, 346 transitions, 3132 flow [2022-01-19 00:50:56,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:50:56,013 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:50:56,013 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:50:56,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-19 00:50:56,013 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:50:56,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:50:56,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1590830695, now seen corresponding path program 10 times [2022-01-19 00:50:56,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:50:56,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861760436] [2022-01-19 00:50:56,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:50:56,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:50:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:50:56,387 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 00:50:56,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:50:56,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861760436] [2022-01-19 00:50:56,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861760436] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:50:56,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:50:56,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:50:56,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665205308] [2022-01-19 00:50:56,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:50:56,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:50:56,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:50:56,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:50:56,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:50:56,389 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:50:56,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 346 transitions, 3132 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:50:56,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:50:56,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:50:56,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:50:59,700 INFO L129 PetriNetUnfolder]: 1711/5691 cut-off events. [2022-01-19 00:50:59,701 INFO L130 PetriNetUnfolder]: For 92803/92812 co-relation queries the response was YES. [2022-01-19 00:50:59,754 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29920 conditions, 5691 events. 1711/5691 cut-off events. For 92803/92812 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 51296 event pairs, 362 based on Foata normal form. 1/5516 useless extension candidates. Maximal degree in co-relation 29754. Up to 1116 conditions per place. [2022-01-19 00:50:59,770 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 404 selfloop transitions, 103 changer transitions 40/634 dead transitions. [2022-01-19 00:50:59,770 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 634 transitions, 8420 flow [2022-01-19 00:50:59,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 00:50:59,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 00:50:59,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4024 transitions. [2022-01-19 00:50:59,780 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6532467532467533 [2022-01-19 00:50:59,780 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4024 transitions. [2022-01-19 00:50:59,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4024 transitions. [2022-01-19 00:50:59,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:50:59,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4024 transitions. [2022-01-19 00:50:59,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.97142857142858) internal successors, (4024), 35 states have internal predecessors, (4024), 0 states have call successors, (0), 0 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 00:50:59,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:50:59,785 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:50:59,785 INFO L186 Difference]: Start difference. First operand has 442 places, 346 transitions, 3132 flow. Second operand 35 states and 4024 transitions. [2022-01-19 00:50:59,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 634 transitions, 8420 flow [2022-01-19 00:51:00,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 634 transitions, 7687 flow, removed 298 selfloop flow, removed 19 redundant places. [2022-01-19 00:51:00,041 INFO L242 Difference]: Finished difference. Result has 474 places, 377 transitions, 3713 flow [2022-01-19 00:51:00,041 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2704, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3713, PETRI_PLACES=474, PETRI_TRANSITIONS=377} [2022-01-19 00:51:00,041 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 315 predicate places. [2022-01-19 00:51:00,041 INFO L470 AbstractCegarLoop]: Abstraction has has 474 places, 377 transitions, 3713 flow [2022-01-19 00:51:00,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:51:00,042 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:51:00,042 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:51:00,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-19 00:51:00,042 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:51:00,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:51:00,042 INFO L85 PathProgramCache]: Analyzing trace with hash 118525987, now seen corresponding path program 11 times [2022-01-19 00:51:00,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:51:00,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126260156] [2022-01-19 00:51:00,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:51:00,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:51:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:51:00,434 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 00:51:00,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:51:00,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126260156] [2022-01-19 00:51:00,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126260156] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:51:00,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:51:00,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:51:00,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110380882] [2022-01-19 00:51:00,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:51:00,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:51:00,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:51:00,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:51:00,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:51:00,437 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:51:00,438 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 377 transitions, 3713 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:51:00,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:51:00,438 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:51:00,439 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:51:05,559 INFO L129 PetriNetUnfolder]: 1895/6313 cut-off events. [2022-01-19 00:51:05,559 INFO L130 PetriNetUnfolder]: For 127531/127539 co-relation queries the response was YES. [2022-01-19 00:51:05,627 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36432 conditions, 6313 events. 1895/6313 cut-off events. For 127531/127539 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 58377 event pairs, 480 based on Foata normal form. 5/6200 useless extension candidates. Maximal degree in co-relation 36248. Up to 2135 conditions per place. [2022-01-19 00:51:05,647 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 538 selfloop transitions, 35 changer transitions 112/772 dead transitions. [2022-01-19 00:51:05,647 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 772 transitions, 10935 flow [2022-01-19 00:51:05,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-19 00:51:05,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-01-19 00:51:05,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 7020 transitions. [2022-01-19 00:51:05,650 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6433284457478006 [2022-01-19 00:51:05,650 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 7020 transitions. [2022-01-19 00:51:05,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 7020 transitions. [2022-01-19 00:51:05,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:51:05,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 7020 transitions. [2022-01-19 00:51:05,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 113.2258064516129) internal successors, (7020), 62 states have internal predecessors, (7020), 0 states have call successors, (0), 0 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 00:51:05,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 176.0) internal successors, (11088), 63 states have internal predecessors, (11088), 0 states have call successors, (0), 0 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 00:51:05,659 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 176.0) internal successors, (11088), 63 states have internal predecessors, (11088), 0 states have call successors, (0), 0 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 00:51:05,659 INFO L186 Difference]: Start difference. First operand has 474 places, 377 transitions, 3713 flow. Second operand 62 states and 7020 transitions. [2022-01-19 00:51:05,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 772 transitions, 10935 flow [2022-01-19 00:51:06,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 772 transitions, 10077 flow, removed 426 selfloop flow, removed 16 redundant places. [2022-01-19 00:51:06,102 INFO L242 Difference]: Finished difference. Result has 561 places, 386 transitions, 3823 flow [2022-01-19 00:51:06,103 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=3335, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=3823, PETRI_PLACES=561, PETRI_TRANSITIONS=386} [2022-01-19 00:51:06,103 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 402 predicate places. [2022-01-19 00:51:06,103 INFO L470 AbstractCegarLoop]: Abstraction has has 561 places, 386 transitions, 3823 flow [2022-01-19 00:51:06,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:51:06,104 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:51:06,104 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:51:06,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-19 00:51:06,104 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:51:06,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:51:06,104 INFO L85 PathProgramCache]: Analyzing trace with hash -811381305, now seen corresponding path program 12 times [2022-01-19 00:51:06,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:51:06,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423945663] [2022-01-19 00:51:06,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:51:06,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:51:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:51:06,450 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 00:51:06,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:51:06,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423945663] [2022-01-19 00:51:06,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423945663] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:51:06,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:51:06,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:51:06,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500307011] [2022-01-19 00:51:06,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:51:06,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:51:06,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:51:06,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:51:06,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:51:06,452 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:51:06,453 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 386 transitions, 3823 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:51:06,453 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:51:06,453 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:51:06,453 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:51:10,578 INFO L129 PetriNetUnfolder]: 2012/6943 cut-off events. [2022-01-19 00:51:10,578 INFO L130 PetriNetUnfolder]: For 226317/226329 co-relation queries the response was YES. [2022-01-19 00:51:10,667 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44312 conditions, 6943 events. 2012/6943 cut-off events. For 226317/226329 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 66247 event pairs, 522 based on Foata normal form. 1/6691 useless extension candidates. Maximal degree in co-relation 44086. Up to 2306 conditions per place. [2022-01-19 00:51:10,690 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 469 selfloop transitions, 58 changer transitions 48/662 dead transitions. [2022-01-19 00:51:10,691 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 662 transitions, 10310 flow [2022-01-19 00:51:10,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 00:51:10,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 00:51:10,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4027 transitions. [2022-01-19 00:51:10,693 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6537337662337662 [2022-01-19 00:51:10,693 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4027 transitions. [2022-01-19 00:51:10,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4027 transitions. [2022-01-19 00:51:10,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:51:10,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4027 transitions. [2022-01-19 00:51:10,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.05714285714286) internal successors, (4027), 35 states have internal predecessors, (4027), 0 states have call successors, (0), 0 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 00:51:10,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:51:10,698 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:51:10,698 INFO L186 Difference]: Start difference. First operand has 561 places, 386 transitions, 3823 flow. Second operand 35 states and 4027 transitions. [2022-01-19 00:51:10,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 662 transitions, 10310 flow [2022-01-19 00:51:11,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 662 transitions, 9584 flow, removed 317 selfloop flow, removed 31 redundant places. [2022-01-19 00:51:11,434 INFO L242 Difference]: Finished difference. Result has 545 places, 414 transitions, 4486 flow [2022-01-19 00:51:11,435 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=3646, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4486, PETRI_PLACES=545, PETRI_TRANSITIONS=414} [2022-01-19 00:51:11,435 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 386 predicate places. [2022-01-19 00:51:11,435 INFO L470 AbstractCegarLoop]: Abstraction has has 545 places, 414 transitions, 4486 flow [2022-01-19 00:51:11,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:51:11,435 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:51:11,436 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:51:11,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-19 00:51:11,436 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:51:11,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:51:11,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1969354953, now seen corresponding path program 13 times [2022-01-19 00:51:11,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:51:11,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728585455] [2022-01-19 00:51:11,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:51:11,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:51:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:51:11,814 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 00:51:11,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:51:11,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728585455] [2022-01-19 00:51:11,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728585455] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:51:11,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:51:11,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:51:11,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702164776] [2022-01-19 00:51:11,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:51:11,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:51:11,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:51:11,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:51:11,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:51:11,816 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:51:11,817 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 414 transitions, 4486 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:51:11,817 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:51:11,817 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:51:11,817 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:51:16,264 INFO L129 PetriNetUnfolder]: 2216/7378 cut-off events. [2022-01-19 00:51:16,264 INFO L130 PetriNetUnfolder]: For 243293/243307 co-relation queries the response was YES. [2022-01-19 00:51:16,371 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49416 conditions, 7378 events. 2216/7378 cut-off events. For 243293/243307 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 70824 event pairs, 913 based on Foata normal form. 5/7241 useless extension candidates. Maximal degree in co-relation 49188. Up to 2981 conditions per place. [2022-01-19 00:51:16,400 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 519 selfloop transitions, 51 changer transitions 36/693 dead transitions. [2022-01-19 00:51:16,400 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 693 transitions, 10665 flow [2022-01-19 00:51:16,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 00:51:16,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 00:51:16,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4036 transitions. [2022-01-19 00:51:16,402 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6551948051948052 [2022-01-19 00:51:16,402 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4036 transitions. [2022-01-19 00:51:16,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4036 transitions. [2022-01-19 00:51:16,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:51:16,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4036 transitions. [2022-01-19 00:51:16,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.31428571428572) internal successors, (4036), 35 states have internal predecessors, (4036), 0 states have call successors, (0), 0 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 00:51:16,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:51:16,408 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:51:16,408 INFO L186 Difference]: Start difference. First operand has 545 places, 414 transitions, 4486 flow. Second operand 35 states and 4036 transitions. [2022-01-19 00:51:16,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 693 transitions, 10665 flow [2022-01-19 00:51:17,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 693 transitions, 9921 flow, removed 318 selfloop flow, removed 19 redundant places. [2022-01-19 00:51:17,359 INFO L242 Difference]: Finished difference. Result has 575 places, 442 transitions, 5240 flow [2022-01-19 00:51:17,360 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=3989, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5240, PETRI_PLACES=575, PETRI_TRANSITIONS=442} [2022-01-19 00:51:17,360 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 416 predicate places. [2022-01-19 00:51:17,360 INFO L470 AbstractCegarLoop]: Abstraction has has 575 places, 442 transitions, 5240 flow [2022-01-19 00:51:17,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:51:17,360 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:51:17,361 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:51:17,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-19 00:51:17,361 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:51:17,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:51:17,361 INFO L85 PathProgramCache]: Analyzing trace with hash -699537635, now seen corresponding path program 14 times [2022-01-19 00:51:17,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:51:17,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287042519] [2022-01-19 00:51:17,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:51:17,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:51:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:51:17,723 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 00:51:17,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:51:17,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287042519] [2022-01-19 00:51:17,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287042519] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:51:17,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:51:17,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:51:17,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392489643] [2022-01-19 00:51:17,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:51:17,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:51:17,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:51:17,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:51:17,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:51:17,725 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:51:17,727 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 442 transitions, 5240 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:51:17,727 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:51:17,727 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:51:17,727 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:51:22,248 INFO L129 PetriNetUnfolder]: 2419/8231 cut-off events. [2022-01-19 00:51:22,248 INFO L130 PetriNetUnfolder]: For 289417/289437 co-relation queries the response was YES. [2022-01-19 00:51:22,374 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55178 conditions, 8231 events. 2419/8231 cut-off events. For 289417/289437 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 81263 event pairs, 849 based on Foata normal form. 3/7947 useless extension candidates. Maximal degree in co-relation 54935. Up to 3258 conditions per place. [2022-01-19 00:51:22,408 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 541 selfloop transitions, 56 changer transitions 48/732 dead transitions. [2022-01-19 00:51:22,408 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 732 transitions, 12273 flow [2022-01-19 00:51:22,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 00:51:22,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 00:51:22,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4043 transitions. [2022-01-19 00:51:22,411 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6563311688311688 [2022-01-19 00:51:22,411 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4043 transitions. [2022-01-19 00:51:22,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4043 transitions. [2022-01-19 00:51:22,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:51:22,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4043 transitions. [2022-01-19 00:51:22,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.51428571428572) internal successors, (4043), 35 states have internal predecessors, (4043), 0 states have call successors, (0), 0 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 00:51:22,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:51:22,416 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:51:22,416 INFO L186 Difference]: Start difference. First operand has 575 places, 442 transitions, 5240 flow. Second operand 35 states and 4043 transitions. [2022-01-19 00:51:22,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 732 transitions, 12273 flow [2022-01-19 00:51:23,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 732 transitions, 11244 flow, removed 483 selfloop flow, removed 18 redundant places. [2022-01-19 00:51:23,601 INFO L242 Difference]: Finished difference. Result has 606 places, 471 transitions, 5439 flow [2022-01-19 00:51:23,602 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=4510, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5439, PETRI_PLACES=606, PETRI_TRANSITIONS=471} [2022-01-19 00:51:23,602 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 447 predicate places. [2022-01-19 00:51:23,602 INFO L470 AbstractCegarLoop]: Abstraction has has 606 places, 471 transitions, 5439 flow [2022-01-19 00:51:23,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:51:23,603 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:51:23,603 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:51:23,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-19 00:51:23,603 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:51:23,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:51:23,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1170005665, now seen corresponding path program 15 times [2022-01-19 00:51:23,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:51:23,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888189218] [2022-01-19 00:51:23,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:51:23,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:51:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:51:24,002 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 00:51:24,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:51:24,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888189218] [2022-01-19 00:51:24,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888189218] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:51:24,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:51:24,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:51:24,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538149132] [2022-01-19 00:51:24,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:51:24,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:51:24,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:51:24,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:51:24,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:51:24,005 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:51:24,006 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 471 transitions, 5439 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:51:24,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:51:24,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:51:24,006 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:51:28,937 INFO L129 PetriNetUnfolder]: 2490/8185 cut-off events. [2022-01-19 00:51:28,937 INFO L130 PetriNetUnfolder]: For 322755/322776 co-relation queries the response was YES. [2022-01-19 00:51:29,078 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58380 conditions, 8185 events. 2490/8185 cut-off events. For 322755/322776 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 79835 event pairs, 1149 based on Foata normal form. 9/8015 useless extension candidates. Maximal degree in co-relation 58122. Up to 3342 conditions per place. [2022-01-19 00:51:29,113 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 590 selfloop transitions, 55 changer transitions 36/768 dead transitions. [2022-01-19 00:51:29,113 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 625 places, 768 transitions, 12333 flow [2022-01-19 00:51:29,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 00:51:29,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 00:51:29,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4048 transitions. [2022-01-19 00:51:29,116 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2022-01-19 00:51:29,116 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4048 transitions. [2022-01-19 00:51:29,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4048 transitions. [2022-01-19 00:51:29,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:51:29,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4048 transitions. [2022-01-19 00:51:29,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.65714285714286) internal successors, (4048), 35 states have internal predecessors, (4048), 0 states have call successors, (0), 0 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 00:51:29,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:51:29,122 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:51:29,122 INFO L186 Difference]: Start difference. First operand has 606 places, 471 transitions, 5439 flow. Second operand 35 states and 4048 transitions. [2022-01-19 00:51:29,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 625 places, 768 transitions, 12333 flow [2022-01-19 00:51:30,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 768 transitions, 11553 flow, removed 354 selfloop flow, removed 18 redundant places. [2022-01-19 00:51:30,517 INFO L242 Difference]: Finished difference. Result has 631 places, 493 transitions, 5911 flow [2022-01-19 00:51:30,518 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=4873, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5911, PETRI_PLACES=631, PETRI_TRANSITIONS=493} [2022-01-19 00:51:30,518 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 472 predicate places. [2022-01-19 00:51:30,518 INFO L470 AbstractCegarLoop]: Abstraction has has 631 places, 493 transitions, 5911 flow [2022-01-19 00:51:30,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:51:30,519 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:51:30,519 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:51:30,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-19 00:51:30,519 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:51:30,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:51:30,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1067004845, now seen corresponding path program 16 times [2022-01-19 00:51:30,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:51:30,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003364257] [2022-01-19 00:51:30,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:51:30,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:51:30,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:51:30,885 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 00:51:30,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:51:30,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003364257] [2022-01-19 00:51:30,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003364257] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:51:30,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:51:30,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:51:30,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888314083] [2022-01-19 00:51:30,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:51:30,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:51:30,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:51:30,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:51:30,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:51:30,889 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:51:30,890 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 631 places, 493 transitions, 5911 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:51:30,890 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:51:30,891 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:51:30,891 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:51:37,855 INFO L129 PetriNetUnfolder]: 3021/10115 cut-off events. [2022-01-19 00:51:37,855 INFO L130 PetriNetUnfolder]: For 411229/411252 co-relation queries the response was YES. [2022-01-19 00:51:38,076 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72424 conditions, 10115 events. 3021/10115 cut-off events. For 411229/411252 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 103491 event pairs, 1276 based on Foata normal form. 5/9768 useless extension candidates. Maximal degree in co-relation 72157. Up to 3584 conditions per place. [2022-01-19 00:51:38,114 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 665 selfloop transitions, 35 changer transitions 81/868 dead transitions. [2022-01-19 00:51:38,114 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 868 transitions, 14404 flow [2022-01-19 00:51:38,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-19 00:51:38,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-01-19 00:51:38,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 6076 transitions. [2022-01-19 00:51:38,117 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6513722126929674 [2022-01-19 00:51:38,117 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 6076 transitions. [2022-01-19 00:51:38,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 6076 transitions. [2022-01-19 00:51:38,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:51:38,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 6076 transitions. [2022-01-19 00:51:38,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 114.64150943396227) internal successors, (6076), 53 states have internal predecessors, (6076), 0 states have call successors, (0), 0 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 00:51:38,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 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 00:51:38,125 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 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 00:51:38,125 INFO L186 Difference]: Start difference. First operand has 631 places, 493 transitions, 5911 flow. Second operand 53 states and 6076 transitions. [2022-01-19 00:51:38,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 868 transitions, 14404 flow [2022-01-19 00:51:39,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 648 places, 868 transitions, 13635 flow, removed 337 selfloop flow, removed 20 redundant places. [2022-01-19 00:51:39,955 INFO L242 Difference]: Finished difference. Result has 698 places, 507 transitions, 5944 flow [2022-01-19 00:51:39,955 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=5290, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=5944, PETRI_PLACES=698, PETRI_TRANSITIONS=507} [2022-01-19 00:51:39,955 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 539 predicate places. [2022-01-19 00:51:39,955 INFO L470 AbstractCegarLoop]: Abstraction has has 698 places, 507 transitions, 5944 flow [2022-01-19 00:51:39,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:51:39,956 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:51:39,956 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:51:39,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-19 00:51:39,956 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:51:39,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:51:39,956 INFO L85 PathProgramCache]: Analyzing trace with hash 991624865, now seen corresponding path program 17 times [2022-01-19 00:51:39,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:51:39,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341507400] [2022-01-19 00:51:39,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:51:39,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:51:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:51:40,338 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 00:51:40,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:51:40,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341507400] [2022-01-19 00:51:40,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341507400] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:51:40,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:51:40,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:51:40,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995274627] [2022-01-19 00:51:40,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:51:40,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:51:40,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:51:40,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:51:40,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:51:40,340 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:51:40,341 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 698 places, 507 transitions, 5944 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:51:40,341 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:51:40,341 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:51:40,342 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:51:46,955 INFO L129 PetriNetUnfolder]: 3095/10423 cut-off events. [2022-01-19 00:51:46,955 INFO L130 PetriNetUnfolder]: For 559101/559125 co-relation queries the response was YES. [2022-01-19 00:51:47,143 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81555 conditions, 10423 events. 3095/10423 cut-off events. For 559101/559125 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 107767 event pairs, 1220 based on Foata normal form. 11/10228 useless extension candidates. Maximal degree in co-relation 81251. Up to 4409 conditions per place. [2022-01-19 00:51:47,233 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 638 selfloop transitions, 74 changer transitions 59/858 dead transitions. [2022-01-19 00:51:47,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 708 places, 858 transitions, 15136 flow [2022-01-19 00:51:47,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-19 00:51:47,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-01-19 00:51:47,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 5360 transitions. [2022-01-19 00:51:47,236 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6479690522243714 [2022-01-19 00:51:47,236 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 5360 transitions. [2022-01-19 00:51:47,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 5360 transitions. [2022-01-19 00:51:47,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:51:47,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 5360 transitions. [2022-01-19 00:51:47,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 114.04255319148936) internal successors, (5360), 47 states have internal predecessors, (5360), 0 states have call successors, (0), 0 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 00:51:47,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 176.0) internal successors, (8448), 48 states have internal predecessors, (8448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:51:47,243 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 176.0) internal successors, (8448), 48 states have internal predecessors, (8448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:51:47,243 INFO L186 Difference]: Start difference. First operand has 698 places, 507 transitions, 5944 flow. Second operand 47 states and 5360 transitions. [2022-01-19 00:51:47,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 708 places, 858 transitions, 15136 flow [2022-01-19 00:51:49,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 682 places, 858 transitions, 14697 flow, removed 203 selfloop flow, removed 26 redundant places. [2022-01-19 00:51:49,699 INFO L242 Difference]: Finished difference. Result has 721 places, 528 transitions, 6760 flow [2022-01-19 00:51:49,700 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=5638, PETRI_DIFFERENCE_MINUEND_PLACES=636, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=6760, PETRI_PLACES=721, PETRI_TRANSITIONS=528} [2022-01-19 00:51:49,700 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 562 predicate places. [2022-01-19 00:51:49,700 INFO L470 AbstractCegarLoop]: Abstraction has has 721 places, 528 transitions, 6760 flow [2022-01-19 00:51:49,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:51:49,700 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:51:49,700 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:51:49,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-19 00:51:49,700 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:51:49,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:51:49,701 INFO L85 PathProgramCache]: Analyzing trace with hash 2121014501, now seen corresponding path program 18 times [2022-01-19 00:51:49,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:51:49,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570186246] [2022-01-19 00:51:49,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:51:49,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:51:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:51:50,064 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 00:51:50,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:51:50,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570186246] [2022-01-19 00:51:50,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570186246] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:51:50,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:51:50,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:51:50,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891866266] [2022-01-19 00:51:50,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:51:50,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:51:50,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:51:50,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:51:50,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:51:50,066 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:51:50,067 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 721 places, 528 transitions, 6760 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:51:50,068 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:51:50,068 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:51:50,068 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:51:56,776 INFO L129 PetriNetUnfolder]: 3366/11066 cut-off events. [2022-01-19 00:51:56,776 INFO L130 PetriNetUnfolder]: For 598383/598412 co-relation queries the response was YES. [2022-01-19 00:51:56,996 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89510 conditions, 11066 events. 3366/11066 cut-off events. For 598383/598412 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 114942 event pairs, 2181 based on Foata normal form. 5/10743 useless extension candidates. Maximal degree in co-relation 89191. Up to 3666 conditions per place. [2022-01-19 00:51:57,042 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 657 selfloop transitions, 43 changer transitions 44/831 dead transitions. [2022-01-19 00:51:57,042 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 726 places, 831 transitions, 14905 flow [2022-01-19 00:51:57,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 00:51:57,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 00:51:57,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4092 transitions. [2022-01-19 00:51:57,044 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6642857142857143 [2022-01-19 00:51:57,044 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4092 transitions. [2022-01-19 00:51:57,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4092 transitions. [2022-01-19 00:51:57,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:51:57,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4092 transitions. [2022-01-19 00:51:57,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 116.91428571428571) internal successors, (4092), 35 states have internal predecessors, (4092), 0 states have call successors, (0), 0 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 00:51:57,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:51:57,049 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:51:57,050 INFO L186 Difference]: Start difference. First operand has 721 places, 528 transitions, 6760 flow. Second operand 35 states and 4092 transitions. [2022-01-19 00:51:57,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 726 places, 831 transitions, 14905 flow [2022-01-19 00:52:00,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 695 places, 831 transitions, 14033 flow, removed 385 selfloop flow, removed 31 redundant places. [2022-01-19 00:52:00,216 INFO L242 Difference]: Finished difference. Result has 727 places, 559 transitions, 7237 flow [2022-01-19 00:52:00,217 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=6136, PETRI_DIFFERENCE_MINUEND_PLACES=661, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=7237, PETRI_PLACES=727, PETRI_TRANSITIONS=559} [2022-01-19 00:52:00,217 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 568 predicate places. [2022-01-19 00:52:00,217 INFO L470 AbstractCegarLoop]: Abstraction has has 727 places, 559 transitions, 7237 flow [2022-01-19 00:52:00,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:52:00,218 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:00,218 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:00,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-19 00:52:00,218 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:52:00,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:00,218 INFO L85 PathProgramCache]: Analyzing trace with hash 857333235, now seen corresponding path program 19 times [2022-01-19 00:52:00,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:00,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907887200] [2022-01-19 00:52:00,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:00,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:00,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:00,602 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 00:52:00,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:00,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907887200] [2022-01-19 00:52:00,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907887200] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:00,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:00,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:52:00,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7965503] [2022-01-19 00:52:00,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:00,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:52:00,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:00,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:52:00,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:52:00,605 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:52:00,606 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 727 places, 559 transitions, 7237 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:52:00,606 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:00,606 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:52:00,606 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:08,262 INFO L129 PetriNetUnfolder]: 3661/12196 cut-off events. [2022-01-19 00:52:08,263 INFO L130 PetriNetUnfolder]: For 680291/680322 co-relation queries the response was YES. [2022-01-19 00:52:08,540 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99463 conditions, 12196 events. 3661/12196 cut-off events. For 680291/680322 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 130288 event pairs, 1386 based on Foata normal form. 15/11971 useless extension candidates. Maximal degree in co-relation 99137. Up to 5008 conditions per place. [2022-01-19 00:52:08,652 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 717 selfloop transitions, 70 changer transitions 39/913 dead transitions. [2022-01-19 00:52:08,652 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 748 places, 913 transitions, 16736 flow [2022-01-19 00:52:08,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:52:08,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:52:08,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 4296 transitions. [2022-01-19 00:52:08,655 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6597051597051597 [2022-01-19 00:52:08,655 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 4296 transitions. [2022-01-19 00:52:08,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 4296 transitions. [2022-01-19 00:52:08,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:08,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 4296 transitions. [2022-01-19 00:52:08,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 116.10810810810811) internal successors, (4296), 37 states have internal predecessors, (4296), 0 states have call successors, (0), 0 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 00:52:08,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 176.0) internal successors, (6688), 38 states have internal predecessors, (6688), 0 states have call successors, (0), 0 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 00:52:08,661 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 176.0) internal successors, (6688), 38 states have internal predecessors, (6688), 0 states have call successors, (0), 0 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 00:52:08,662 INFO L186 Difference]: Start difference. First operand has 727 places, 559 transitions, 7237 flow. Second operand 37 states and 4296 transitions. [2022-01-19 00:52:08,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 748 places, 913 transitions, 16736 flow [2022-01-19 00:52:11,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 732 places, 913 transitions, 15892 flow, removed 417 selfloop flow, removed 16 redundant places. [2022-01-19 00:52:11,943 INFO L242 Difference]: Finished difference. Result has 763 places, 586 transitions, 7926 flow [2022-01-19 00:52:11,944 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=6593, PETRI_DIFFERENCE_MINUEND_PLACES=696, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7926, PETRI_PLACES=763, PETRI_TRANSITIONS=586} [2022-01-19 00:52:11,944 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 604 predicate places. [2022-01-19 00:52:11,944 INFO L470 AbstractCegarLoop]: Abstraction has has 763 places, 586 transitions, 7926 flow [2022-01-19 00:52:11,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:52:11,945 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:11,945 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:11,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-19 00:52:11,945 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:52:11,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:11,945 INFO L85 PathProgramCache]: Analyzing trace with hash -38731419, now seen corresponding path program 20 times [2022-01-19 00:52:11,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:11,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10591029] [2022-01-19 00:52:11,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:11,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:12,331 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 00:52:12,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:12,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10591029] [2022-01-19 00:52:12,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10591029] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:12,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:12,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:52:12,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114979907] [2022-01-19 00:52:12,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:12,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:52:12,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:12,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:52:12,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:52:12,333 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:52:12,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 763 places, 586 transitions, 7926 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:52:12,334 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:12,334 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:52:12,334 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:19,879 INFO L129 PetriNetUnfolder]: 3738/12289 cut-off events. [2022-01-19 00:52:19,879 INFO L130 PetriNetUnfolder]: For 767031/767066 co-relation queries the response was YES. [2022-01-19 00:52:20,146 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104361 conditions, 12289 events. 3738/12289 cut-off events. For 767031/767066 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 131469 event pairs, 1611 based on Foata normal form. 5/11865 useless extension candidates. Maximal degree in co-relation 104019. Up to 3686 conditions per place. [2022-01-19 00:52:20,205 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 706 selfloop transitions, 115 changer transitions 43/951 dead transitions. [2022-01-19 00:52:20,206 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 780 places, 951 transitions, 18744 flow [2022-01-19 00:52:20,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 00:52:20,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 00:52:20,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4037 transitions. [2022-01-19 00:52:20,208 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6553571428571429 [2022-01-19 00:52:20,208 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4037 transitions. [2022-01-19 00:52:20,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4037 transitions. [2022-01-19 00:52:20,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:20,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4037 transitions. [2022-01-19 00:52:20,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.34285714285714) internal successors, (4037), 35 states have internal predecessors, (4037), 0 states have call successors, (0), 0 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 00:52:20,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:52:20,214 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:52:20,214 INFO L186 Difference]: Start difference. First operand has 763 places, 586 transitions, 7926 flow. Second operand 35 states and 4037 transitions. [2022-01-19 00:52:20,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 780 places, 951 transitions, 18744 flow [2022-01-19 00:52:23,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 759 places, 951 transitions, 17931 flow, removed 372 selfloop flow, removed 21 redundant places. [2022-01-19 00:52:23,743 INFO L242 Difference]: Finished difference. Result has 783 places, 608 transitions, 8339 flow [2022-01-19 00:52:23,743 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=7309, PETRI_DIFFERENCE_MINUEND_PLACES=725, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=8339, PETRI_PLACES=783, PETRI_TRANSITIONS=608} [2022-01-19 00:52:23,744 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 624 predicate places. [2022-01-19 00:52:23,744 INFO L470 AbstractCegarLoop]: Abstraction has has 783 places, 608 transitions, 8339 flow [2022-01-19 00:52:23,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:52:23,744 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:23,744 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:23,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-19 00:52:23,745 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:52:23,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:23,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1945981831, now seen corresponding path program 21 times [2022-01-19 00:52:23,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:23,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914361093] [2022-01-19 00:52:23,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:23,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:24,103 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 00:52:24,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:24,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914361093] [2022-01-19 00:52:24,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914361093] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:24,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:24,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:52:24,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112398895] [2022-01-19 00:52:24,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:24,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:52:24,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:24,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:52:24,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:52:24,105 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:52:24,106 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 783 places, 608 transitions, 8339 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:52:24,106 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:24,106 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:52:24,106 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:32,124 INFO L129 PetriNetUnfolder]: 3757/12483 cut-off events. [2022-01-19 00:52:32,124 INFO L130 PetriNetUnfolder]: For 800795/800827 co-relation queries the response was YES. [2022-01-19 00:52:32,411 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107627 conditions, 12483 events. 3757/12483 cut-off events. For 800795/800827 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 133792 event pairs, 1437 based on Foata normal form. 11/12248 useless extension candidates. Maximal degree in co-relation 107278. Up to 5158 conditions per place. [2022-01-19 00:52:32,535 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 727 selfloop transitions, 68 changer transitions 40/922 dead transitions. [2022-01-19 00:52:32,535 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 802 places, 922 transitions, 17019 flow [2022-01-19 00:52:32,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 00:52:32,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 00:52:32,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4033 transitions. [2022-01-19 00:52:32,537 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6547077922077922 [2022-01-19 00:52:32,537 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4033 transitions. [2022-01-19 00:52:32,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4033 transitions. [2022-01-19 00:52:32,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:32,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4033 transitions. [2022-01-19 00:52:32,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.22857142857143) internal successors, (4033), 35 states have internal predecessors, (4033), 0 states have call successors, (0), 0 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 00:52:32,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:52:32,543 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:52:32,543 INFO L186 Difference]: Start difference. First operand has 783 places, 608 transitions, 8339 flow. Second operand 35 states and 4033 transitions. [2022-01-19 00:52:32,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 802 places, 922 transitions, 17019 flow [2022-01-19 00:52:36,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 782 places, 922 transitions, 16130 flow, removed 321 selfloop flow, removed 20 redundant places. [2022-01-19 00:52:36,635 INFO L242 Difference]: Finished difference. Result has 811 places, 635 transitions, 9159 flow [2022-01-19 00:52:36,635 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=7685, PETRI_DIFFERENCE_MINUEND_PLACES=748, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=9159, PETRI_PLACES=811, PETRI_TRANSITIONS=635} [2022-01-19 00:52:36,636 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 652 predicate places. [2022-01-19 00:52:36,636 INFO L470 AbstractCegarLoop]: Abstraction has has 811 places, 635 transitions, 9159 flow [2022-01-19 00:52:36,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:52:36,636 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:36,636 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:36,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-19 00:52:36,636 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:52:36,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:36,637 INFO L85 PathProgramCache]: Analyzing trace with hash -63014687, now seen corresponding path program 22 times [2022-01-19 00:52:36,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:36,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689271763] [2022-01-19 00:52:36,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:36,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:37,068 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 00:52:37,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:37,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689271763] [2022-01-19 00:52:37,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689271763] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:37,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:37,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:52:37,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969704757] [2022-01-19 00:52:37,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:37,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:52:37,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:37,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:52:37,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:52:37,070 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:52:37,071 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 811 places, 635 transitions, 9159 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:52:37,071 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:37,071 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:52:37,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:45,281 INFO L129 PetriNetUnfolder]: 4032/13187 cut-off events. [2022-01-19 00:52:45,281 INFO L130 PetriNetUnfolder]: For 907746/907789 co-relation queries the response was YES. [2022-01-19 00:52:45,571 INFO L84 FinitePrefix]: Finished finitePrefix Result has 117478 conditions, 13187 events. 4032/13187 cut-off events. For 907746/907789 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 142811 event pairs, 2131 based on Foata normal form. 7/12756 useless extension candidates. Maximal degree in co-relation 117114. Up to 3703 conditions per place. [2022-01-19 00:52:45,631 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 756 selfloop transitions, 64 changer transitions 43/950 dead transitions. [2022-01-19 00:52:45,632 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 830 places, 950 transitions, 18778 flow [2022-01-19 00:52:45,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 00:52:45,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 00:52:45,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4067 transitions. [2022-01-19 00:52:45,634 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6602272727272728 [2022-01-19 00:52:45,634 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4067 transitions. [2022-01-19 00:52:45,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4067 transitions. [2022-01-19 00:52:45,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:45,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4067 transitions. [2022-01-19 00:52:45,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 116.2) internal successors, (4067), 35 states have internal predecessors, (4067), 0 states have call successors, (0), 0 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 00:52:45,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:52:45,639 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:52:45,640 INFO L186 Difference]: Start difference. First operand has 811 places, 635 transitions, 9159 flow. Second operand 35 states and 4067 transitions. [2022-01-19 00:52:45,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 830 places, 950 transitions, 18778 flow [2022-01-19 00:52:50,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 811 places, 950 transitions, 17813 flow, removed 438 selfloop flow, removed 19 redundant places. [2022-01-19 00:52:50,105 INFO L242 Difference]: Finished difference. Result has 840 places, 662 transitions, 9474 flow [2022-01-19 00:52:50,105 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=8332, PETRI_DIFFERENCE_MINUEND_PLACES=777, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=9474, PETRI_PLACES=840, PETRI_TRANSITIONS=662} [2022-01-19 00:52:50,105 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 681 predicate places. [2022-01-19 00:52:50,105 INFO L470 AbstractCegarLoop]: Abstraction has has 840 places, 662 transitions, 9474 flow [2022-01-19 00:52:50,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:52:50,106 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:50,106 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:50,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-19 00:52:50,106 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:52:50,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:50,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1358484851, now seen corresponding path program 23 times [2022-01-19 00:52:50,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:50,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187888299] [2022-01-19 00:52:50,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:50,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:50,452 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 00:52:50,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:50,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187888299] [2022-01-19 00:52:50,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187888299] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:50,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:50,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:52:50,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299840628] [2022-01-19 00:52:50,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:50,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:52:50,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:50,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:52:50,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:52:50,454 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:52:50,455 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 840 places, 662 transitions, 9474 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:52:50,455 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:50,455 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:52:50,455 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:59,323 INFO L129 PetriNetUnfolder]: 4080/13606 cut-off events. [2022-01-19 00:52:59,323 INFO L130 PetriNetUnfolder]: For 997469/997499 co-relation queries the response was YES. [2022-01-19 00:52:59,741 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123147 conditions, 13606 events. 4080/13606 cut-off events. For 997469/997499 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 148978 event pairs, 1512 based on Foata normal form. 11/13348 useless extension candidates. Maximal degree in co-relation 122769. Up to 5757 conditions per place. [2022-01-19 00:52:59,812 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 776 selfloop transitions, 78 changer transitions 49/990 dead transitions. [2022-01-19 00:52:59,812 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 865 places, 990 transitions, 19403 flow [2022-01-19 00:52:59,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-19 00:52:59,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-01-19 00:52:59,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 4691 transitions. [2022-01-19 00:52:59,815 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6500831485587583 [2022-01-19 00:52:59,815 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 4691 transitions. [2022-01-19 00:52:59,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 4691 transitions. [2022-01-19 00:52:59,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:59,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 4691 transitions. [2022-01-19 00:52:59,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 114.41463414634147) internal successors, (4691), 41 states have internal predecessors, (4691), 0 states have call successors, (0), 0 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 00:52:59,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 176.0) internal successors, (7392), 42 states have internal predecessors, (7392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:59,822 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 176.0) internal successors, (7392), 42 states have internal predecessors, (7392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:59,822 INFO L186 Difference]: Start difference. First operand has 840 places, 662 transitions, 9474 flow. Second operand 41 states and 4691 transitions. [2022-01-19 00:52:59,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 865 places, 990 transitions, 19403 flow [2022-01-19 00:53:05,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 846 places, 990 transitions, 18493 flow, removed 417 selfloop flow, removed 19 redundant places. [2022-01-19 00:53:05,589 INFO L242 Difference]: Finished difference. Result has 876 places, 681 transitions, 9982 flow [2022-01-19 00:53:05,589 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=8795, PETRI_DIFFERENCE_MINUEND_PLACES=806, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=9982, PETRI_PLACES=876, PETRI_TRANSITIONS=681} [2022-01-19 00:53:05,590 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 717 predicate places. [2022-01-19 00:53:05,590 INFO L470 AbstractCegarLoop]: Abstraction has has 876 places, 681 transitions, 9982 flow [2022-01-19 00:53:05,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:53:05,590 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:05,590 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:05,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-19 00:53:05,590 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:53:05,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:05,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1168624123, now seen corresponding path program 24 times [2022-01-19 00:53:05,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:05,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233074538] [2022-01-19 00:53:05,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:05,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:05,965 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 00:53:05,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:05,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233074538] [2022-01-19 00:53:05,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233074538] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:05,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:05,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:53:05,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529228319] [2022-01-19 00:53:05,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:05,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:53:05,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:05,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:53:05,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:53:05,968 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:53:05,969 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 876 places, 681 transitions, 9982 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:53:05,969 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:05,969 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:53:05,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:16,799 INFO L129 PetriNetUnfolder]: 4270/13765 cut-off events. [2022-01-19 00:53:16,799 INFO L130 PetriNetUnfolder]: For 1131758/1131788 co-relation queries the response was YES. [2022-01-19 00:53:17,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132973 conditions, 13765 events. 4270/13765 cut-off events. For 1131758/1131788 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 149220 event pairs, 2407 based on Foata normal form. 9/13410 useless extension candidates. Maximal degree in co-relation 132580. Up to 4628 conditions per place. [2022-01-19 00:53:17,261 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 840 selfloop transitions, 42 changer transitions 72/1041 dead transitions. [2022-01-19 00:53:17,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 906 places, 1041 transitions, 21852 flow [2022-01-19 00:53:17,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-19 00:53:17,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-01-19 00:53:17,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 6053 transitions. [2022-01-19 00:53:17,264 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6489065180102916 [2022-01-19 00:53:17,264 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 6053 transitions. [2022-01-19 00:53:17,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 6053 transitions. [2022-01-19 00:53:17,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:17,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 6053 transitions. [2022-01-19 00:53:17,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 114.20754716981132) internal successors, (6053), 53 states have internal predecessors, (6053), 0 states have call successors, (0), 0 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 00:53:17,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 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 00:53:17,272 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 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 00:53:17,272 INFO L186 Difference]: Start difference. First operand has 876 places, 681 transitions, 9982 flow. Second operand 53 states and 6053 transitions. [2022-01-19 00:53:17,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 906 places, 1041 transitions, 21852 flow [2022-01-19 00:53:24,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 878 places, 1041 transitions, 20591 flow, removed 576 selfloop flow, removed 28 redundant places. [2022-01-19 00:53:24,266 INFO L242 Difference]: Finished difference. Result has 927 places, 694 transitions, 10087 flow [2022-01-19 00:53:24,266 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=9257, PETRI_DIFFERENCE_MINUEND_PLACES=826, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=639, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=10087, PETRI_PLACES=927, PETRI_TRANSITIONS=694} [2022-01-19 00:53:24,266 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 768 predicate places. [2022-01-19 00:53:24,267 INFO L470 AbstractCegarLoop]: Abstraction has has 927 places, 694 transitions, 10087 flow [2022-01-19 00:53:24,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:53:24,267 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:24,267 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:24,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-19 00:53:24,267 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:53:24,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:24,267 INFO L85 PathProgramCache]: Analyzing trace with hash 806348933, now seen corresponding path program 25 times [2022-01-19 00:53:24,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:24,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750890763] [2022-01-19 00:53:24,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:24,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:24,666 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 00:53:24,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:24,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750890763] [2022-01-19 00:53:24,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750890763] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:24,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:24,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:53:24,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198069237] [2022-01-19 00:53:24,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:24,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:53:24,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:24,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:53:24,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:53:24,669 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:53:24,669 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 927 places, 694 transitions, 10087 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:53:24,670 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:24,670 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:53:24,670 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:36,298 INFO L129 PetriNetUnfolder]: 4594/14898 cut-off events. [2022-01-19 00:53:36,298 INFO L130 PetriNetUnfolder]: For 1525977/1526022 co-relation queries the response was YES. [2022-01-19 00:53:36,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 154824 conditions, 14898 events. 4594/14898 cut-off events. For 1525977/1526022 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 164491 event pairs, 2642 based on Foata normal form. 10/14444 useless extension candidates. Maximal degree in co-relation 154402. Up to 4374 conditions per place. [2022-01-19 00:53:36,758 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 846 selfloop transitions, 48 changer transitions 76/1057 dead transitions. [2022-01-19 00:53:36,758 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 943 places, 1057 transitions, 23125 flow [2022-01-19 00:53:36,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-19 00:53:36,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-01-19 00:53:36,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 6052 transitions. [2022-01-19 00:53:36,761 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6487993138936535 [2022-01-19 00:53:36,761 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 6052 transitions. [2022-01-19 00:53:36,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 6052 transitions. [2022-01-19 00:53:36,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:36,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 6052 transitions. [2022-01-19 00:53:36,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 114.18867924528301) internal successors, (6052), 53 states have internal predecessors, (6052), 0 states have call successors, (0), 0 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 00:53:36,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 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 00:53:36,770 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 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 00:53:36,770 INFO L186 Difference]: Start difference. First operand has 927 places, 694 transitions, 10087 flow. Second operand 53 states and 6052 transitions. [2022-01-19 00:53:36,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 943 places, 1057 transitions, 23125 flow [2022-01-19 00:53:44,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 904 places, 1057 transitions, 21447 flow, removed 815 selfloop flow, removed 39 redundant places. [2022-01-19 00:53:44,765 INFO L242 Difference]: Finished difference. Result has 953 places, 707 transitions, 10482 flow [2022-01-19 00:53:44,765 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=9637, PETRI_DIFFERENCE_MINUEND_PLACES=852, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=646, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=10482, PETRI_PLACES=953, PETRI_TRANSITIONS=707} [2022-01-19 00:53:44,766 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 794 predicate places. [2022-01-19 00:53:44,766 INFO L470 AbstractCegarLoop]: Abstraction has has 953 places, 707 transitions, 10482 flow [2022-01-19 00:53:44,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:53:44,766 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:44,766 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:44,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-19 00:53:44,766 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:53:44,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:44,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1658438515, now seen corresponding path program 26 times [2022-01-19 00:53:44,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:44,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035327686] [2022-01-19 00:53:44,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:44,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:45,124 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 00:53:45,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:45,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035327686] [2022-01-19 00:53:45,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035327686] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:45,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:45,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:53:45,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411163572] [2022-01-19 00:53:45,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:45,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:53:45,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:45,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:53:45,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:53:45,126 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:53:45,127 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 953 places, 707 transitions, 10482 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:53:45,127 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:45,127 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:53:45,127 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:57,241 INFO L129 PetriNetUnfolder]: 4817/16066 cut-off events. [2022-01-19 00:53:57,242 INFO L130 PetriNetUnfolder]: For 1650889/1650930 co-relation queries the response was YES. [2022-01-19 00:53:57,750 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166300 conditions, 16066 events. 4817/16066 cut-off events. For 1650889/1650930 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 181540 event pairs, 1963 based on Foata normal form. 18/15707 useless extension candidates. Maximal degree in co-relation 165865. Up to 6908 conditions per place. [2022-01-19 00:53:57,837 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 889 selfloop transitions, 87 changer transitions 64/1127 dead transitions. [2022-01-19 00:53:57,837 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 964 places, 1127 transitions, 23863 flow [2022-01-19 00:53:57,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-19 00:53:57,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-01-19 00:53:57,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 5477 transitions. [2022-01-19 00:53:57,840 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6483191287878788 [2022-01-19 00:53:57,840 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 5477 transitions. [2022-01-19 00:53:57,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 5477 transitions. [2022-01-19 00:53:57,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:57,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 5477 transitions. [2022-01-19 00:53:57,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 114.10416666666667) internal successors, (5477), 48 states have internal predecessors, (5477), 0 states have call successors, (0), 0 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 00:53:57,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 176.0) internal successors, (8624), 49 states have internal predecessors, (8624), 0 states have call successors, (0), 0 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 00:53:57,847 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 176.0) internal successors, (8624), 49 states have internal predecessors, (8624), 0 states have call successors, (0), 0 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 00:53:57,847 INFO L186 Difference]: Start difference. First operand has 953 places, 707 transitions, 10482 flow. Second operand 48 states and 5477 transitions. [2022-01-19 00:53:57,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 964 places, 1127 transitions, 23863 flow [2022-01-19 00:54:06,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 926 places, 1127 transitions, 22983 flow, removed 418 selfloop flow, removed 38 redundant places. [2022-01-19 00:54:06,801 INFO L242 Difference]: Finished difference. Result has 967 places, 732 transitions, 11520 flow [2022-01-19 00:54:06,801 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=10015, PETRI_DIFFERENCE_MINUEND_PLACES=879, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=628, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=11520, PETRI_PLACES=967, PETRI_TRANSITIONS=732} [2022-01-19 00:54:06,802 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 808 predicate places. [2022-01-19 00:54:06,802 INFO L470 AbstractCegarLoop]: Abstraction has has 967 places, 732 transitions, 11520 flow [2022-01-19 00:54:06,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:54:06,802 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:54:06,802 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:54:06,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-19 00:54:06,802 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:54:06,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:54:06,803 INFO L85 PathProgramCache]: Analyzing trace with hash 744283709, now seen corresponding path program 27 times [2022-01-19 00:54:06,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:54:06,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311783387] [2022-01-19 00:54:06,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:54:06,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:54:06,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:54:07,183 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 00:54:07,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:54:07,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311783387] [2022-01-19 00:54:07,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311783387] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:54:07,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:54:07,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:54:07,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388908993] [2022-01-19 00:54:07,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:54:07,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:54:07,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:54:07,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:54:07,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:54:07,186 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:54:07,187 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 967 places, 732 transitions, 11520 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:54:07,187 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:54:07,187 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:54:07,187 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:54:20,864 INFO L129 PetriNetUnfolder]: 5139/16460 cut-off events. [2022-01-19 00:54:20,864 INFO L130 PetriNetUnfolder]: For 1678712/1678755 co-relation queries the response was YES. [2022-01-19 00:54:21,431 INFO L84 FinitePrefix]: Finished finitePrefix Result has 176040 conditions, 16460 events. 5139/16460 cut-off events. For 1678712/1678755 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 184060 event pairs, 3548 based on Foata normal form. 7/16005 useless extension candidates. Maximal degree in co-relation 175599. Up to 4788 conditions per place. [2022-01-19 00:54:21,518 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 911 selfloop transitions, 33 changer transitions 72/1103 dead transitions. [2022-01-19 00:54:21,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 989 places, 1103 transitions, 24566 flow [2022-01-19 00:54:21,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-19 00:54:21,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-01-19 00:54:21,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 6102 transitions. [2022-01-19 00:54:21,521 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6541595197255574 [2022-01-19 00:54:21,521 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 6102 transitions. [2022-01-19 00:54:21,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 6102 transitions. [2022-01-19 00:54:21,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:54:21,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 6102 transitions. [2022-01-19 00:54:21,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 115.13207547169812) internal successors, (6102), 53 states have internal predecessors, (6102), 0 states have call successors, (0), 0 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 00:54:21,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 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 00:54:21,530 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 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 00:54:21,530 INFO L186 Difference]: Start difference. First operand has 967 places, 732 transitions, 11520 flow. Second operand 53 states and 6102 transitions. [2022-01-19 00:54:21,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 989 places, 1103 transitions, 24566 flow [2022-01-19 00:54:31,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 955 places, 1103 transitions, 23386 flow, removed 542 selfloop flow, removed 34 redundant places. [2022-01-19 00:54:31,234 INFO L242 Difference]: Finished difference. Result has 1005 places, 746 transitions, 11731 flow [2022-01-19 00:54:31,234 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=10902, PETRI_DIFFERENCE_MINUEND_PLACES=903, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=699, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=11731, PETRI_PLACES=1005, PETRI_TRANSITIONS=746} [2022-01-19 00:54:31,235 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 846 predicate places. [2022-01-19 00:54:31,235 INFO L470 AbstractCegarLoop]: Abstraction has has 1005 places, 746 transitions, 11731 flow [2022-01-19 00:54:31,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:54:31,235 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:54:31,235 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:54:31,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-19 00:54:31,235 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:54:31,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:54:31,235 INFO L85 PathProgramCache]: Analyzing trace with hash 2114988691, now seen corresponding path program 28 times [2022-01-19 00:54:31,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:54:31,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848530823] [2022-01-19 00:54:31,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:54:31,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:54:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:54:31,627 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 00:54:31,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:54:31,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848530823] [2022-01-19 00:54:31,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848530823] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:54:31,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:54:31,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:54:31,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156815991] [2022-01-19 00:54:31,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:54:31,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:54:31,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:54:31,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:54:31,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:54:31,630 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:54:31,631 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1005 places, 746 transitions, 11731 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:54:31,631 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:54:31,631 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:54:31,631 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:54:45,318 INFO L129 PetriNetUnfolder]: 5150/17122 cut-off events. [2022-01-19 00:54:45,319 INFO L130 PetriNetUnfolder]: For 1908633/1908686 co-relation queries the response was YES. [2022-01-19 00:54:45,899 INFO L84 FinitePrefix]: Finished finitePrefix Result has 184007 conditions, 17122 events. 5150/17122 cut-off events. For 1908633/1908686 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 195332 event pairs, 2373 based on Foata normal form. 20/16780 useless extension candidates. Maximal degree in co-relation 183545. Up to 7619 conditions per place. [2022-01-19 00:54:45,989 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 920 selfloop transitions, 89 changer transitions 109/1205 dead transitions. [2022-01-19 00:54:45,989 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1027 places, 1205 transitions, 25043 flow [2022-01-19 00:54:45,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-19 00:54:45,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2022-01-19 00:54:45,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 6681 transitions. [2022-01-19 00:54:45,992 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6433936825885979 [2022-01-19 00:54:45,992 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 6681 transitions. [2022-01-19 00:54:45,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 6681 transitions. [2022-01-19 00:54:45,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:54:45,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 6681 transitions. [2022-01-19 00:54:45,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 113.23728813559322) internal successors, (6681), 59 states have internal predecessors, (6681), 0 states have call successors, (0), 0 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 00:54:46,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 176.0) internal successors, (10560), 60 states have internal predecessors, (10560), 0 states have call successors, (0), 0 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 00:54:46,002 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 176.0) internal successors, (10560), 60 states have internal predecessors, (10560), 0 states have call successors, (0), 0 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 00:54:46,002 INFO L186 Difference]: Start difference. First operand has 1005 places, 746 transitions, 11731 flow. Second operand 59 states and 6681 transitions. [2022-01-19 00:54:46,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1027 places, 1205 transitions, 25043 flow [2022-01-19 00:54:58,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 989 places, 1205 transitions, 24038 flow, removed 491 selfloop flow, removed 38 redundant places. [2022-01-19 00:54:58,389 INFO L242 Difference]: Finished difference. Result has 1035 places, 747 transitions, 11665 flow [2022-01-19 00:54:58,390 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=11264, PETRI_DIFFERENCE_MINUEND_PLACES=931, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=746, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=657, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=11665, PETRI_PLACES=1035, PETRI_TRANSITIONS=747} [2022-01-19 00:54:58,390 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 876 predicate places. [2022-01-19 00:54:58,390 INFO L470 AbstractCegarLoop]: Abstraction has has 1035 places, 747 transitions, 11665 flow [2022-01-19 00:54:58,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:54:58,391 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:54:58,391 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:54:58,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-19 00:54:58,391 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:54:58,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:54:58,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1629291401, now seen corresponding path program 29 times [2022-01-19 00:54:58,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:54:58,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310014531] [2022-01-19 00:54:58,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:54:58,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:54:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:54:58,741 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 00:54:58,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:54:58,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310014531] [2022-01-19 00:54:58,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310014531] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:54:58,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:54:58,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:54:58,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055757548] [2022-01-19 00:54:58,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:54:58,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:54:58,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:54:58,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:54:58,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:54:58,743 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:54:58,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1035 places, 747 transitions, 11665 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:54:58,744 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:54:58,744 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:54:58,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:55:11,476 INFO L129 PetriNetUnfolder]: 5233/17523 cut-off events. [2022-01-19 00:55:11,476 INFO L130 PetriNetUnfolder]: For 1713378/1713426 co-relation queries the response was YES. [2022-01-19 00:55:12,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181070 conditions, 17523 events. 5233/17523 cut-off events. For 1713378/1713426 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 201076 event pairs, 2408 based on Foata normal form. 20/17154 useless extension candidates. Maximal degree in co-relation 180598. Up to 7619 conditions per place. [2022-01-19 00:55:12,096 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 901 selfloop transitions, 83 changer transitions 46/1117 dead transitions. [2022-01-19 00:55:12,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1025 places, 1117 transitions, 22940 flow [2022-01-19 00:55:12,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 00:55:12,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 00:55:12,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4061 transitions. [2022-01-19 00:55:12,098 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6592532467532467 [2022-01-19 00:55:12,098 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4061 transitions. [2022-01-19 00:55:12,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4061 transitions. [2022-01-19 00:55:12,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:55:12,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4061 transitions. [2022-01-19 00:55:12,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 116.02857142857142) internal successors, (4061), 35 states have internal predecessors, (4061), 0 states have call successors, (0), 0 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 00:55:12,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:55:12,104 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 00:55:12,104 INFO L186 Difference]: Start difference. First operand has 1035 places, 747 transitions, 11665 flow. Second operand 35 states and 4061 transitions. [2022-01-19 00:55:12,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1025 places, 1117 transitions, 22940 flow [2022-01-19 00:55:22,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 974 places, 1117 transitions, 21814 flow, removed 427 selfloop flow, removed 51 redundant places. [2022-01-19 00:55:22,539 INFO L242 Difference]: Finished difference. Result has 1001 places, 772 transitions, 12683 flow [2022-01-19 00:55:22,540 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=11339, PETRI_DIFFERENCE_MINUEND_PLACES=940, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=671, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=12683, PETRI_PLACES=1001, PETRI_TRANSITIONS=772} [2022-01-19 00:55:22,540 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 842 predicate places. [2022-01-19 00:55:22,540 INFO L470 AbstractCegarLoop]: Abstraction has has 1001 places, 772 transitions, 12683 flow [2022-01-19 00:55:22,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:55:22,540 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:55:22,540 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:55:22,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-19 00:55:22,541 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:55:22,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:55:22,541 INFO L85 PathProgramCache]: Analyzing trace with hash 117147207, now seen corresponding path program 30 times [2022-01-19 00:55:22,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:55:22,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956353907] [2022-01-19 00:55:22,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:55:22,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:55:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:55:22,899 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 00:55:22,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:55:22,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956353907] [2022-01-19 00:55:22,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956353907] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:55:22,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:55:22,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:55:22,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312333405] [2022-01-19 00:55:22,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:55:22,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:55:22,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:55:22,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:55:22,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:55:22,901 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:55:22,902 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1001 places, 772 transitions, 12683 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:55:22,902 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:55:22,902 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:55:22,902 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:55:36,841 INFO L129 PetriNetUnfolder]: 5351/17693 cut-off events. [2022-01-19 00:55:36,841 INFO L130 PetriNetUnfolder]: For 1752627/1752674 co-relation queries the response was YES. [2022-01-19 00:55:37,414 INFO L84 FinitePrefix]: Finished finitePrefix Result has 184854 conditions, 17693 events. 5351/17693 cut-off events. For 1752627/1752674 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 202741 event pairs, 2590 based on Foata normal form. 20/17334 useless extension candidates. Maximal degree in co-relation 184397. Up to 7619 conditions per place. [2022-01-19 00:55:37,505 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 925 selfloop transitions, 80 changer transitions 93/1185 dead transitions. [2022-01-19 00:55:37,505 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1041 places, 1185 transitions, 26165 flow [2022-01-19 00:55:37,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-19 00:55:37,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-01-19 00:55:37,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 6375 transitions. [2022-01-19 00:55:37,508 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6468141233766234 [2022-01-19 00:55:37,508 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 6375 transitions. [2022-01-19 00:55:37,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 6375 transitions. [2022-01-19 00:55:37,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:55:37,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 6375 transitions. [2022-01-19 00:55:37,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 113.83928571428571) internal successors, (6375), 56 states have internal predecessors, (6375), 0 states have call successors, (0), 0 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 00:55:37,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 176.0) internal successors, (10032), 57 states have internal predecessors, (10032), 0 states have call successors, (0), 0 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 00:55:37,517 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 176.0) internal successors, (10032), 57 states have internal predecessors, (10032), 0 states have call successors, (0), 0 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 00:55:37,517 INFO L186 Difference]: Start difference. First operand has 1001 places, 772 transitions, 12683 flow. Second operand 56 states and 6375 transitions. [2022-01-19 00:55:37,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1041 places, 1185 transitions, 26165 flow [2022-01-19 00:55:49,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1020 places, 1185 transitions, 25035 flow, removed 504 selfloop flow, removed 21 redundant places. [2022-01-19 00:55:49,975 INFO L242 Difference]: Finished difference. Result has 1067 places, 782 transitions, 12734 flow [2022-01-19 00:55:49,976 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=11951, PETRI_DIFFERENCE_MINUEND_PLACES=965, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=772, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=695, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=12734, PETRI_PLACES=1067, PETRI_TRANSITIONS=782} [2022-01-19 00:55:49,976 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 908 predicate places. [2022-01-19 00:55:49,976 INFO L470 AbstractCegarLoop]: Abstraction has has 1067 places, 782 transitions, 12734 flow [2022-01-19 00:55:49,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:55:49,977 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:55:49,977 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:55:49,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-19 00:55:49,977 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:55:49,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:55:49,977 INFO L85 PathProgramCache]: Analyzing trace with hash 95620121, now seen corresponding path program 31 times [2022-01-19 00:55:49,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:55:49,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193343349] [2022-01-19 00:55:49,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:55:49,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:55:49,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:55:50,373 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 00:55:50,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:55:50,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193343349] [2022-01-19 00:55:50,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193343349] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:55:50,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:55:50,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:55:50,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545252899] [2022-01-19 00:55:50,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:55:50,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:55:50,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:55:50,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:55:50,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:55:50,375 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:55:50,376 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1067 places, 782 transitions, 12734 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:55:50,376 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:55:50,376 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:55:50,376 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:56:05,613 INFO L129 PetriNetUnfolder]: 5342/17780 cut-off events. [2022-01-19 00:56:05,613 INFO L130 PetriNetUnfolder]: For 1921559/1921604 co-relation queries the response was YES. [2022-01-19 00:56:06,477 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190555 conditions, 17780 events. 5342/17780 cut-off events. For 1921559/1921604 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 203883 event pairs, 2559 based on Foata normal form. 13/17387 useless extension candidates. Maximal degree in co-relation 190066. Up to 7619 conditions per place. [2022-01-19 00:56:06,578 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 989 selfloop transitions, 88 changer transitions 100/1264 dead transitions. [2022-01-19 00:56:06,578 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1082 places, 1264 transitions, 28294 flow [2022-01-19 00:56:06,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-19 00:56:06,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-01-19 00:56:06,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 6348 transitions. [2022-01-19 00:56:06,581 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6440746753246753 [2022-01-19 00:56:06,582 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 6348 transitions. [2022-01-19 00:56:06,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 6348 transitions. [2022-01-19 00:56:06,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:56:06,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 6348 transitions. [2022-01-19 00:56:06,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 113.35714285714286) internal successors, (6348), 56 states have internal predecessors, (6348), 0 states have call successors, (0), 0 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 00:56:06,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 176.0) internal successors, (10032), 57 states have internal predecessors, (10032), 0 states have call successors, (0), 0 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 00:56:06,591 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 176.0) internal successors, (10032), 57 states have internal predecessors, (10032), 0 states have call successors, (0), 0 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 00:56:06,591 INFO L186 Difference]: Start difference. First operand has 1067 places, 782 transitions, 12734 flow. Second operand 56 states and 6348 transitions. [2022-01-19 00:56:06,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1082 places, 1264 transitions, 28294 flow [2022-01-19 00:56:20,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1035 places, 1264 transitions, 27196 flow, removed 481 selfloop flow, removed 47 redundant places. [2022-01-19 00:56:20,467 INFO L242 Difference]: Finished difference. Result has 1083 places, 790 transitions, 13187 flow [2022-01-19 00:56:20,467 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=12468, PETRI_DIFFERENCE_MINUEND_PLACES=980, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=782, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=694, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=13187, PETRI_PLACES=1083, PETRI_TRANSITIONS=790} [2022-01-19 00:56:20,467 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 924 predicate places. [2022-01-19 00:56:20,468 INFO L470 AbstractCegarLoop]: Abstraction has has 1083 places, 790 transitions, 13187 flow [2022-01-19 00:56:20,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:56:20,468 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:56:20,468 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:56:20,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-19 00:56:20,468 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:56:20,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:56:20,468 INFO L85 PathProgramCache]: Analyzing trace with hash 557987441, now seen corresponding path program 32 times [2022-01-19 00:56:20,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:56:20,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360041037] [2022-01-19 00:56:20,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:56:20,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:56:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:56:20,804 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 00:56:20,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:56:20,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360041037] [2022-01-19 00:56:20,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360041037] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:56:20,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:56:20,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:56:20,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101947448] [2022-01-19 00:56:20,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:56:20,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:56:20,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:56:20,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:56:20,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:56:20,806 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:56:20,807 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1083 places, 790 transitions, 13187 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:56:20,807 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:56:20,807 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:56:20,807 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:56:34,692 INFO L129 PetriNetUnfolder]: 5343/17748 cut-off events. [2022-01-19 00:56:34,692 INFO L130 PetriNetUnfolder]: For 1798535/1798600 co-relation queries the response was YES. [2022-01-19 00:56:35,280 INFO L84 FinitePrefix]: Finished finitePrefix Result has 186239 conditions, 17748 events. 5343/17748 cut-off events. For 1798535/1798600 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 203418 event pairs, 2679 based on Foata normal form. 20/17385 useless extension candidates. Maximal degree in co-relation 185742. Up to 7619 conditions per place. [2022-01-19 00:56:35,369 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 951 selfloop transitions, 65 changer transitions 96/1199 dead transitions. [2022-01-19 00:56:35,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1098 places, 1199 transitions, 26299 flow [2022-01-19 00:56:35,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-19 00:56:35,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-01-19 00:56:35,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 6391 transitions. [2022-01-19 00:56:35,373 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6484375 [2022-01-19 00:56:35,373 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 6391 transitions. [2022-01-19 00:56:35,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 6391 transitions. [2022-01-19 00:56:35,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:56:35,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 6391 transitions. [2022-01-19 00:56:35,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 114.125) internal successors, (6391), 56 states have internal predecessors, (6391), 0 states have call successors, (0), 0 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 00:56:35,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 176.0) internal successors, (10032), 57 states have internal predecessors, (10032), 0 states have call successors, (0), 0 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 00:56:35,382 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 176.0) internal successors, (10032), 57 states have internal predecessors, (10032), 0 states have call successors, (0), 0 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 00:56:35,382 INFO L186 Difference]: Start difference. First operand has 1083 places, 790 transitions, 13187 flow. Second operand 56 states and 6391 transitions. [2022-01-19 00:56:35,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1098 places, 1199 transitions, 26299 flow [2022-01-19 00:56:48,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1050 places, 1199 transitions, 25388 flow, removed 387 selfloop flow, removed 48 redundant places. [2022-01-19 00:56:48,422 INFO L242 Difference]: Finished difference. Result has 1097 places, 796 transitions, 13382 flow [2022-01-19 00:56:48,423 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=12898, PETRI_DIFFERENCE_MINUEND_PLACES=995, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=790, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=725, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=13382, PETRI_PLACES=1097, PETRI_TRANSITIONS=796} [2022-01-19 00:56:48,423 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 938 predicate places. [2022-01-19 00:56:48,423 INFO L470 AbstractCegarLoop]: Abstraction has has 1097 places, 796 transitions, 13382 flow [2022-01-19 00:56:48,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:56:48,423 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:56:48,424 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:56:48,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-19 00:56:48,424 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:56:48,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:56:48,424 INFO L85 PathProgramCache]: Analyzing trace with hash 2040517893, now seen corresponding path program 33 times [2022-01-19 00:56:48,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:56:48,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415662051] [2022-01-19 00:56:48,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:56:48,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:56:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:56:48,807 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 00:56:48,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:56:48,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415662051] [2022-01-19 00:56:48,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415662051] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:56:48,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:56:48,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:56:48,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393594574] [2022-01-19 00:56:48,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:56:48,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:56:48,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:56:48,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:56:48,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:56:48,809 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:56:48,810 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1097 places, 796 transitions, 13382 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:56:48,810 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:56:48,810 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:56:48,810 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:57:03,464 INFO L129 PetriNetUnfolder]: 5398/18230 cut-off events. [2022-01-19 00:57:03,465 INFO L130 PetriNetUnfolder]: For 1922895/1922948 co-relation queries the response was YES. [2022-01-19 00:57:04,178 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193058 conditions, 18230 events. 5398/18230 cut-off events. For 1922895/1922948 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 211242 event pairs, 2334 based on Foata normal form. 20/17863 useless extension candidates. Maximal degree in co-relation 192555. Up to 7619 conditions per place. [2022-01-19 00:57:04,274 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 957 selfloop transitions, 80 changer transitions 78/1202 dead transitions. [2022-01-19 00:57:04,274 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1109 places, 1202 transitions, 25177 flow [2022-01-19 00:57:04,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-19 00:57:04,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-01-19 00:57:04,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 6049 transitions. [2022-01-19 00:57:04,277 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6484777015437393 [2022-01-19 00:57:04,277 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 6049 transitions. [2022-01-19 00:57:04,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 6049 transitions. [2022-01-19 00:57:04,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:57:04,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 6049 transitions. [2022-01-19 00:57:04,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 114.13207547169812) internal successors, (6049), 53 states have internal predecessors, (6049), 0 states have call successors, (0), 0 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 00:57:04,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 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 00:57:04,285 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 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 00:57:04,285 INFO L186 Difference]: Start difference. First operand has 1097 places, 796 transitions, 13382 flow. Second operand 53 states and 6049 transitions. [2022-01-19 00:57:04,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1109 places, 1202 transitions, 25177 flow [2022-01-19 00:57:18,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1063 places, 1202 transitions, 24526 flow, removed 251 selfloop flow, removed 46 redundant places. [2022-01-19 00:57:18,352 INFO L242 Difference]: Finished difference. Result has 1107 places, 804 transitions, 13767 flow [2022-01-19 00:57:18,353 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=13092, PETRI_DIFFERENCE_MINUEND_PLACES=1011, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=796, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=716, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=13767, PETRI_PLACES=1107, PETRI_TRANSITIONS=804} [2022-01-19 00:57:18,353 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 948 predicate places. [2022-01-19 00:57:18,353 INFO L470 AbstractCegarLoop]: Abstraction has has 1107 places, 804 transitions, 13767 flow [2022-01-19 00:57:18,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:57:18,353 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:57:18,353 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:57:18,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-19 00:57:18,354 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:57:18,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:57:18,354 INFO L85 PathProgramCache]: Analyzing trace with hash -480236793, now seen corresponding path program 34 times [2022-01-19 00:57:18,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:57:18,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824785000] [2022-01-19 00:57:18,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:57:18,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:57:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:57:18,726 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 00:57:18,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:57:18,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824785000] [2022-01-19 00:57:18,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824785000] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:57:18,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:57:18,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:57:18,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450634875] [2022-01-19 00:57:18,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:57:18,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:57:18,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:57:18,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:57:18,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:57:18,728 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:57:18,729 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1107 places, 804 transitions, 13767 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:57:18,729 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:57:18,729 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:57:18,729 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:57:31,778 INFO L129 PetriNetUnfolder]: 5403/18003 cut-off events. [2022-01-19 00:57:31,778 INFO L130 PetriNetUnfolder]: For 1832955/1832999 co-relation queries the response was YES. [2022-01-19 00:57:32,417 INFO L84 FinitePrefix]: Finished finitePrefix Result has 189754 conditions, 18003 events. 5403/18003 cut-off events. For 1832955/1832999 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 206950 event pairs, 2612 based on Foata normal form. 13/17604 useless extension candidates. Maximal degree in co-relation 189247. Up to 7619 conditions per place. [2022-01-19 00:57:32,511 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 935 selfloop transitions, 111 changer transitions 46/1179 dead transitions. [2022-01-19 00:57:32,511 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1108 places, 1179 transitions, 25862 flow [2022-01-19 00:57:32,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:57:32,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:57:32,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 4364 transitions. [2022-01-19 00:57:32,513 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.652511961722488 [2022-01-19 00:57:32,513 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 4364 transitions. [2022-01-19 00:57:32,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 4364 transitions. [2022-01-19 00:57:32,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:57:32,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 4364 transitions. [2022-01-19 00:57:32,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 114.84210526315789) internal successors, (4364), 38 states have internal predecessors, (4364), 0 states have call successors, (0), 0 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 00:57:32,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 176.0) internal successors, (6864), 39 states have internal predecessors, (6864), 0 states have call successors, (0), 0 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 00:57:32,519 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 176.0) internal successors, (6864), 39 states have internal predecessors, (6864), 0 states have call successors, (0), 0 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 00:57:32,519 INFO L186 Difference]: Start difference. First operand has 1107 places, 804 transitions, 13767 flow. Second operand 38 states and 4364 transitions. [2022-01-19 00:57:32,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1108 places, 1179 transitions, 25862 flow [2022-01-19 00:57:46,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1064 places, 1179 transitions, 24956 flow, removed 387 selfloop flow, removed 44 redundant places. [2022-01-19 00:57:46,179 INFO L242 Difference]: Finished difference. Result has 1084 places, 826 transitions, 14850 flow [2022-01-19 00:57:46,179 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=13510, PETRI_DIFFERENCE_MINUEND_PLACES=1027, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=804, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=704, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=14850, PETRI_PLACES=1084, PETRI_TRANSITIONS=826} [2022-01-19 00:57:46,180 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 925 predicate places. [2022-01-19 00:57:46,180 INFO L470 AbstractCegarLoop]: Abstraction has has 1084 places, 826 transitions, 14850 flow [2022-01-19 00:57:46,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:57:46,180 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:57:46,180 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:57:46,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-19 00:57:46,180 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:57:46,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:57:46,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1383232231, now seen corresponding path program 35 times [2022-01-19 00:57:46,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:57:46,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779319173] [2022-01-19 00:57:46,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:57:46,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:57:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:57:46,527 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 00:57:46,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:57:46,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779319173] [2022-01-19 00:57:46,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779319173] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:57:46,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:57:46,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:57:46,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083957833] [2022-01-19 00:57:46,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:57:46,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:57:46,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:57:46,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:57:46,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:57:46,530 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:57:46,531 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1084 places, 826 transitions, 14850 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:57:46,531 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:57:46,531 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:57:46,531 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:58:00,928 INFO L129 PetriNetUnfolder]: 5466/18437 cut-off events. [2022-01-19 00:58:00,928 INFO L130 PetriNetUnfolder]: For 1833729/1833777 co-relation queries the response was YES. [2022-01-19 00:58:01,848 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192027 conditions, 18437 events. 5466/18437 cut-off events. For 1833729/1833777 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 214001 event pairs, 2311 based on Foata normal form. 20/18070 useless extension candidates. Maximal degree in co-relation 191536. Up to 7619 conditions per place. [2022-01-19 00:58:01,947 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 978 selfloop transitions, 90 changer transitions 78/1233 dead transitions. [2022-01-19 00:58:01,947 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1118 places, 1233 transitions, 27444 flow [2022-01-19 00:58:01,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-19 00:58:01,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-01-19 00:58:01,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 6035 transitions. [2022-01-19 00:58:01,950 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6469768439108061 [2022-01-19 00:58:01,950 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 6035 transitions. [2022-01-19 00:58:01,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 6035 transitions. [2022-01-19 00:58:01,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:58:01,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 6035 transitions. [2022-01-19 00:58:01,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 113.86792452830188) internal successors, (6035), 53 states have internal predecessors, (6035), 0 states have call successors, (0), 0 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 00:58:01,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 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 00:58:01,959 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 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 00:58:01,959 INFO L186 Difference]: Start difference. First operand has 1084 places, 826 transitions, 14850 flow. Second operand 53 states and 6035 transitions. [2022-01-19 00:58:01,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1118 places, 1233 transitions, 27444 flow [2022-01-19 00:58:16,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1096 places, 1233 transitions, 26551 flow, removed 378 selfloop flow, removed 22 redundant places. [2022-01-19 00:58:16,153 INFO L242 Difference]: Finished difference. Result has 1139 places, 834 transitions, 14877 flow [2022-01-19 00:58:16,153 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=14171, PETRI_DIFFERENCE_MINUEND_PLACES=1044, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=826, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=737, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=14877, PETRI_PLACES=1139, PETRI_TRANSITIONS=834} [2022-01-19 00:58:16,154 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 980 predicate places. [2022-01-19 00:58:16,154 INFO L470 AbstractCegarLoop]: Abstraction has has 1139 places, 834 transitions, 14877 flow [2022-01-19 00:58:16,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:58:16,154 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:58:16,154 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:58:16,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-19 00:58:16,154 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:58:16,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:58:16,155 INFO L85 PathProgramCache]: Analyzing trace with hash -593051873, now seen corresponding path program 36 times [2022-01-19 00:58:16,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:58:16,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123102482] [2022-01-19 00:58:16,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:58:16,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:58:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:58:16,525 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 00:58:16,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:58:16,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123102482] [2022-01-19 00:58:16,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123102482] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:58:16,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:58:16,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:58:16,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857252933] [2022-01-19 00:58:16,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:58:16,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:58:16,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:58:16,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:58:16,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:58:16,527 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:58:16,528 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1139 places, 834 transitions, 14877 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:58:16,528 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:58:16,528 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:58:16,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:58:31,513 INFO L129 PetriNetUnfolder]: 5488/18548 cut-off events. [2022-01-19 00:58:31,513 INFO L130 PetriNetUnfolder]: For 1885970/1886024 co-relation queries the response was YES. [2022-01-19 00:58:32,587 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194820 conditions, 18548 events. 5488/18548 cut-off events. For 1885970/1886024 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 215673 event pairs, 2246 based on Foata normal form. 20/18180 useless extension candidates. Maximal degree in co-relation 194301. Up to 7619 conditions per place. [2022-01-19 00:58:32,685 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 981 selfloop transitions, 110 changer transitions 79/1257 dead transitions. [2022-01-19 00:58:32,685 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1155 places, 1257 transitions, 27974 flow [2022-01-19 00:58:32,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-19 00:58:32,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-01-19 00:58:32,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 6033 transitions. [2022-01-19 00:58:32,688 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.64676243567753 [2022-01-19 00:58:32,688 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 6033 transitions. [2022-01-19 00:58:32,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 6033 transitions. [2022-01-19 00:58:32,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:58:32,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 6033 transitions. [2022-01-19 00:58:32,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 113.83018867924528) internal successors, (6033), 53 states have internal predecessors, (6033), 0 states have call successors, (0), 0 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 00:58:32,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 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 00:58:32,697 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 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 00:58:32,697 INFO L186 Difference]: Start difference. First operand has 1139 places, 834 transitions, 14877 flow. Second operand 53 states and 6033 transitions. [2022-01-19 00:58:32,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1155 places, 1257 transitions, 27974 flow [2022-01-19 00:58:48,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1112 places, 1257 transitions, 27093 flow, removed 364 selfloop flow, removed 43 redundant places. [2022-01-19 00:58:48,118 INFO L242 Difference]: Finished difference. Result has 1150 places, 838 transitions, 15137 flow [2022-01-19 00:58:48,118 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=14606, PETRI_DIFFERENCE_MINUEND_PLACES=1060, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=834, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=726, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=15137, PETRI_PLACES=1150, PETRI_TRANSITIONS=838} [2022-01-19 00:58:48,119 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 991 predicate places. [2022-01-19 00:58:48,119 INFO L470 AbstractCegarLoop]: Abstraction has has 1150 places, 838 transitions, 15137 flow [2022-01-19 00:58:48,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:58:48,119 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:58:48,119 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:58:48,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-19 00:58:48,119 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:58:48,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:58:48,120 INFO L85 PathProgramCache]: Analyzing trace with hash 500731013, now seen corresponding path program 37 times [2022-01-19 00:58:48,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:58:48,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338176651] [2022-01-19 00:58:48,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:58:48,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:58:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:58:48,492 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 00:58:48,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:58:48,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338176651] [2022-01-19 00:58:48,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338176651] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:58:48,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:58:48,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:58:48,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958844248] [2022-01-19 00:58:48,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:58:48,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:58:48,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:58:48,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:58:48,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:58:48,494 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:58:48,495 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1150 places, 838 transitions, 15137 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:58:48,495 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:58:48,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:58:48,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:59:03,457 INFO L129 PetriNetUnfolder]: 5484/18545 cut-off events. [2022-01-19 00:59:03,457 INFO L130 PetriNetUnfolder]: For 1864981/1865034 co-relation queries the response was YES. [2022-01-19 00:59:04,382 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194344 conditions, 18545 events. 5484/18545 cut-off events. For 1864981/1865034 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 215542 event pairs, 2264 based on Foata normal form. 20/18178 useless extension candidates. Maximal degree in co-relation 193822. Up to 7619 conditions per place. [2022-01-19 00:59:04,480 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 986 selfloop transitions, 100 changer transitions 79/1252 dead transitions. [2022-01-19 00:59:04,480 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1166 places, 1252 transitions, 28378 flow [2022-01-19 00:59:04,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-19 00:59:04,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-01-19 00:59:04,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 6034 transitions. [2022-01-19 00:59:04,483 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6468696397941681 [2022-01-19 00:59:04,483 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 6034 transitions. [2022-01-19 00:59:04,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 6034 transitions. [2022-01-19 00:59:04,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:59:04,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 6034 transitions. [2022-01-19 00:59:04,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 113.84905660377359) internal successors, (6034), 53 states have internal predecessors, (6034), 0 states have call successors, (0), 0 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 00:59:04,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 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 00:59:04,491 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 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 00:59:04,491 INFO L186 Difference]: Start difference. First operand has 1150 places, 838 transitions, 15137 flow. Second operand 53 states and 6034 transitions. [2022-01-19 00:59:04,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1166 places, 1252 transitions, 28378 flow [2022-01-19 00:59:19,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1124 places, 1252 transitions, 27626 flow, removed 291 selfloop flow, removed 42 redundant places. [2022-01-19 00:59:19,553 INFO L242 Difference]: Finished difference. Result has 1165 places, 844 transitions, 15495 flow [2022-01-19 00:59:19,554 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=14877, PETRI_DIFFERENCE_MINUEND_PLACES=1072, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=838, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=739, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=15495, PETRI_PLACES=1165, PETRI_TRANSITIONS=844} [2022-01-19 00:59:19,554 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 1006 predicate places. [2022-01-19 00:59:19,554 INFO L470 AbstractCegarLoop]: Abstraction has has 1165 places, 844 transitions, 15495 flow [2022-01-19 00:59:19,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:59:19,555 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:59:19,555 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:59:19,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-19 00:59:19,555 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:59:19,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:59:19,555 INFO L85 PathProgramCache]: Analyzing trace with hash 246536957, now seen corresponding path program 38 times [2022-01-19 00:59:19,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:59:19,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29067391] [2022-01-19 00:59:19,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:59:19,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:59:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:59:19,929 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 00:59:19,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:59:19,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29067391] [2022-01-19 00:59:19,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29067391] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:59:19,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:59:19,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:59:19,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062012905] [2022-01-19 00:59:19,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:59:19,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:59:19,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:59:19,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:59:19,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:59:19,931 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:59:19,932 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1165 places, 844 transitions, 15495 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:59:19,932 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:59:19,932 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:59:19,932 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:59:34,790 INFO L129 PetriNetUnfolder]: 5470/18282 cut-off events. [2022-01-19 00:59:34,790 INFO L130 PetriNetUnfolder]: For 1877344/1877383 co-relation queries the response was YES. [2022-01-19 00:59:35,642 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194233 conditions, 18282 events. 5470/18282 cut-off events. For 1877344/1877383 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 210975 event pairs, 2621 based on Foata normal form. 13/17881 useless extension candidates. Maximal degree in co-relation 193703. Up to 7619 conditions per place. [2022-01-19 00:59:35,750 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 957 selfloop transitions, 121 changer transitions 72/1237 dead transitions. [2022-01-19 00:59:35,750 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1178 places, 1237 transitions, 27976 flow [2022-01-19 00:59:35,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-19 00:59:35,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-01-19 00:59:35,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 5685 transitions. [2022-01-19 00:59:35,753 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6460227272727272 [2022-01-19 00:59:35,753 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 5685 transitions. [2022-01-19 00:59:35,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 5685 transitions. [2022-01-19 00:59:35,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:59:35,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 5685 transitions. [2022-01-19 00:59:35,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 113.7) internal successors, (5685), 50 states have internal predecessors, (5685), 0 states have call successors, (0), 0 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 00:59:35,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 176.0) internal successors, (8976), 51 states have internal predecessors, (8976), 0 states have call successors, (0), 0 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 00:59:35,761 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 176.0) internal successors, (8976), 51 states have internal predecessors, (8976), 0 states have call successors, (0), 0 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 00:59:35,762 INFO L186 Difference]: Start difference. First operand has 1165 places, 844 transitions, 15495 flow. Second operand 50 states and 5685 transitions. [2022-01-19 00:59:35,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1178 places, 1237 transitions, 27976 flow [2022-01-19 00:59:50,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1136 places, 1237 transitions, 27271 flow, removed 276 selfloop flow, removed 42 redundant places. [2022-01-19 00:59:50,243 INFO L242 Difference]: Finished difference. Result has 1169 places, 851 transitions, 15910 flow [2022-01-19 00:59:50,243 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=15229, PETRI_DIFFERENCE_MINUEND_PLACES=1087, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=844, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=728, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=15910, PETRI_PLACES=1169, PETRI_TRANSITIONS=851} [2022-01-19 00:59:50,244 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 1010 predicate places. [2022-01-19 00:59:50,244 INFO L470 AbstractCegarLoop]: Abstraction has has 1169 places, 851 transitions, 15910 flow [2022-01-19 00:59:50,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:59:50,244 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:59:50,244 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:59:50,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-01-19 00:59:50,244 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:59:50,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:59:50,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1126981235, now seen corresponding path program 39 times [2022-01-19 00:59:50,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:59:50,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539797158] [2022-01-19 00:59:50,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:59:50,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:59:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:59:50,601 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 00:59:50,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:59:50,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539797158] [2022-01-19 00:59:50,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539797158] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:59:50,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:59:50,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 00:59:50,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864146268] [2022-01-19 00:59:50,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:59:50,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 00:59:50,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:59:50,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 00:59:50,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 00:59:50,604 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 00:59:50,605 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1169 places, 851 transitions, 15910 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 00:59:50,605 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:59:50,605 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 00:59:50,605 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand