./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cfa53b3a6eade068c4346d28766037c8d26fae61c62dd4c8f6fc2f9d68567d2c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 13:42:38,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 13:42:38,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 13:42:38,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 13:42:38,576 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 13:42:38,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 13:42:38,578 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 13:42:38,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 13:42:38,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 13:42:38,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 13:42:38,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 13:42:38,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 13:42:38,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 13:42:38,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 13:42:38,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 13:42:38,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 13:42:38,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 13:42:38,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 13:42:38,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 13:42:38,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 13:42:38,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 13:42:38,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 13:42:38,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 13:42:38,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 13:42:38,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 13:42:38,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 13:42:38,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 13:42:38,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 13:42:38,601 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 13:42:38,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 13:42:38,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 13:42:38,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 13:42:38,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 13:42:38,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 13:42:38,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 13:42:38,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 13:42:38,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 13:42:38,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 13:42:38,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 13:42:38,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 13:42:38,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 13:42:38,608 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 13:42:38,622 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 13:42:38,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 13:42:38,623 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 13:42:38,623 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 13:42:38,623 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 13:42:38,624 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 13:42:38,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 13:42:38,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 13:42:38,624 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 13:42:38,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 13:42:38,625 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 13:42:38,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 13:42:38,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 13:42:38,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 13:42:38,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 13:42:38,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 13:42:38,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 13:42:38,626 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 13:42:38,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 13:42:38,627 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 13:42:38,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 13:42:38,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 13:42:38,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 13:42:38,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 13:42:38,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:42:38,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 13:42:38,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 13:42:38,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 13:42:38,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 13:42:38,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 13:42:38,629 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 13:42:38,629 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 13:42:38,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 13:42:38,629 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 13:42:38,629 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfa53b3a6eade068c4346d28766037c8d26fae61c62dd4c8f6fc2f9d68567d2c [2021-12-22 13:42:38,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 13:42:38,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 13:42:38,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 13:42:38,817 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 13:42:38,817 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 13:42:38,818 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c [2021-12-22 13:42:38,860 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92837fc14/561ae7392cf04e538b856f5533ccefe3/FLAG52f4a23f5 [2021-12-22 13:42:39,244 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 13:42:39,245 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c [2021-12-22 13:42:39,265 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92837fc14/561ae7392cf04e538b856f5533ccefe3/FLAG52f4a23f5 [2021-12-22 13:42:39,653 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92837fc14/561ae7392cf04e538b856f5533ccefe3 [2021-12-22 13:42:39,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 13:42:39,655 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 13:42:39,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 13:42:39,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 13:42:39,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 13:42:39,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:42:39" (1/1) ... [2021-12-22 13:42:39,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58607aa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:42:39, skipping insertion in model container [2021-12-22 13:42:39,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:42:39" (1/1) ... [2021-12-22 13:42:39,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 13:42:39,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 13:42:39,804 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c[2303,2316] [2021-12-22 13:42:39,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:42:39,812 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 13:42:39,860 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c[2303,2316] [2021-12-22 13:42:39,864 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:42:39,872 INFO L208 MainTranslator]: Completed translation [2021-12-22 13:42:39,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:42:39 WrapperNode [2021-12-22 13:42:39,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 13:42:39,885 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 13:42:39,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 13:42:39,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 13:42:39,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:42:39" (1/1) ... [2021-12-22 13:42:39,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:42:39" (1/1) ... [2021-12-22 13:42:39,950 INFO L137 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 130 [2021-12-22 13:42:39,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 13:42:39,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 13:42:39,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 13:42:39,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 13:42:39,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:42:39" (1/1) ... [2021-12-22 13:42:39,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:42:39" (1/1) ... [2021-12-22 13:42:39,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:42:39" (1/1) ... [2021-12-22 13:42:39,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:42:39" (1/1) ... [2021-12-22 13:42:39,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:42:39" (1/1) ... [2021-12-22 13:42:39,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:42:39" (1/1) ... [2021-12-22 13:42:39,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:42:39" (1/1) ... [2021-12-22 13:42:40,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 13:42:40,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 13:42:40,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 13:42:40,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 13:42:40,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:42:39" (1/1) ... [2021-12-22 13:42:40,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:42:40,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:42:40,044 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) [2021-12-22 13:42:40,057 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 [2021-12-22 13:42:40,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 13:42:40,098 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-22 13:42:40,098 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-22 13:42:40,098 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-22 13:42:40,098 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-22 13:42:40,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 13:42:40,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 13:42:40,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 13:42:40,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 13:42:40,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 13:42:40,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 13:42:40,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 13:42:40,100 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-22 13:42:40,212 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 13:42:40,227 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 13:42:40,582 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 13:42:40,596 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 13:42:40,601 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 13:42:40,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:42:40 BoogieIcfgContainer [2021-12-22 13:42:40,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 13:42:40,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 13:42:40,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 13:42:40,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 13:42:40,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:42:39" (1/3) ... [2021-12-22 13:42:40,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f45ba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:42:40, skipping insertion in model container [2021-12-22 13:42:40,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:42:39" (2/3) ... [2021-12-22 13:42:40,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f45ba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:42:40, skipping insertion in model container [2021-12-22 13:42:40,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:42:40" (3/3) ... [2021-12-22 13:42:40,613 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-symm.wvr.c [2021-12-22 13:42:40,619 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-22 13:42:40,620 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 13:42:40,620 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 13:42:40,620 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-22 13:42:40,686 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,686 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,686 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,687 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,687 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,690 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,691 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,692 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,693 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,693 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,703 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,705 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,706 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,706 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,706 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,715 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,716 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,716 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,716 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,716 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,717 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,717 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,717 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,717 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,717 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,717 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,717 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,718 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,718 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,718 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,718 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,718 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,718 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,718 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,719 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,719 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,719 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,719 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,719 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,719 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,719 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,720 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,720 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,720 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,720 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,720 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,720 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,720 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,721 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,721 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,721 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,721 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,722 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,722 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,722 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,722 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,722 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,722 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,723 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,723 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,723 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,723 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,723 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,723 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,724 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,724 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,724 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,724 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,725 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,725 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,725 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,725 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,725 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,725 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,725 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,726 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,726 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,726 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,726 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,726 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,740 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,743 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,743 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,744 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,745 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,746 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,747 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,747 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,747 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,748 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,749 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,750 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,751 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,752 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,752 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,753 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,753 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,753 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,754 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,754 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,754 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,754 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,754 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,754 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,755 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,755 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,755 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,755 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,755 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,755 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,755 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,756 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,756 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,757 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,757 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,757 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,757 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,757 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,757 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,759 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,759 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,759 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,760 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,775 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,777 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,781 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,781 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,781 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,781 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,781 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,782 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,782 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,782 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,782 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,782 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,782 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,782 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,782 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,783 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,783 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,783 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,783 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,783 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,784 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,784 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,784 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,784 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,785 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,786 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,786 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,787 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,787 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,787 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,787 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,787 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,787 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,788 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,788 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,788 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,788 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,788 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,790 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,791 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,791 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,791 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,791 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,791 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,791 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,792 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,792 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,792 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,792 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,792 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,792 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,792 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,793 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,796 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,796 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,796 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,796 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,796 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,797 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,797 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,797 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,797 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,797 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,798 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,798 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,800 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,805 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,805 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,805 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,805 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,805 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,806 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,806 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,806 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,806 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,806 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,806 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,806 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,808 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,808 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,808 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,809 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,809 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,809 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,809 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,819 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,819 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,819 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,819 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:42:40,821 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-12-22 13:42:40,850 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 13:42:40,855 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=true, 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 [2021-12-22 13:42:40,855 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-22 13:42:40,863 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 170 places, 176 transitions, 368 flow [2021-12-22 13:42:40,913 INFO L129 PetriNetUnfolder]: 13/174 cut-off events. [2021-12-22 13:42:40,914 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-22 13:42:40,920 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. [2021-12-22 13:42:40,920 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 176 transitions, 368 flow [2021-12-22 13:42:40,924 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 165 transitions, 342 flow [2021-12-22 13:42:40,952 INFO L129 PetriNetUnfolder]: 13/164 cut-off events. [2021-12-22 13:42:40,952 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-22 13:42:40,953 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:40,953 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] [2021-12-22 13:42:40,954 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:40,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:40,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1782218821, now seen corresponding path program 1 times [2021-12-22 13:42:40,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:40,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977363873] [2021-12-22 13:42:40,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:40,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:41,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:41,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:41,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977363873] [2021-12-22 13:42:41,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977363873] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:41,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:41,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:41,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787362046] [2021-12-22 13:42:41,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:41,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:41,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:41,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:41,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:41,480 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:41,485 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) [2021-12-22 13:42:41,486 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:41,486 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:41,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:41,828 INFO L129 PetriNetUnfolder]: 107/482 cut-off events. [2021-12-22 13:42:41,828 INFO L130 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2021-12-22 13:42:41,830 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. [2021-12-22 13:42:41,833 INFO L132 encePairwiseOnDemand]: 155/176 looper letters, 81 selfloop transitions, 5 changer transitions 44/253 dead transitions. [2021-12-22 13:42:41,833 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 253 transitions, 808 flow [2021-12-22 13:42:41,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-22 13:42:41,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-12-22 13:42:41,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3478 transitions. [2021-12-22 13:42:41,850 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7904545454545454 [2021-12-22 13:42:41,850 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3478 transitions. [2021-12-22 13:42:41,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3478 transitions. [2021-12-22 13:42:41,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:41,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3478 transitions. [2021-12-22 13:42:41,867 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) [2021-12-22 13:42:41,880 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) [2021-12-22 13:42:41,882 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) [2021-12-22 13:42:41,884 INFO L186 Difference]: Start difference. First operand has 159 places, 165 transitions, 342 flow. Second operand 25 states and 3478 transitions. [2021-12-22 13:42:41,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 253 transitions, 808 flow [2021-12-22 13:42:41,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 253 transitions, 780 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-22 13:42:41,891 INFO L242 Difference]: Finished difference. Result has 201 places, 159 transitions, 405 flow [2021-12-22 13:42:41,893 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} [2021-12-22 13:42:41,895 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 42 predicate places. [2021-12-22 13:42:41,895 INFO L470 AbstractCegarLoop]: Abstraction has has 201 places, 159 transitions, 405 flow [2021-12-22 13:42:41,896 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) [2021-12-22 13:42:41,897 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:41,897 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] [2021-12-22 13:42:41,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 13:42:41,897 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:41,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:41,898 INFO L85 PathProgramCache]: Analyzing trace with hash 346921447, now seen corresponding path program 1 times [2021-12-22 13:42:41,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:41,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571576574] [2021-12-22 13:42:41,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:41,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:41,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:41,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:41,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571576574] [2021-12-22 13:42:41,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571576574] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:41,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:41,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:42:41,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687393496] [2021-12-22 13:42:41,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:41,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:42:41,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:41,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:42:41,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:42:41,954 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2021-12-22 13:42:41,955 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) [2021-12-22 13:42:41,955 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:41,955 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2021-12-22 13:42:41,955 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:42,026 INFO L129 PetriNetUnfolder]: 59/602 cut-off events. [2021-12-22 13:42:42,027 INFO L130 PetriNetUnfolder]: For 894/932 co-relation queries the response was YES. [2021-12-22 13:42:42,030 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. [2021-12-22 13:42:42,032 INFO L132 encePairwiseOnDemand]: 168/176 looper letters, 13 selfloop transitions, 5 changer transitions 0/165 dead transitions. [2021-12-22 13:42:42,032 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 165 transitions, 456 flow [2021-12-22 13:42:42,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:42:42,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-22 13:42:42,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2021-12-22 13:42:42,034 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2021-12-22 13:42:42,034 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2021-12-22 13:42:42,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2021-12-22 13:42:42,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:42,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2021-12-22 13:42:42,035 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) [2021-12-22 13:42:42,036 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) [2021-12-22 13:42:42,037 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) [2021-12-22 13:42:42,037 INFO L186 Difference]: Start difference. First operand has 201 places, 159 transitions, 405 flow. Second operand 3 states and 489 transitions. [2021-12-22 13:42:42,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 165 transitions, 456 flow [2021-12-22 13:42:42,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 165 transitions, 437 flow, removed 9 selfloop flow, removed 10 redundant places. [2021-12-22 13:42:42,044 INFO L242 Difference]: Finished difference. Result has 174 places, 162 transitions, 424 flow [2021-12-22 13:42:42,044 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} [2021-12-22 13:42:42,045 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 15 predicate places. [2021-12-22 13:42:42,045 INFO L470 AbstractCegarLoop]: Abstraction has has 174 places, 162 transitions, 424 flow [2021-12-22 13:42:42,045 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) [2021-12-22 13:42:42,045 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:42,045 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] [2021-12-22 13:42:42,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 13:42:42,046 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:42,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:42,046 INFO L85 PathProgramCache]: Analyzing trace with hash -250466245, now seen corresponding path program 2 times [2021-12-22 13:42:42,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:42,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182098869] [2021-12-22 13:42:42,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:42,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:42,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:42,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:42,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182098869] [2021-12-22 13:42:42,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182098869] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:42,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:42,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:42:42,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235164446] [2021-12-22 13:42:42,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:42,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:42:42,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:42,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:42:42,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:42:42,078 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2021-12-22 13:42:42,079 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) [2021-12-22 13:42:42,079 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:42,079 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2021-12-22 13:42:42,079 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:42,125 INFO L129 PetriNetUnfolder]: 38/491 cut-off events. [2021-12-22 13:42:42,125 INFO L130 PetriNetUnfolder]: For 415/432 co-relation queries the response was YES. [2021-12-22 13:42:42,127 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. [2021-12-22 13:42:42,128 INFO L132 encePairwiseOnDemand]: 170/176 looper letters, 18 selfloop transitions, 3 changer transitions 2/168 dead transitions. [2021-12-22 13:42:42,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 168 transitions, 487 flow [2021-12-22 13:42:42,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:42:42,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-22 13:42:42,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2021-12-22 13:42:42,130 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2021-12-22 13:42:42,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2021-12-22 13:42:42,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2021-12-22 13:42:42,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:42,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2021-12-22 13:42:42,132 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) [2021-12-22 13:42:42,132 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) [2021-12-22 13:42:42,133 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) [2021-12-22 13:42:42,133 INFO L186 Difference]: Start difference. First operand has 174 places, 162 transitions, 424 flow. Second operand 3 states and 489 transitions. [2021-12-22 13:42:42,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 168 transitions, 487 flow [2021-12-22 13:42:42,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 168 transitions, 477 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-22 13:42:42,137 INFO L242 Difference]: Finished difference. Result has 176 places, 163 transitions, 446 flow [2021-12-22 13:42:42,137 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} [2021-12-22 13:42:42,138 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 17 predicate places. [2021-12-22 13:42:42,138 INFO L470 AbstractCegarLoop]: Abstraction has has 176 places, 163 transitions, 446 flow [2021-12-22 13:42:42,139 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) [2021-12-22 13:42:42,139 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:42,139 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] [2021-12-22 13:42:42,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 13:42:42,139 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:42,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:42,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1510269733, now seen corresponding path program 1 times [2021-12-22 13:42:42,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:42,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494071467] [2021-12-22 13:42:42,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:42,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:42,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:42,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:42,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494071467] [2021-12-22 13:42:42,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494071467] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:42,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:42,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:42,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459040593] [2021-12-22 13:42:42,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:42,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:42,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:42,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:42,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:42,246 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:42,248 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) [2021-12-22 13:42:42,248 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:42,248 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:42,248 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:42,510 INFO L129 PetriNetUnfolder]: 189/899 cut-off events. [2021-12-22 13:42:42,511 INFO L130 PetriNetUnfolder]: For 1062/1086 co-relation queries the response was YES. [2021-12-22 13:42:42,513 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. [2021-12-22 13:42:42,517 INFO L132 encePairwiseOnDemand]: 161/176 looper letters, 72 selfloop transitions, 22 changer transitions 34/256 dead transitions. [2021-12-22 13:42:42,517 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 256 transitions, 1069 flow [2021-12-22 13:42:42,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-22 13:42:42,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-22 13:42:42,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2251 transitions. [2021-12-22 13:42:42,520 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7993607954545454 [2021-12-22 13:42:42,520 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2251 transitions. [2021-12-22 13:42:42,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2251 transitions. [2021-12-22 13:42:42,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:42,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2251 transitions. [2021-12-22 13:42:42,525 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) [2021-12-22 13:42:42,528 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) [2021-12-22 13:42:42,529 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) [2021-12-22 13:42:42,529 INFO L186 Difference]: Start difference. First operand has 176 places, 163 transitions, 446 flow. Second operand 16 states and 2251 transitions. [2021-12-22 13:42:42,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 256 transitions, 1069 flow [2021-12-22 13:42:42,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 256 transitions, 1060 flow, removed 3 selfloop flow, removed 1 redundant places. [2021-12-22 13:42:42,536 INFO L242 Difference]: Finished difference. Result has 200 places, 184 transitions, 670 flow [2021-12-22 13:42:42,537 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} [2021-12-22 13:42:42,537 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 41 predicate places. [2021-12-22 13:42:42,537 INFO L470 AbstractCegarLoop]: Abstraction has has 200 places, 184 transitions, 670 flow [2021-12-22 13:42:42,538 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) [2021-12-22 13:42:42,538 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:42,538 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] [2021-12-22 13:42:42,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 13:42:42,538 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:42,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:42,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1403497175, now seen corresponding path program 1 times [2021-12-22 13:42:42,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:42,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720851084] [2021-12-22 13:42:42,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:42,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:42,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:42,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:42,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720851084] [2021-12-22 13:42:42,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720851084] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:42,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:42,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:42:42,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844406938] [2021-12-22 13:42:42,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:42,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:42:42,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:42,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:42:42,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:42:42,567 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2021-12-22 13:42:42,568 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) [2021-12-22 13:42:42,568 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:42,568 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2021-12-22 13:42:42,568 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:42,673 INFO L129 PetriNetUnfolder]: 91/893 cut-off events. [2021-12-22 13:42:42,674 INFO L130 PetriNetUnfolder]: For 1700/1718 co-relation queries the response was YES. [2021-12-22 13:42:42,677 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. [2021-12-22 13:42:42,679 INFO L132 encePairwiseOnDemand]: 168/176 looper letters, 12 selfloop transitions, 5 changer transitions 2/190 dead transitions. [2021-12-22 13:42:42,679 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 190 transitions, 721 flow [2021-12-22 13:42:42,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:42:42,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-22 13:42:42,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2021-12-22 13:42:42,680 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2021-12-22 13:42:42,681 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2021-12-22 13:42:42,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2021-12-22 13:42:42,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:42,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2021-12-22 13:42:42,683 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) [2021-12-22 13:42:42,684 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) [2021-12-22 13:42:42,688 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) [2021-12-22 13:42:42,688 INFO L186 Difference]: Start difference. First operand has 200 places, 184 transitions, 670 flow. Second operand 3 states and 489 transitions. [2021-12-22 13:42:42,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 190 transitions, 721 flow [2021-12-22 13:42:42,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 190 transitions, 671 flow, removed 25 selfloop flow, removed 5 redundant places. [2021-12-22 13:42:42,699 INFO L242 Difference]: Finished difference. Result has 193 places, 185 transitions, 648 flow [2021-12-22 13:42:42,699 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} [2021-12-22 13:42:42,701 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 34 predicate places. [2021-12-22 13:42:42,701 INFO L470 AbstractCegarLoop]: Abstraction has has 193 places, 185 transitions, 648 flow [2021-12-22 13:42:42,702 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) [2021-12-22 13:42:42,702 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:42,702 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] [2021-12-22 13:42:42,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 13:42:42,702 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:42,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:42,703 INFO L85 PathProgramCache]: Analyzing trace with hash -749552169, now seen corresponding path program 2 times [2021-12-22 13:42:42,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:42,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440487936] [2021-12-22 13:42:42,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:42,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:42,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:42,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:42,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440487936] [2021-12-22 13:42:42,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440487936] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:42,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:42,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:42,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812819837] [2021-12-22 13:42:42,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:42,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:42,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:42,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:42,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:42,833 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:42,834 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) [2021-12-22 13:42:42,834 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:42,834 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:42,834 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:43,252 INFO L129 PetriNetUnfolder]: 220/1325 cut-off events. [2021-12-22 13:42:43,252 INFO L130 PetriNetUnfolder]: For 2111/2120 co-relation queries the response was YES. [2021-12-22 13:42:43,256 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. [2021-12-22 13:42:43,260 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 116 selfloop transitions, 6 changer transitions 41/293 dead transitions. [2021-12-22 13:42:43,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 293 transitions, 1586 flow [2021-12-22 13:42:43,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-22 13:42:43,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-22 13:42:43,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3313 transitions. [2021-12-22 13:42:43,265 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7843276515151515 [2021-12-22 13:42:43,266 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3313 transitions. [2021-12-22 13:42:43,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3313 transitions. [2021-12-22 13:42:43,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:43,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3313 transitions. [2021-12-22 13:42:43,272 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) [2021-12-22 13:42:43,277 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) [2021-12-22 13:42:43,278 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) [2021-12-22 13:42:43,278 INFO L186 Difference]: Start difference. First operand has 193 places, 185 transitions, 648 flow. Second operand 24 states and 3313 transitions. [2021-12-22 13:42:43,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 293 transitions, 1586 flow [2021-12-22 13:42:43,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 293 transitions, 1576 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-22 13:42:43,290 INFO L242 Difference]: Finished difference. Result has 235 places, 189 transitions, 754 flow [2021-12-22 13:42:43,290 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} [2021-12-22 13:42:43,291 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 76 predicate places. [2021-12-22 13:42:43,291 INFO L470 AbstractCegarLoop]: Abstraction has has 235 places, 189 transitions, 754 flow [2021-12-22 13:42:43,291 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) [2021-12-22 13:42:43,292 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:43,292 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] [2021-12-22 13:42:43,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 13:42:43,292 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:43,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:43,292 INFO L85 PathProgramCache]: Analyzing trace with hash -26456751, now seen corresponding path program 1 times [2021-12-22 13:42:43,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:43,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575028495] [2021-12-22 13:42:43,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:43,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:43,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:43,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:43,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575028495] [2021-12-22 13:42:43,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575028495] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:43,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:43,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:42:43,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955987890] [2021-12-22 13:42:43,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:43,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:42:43,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:43,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:42:43,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:42:43,313 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2021-12-22 13:42:43,314 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) [2021-12-22 13:42:43,314 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:43,314 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2021-12-22 13:42:43,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:43,381 INFO L129 PetriNetUnfolder]: 39/587 cut-off events. [2021-12-22 13:42:43,381 INFO L130 PetriNetUnfolder]: For 1478/1535 co-relation queries the response was YES. [2021-12-22 13:42:43,392 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. [2021-12-22 13:42:43,393 INFO L132 encePairwiseOnDemand]: 170/176 looper letters, 16 selfloop transitions, 3 changer transitions 12/185 dead transitions. [2021-12-22 13:42:43,394 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 185 transitions, 746 flow [2021-12-22 13:42:43,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:42:43,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-22 13:42:43,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2021-12-22 13:42:43,395 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2021-12-22 13:42:43,395 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2021-12-22 13:42:43,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2021-12-22 13:42:43,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:43,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2021-12-22 13:42:43,397 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) [2021-12-22 13:42:43,398 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) [2021-12-22 13:42:43,398 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) [2021-12-22 13:42:43,398 INFO L186 Difference]: Start difference. First operand has 235 places, 189 transitions, 754 flow. Second operand 3 states and 489 transitions. [2021-12-22 13:42:43,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 185 transitions, 746 flow [2021-12-22 13:42:43,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 185 transitions, 679 flow, removed 30 selfloop flow, removed 13 redundant places. [2021-12-22 13:42:43,409 INFO L242 Difference]: Finished difference. Result has 207 places, 170 transitions, 586 flow [2021-12-22 13:42:43,409 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} [2021-12-22 13:42:43,409 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 48 predicate places. [2021-12-22 13:42:43,410 INFO L470 AbstractCegarLoop]: Abstraction has has 207 places, 170 transitions, 586 flow [2021-12-22 13:42:43,410 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) [2021-12-22 13:42:43,410 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:43,410 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] [2021-12-22 13:42:43,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 13:42:43,411 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:43,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:43,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1239491335, now seen corresponding path program 1 times [2021-12-22 13:42:43,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:43,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491036073] [2021-12-22 13:42:43,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:43,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:43,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:43,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:43,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491036073] [2021-12-22 13:42:43,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491036073] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:43,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:43,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:43,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522676867] [2021-12-22 13:42:43,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:43,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:43,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:43,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:43,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:43,509 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:43,510 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) [2021-12-22 13:42:43,510 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:43,510 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:43,510 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:43,820 INFO L129 PetriNetUnfolder]: 119/762 cut-off events. [2021-12-22 13:42:43,820 INFO L130 PetriNetUnfolder]: For 1968/1985 co-relation queries the response was YES. [2021-12-22 13:42:43,823 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. [2021-12-22 13:42:43,825 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 77 selfloop transitions, 6 changer transitions 37/250 dead transitions. [2021-12-22 13:42:43,825 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 250 transitions, 1290 flow [2021-12-22 13:42:43,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-22 13:42:43,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-22 13:42:43,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3303 transitions. [2021-12-22 13:42:43,830 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7819602272727273 [2021-12-22 13:42:43,830 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3303 transitions. [2021-12-22 13:42:43,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3303 transitions. [2021-12-22 13:42:43,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:43,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3303 transitions. [2021-12-22 13:42:43,836 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) [2021-12-22 13:42:43,842 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) [2021-12-22 13:42:43,843 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) [2021-12-22 13:42:43,843 INFO L186 Difference]: Start difference. First operand has 207 places, 170 transitions, 586 flow. Second operand 24 states and 3303 transitions. [2021-12-22 13:42:43,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 250 transitions, 1290 flow [2021-12-22 13:42:43,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 250 transitions, 1133 flow, removed 76 selfloop flow, removed 14 redundant places. [2021-12-22 13:42:43,852 INFO L242 Difference]: Finished difference. Result has 232 places, 175 transitions, 665 flow [2021-12-22 13:42:43,853 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} [2021-12-22 13:42:43,853 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 73 predicate places. [2021-12-22 13:42:43,853 INFO L470 AbstractCegarLoop]: Abstraction has has 232 places, 175 transitions, 665 flow [2021-12-22 13:42:43,854 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) [2021-12-22 13:42:43,854 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:43,854 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] [2021-12-22 13:42:43,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 13:42:43,855 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:43,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:43,855 INFO L85 PathProgramCache]: Analyzing trace with hash 633918351, now seen corresponding path program 3 times [2021-12-22 13:42:43,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:43,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137460576] [2021-12-22 13:42:43,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:43,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:44,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:44,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:44,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137460576] [2021-12-22 13:42:44,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137460576] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:44,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:44,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:44,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294951030] [2021-12-22 13:42:44,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:44,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:44,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:44,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:44,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:44,004 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:44,005 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) [2021-12-22 13:42:44,005 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:44,005 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:44,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:44,244 INFO L129 PetriNetUnfolder]: 127/787 cut-off events. [2021-12-22 13:42:44,245 INFO L130 PetriNetUnfolder]: For 2110/2133 co-relation queries the response was YES. [2021-12-22 13:42:44,249 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. [2021-12-22 13:42:44,251 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 61 selfloop transitions, 16 changer transitions 25/231 dead transitions. [2021-12-22 13:42:44,251 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 231 transitions, 1206 flow [2021-12-22 13:42:44,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 13:42:44,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-22 13:42:44,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2347 transitions. [2021-12-22 13:42:44,254 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7844251336898396 [2021-12-22 13:42:44,255 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2347 transitions. [2021-12-22 13:42:44,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2347 transitions. [2021-12-22 13:42:44,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:44,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2347 transitions. [2021-12-22 13:42:44,259 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) [2021-12-22 13:42:44,262 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) [2021-12-22 13:42:44,262 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) [2021-12-22 13:42:44,262 INFO L186 Difference]: Start difference. First operand has 232 places, 175 transitions, 665 flow. Second operand 17 states and 2347 transitions. [2021-12-22 13:42:44,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 231 transitions, 1206 flow [2021-12-22 13:42:44,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 231 transitions, 1163 flow, removed 21 selfloop flow, removed 12 redundant places. [2021-12-22 13:42:44,273 INFO L242 Difference]: Finished difference. Result has 231 places, 190 transitions, 817 flow [2021-12-22 13:42:44,273 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} [2021-12-22 13:42:44,274 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 72 predicate places. [2021-12-22 13:42:44,274 INFO L470 AbstractCegarLoop]: Abstraction has has 231 places, 190 transitions, 817 flow [2021-12-22 13:42:44,274 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) [2021-12-22 13:42:44,274 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:44,274 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] [2021-12-22 13:42:44,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 13:42:44,275 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:44,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:44,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1319299375, now seen corresponding path program 2 times [2021-12-22 13:42:44,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:44,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687138946] [2021-12-22 13:42:44,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:44,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:44,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:44,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:44,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687138946] [2021-12-22 13:42:44,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687138946] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:44,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:44,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:44,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430565590] [2021-12-22 13:42:44,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:44,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:44,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:44,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:44,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:44,385 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:44,385 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) [2021-12-22 13:42:44,386 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:44,386 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:44,386 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:44,671 INFO L129 PetriNetUnfolder]: 173/899 cut-off events. [2021-12-22 13:42:44,671 INFO L130 PetriNetUnfolder]: For 2352/2367 co-relation queries the response was YES. [2021-12-22 13:42:44,675 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. [2021-12-22 13:42:44,678 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 76 selfloop transitions, 16 changer transitions 23/250 dead transitions. [2021-12-22 13:42:44,679 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 250 transitions, 1533 flow [2021-12-22 13:42:44,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 13:42:44,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-22 13:42:44,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2346 transitions. [2021-12-22 13:42:44,681 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7840909090909091 [2021-12-22 13:42:44,681 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2346 transitions. [2021-12-22 13:42:44,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2346 transitions. [2021-12-22 13:42:44,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:44,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2346 transitions. [2021-12-22 13:42:44,684 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) [2021-12-22 13:42:44,687 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) [2021-12-22 13:42:44,688 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) [2021-12-22 13:42:44,688 INFO L186 Difference]: Start difference. First operand has 231 places, 190 transitions, 817 flow. Second operand 17 states and 2346 transitions. [2021-12-22 13:42:44,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 250 transitions, 1533 flow [2021-12-22 13:42:44,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 250 transitions, 1506 flow, removed 11 selfloop flow, removed 9 redundant places. [2021-12-22 13:42:44,699 INFO L242 Difference]: Finished difference. Result has 241 places, 208 transitions, 1049 flow [2021-12-22 13:42:44,699 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} [2021-12-22 13:42:44,700 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 82 predicate places. [2021-12-22 13:42:44,700 INFO L470 AbstractCegarLoop]: Abstraction has has 241 places, 208 transitions, 1049 flow [2021-12-22 13:42:44,701 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) [2021-12-22 13:42:44,701 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:44,701 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] [2021-12-22 13:42:44,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 13:42:44,701 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:44,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:44,701 INFO L85 PathProgramCache]: Analyzing trace with hash -321024153, now seen corresponding path program 3 times [2021-12-22 13:42:44,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:44,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111439711] [2021-12-22 13:42:44,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:44,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:44,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:44,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:44,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:44,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111439711] [2021-12-22 13:42:44,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111439711] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:44,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:44,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:44,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497916612] [2021-12-22 13:42:44,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:44,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:44,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:44,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:44,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:44,807 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:44,808 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) [2021-12-22 13:42:44,808 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:44,808 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:44,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:45,061 INFO L129 PetriNetUnfolder]: 179/902 cut-off events. [2021-12-22 13:42:45,061 INFO L130 PetriNetUnfolder]: For 3247/3265 co-relation queries the response was YES. [2021-12-22 13:42:45,065 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. [2021-12-22 13:42:45,068 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 81 selfloop transitions, 21 changer transitions 20/257 dead transitions. [2021-12-22 13:42:45,068 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 257 transitions, 1817 flow [2021-12-22 13:42:45,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-22 13:42:45,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-22 13:42:45,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2205 transitions. [2021-12-22 13:42:45,070 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7830255681818182 [2021-12-22 13:42:45,070 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2205 transitions. [2021-12-22 13:42:45,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2205 transitions. [2021-12-22 13:42:45,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:45,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2205 transitions. [2021-12-22 13:42:45,073 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) [2021-12-22 13:42:45,076 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) [2021-12-22 13:42:45,076 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) [2021-12-22 13:42:45,076 INFO L186 Difference]: Start difference. First operand has 241 places, 208 transitions, 1049 flow. Second operand 16 states and 2205 transitions. [2021-12-22 13:42:45,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 257 transitions, 1817 flow [2021-12-22 13:42:45,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 257 transitions, 1622 flow, removed 95 selfloop flow, removed 6 redundant places. [2021-12-22 13:42:45,090 INFO L242 Difference]: Finished difference. Result has 253 places, 218 transitions, 1159 flow [2021-12-22 13:42:45,090 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} [2021-12-22 13:42:45,090 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 94 predicate places. [2021-12-22 13:42:45,090 INFO L470 AbstractCegarLoop]: Abstraction has has 253 places, 218 transitions, 1159 flow [2021-12-22 13:42:45,091 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) [2021-12-22 13:42:45,091 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:45,091 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] [2021-12-22 13:42:45,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 13:42:45,091 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:45,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:45,092 INFO L85 PathProgramCache]: Analyzing trace with hash 2134941247, now seen corresponding path program 4 times [2021-12-22 13:42:45,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:45,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241482320] [2021-12-22 13:42:45,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:45,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:45,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:45,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:45,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241482320] [2021-12-22 13:42:45,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241482320] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:45,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:45,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:45,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911033314] [2021-12-22 13:42:45,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:45,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:45,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:45,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:45,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:45,198 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:45,199 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) [2021-12-22 13:42:45,199 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:45,199 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:45,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:45,492 INFO L129 PetriNetUnfolder]: 186/921 cut-off events. [2021-12-22 13:42:45,493 INFO L130 PetriNetUnfolder]: For 3368/3389 co-relation queries the response was YES. [2021-12-22 13:42:45,497 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. [2021-12-22 13:42:45,500 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 86 selfloop transitions, 24 changer transitions 21/266 dead transitions. [2021-12-22 13:42:45,500 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 266 transitions, 1958 flow [2021-12-22 13:42:45,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 13:42:45,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-22 13:42:45,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2344 transitions. [2021-12-22 13:42:45,502 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7834224598930482 [2021-12-22 13:42:45,502 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2344 transitions. [2021-12-22 13:42:45,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2344 transitions. [2021-12-22 13:42:45,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:45,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2344 transitions. [2021-12-22 13:42:45,505 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) [2021-12-22 13:42:45,508 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) [2021-12-22 13:42:45,508 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) [2021-12-22 13:42:45,508 INFO L186 Difference]: Start difference. First operand has 253 places, 218 transitions, 1159 flow. Second operand 17 states and 2344 transitions. [2021-12-22 13:42:45,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 266 transitions, 1958 flow [2021-12-22 13:42:45,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 266 transitions, 1817 flow, removed 49 selfloop flow, removed 8 redundant places. [2021-12-22 13:42:45,523 INFO L242 Difference]: Finished difference. Result has 266 places, 231 transitions, 1333 flow [2021-12-22 13:42:45,523 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} [2021-12-22 13:42:45,524 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 107 predicate places. [2021-12-22 13:42:45,524 INFO L470 AbstractCegarLoop]: Abstraction has has 266 places, 231 transitions, 1333 flow [2021-12-22 13:42:45,524 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) [2021-12-22 13:42:45,524 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:45,524 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] [2021-12-22 13:42:45,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 13:42:45,525 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:45,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:45,525 INFO L85 PathProgramCache]: Analyzing trace with hash -845261417, now seen corresponding path program 5 times [2021-12-22 13:42:45,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:45,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398904977] [2021-12-22 13:42:45,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:45,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:45,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:45,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:45,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398904977] [2021-12-22 13:42:45,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398904977] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:45,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:45,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:45,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656200112] [2021-12-22 13:42:45,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:45,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:45,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:45,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:45,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:45,643 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:45,644 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) [2021-12-22 13:42:45,644 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:45,644 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:45,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:46,013 INFO L129 PetriNetUnfolder]: 185/923 cut-off events. [2021-12-22 13:42:46,014 INFO L130 PetriNetUnfolder]: For 4086/4110 co-relation queries the response was YES. [2021-12-22 13:42:46,018 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. [2021-12-22 13:42:46,022 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 110 selfloop transitions, 27 changer transitions 35/307 dead transitions. [2021-12-22 13:42:46,022 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 307 transitions, 2431 flow [2021-12-22 13:42:46,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-22 13:42:46,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-22 13:42:46,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3299 transitions. [2021-12-22 13:42:46,025 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7810132575757576 [2021-12-22 13:42:46,025 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3299 transitions. [2021-12-22 13:42:46,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3299 transitions. [2021-12-22 13:42:46,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:46,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3299 transitions. [2021-12-22 13:42:46,030 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) [2021-12-22 13:42:46,034 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) [2021-12-22 13:42:46,034 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) [2021-12-22 13:42:46,035 INFO L186 Difference]: Start difference. First operand has 266 places, 231 transitions, 1333 flow. Second operand 24 states and 3299 transitions. [2021-12-22 13:42:46,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 307 transitions, 2431 flow [2021-12-22 13:42:46,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 307 transitions, 2298 flow, removed 64 selfloop flow, removed 7 redundant places. [2021-12-22 13:42:46,054 INFO L242 Difference]: Finished difference. Result has 293 places, 233 transitions, 1401 flow [2021-12-22 13:42:46,055 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} [2021-12-22 13:42:46,055 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 134 predicate places. [2021-12-22 13:42:46,055 INFO L470 AbstractCegarLoop]: Abstraction has has 293 places, 233 transitions, 1401 flow [2021-12-22 13:42:46,056 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) [2021-12-22 13:42:46,056 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:46,056 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] [2021-12-22 13:42:46,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 13:42:46,056 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:46,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:46,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1901576121, now seen corresponding path program 6 times [2021-12-22 13:42:46,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:46,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999592323] [2021-12-22 13:42:46,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:46,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:46,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:46,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:46,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999592323] [2021-12-22 13:42:46,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999592323] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:46,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:46,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:46,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914193103] [2021-12-22 13:42:46,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:46,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:46,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:46,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:46,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:46,150 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:46,151 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) [2021-12-22 13:42:46,151 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:46,152 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:46,152 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:46,501 INFO L129 PetriNetUnfolder]: 192/966 cut-off events. [2021-12-22 13:42:46,501 INFO L130 PetriNetUnfolder]: For 5157/5179 co-relation queries the response was YES. [2021-12-22 13:42:46,506 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. [2021-12-22 13:42:46,509 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 94 selfloop transitions, 26 changer transitions 29/284 dead transitions. [2021-12-22 13:42:46,509 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 284 transitions, 2264 flow [2021-12-22 13:42:46,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-22 13:42:46,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-22 13:42:46,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3016 transitions. [2021-12-22 13:42:46,512 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7789256198347108 [2021-12-22 13:42:46,512 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3016 transitions. [2021-12-22 13:42:46,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3016 transitions. [2021-12-22 13:42:46,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:46,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3016 transitions. [2021-12-22 13:42:46,516 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) [2021-12-22 13:42:46,520 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) [2021-12-22 13:42:46,520 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) [2021-12-22 13:42:46,521 INFO L186 Difference]: Start difference. First operand has 293 places, 233 transitions, 1401 flow. Second operand 22 states and 3016 transitions. [2021-12-22 13:42:46,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 284 transitions, 2264 flow [2021-12-22 13:42:46,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 284 transitions, 2175 flow, removed 37 selfloop flow, removed 17 redundant places. [2021-12-22 13:42:46,541 INFO L242 Difference]: Finished difference. Result has 295 places, 237 transitions, 1502 flow [2021-12-22 13:42:46,542 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} [2021-12-22 13:42:46,542 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 136 predicate places. [2021-12-22 13:42:46,542 INFO L470 AbstractCegarLoop]: Abstraction has has 295 places, 237 transitions, 1502 flow [2021-12-22 13:42:46,543 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) [2021-12-22 13:42:46,543 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:46,543 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] [2021-12-22 13:42:46,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-22 13:42:46,543 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:46,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:46,543 INFO L85 PathProgramCache]: Analyzing trace with hash -2046587005, now seen corresponding path program 7 times [2021-12-22 13:42:46,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:46,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903864347] [2021-12-22 13:42:46,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:46,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:46,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:46,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:46,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903864347] [2021-12-22 13:42:46,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903864347] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:46,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:46,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:46,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610923852] [2021-12-22 13:42:46,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:46,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:46,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:46,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:46,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:46,649 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:46,650 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) [2021-12-22 13:42:46,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:46,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:46,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:46,977 INFO L129 PetriNetUnfolder]: 192/992 cut-off events. [2021-12-22 13:42:46,978 INFO L130 PetriNetUnfolder]: For 5311/5336 co-relation queries the response was YES. [2021-12-22 13:42:46,984 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. [2021-12-22 13:42:46,988 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 98 selfloop transitions, 27 changer transitions 28/288 dead transitions. [2021-12-22 13:42:46,989 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 288 transitions, 2522 flow [2021-12-22 13:42:46,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-22 13:42:46,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-22 13:42:47,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2888 transitions. [2021-12-22 13:42:47,009 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7813852813852814 [2021-12-22 13:42:47,009 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2888 transitions. [2021-12-22 13:42:47,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2888 transitions. [2021-12-22 13:42:47,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:47,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2888 transitions. [2021-12-22 13:42:47,012 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) [2021-12-22 13:42:47,016 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) [2021-12-22 13:42:47,016 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) [2021-12-22 13:42:47,016 INFO L186 Difference]: Start difference. First operand has 295 places, 237 transitions, 1502 flow. Second operand 21 states and 2888 transitions. [2021-12-22 13:42:47,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 288 transitions, 2522 flow [2021-12-22 13:42:47,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 288 transitions, 2385 flow, removed 54 selfloop flow, removed 13 redundant places. [2021-12-22 13:42:47,039 INFO L242 Difference]: Finished difference. Result has 304 places, 245 transitions, 1707 flow [2021-12-22 13:42:47,039 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} [2021-12-22 13:42:47,040 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 145 predicate places. [2021-12-22 13:42:47,040 INFO L470 AbstractCegarLoop]: Abstraction has has 304 places, 245 transitions, 1707 flow [2021-12-22 13:42:47,040 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) [2021-12-22 13:42:47,040 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:47,040 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] [2021-12-22 13:42:47,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-22 13:42:47,041 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:47,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:47,041 INFO L85 PathProgramCache]: Analyzing trace with hash 827566539, now seen corresponding path program 8 times [2021-12-22 13:42:47,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:47,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131217369] [2021-12-22 13:42:47,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:47,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:47,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:47,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:47,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131217369] [2021-12-22 13:42:47,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131217369] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:47,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:47,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:47,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714966627] [2021-12-22 13:42:47,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:47,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:47,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:47,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:47,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:47,140 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:47,140 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) [2021-12-22 13:42:47,140 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:47,140 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:47,141 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:47,445 INFO L129 PetriNetUnfolder]: 189/1013 cut-off events. [2021-12-22 13:42:47,446 INFO L130 PetriNetUnfolder]: For 6311/6336 co-relation queries the response was YES. [2021-12-22 13:42:47,452 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. [2021-12-22 13:42:47,456 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 91 selfloop transitions, 31 changer transitions 30/287 dead transitions. [2021-12-22 13:42:47,456 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 287 transitions, 2659 flow [2021-12-22 13:42:47,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-22 13:42:47,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-22 13:42:47,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2748 transitions. [2021-12-22 13:42:47,458 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7806818181818181 [2021-12-22 13:42:47,458 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2748 transitions. [2021-12-22 13:42:47,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2748 transitions. [2021-12-22 13:42:47,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:47,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2748 transitions. [2021-12-22 13:42:47,462 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) [2021-12-22 13:42:47,465 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) [2021-12-22 13:42:47,465 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) [2021-12-22 13:42:47,465 INFO L186 Difference]: Start difference. First operand has 304 places, 245 transitions, 1707 flow. Second operand 20 states and 2748 transitions. [2021-12-22 13:42:47,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 287 transitions, 2659 flow [2021-12-22 13:42:47,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 287 transitions, 2489 flow, removed 69 selfloop flow, removed 13 redundant places. [2021-12-22 13:42:47,523 INFO L242 Difference]: Finished difference. Result has 310 places, 249 transitions, 1795 flow [2021-12-22 13:42:47,523 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} [2021-12-22 13:42:47,523 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 151 predicate places. [2021-12-22 13:42:47,523 INFO L470 AbstractCegarLoop]: Abstraction has has 310 places, 249 transitions, 1795 flow [2021-12-22 13:42:47,524 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) [2021-12-22 13:42:47,524 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:47,524 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] [2021-12-22 13:42:47,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 13:42:47,524 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:47,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:47,525 INFO L85 PathProgramCache]: Analyzing trace with hash 708724587, now seen corresponding path program 9 times [2021-12-22 13:42:47,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:47,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705869927] [2021-12-22 13:42:47,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:47,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:47,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:47,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:47,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705869927] [2021-12-22 13:42:47,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705869927] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:47,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:47,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:47,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419156980] [2021-12-22 13:42:47,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:47,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:47,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:47,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:47,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:47,611 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:47,612 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) [2021-12-22 13:42:47,612 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:47,612 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:47,612 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:47,888 INFO L129 PetriNetUnfolder]: 174/950 cut-off events. [2021-12-22 13:42:47,888 INFO L130 PetriNetUnfolder]: For 5200/5229 co-relation queries the response was YES. [2021-12-22 13:42:47,895 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. [2021-12-22 13:42:47,898 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 92 selfloop transitions, 19 changer transitions 30/276 dead transitions. [2021-12-22 13:42:47,898 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 276 transitions, 2382 flow [2021-12-22 13:42:47,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-22 13:42:47,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-22 13:42:47,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2468 transitions. [2021-12-22 13:42:47,901 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7790404040404041 [2021-12-22 13:42:47,901 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2468 transitions. [2021-12-22 13:42:47,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2468 transitions. [2021-12-22 13:42:47,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:47,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2468 transitions. [2021-12-22 13:42:47,904 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) [2021-12-22 13:42:47,909 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) [2021-12-22 13:42:47,910 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) [2021-12-22 13:42:47,910 INFO L186 Difference]: Start difference. First operand has 310 places, 249 transitions, 1795 flow. Second operand 18 states and 2468 transitions. [2021-12-22 13:42:47,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 276 transitions, 2382 flow [2021-12-22 13:42:47,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 276 transitions, 2273 flow, removed 23 selfloop flow, removed 14 redundant places. [2021-12-22 13:42:47,940 INFO L242 Difference]: Finished difference. Result has 308 places, 234 transitions, 1537 flow [2021-12-22 13:42:47,940 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} [2021-12-22 13:42:47,941 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 149 predicate places. [2021-12-22 13:42:47,941 INFO L470 AbstractCegarLoop]: Abstraction has has 308 places, 234 transitions, 1537 flow [2021-12-22 13:42:47,941 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) [2021-12-22 13:42:47,941 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:47,941 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] [2021-12-22 13:42:47,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-22 13:42:47,942 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:47,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:47,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1863994139, now seen corresponding path program 10 times [2021-12-22 13:42:47,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:47,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536254354] [2021-12-22 13:42:47,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:47,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:47,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:48,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:48,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:48,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536254354] [2021-12-22 13:42:48,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536254354] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:48,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:48,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:48,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019649059] [2021-12-22 13:42:48,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:48,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:48,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:48,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:48,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:48,083 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:48,083 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) [2021-12-22 13:42:48,084 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:48,084 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:48,084 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:48,374 INFO L129 PetriNetUnfolder]: 167/932 cut-off events. [2021-12-22 13:42:48,374 INFO L130 PetriNetUnfolder]: For 4857/4875 co-relation queries the response was YES. [2021-12-22 13:42:48,381 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. [2021-12-22 13:42:48,387 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 80 selfloop transitions, 16 changer transitions 25/256 dead transitions. [2021-12-22 13:42:48,388 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 256 transitions, 2066 flow [2021-12-22 13:42:48,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-22 13:42:48,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-22 13:42:48,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2471 transitions. [2021-12-22 13:42:48,391 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7799873737373737 [2021-12-22 13:42:48,391 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2471 transitions. [2021-12-22 13:42:48,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2471 transitions. [2021-12-22 13:42:48,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:48,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2471 transitions. [2021-12-22 13:42:48,395 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) [2021-12-22 13:42:48,397 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) [2021-12-22 13:42:48,398 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) [2021-12-22 13:42:48,398 INFO L186 Difference]: Start difference. First operand has 308 places, 234 transitions, 1537 flow. Second operand 18 states and 2471 transitions. [2021-12-22 13:42:48,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 256 transitions, 2066 flow [2021-12-22 13:42:48,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 256 transitions, 1937 flow, removed 23 selfloop flow, removed 18 redundant places. [2021-12-22 13:42:48,423 INFO L242 Difference]: Finished difference. Result has 292 places, 226 transitions, 1379 flow [2021-12-22 13:42:48,424 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} [2021-12-22 13:42:48,425 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 133 predicate places. [2021-12-22 13:42:48,425 INFO L470 AbstractCegarLoop]: Abstraction has has 292 places, 226 transitions, 1379 flow [2021-12-22 13:42:48,425 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) [2021-12-22 13:42:48,425 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:48,426 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] [2021-12-22 13:42:48,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-22 13:42:48,426 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:48,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:48,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1263072555, now seen corresponding path program 11 times [2021-12-22 13:42:48,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:48,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783067697] [2021-12-22 13:42:48,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:48,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:48,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:48,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:48,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783067697] [2021-12-22 13:42:48,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783067697] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:48,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:48,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:48,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801023670] [2021-12-22 13:42:48,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:48,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:48,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:48,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:48,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:48,540 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:48,541 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) [2021-12-22 13:42:48,541 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:48,541 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:48,541 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:48,810 INFO L129 PetriNetUnfolder]: 163/924 cut-off events. [2021-12-22 13:42:48,810 INFO L130 PetriNetUnfolder]: For 4204/4222 co-relation queries the response was YES. [2021-12-22 13:42:48,815 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. [2021-12-22 13:42:48,818 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 75 selfloop transitions, 21 changer transitions 26/257 dead transitions. [2021-12-22 13:42:48,818 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 257 transitions, 2082 flow [2021-12-22 13:42:48,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 13:42:48,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-22 13:42:48,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2339 transitions. [2021-12-22 13:42:48,820 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7817513368983957 [2021-12-22 13:42:48,820 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2339 transitions. [2021-12-22 13:42:48,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2339 transitions. [2021-12-22 13:42:48,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:48,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2339 transitions. [2021-12-22 13:42:48,823 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) [2021-12-22 13:42:48,864 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) [2021-12-22 13:42:48,864 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) [2021-12-22 13:42:48,864 INFO L186 Difference]: Start difference. First operand has 292 places, 226 transitions, 1379 flow. Second operand 17 states and 2339 transitions. [2021-12-22 13:42:48,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 257 transitions, 2082 flow [2021-12-22 13:42:48,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 257 transitions, 1937 flow, removed 38 selfloop flow, removed 16 redundant places. [2021-12-22 13:42:48,881 INFO L242 Difference]: Finished difference. Result has 283 places, 228 transitions, 1416 flow [2021-12-22 13:42:48,882 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} [2021-12-22 13:42:48,882 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 124 predicate places. [2021-12-22 13:42:48,882 INFO L470 AbstractCegarLoop]: Abstraction has has 283 places, 228 transitions, 1416 flow [2021-12-22 13:42:48,883 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) [2021-12-22 13:42:48,883 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:48,883 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] [2021-12-22 13:42:48,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-22 13:42:48,883 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:48,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:48,883 INFO L85 PathProgramCache]: Analyzing trace with hash -801537573, now seen corresponding path program 12 times [2021-12-22 13:42:48,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:48,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467921244] [2021-12-22 13:42:48,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:48,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:48,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:48,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:48,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467921244] [2021-12-22 13:42:48,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467921244] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:48,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:48,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:48,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104796595] [2021-12-22 13:42:48,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:48,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:48,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:48,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:48,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:48,972 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:48,973 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) [2021-12-22 13:42:48,973 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:48,973 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:48,973 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:49,200 INFO L129 PetriNetUnfolder]: 150/865 cut-off events. [2021-12-22 13:42:49,200 INFO L130 PetriNetUnfolder]: For 3328/3346 co-relation queries the response was YES. [2021-12-22 13:42:49,205 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. [2021-12-22 13:42:49,207 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 70 selfloop transitions, 5 changer transitions 31/241 dead transitions. [2021-12-22 13:42:49,207 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 241 transitions, 1717 flow [2021-12-22 13:42:49,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-22 13:42:49,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-22 13:42:49,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2464 transitions. [2021-12-22 13:42:49,209 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2021-12-22 13:42:49,209 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2464 transitions. [2021-12-22 13:42:49,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2464 transitions. [2021-12-22 13:42:49,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:49,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2464 transitions. [2021-12-22 13:42:49,212 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) [2021-12-22 13:42:49,215 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) [2021-12-22 13:42:49,215 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) [2021-12-22 13:42:49,215 INFO L186 Difference]: Start difference. First operand has 283 places, 228 transitions, 1416 flow. Second operand 18 states and 2464 transitions. [2021-12-22 13:42:49,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 241 transitions, 1717 flow [2021-12-22 13:42:49,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 241 transitions, 1619 flow, removed 30 selfloop flow, removed 11 redundant places. [2021-12-22 13:42:49,232 INFO L242 Difference]: Finished difference. Result has 286 places, 208 transitions, 1081 flow [2021-12-22 13:42:49,233 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} [2021-12-22 13:42:49,233 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 127 predicate places. [2021-12-22 13:42:49,233 INFO L470 AbstractCegarLoop]: Abstraction has has 286 places, 208 transitions, 1081 flow [2021-12-22 13:42:49,233 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) [2021-12-22 13:42:49,233 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:49,234 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] [2021-12-22 13:42:49,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-22 13:42:49,234 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:49,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:49,234 INFO L85 PathProgramCache]: Analyzing trace with hash -836472735, now seen corresponding path program 13 times [2021-12-22 13:42:49,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:49,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870811452] [2021-12-22 13:42:49,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:49,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:49,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:49,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:49,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870811452] [2021-12-22 13:42:49,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870811452] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:49,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:49,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:49,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33063128] [2021-12-22 13:42:49,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:49,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:49,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:49,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:49,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:49,320 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:49,321 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) [2021-12-22 13:42:49,321 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:49,321 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:49,321 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:49,568 INFO L129 PetriNetUnfolder]: 143/819 cut-off events. [2021-12-22 13:42:49,568 INFO L130 PetriNetUnfolder]: For 3088/3110 co-relation queries the response was YES. [2021-12-22 13:42:49,573 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. [2021-12-22 13:42:49,604 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 72 selfloop transitions, 21 changer transitions 22/250 dead transitions. [2021-12-22 13:42:49,605 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 250 transitions, 1818 flow [2021-12-22 13:42:49,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-22 13:42:49,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-22 13:42:49,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2206 transitions. [2021-12-22 13:42:49,607 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7833806818181818 [2021-12-22 13:42:49,607 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2206 transitions. [2021-12-22 13:42:49,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2206 transitions. [2021-12-22 13:42:49,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:49,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2206 transitions. [2021-12-22 13:42:49,610 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) [2021-12-22 13:42:49,613 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) [2021-12-22 13:42:49,614 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) [2021-12-22 13:42:49,614 INFO L186 Difference]: Start difference. First operand has 286 places, 208 transitions, 1081 flow. Second operand 16 states and 2206 transitions. [2021-12-22 13:42:49,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 250 transitions, 1818 flow [2021-12-22 13:42:49,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 250 transitions, 1601 flow, removed 61 selfloop flow, removed 22 redundant places. [2021-12-22 13:42:49,629 INFO L242 Difference]: Finished difference. Result has 261 places, 217 transitions, 1187 flow [2021-12-22 13:42:49,629 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} [2021-12-22 13:42:49,629 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 102 predicate places. [2021-12-22 13:42:49,630 INFO L470 AbstractCegarLoop]: Abstraction has has 261 places, 217 transitions, 1187 flow [2021-12-22 13:42:49,630 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) [2021-12-22 13:42:49,630 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:49,630 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] [2021-12-22 13:42:49,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-22 13:42:49,630 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:49,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:49,631 INFO L85 PathProgramCache]: Analyzing trace with hash -358241663, now seen corresponding path program 14 times [2021-12-22 13:42:49,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:49,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581053303] [2021-12-22 13:42:49,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:49,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:49,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:49,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:49,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:49,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581053303] [2021-12-22 13:42:49,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581053303] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:49,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:49,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:49,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446093017] [2021-12-22 13:42:49,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:49,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:49,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:49,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:49,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:49,719 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:49,720 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) [2021-12-22 13:42:49,720 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:49,720 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:49,720 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:49,990 INFO L129 PetriNetUnfolder]: 142/826 cut-off events. [2021-12-22 13:42:49,990 INFO L130 PetriNetUnfolder]: For 2703/2718 co-relation queries the response was YES. [2021-12-22 13:42:49,994 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. [2021-12-22 13:42:49,996 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 76 selfloop transitions, 23 changer transitions 28/262 dead transitions. [2021-12-22 13:42:49,996 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 262 transitions, 1945 flow [2021-12-22 13:42:49,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-22 13:42:49,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-22 13:42:49,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2745 transitions. [2021-12-22 13:42:50,000 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7798295454545454 [2021-12-22 13:42:50,000 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2745 transitions. [2021-12-22 13:42:50,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2745 transitions. [2021-12-22 13:42:50,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:50,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2745 transitions. [2021-12-22 13:42:50,004 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) [2021-12-22 13:42:50,007 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) [2021-12-22 13:42:50,007 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) [2021-12-22 13:42:50,007 INFO L186 Difference]: Start difference. First operand has 261 places, 217 transitions, 1187 flow. Second operand 20 states and 2745 transitions. [2021-12-22 13:42:50,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 262 transitions, 1945 flow [2021-12-22 13:42:50,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 262 transitions, 1799 flow, removed 50 selfloop flow, removed 8 redundant places. [2021-12-22 13:42:50,025 INFO L242 Difference]: Finished difference. Result has 280 places, 224 transitions, 1292 flow [2021-12-22 13:42:50,025 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} [2021-12-22 13:42:50,026 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 121 predicate places. [2021-12-22 13:42:50,026 INFO L470 AbstractCegarLoop]: Abstraction has has 280 places, 224 transitions, 1292 flow [2021-12-22 13:42:50,026 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) [2021-12-22 13:42:50,026 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:50,026 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] [2021-12-22 13:42:50,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-22 13:42:50,027 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:50,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:50,028 INFO L85 PathProgramCache]: Analyzing trace with hash 149169609, now seen corresponding path program 15 times [2021-12-22 13:42:50,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:50,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280357667] [2021-12-22 13:42:50,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:50,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:50,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:50,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:50,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280357667] [2021-12-22 13:42:50,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280357667] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:50,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:50,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:50,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239734644] [2021-12-22 13:42:50,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:50,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:50,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:50,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:50,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:50,119 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:50,120 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) [2021-12-22 13:42:50,120 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:50,120 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:50,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:50,442 INFO L129 PetriNetUnfolder]: 144/864 cut-off events. [2021-12-22 13:42:50,443 INFO L130 PetriNetUnfolder]: For 3273/3288 co-relation queries the response was YES. [2021-12-22 13:42:50,447 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. [2021-12-22 13:42:50,448 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 75 selfloop transitions, 27 changer transitions 30/267 dead transitions. [2021-12-22 13:42:50,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 267 transitions, 2061 flow [2021-12-22 13:42:50,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-22 13:42:50,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-22 13:42:50,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3012 transitions. [2021-12-22 13:42:50,451 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7778925619834711 [2021-12-22 13:42:50,451 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3012 transitions. [2021-12-22 13:42:50,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3012 transitions. [2021-12-22 13:42:50,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:50,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3012 transitions. [2021-12-22 13:42:50,455 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) [2021-12-22 13:42:50,457 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) [2021-12-22 13:42:50,458 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) [2021-12-22 13:42:50,458 INFO L186 Difference]: Start difference. First operand has 280 places, 224 transitions, 1292 flow. Second operand 22 states and 3012 transitions. [2021-12-22 13:42:50,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 267 transitions, 2061 flow [2021-12-22 13:42:50,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 267 transitions, 1974 flow, removed 36 selfloop flow, removed 11 redundant places. [2021-12-22 13:42:50,473 INFO L242 Difference]: Finished difference. Result has 293 places, 229 transitions, 1409 flow [2021-12-22 13:42:50,473 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} [2021-12-22 13:42:50,474 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 134 predicate places. [2021-12-22 13:42:50,474 INFO L470 AbstractCegarLoop]: Abstraction has has 293 places, 229 transitions, 1409 flow [2021-12-22 13:42:50,474 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) [2021-12-22 13:42:50,474 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:50,475 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] [2021-12-22 13:42:50,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-22 13:42:50,475 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:50,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:50,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1681730419, now seen corresponding path program 16 times [2021-12-22 13:42:50,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:50,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639860887] [2021-12-22 13:42:50,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:50,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:50,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:50,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:50,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639860887] [2021-12-22 13:42:50,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639860887] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:50,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:50,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:50,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511369834] [2021-12-22 13:42:50,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:50,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:50,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:50,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:50,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:50,551 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:50,552 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) [2021-12-22 13:42:50,552 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:50,552 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:50,552 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:50,760 INFO L129 PetriNetUnfolder]: 130/803 cut-off events. [2021-12-22 13:42:50,760 INFO L130 PetriNetUnfolder]: For 2750/2765 co-relation queries the response was YES. [2021-12-22 13:42:50,765 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. [2021-12-22 13:42:50,767 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 68 selfloop transitions, 15 changer transitions 29/247 dead transitions. [2021-12-22 13:42:50,767 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 247 transitions, 1818 flow [2021-12-22 13:42:50,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-22 13:42:50,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-22 13:42:50,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2466 transitions. [2021-12-22 13:42:50,769 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7784090909090909 [2021-12-22 13:42:50,769 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2466 transitions. [2021-12-22 13:42:50,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2466 transitions. [2021-12-22 13:42:50,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:50,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2466 transitions. [2021-12-22 13:42:50,772 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) [2021-12-22 13:42:50,774 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) [2021-12-22 13:42:50,774 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) [2021-12-22 13:42:50,774 INFO L186 Difference]: Start difference. First operand has 293 places, 229 transitions, 1409 flow. Second operand 18 states and 2466 transitions. [2021-12-22 13:42:50,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 247 transitions, 1818 flow [2021-12-22 13:42:50,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 247 transitions, 1752 flow, removed 23 selfloop flow, removed 13 redundant places. [2021-12-22 13:42:50,790 INFO L242 Difference]: Finished difference. Result has 290 places, 214 transitions, 1200 flow [2021-12-22 13:42:50,790 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} [2021-12-22 13:42:50,791 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 131 predicate places. [2021-12-22 13:42:50,791 INFO L470 AbstractCegarLoop]: Abstraction has has 290 places, 214 transitions, 1200 flow [2021-12-22 13:42:50,791 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) [2021-12-22 13:42:50,791 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:50,792 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] [2021-12-22 13:42:50,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-22 13:42:50,792 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:50,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:50,792 INFO L85 PathProgramCache]: Analyzing trace with hash -2094668727, now seen corresponding path program 17 times [2021-12-22 13:42:50,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:50,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071999887] [2021-12-22 13:42:50,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:50,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:50,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:50,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:50,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071999887] [2021-12-22 13:42:50,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071999887] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:50,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:50,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:50,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470361448] [2021-12-22 13:42:50,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:50,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:50,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:50,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:50,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:50,870 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:50,871 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) [2021-12-22 13:42:50,871 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:50,871 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:50,872 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:51,166 INFO L129 PetriNetUnfolder]: 130/800 cut-off events. [2021-12-22 13:42:51,167 INFO L130 PetriNetUnfolder]: For 2770/2785 co-relation queries the response was YES. [2021-12-22 13:42:51,173 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. [2021-12-22 13:42:51,179 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 68 selfloop transitions, 23 changer transitions 24/250 dead transitions. [2021-12-22 13:42:51,180 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 250 transitions, 1916 flow [2021-12-22 13:42:51,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 13:42:51,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-22 13:42:51,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2337 transitions. [2021-12-22 13:42:51,183 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7810828877005348 [2021-12-22 13:42:51,183 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2337 transitions. [2021-12-22 13:42:51,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2337 transitions. [2021-12-22 13:42:51,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:51,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2337 transitions. [2021-12-22 13:42:51,186 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) [2021-12-22 13:42:51,190 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) [2021-12-22 13:42:51,208 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) [2021-12-22 13:42:51,208 INFO L186 Difference]: Start difference. First operand has 290 places, 214 transitions, 1200 flow. Second operand 17 states and 2337 transitions. [2021-12-22 13:42:51,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 250 transitions, 1916 flow [2021-12-22 13:42:51,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 250 transitions, 1715 flow, removed 48 selfloop flow, removed 20 redundant places. [2021-12-22 13:42:51,232 INFO L242 Difference]: Finished difference. Result has 273 places, 222 transitions, 1305 flow [2021-12-22 13:42:51,232 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} [2021-12-22 13:42:51,233 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 114 predicate places. [2021-12-22 13:42:51,233 INFO L470 AbstractCegarLoop]: Abstraction has has 273 places, 222 transitions, 1305 flow [2021-12-22 13:42:51,234 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) [2021-12-22 13:42:51,234 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:51,234 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] [2021-12-22 13:42:51,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-22 13:42:51,234 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:51,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:51,235 INFO L85 PathProgramCache]: Analyzing trace with hash -2023806495, now seen corresponding path program 18 times [2021-12-22 13:42:51,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:51,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849591463] [2021-12-22 13:42:51,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:51,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:51,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:51,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:51,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849591463] [2021-12-22 13:42:51,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849591463] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:51,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:51,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:51,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449676479] [2021-12-22 13:42:51,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:51,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:51,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:51,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:51,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:51,313 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:51,314 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) [2021-12-22 13:42:51,314 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:51,314 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:51,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:51,598 INFO L129 PetriNetUnfolder]: 120/774 cut-off events. [2021-12-22 13:42:51,598 INFO L130 PetriNetUnfolder]: For 2129/2144 co-relation queries the response was YES. [2021-12-22 13:42:51,603 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. [2021-12-22 13:42:51,606 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 65 selfloop transitions, 14 changer transitions 28/242 dead transitions. [2021-12-22 13:42:51,606 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 242 transitions, 1679 flow [2021-12-22 13:42:51,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-22 13:42:51,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-22 13:42:51,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2468 transitions. [2021-12-22 13:42:51,608 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7790404040404041 [2021-12-22 13:42:51,608 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2468 transitions. [2021-12-22 13:42:51,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2468 transitions. [2021-12-22 13:42:51,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:51,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2468 transitions. [2021-12-22 13:42:51,611 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) [2021-12-22 13:42:51,613 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) [2021-12-22 13:42:51,614 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) [2021-12-22 13:42:51,614 INFO L186 Difference]: Start difference. First operand has 273 places, 222 transitions, 1305 flow. Second operand 18 states and 2468 transitions. [2021-12-22 13:42:51,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 242 transitions, 1679 flow [2021-12-22 13:42:51,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 242 transitions, 1574 flow, removed 33 selfloop flow, removed 9 redundant places. [2021-12-22 13:42:51,627 INFO L242 Difference]: Finished difference. Result has 278 places, 211 transitions, 1117 flow [2021-12-22 13:42:51,627 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} [2021-12-22 13:42:51,628 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 119 predicate places. [2021-12-22 13:42:51,628 INFO L470 AbstractCegarLoop]: Abstraction has has 278 places, 211 transitions, 1117 flow [2021-12-22 13:42:51,628 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) [2021-12-22 13:42:51,628 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:51,628 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] [2021-12-22 13:42:51,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-22 13:42:51,629 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:51,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:51,629 INFO L85 PathProgramCache]: Analyzing trace with hash -503396899, now seen corresponding path program 19 times [2021-12-22 13:42:51,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:51,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285636208] [2021-12-22 13:42:51,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:51,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:51,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:51,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:51,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285636208] [2021-12-22 13:42:51,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285636208] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:51,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:51,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:51,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650850077] [2021-12-22 13:42:51,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:51,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:51,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:51,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:51,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:51,722 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:51,723 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) [2021-12-22 13:42:51,723 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:51,723 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:51,723 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:51,999 INFO L129 PetriNetUnfolder]: 117/764 cut-off events. [2021-12-22 13:42:51,999 INFO L130 PetriNetUnfolder]: For 1993/2008 co-relation queries the response was YES. [2021-12-22 13:42:52,003 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. [2021-12-22 13:42:52,005 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 59 selfloop transitions, 15 changer transitions 29/238 dead transitions. [2021-12-22 13:42:52,005 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 238 transitions, 1608 flow [2021-12-22 13:42:52,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-22 13:42:52,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-22 13:42:52,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2870 transitions. [2021-12-22 13:42:52,007 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7765151515151515 [2021-12-22 13:42:52,008 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2870 transitions. [2021-12-22 13:42:52,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2870 transitions. [2021-12-22 13:42:52,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:52,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2870 transitions. [2021-12-22 13:42:52,010 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) [2021-12-22 13:42:52,012 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) [2021-12-22 13:42:52,013 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) [2021-12-22 13:42:52,013 INFO L186 Difference]: Start difference. First operand has 278 places, 211 transitions, 1117 flow. Second operand 21 states and 2870 transitions. [2021-12-22 13:42:52,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 238 transitions, 1608 flow [2021-12-22 13:42:52,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 238 transitions, 1480 flow, removed 26 selfloop flow, removed 15 redundant places. [2021-12-22 13:42:52,024 INFO L242 Difference]: Finished difference. Result has 277 places, 208 transitions, 1063 flow [2021-12-22 13:42:52,024 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} [2021-12-22 13:42:52,025 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 118 predicate places. [2021-12-22 13:42:52,025 INFO L470 AbstractCegarLoop]: Abstraction has has 277 places, 208 transitions, 1063 flow [2021-12-22 13:42:52,025 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) [2021-12-22 13:42:52,025 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:52,025 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] [2021-12-22 13:42:52,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-22 13:42:52,025 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:52,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:52,026 INFO L85 PathProgramCache]: Analyzing trace with hash 2089303793, now seen corresponding path program 20 times [2021-12-22 13:42:52,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:52,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916390720] [2021-12-22 13:42:52,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:52,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:52,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:52,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:52,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916390720] [2021-12-22 13:42:52,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916390720] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:52,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:52,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:52,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651882061] [2021-12-22 13:42:52,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:52,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:52,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:52,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:52,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:52,110 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:52,110 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) [2021-12-22 13:42:52,110 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:52,110 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:52,110 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:52,342 INFO L129 PetriNetUnfolder]: 103/675 cut-off events. [2021-12-22 13:42:52,342 INFO L130 PetriNetUnfolder]: For 1580/1595 co-relation queries the response was YES. [2021-12-22 13:42:52,346 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. [2021-12-22 13:42:52,347 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 47 selfloop transitions, 0 changer transitions 39/215 dead transitions. [2021-12-22 13:42:52,347 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 215 transitions, 1254 flow [2021-12-22 13:42:52,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-22 13:42:52,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-22 13:42:52,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2456 transitions. [2021-12-22 13:42:52,349 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7752525252525253 [2021-12-22 13:42:52,349 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2456 transitions. [2021-12-22 13:42:52,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2456 transitions. [2021-12-22 13:42:52,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:52,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2456 transitions. [2021-12-22 13:42:52,352 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) [2021-12-22 13:42:52,353 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) [2021-12-22 13:42:52,353 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) [2021-12-22 13:42:52,353 INFO L186 Difference]: Start difference. First operand has 277 places, 208 transitions, 1063 flow. Second operand 18 states and 2456 transitions. [2021-12-22 13:42:52,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 215 transitions, 1254 flow [2021-12-22 13:42:52,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 215 transitions, 1194 flow, removed 14 selfloop flow, removed 17 redundant places. [2021-12-22 13:42:52,364 INFO L242 Difference]: Finished difference. Result has 267 places, 176 transitions, 712 flow [2021-12-22 13:42:52,364 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} [2021-12-22 13:42:52,368 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 108 predicate places. [2021-12-22 13:42:52,368 INFO L470 AbstractCegarLoop]: Abstraction has has 267 places, 176 transitions, 712 flow [2021-12-22 13:42:52,368 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) [2021-12-22 13:42:52,368 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:52,369 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] [2021-12-22 13:42:52,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-22 13:42:52,369 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:52,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:52,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1809009679, now seen corresponding path program 4 times [2021-12-22 13:42:52,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:52,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568843201] [2021-12-22 13:42:52,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:52,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:52,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:52,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:52,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568843201] [2021-12-22 13:42:52,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568843201] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:52,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:52,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:52,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618625418] [2021-12-22 13:42:52,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:52,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:52,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:52,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:52,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:52,479 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:52,480 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) [2021-12-22 13:42:52,480 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:52,480 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:52,480 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:52,759 INFO L129 PetriNetUnfolder]: 104/666 cut-off events. [2021-12-22 13:42:52,759 INFO L130 PetriNetUnfolder]: For 1495/1503 co-relation queries the response was YES. [2021-12-22 13:42:52,763 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. [2021-12-22 13:42:52,765 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 68 selfloop transitions, 15 changer transitions 33/236 dead transitions. [2021-12-22 13:42:52,765 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 236 transitions, 1385 flow [2021-12-22 13:42:52,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-22 13:42:52,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-22 13:42:52,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2755 transitions. [2021-12-22 13:42:52,767 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7826704545454546 [2021-12-22 13:42:52,767 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2755 transitions. [2021-12-22 13:42:52,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2755 transitions. [2021-12-22 13:42:52,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:52,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2755 transitions. [2021-12-22 13:42:52,770 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) [2021-12-22 13:42:52,771 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) [2021-12-22 13:42:52,772 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) [2021-12-22 13:42:52,772 INFO L186 Difference]: Start difference. First operand has 267 places, 176 transitions, 712 flow. Second operand 20 states and 2755 transitions. [2021-12-22 13:42:52,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 236 transitions, 1385 flow [2021-12-22 13:42:52,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 236 transitions, 1355 flow, removed 14 selfloop flow, removed 10 redundant places. [2021-12-22 13:42:52,780 INFO L242 Difference]: Finished difference. Result has 249 places, 187 transitions, 884 flow [2021-12-22 13:42:52,780 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} [2021-12-22 13:42:52,780 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 90 predicate places. [2021-12-22 13:42:52,781 INFO L470 AbstractCegarLoop]: Abstraction has has 249 places, 187 transitions, 884 flow [2021-12-22 13:42:52,781 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) [2021-12-22 13:42:52,781 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:52,781 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] [2021-12-22 13:42:52,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-22 13:42:52,781 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:52,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:52,781 INFO L85 PathProgramCache]: Analyzing trace with hash -653441541, now seen corresponding path program 5 times [2021-12-22 13:42:52,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:52,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514289504] [2021-12-22 13:42:52,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:52,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:52,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:52,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:52,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514289504] [2021-12-22 13:42:52,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514289504] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:52,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:52,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:52,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762805360] [2021-12-22 13:42:52,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:52,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:52,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:52,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:52,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:52,855 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:52,856 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) [2021-12-22 13:42:52,856 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:52,856 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:52,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:53,086 INFO L129 PetriNetUnfolder]: 105/685 cut-off events. [2021-12-22 13:42:53,086 INFO L130 PetriNetUnfolder]: For 2281/2297 co-relation queries the response was YES. [2021-12-22 13:42:53,090 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. [2021-12-22 13:42:53,092 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 68 selfloop transitions, 23 changer transitions 25/236 dead transitions. [2021-12-22 13:42:53,092 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 236 transitions, 1634 flow [2021-12-22 13:42:53,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-22 13:42:53,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-22 13:42:53,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2207 transitions. [2021-12-22 13:42:53,094 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7837357954545454 [2021-12-22 13:42:53,094 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2207 transitions. [2021-12-22 13:42:53,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2207 transitions. [2021-12-22 13:42:53,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:53,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2207 transitions. [2021-12-22 13:42:53,095 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) [2021-12-22 13:42:53,097 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) [2021-12-22 13:42:53,097 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) [2021-12-22 13:42:53,097 INFO L186 Difference]: Start difference. First operand has 249 places, 187 transitions, 884 flow. Second operand 16 states and 2207 transitions. [2021-12-22 13:42:53,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 236 transitions, 1634 flow [2021-12-22 13:42:53,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 236 transitions, 1519 flow, removed 50 selfloop flow, removed 10 redundant places. [2021-12-22 13:42:53,107 INFO L242 Difference]: Finished difference. Result has 253 places, 197 transitions, 1048 flow [2021-12-22 13:42:53,107 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} [2021-12-22 13:42:53,107 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 94 predicate places. [2021-12-22 13:42:53,107 INFO L470 AbstractCegarLoop]: Abstraction has has 253 places, 197 transitions, 1048 flow [2021-12-22 13:42:53,108 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) [2021-12-22 13:42:53,108 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:53,108 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] [2021-12-22 13:42:53,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-22 13:42:53,108 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:53,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:53,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1109799355, now seen corresponding path program 6 times [2021-12-22 13:42:53,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:53,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474367270] [2021-12-22 13:42:53,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:53,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:53,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:53,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:53,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474367270] [2021-12-22 13:42:53,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474367270] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:53,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:53,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:53,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921696411] [2021-12-22 13:42:53,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:53,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:53,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:53,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:53,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:53,196 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:53,197 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) [2021-12-22 13:42:53,197 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:53,197 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:53,197 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:53,494 INFO L129 PetriNetUnfolder]: 116/711 cut-off events. [2021-12-22 13:42:53,495 INFO L130 PetriNetUnfolder]: For 2481/2501 co-relation queries the response was YES. [2021-12-22 13:42:53,499 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. [2021-12-22 13:42:53,501 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 79 selfloop transitions, 24 changer transitions 33/256 dead transitions. [2021-12-22 13:42:53,501 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 256 transitions, 1940 flow [2021-12-22 13:42:53,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-22 13:42:53,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-22 13:42:53,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2890 transitions. [2021-12-22 13:42:53,503 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7819264069264069 [2021-12-22 13:42:53,503 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2890 transitions. [2021-12-22 13:42:53,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2890 transitions. [2021-12-22 13:42:53,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:53,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2890 transitions. [2021-12-22 13:42:53,505 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) [2021-12-22 13:42:53,507 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) [2021-12-22 13:42:53,507 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) [2021-12-22 13:42:53,508 INFO L186 Difference]: Start difference. First operand has 253 places, 197 transitions, 1048 flow. Second operand 21 states and 2890 transitions. [2021-12-22 13:42:53,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 256 transitions, 1940 flow [2021-12-22 13:42:53,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 256 transitions, 1819 flow, removed 38 selfloop flow, removed 9 redundant places. [2021-12-22 13:42:53,520 INFO L242 Difference]: Finished difference. Result has 273 places, 207 transitions, 1218 flow [2021-12-22 13:42:53,520 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} [2021-12-22 13:42:53,520 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 114 predicate places. [2021-12-22 13:42:53,520 INFO L470 AbstractCegarLoop]: Abstraction has has 273 places, 207 transitions, 1218 flow [2021-12-22 13:42:53,521 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) [2021-12-22 13:42:53,521 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:53,521 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] [2021-12-22 13:42:53,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-22 13:42:53,521 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:53,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:53,521 INFO L85 PathProgramCache]: Analyzing trace with hash 376522777, now seen corresponding path program 7 times [2021-12-22 13:42:53,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:53,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925990189] [2021-12-22 13:42:53,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:53,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:53,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:53,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:53,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:53,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925990189] [2021-12-22 13:42:53,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925990189] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:53,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:53,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:53,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506015808] [2021-12-22 13:42:53,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:53,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:53,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:53,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:53,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:53,604 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:53,605 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) [2021-12-22 13:42:53,605 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:53,605 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:53,605 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:53,905 INFO L129 PetriNetUnfolder]: 110/735 cut-off events. [2021-12-22 13:42:53,905 INFO L130 PetriNetUnfolder]: For 3086/3106 co-relation queries the response was YES. [2021-12-22 13:42:53,909 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. [2021-12-22 13:42:53,911 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 73 selfloop transitions, 30 changer transitions 33/256 dead transitions. [2021-12-22 13:42:53,911 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 256 transitions, 2107 flow [2021-12-22 13:42:53,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-22 13:42:53,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-22 13:42:53,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2750 transitions. [2021-12-22 13:42:53,913 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.78125 [2021-12-22 13:42:53,913 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2750 transitions. [2021-12-22 13:42:53,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2750 transitions. [2021-12-22 13:42:53,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:53,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2750 transitions. [2021-12-22 13:42:53,915 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) [2021-12-22 13:42:53,917 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) [2021-12-22 13:42:53,917 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) [2021-12-22 13:42:53,918 INFO L186 Difference]: Start difference. First operand has 273 places, 207 transitions, 1218 flow. Second operand 20 states and 2750 transitions. [2021-12-22 13:42:53,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 256 transitions, 2107 flow [2021-12-22 13:42:53,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 256 transitions, 1963 flow, removed 58 selfloop flow, removed 12 redundant places. [2021-12-22 13:42:53,931 INFO L242 Difference]: Finished difference. Result has 280 places, 213 transitions, 1345 flow [2021-12-22 13:42:53,931 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} [2021-12-22 13:42:53,931 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 121 predicate places. [2021-12-22 13:42:53,931 INFO L470 AbstractCegarLoop]: Abstraction has has 280 places, 213 transitions, 1345 flow [2021-12-22 13:42:53,932 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) [2021-12-22 13:42:53,932 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:53,932 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] [2021-12-22 13:42:53,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-22 13:42:53,932 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:53,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:53,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1946033001, now seen corresponding path program 8 times [2021-12-22 13:42:53,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:53,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94254869] [2021-12-22 13:42:53,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:53,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:53,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:54,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:54,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:54,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94254869] [2021-12-22 13:42:54,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94254869] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:54,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:54,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:54,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311790027] [2021-12-22 13:42:54,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:54,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:54,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:54,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:54,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:54,009 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:54,010 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) [2021-12-22 13:42:54,010 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:54,010 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:54,010 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:54,340 INFO L129 PetriNetUnfolder]: 106/734 cut-off events. [2021-12-22 13:42:54,340 INFO L130 PetriNetUnfolder]: For 2925/2936 co-relation queries the response was YES. [2021-12-22 13:42:54,355 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. [2021-12-22 13:42:54,370 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 80 selfloop transitions, 29 changer transitions 37/266 dead transitions. [2021-12-22 13:42:54,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 266 transitions, 2220 flow [2021-12-22 13:42:54,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-22 13:42:54,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-22 13:42:54,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3018 transitions. [2021-12-22 13:42:54,373 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7794421487603306 [2021-12-22 13:42:54,373 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3018 transitions. [2021-12-22 13:42:54,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3018 transitions. [2021-12-22 13:42:54,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:54,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3018 transitions. [2021-12-22 13:42:54,376 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) [2021-12-22 13:42:54,378 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) [2021-12-22 13:42:54,378 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) [2021-12-22 13:42:54,378 INFO L186 Difference]: Start difference. First operand has 280 places, 213 transitions, 1345 flow. Second operand 22 states and 3018 transitions. [2021-12-22 13:42:54,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 266 transitions, 2220 flow [2021-12-22 13:42:54,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 266 transitions, 2117 flow, removed 29 selfloop flow, removed 12 redundant places. [2021-12-22 13:42:54,392 INFO L242 Difference]: Finished difference. Result has 290 places, 212 transitions, 1378 flow [2021-12-22 13:42:54,392 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} [2021-12-22 13:42:54,393 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 131 predicate places. [2021-12-22 13:42:54,393 INFO L470 AbstractCegarLoop]: Abstraction has has 290 places, 212 transitions, 1378 flow [2021-12-22 13:42:54,393 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) [2021-12-22 13:42:54,394 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:54,394 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] [2021-12-22 13:42:54,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-22 13:42:54,394 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:54,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:54,394 INFO L85 PathProgramCache]: Analyzing trace with hash -103991529, now seen corresponding path program 9 times [2021-12-22 13:42:54,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:54,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038996290] [2021-12-22 13:42:54,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:54,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:54,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:54,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:54,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038996290] [2021-12-22 13:42:54,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038996290] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:54,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:54,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:54,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661910795] [2021-12-22 13:42:54,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:54,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:54,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:54,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:54,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:54,482 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:54,482 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) [2021-12-22 13:42:54,482 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:54,483 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:54,483 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:54,702 INFO L129 PetriNetUnfolder]: 90/657 cut-off events. [2021-12-22 13:42:54,702 INFO L130 PetriNetUnfolder]: For 2536/2545 co-relation queries the response was YES. [2021-12-22 13:42:54,706 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. [2021-12-22 13:42:54,708 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 71 selfloop transitions, 17 changer transitions 34/242 dead transitions. [2021-12-22 13:42:54,708 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 242 transitions, 1906 flow [2021-12-22 13:42:54,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-22 13:42:54,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-22 13:42:54,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2470 transitions. [2021-12-22 13:42:54,710 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7796717171717171 [2021-12-22 13:42:54,710 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2470 transitions. [2021-12-22 13:42:54,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2470 transitions. [2021-12-22 13:42:54,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:54,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2470 transitions. [2021-12-22 13:42:54,712 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) [2021-12-22 13:42:54,714 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) [2021-12-22 13:42:54,714 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) [2021-12-22 13:42:54,714 INFO L186 Difference]: Start difference. First operand has 290 places, 212 transitions, 1378 flow. Second operand 18 states and 2470 transitions. [2021-12-22 13:42:54,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 242 transitions, 1906 flow [2021-12-22 13:42:54,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 242 transitions, 1776 flow, removed 40 selfloop flow, removed 17 redundant places. [2021-12-22 13:42:54,726 INFO L242 Difference]: Finished difference. Result has 283 places, 197 transitions, 1117 flow [2021-12-22 13:42:54,726 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} [2021-12-22 13:42:54,726 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 124 predicate places. [2021-12-22 13:42:54,727 INFO L470 AbstractCegarLoop]: Abstraction has has 283 places, 197 transitions, 1117 flow [2021-12-22 13:42:54,727 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) [2021-12-22 13:42:54,727 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:54,727 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] [2021-12-22 13:42:54,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-22 13:42:54,727 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:54,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:54,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1878967331, now seen corresponding path program 10 times [2021-12-22 13:42:54,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:54,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181820924] [2021-12-22 13:42:54,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:54,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:54,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:54,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:54,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181820924] [2021-12-22 13:42:54,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181820924] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:54,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:54,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:54,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638547955] [2021-12-22 13:42:54,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:54,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:54,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:54,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:54,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:54,806 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:54,806 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) [2021-12-22 13:42:54,807 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:54,807 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:54,807 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:55,092 INFO L129 PetriNetUnfolder]: 86/632 cut-off events. [2021-12-22 13:42:55,093 INFO L130 PetriNetUnfolder]: For 2092/2110 co-relation queries the response was YES. [2021-12-22 13:42:55,096 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. [2021-12-22 13:42:55,097 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 63 selfloop transitions, 23 changer transitions 30/236 dead transitions. [2021-12-22 13:42:55,097 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 236 transitions, 1792 flow [2021-12-22 13:42:55,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-22 13:42:55,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-22 13:42:55,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2480 transitions. [2021-12-22 13:42:55,099 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7828282828282829 [2021-12-22 13:42:55,099 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2480 transitions. [2021-12-22 13:42:55,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2480 transitions. [2021-12-22 13:42:55,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:55,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2480 transitions. [2021-12-22 13:42:55,101 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) [2021-12-22 13:42:55,103 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) [2021-12-22 13:42:55,103 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) [2021-12-22 13:42:55,103 INFO L186 Difference]: Start difference. First operand has 283 places, 197 transitions, 1117 flow. Second operand 18 states and 2480 transitions. [2021-12-22 13:42:55,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 236 transitions, 1792 flow [2021-12-22 13:42:55,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 236 transitions, 1654 flow, removed 27 selfloop flow, removed 15 redundant places. [2021-12-22 13:42:55,113 INFO L242 Difference]: Finished difference. Result has 269 places, 200 transitions, 1152 flow [2021-12-22 13:42:55,113 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} [2021-12-22 13:42:55,114 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 110 predicate places. [2021-12-22 13:42:55,114 INFO L470 AbstractCegarLoop]: Abstraction has has 269 places, 200 transitions, 1152 flow [2021-12-22 13:42:55,114 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) [2021-12-22 13:42:55,114 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:55,114 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] [2021-12-22 13:42:55,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-22 13:42:55,114 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:55,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:55,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1313153469, now seen corresponding path program 11 times [2021-12-22 13:42:55,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:55,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152291801] [2021-12-22 13:42:55,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:55,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:55,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:55,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:55,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152291801] [2021-12-22 13:42:55,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152291801] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:55,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:55,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:55,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345370481] [2021-12-22 13:42:55,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:55,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:55,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:55,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:55,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:55,193 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:55,194 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) [2021-12-22 13:42:55,194 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:55,194 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:55,194 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:55,434 INFO L129 PetriNetUnfolder]: 80/606 cut-off events. [2021-12-22 13:42:55,435 INFO L130 PetriNetUnfolder]: For 1769/1778 co-relation queries the response was YES. [2021-12-22 13:42:55,438 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. [2021-12-22 13:42:55,440 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 60 selfloop transitions, 15 changer transitions 29/224 dead transitions. [2021-12-22 13:42:55,440 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 224 transitions, 1592 flow [2021-12-22 13:42:55,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-22 13:42:55,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-22 13:42:55,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2473 transitions. [2021-12-22 13:42:55,442 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7806186868686869 [2021-12-22 13:42:55,442 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2473 transitions. [2021-12-22 13:42:55,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2473 transitions. [2021-12-22 13:42:55,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:55,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2473 transitions. [2021-12-22 13:42:55,444 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) [2021-12-22 13:42:55,446 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) [2021-12-22 13:42:55,446 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) [2021-12-22 13:42:55,446 INFO L186 Difference]: Start difference. First operand has 269 places, 200 transitions, 1152 flow. Second operand 18 states and 2473 transitions. [2021-12-22 13:42:55,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 224 transitions, 1592 flow [2021-12-22 13:42:55,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 224 transitions, 1499 flow, removed 23 selfloop flow, removed 8 redundant places. [2021-12-22 13:42:55,457 INFO L242 Difference]: Finished difference. Result has 277 places, 191 transitions, 1006 flow [2021-12-22 13:42:55,457 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} [2021-12-22 13:42:55,457 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 118 predicate places. [2021-12-22 13:42:55,457 INFO L470 AbstractCegarLoop]: Abstraction has has 277 places, 191 transitions, 1006 flow [2021-12-22 13:42:55,458 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) [2021-12-22 13:42:55,458 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:55,458 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] [2021-12-22 13:42:55,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-22 13:42:55,458 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:55,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:55,459 INFO L85 PathProgramCache]: Analyzing trace with hash -602577015, now seen corresponding path program 12 times [2021-12-22 13:42:55,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:55,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628962538] [2021-12-22 13:42:55,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:55,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:55,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:55,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:55,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628962538] [2021-12-22 13:42:55,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628962538] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:55,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:55,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:55,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869593080] [2021-12-22 13:42:55,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:55,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:55,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:55,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:55,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:55,537 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:55,537 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) [2021-12-22 13:42:55,537 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:55,537 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:55,537 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:55,784 INFO L129 PetriNetUnfolder]: 68/560 cut-off events. [2021-12-22 13:42:55,784 INFO L130 PetriNetUnfolder]: For 1427/1445 co-relation queries the response was YES. [2021-12-22 13:42:55,787 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. [2021-12-22 13:42:55,788 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 51 selfloop transitions, 3 changer transitions 32/206 dead transitions. [2021-12-22 13:42:55,788 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 206 transitions, 1271 flow [2021-12-22 13:42:55,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 13:42:55,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-22 13:42:55,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2329 transitions. [2021-12-22 13:42:55,790 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7784090909090909 [2021-12-22 13:42:55,790 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2329 transitions. [2021-12-22 13:42:55,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2329 transitions. [2021-12-22 13:42:55,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:55,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2329 transitions. [2021-12-22 13:42:55,792 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) [2021-12-22 13:42:55,794 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) [2021-12-22 13:42:55,794 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) [2021-12-22 13:42:55,794 INFO L186 Difference]: Start difference. First operand has 277 places, 191 transitions, 1006 flow. Second operand 17 states and 2329 transitions. [2021-12-22 13:42:55,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 206 transitions, 1271 flow [2021-12-22 13:42:55,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 206 transitions, 1181 flow, removed 19 selfloop flow, removed 18 redundant places. [2021-12-22 13:42:55,802 INFO L242 Difference]: Finished difference. Result has 263 places, 171 transitions, 690 flow [2021-12-22 13:42:55,802 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} [2021-12-22 13:42:55,803 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 104 predicate places. [2021-12-22 13:42:55,803 INFO L470 AbstractCegarLoop]: Abstraction has has 263 places, 171 transitions, 690 flow [2021-12-22 13:42:55,803 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) [2021-12-22 13:42:55,803 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:55,803 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] [2021-12-22 13:42:55,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-22 13:42:55,804 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:55,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:55,804 INFO L85 PathProgramCache]: Analyzing trace with hash -97134579, now seen corresponding path program 13 times [2021-12-22 13:42:55,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:55,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699152990] [2021-12-22 13:42:55,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:55,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:55,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:55,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:55,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699152990] [2021-12-22 13:42:55,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699152990] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:55,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:55,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:55,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888018333] [2021-12-22 13:42:55,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:55,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:55,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:55,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:55,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:55,884 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:55,884 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) [2021-12-22 13:42:55,884 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:55,884 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:55,884 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:56,165 INFO L129 PetriNetUnfolder]: 77/611 cut-off events. [2021-12-22 13:42:56,166 INFO L130 PetriNetUnfolder]: For 1367/1374 co-relation queries the response was YES. [2021-12-22 13:42:56,169 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. [2021-12-22 13:42:56,170 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 56 selfloop transitions, 21 changer transitions 33/230 dead transitions. [2021-12-22 13:42:56,170 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 230 transitions, 1488 flow [2021-12-22 13:42:56,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-22 13:42:56,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-22 13:42:56,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3019 transitions. [2021-12-22 13:42:56,172 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7797004132231405 [2021-12-22 13:42:56,172 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3019 transitions. [2021-12-22 13:42:56,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3019 transitions. [2021-12-22 13:42:56,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:56,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3019 transitions. [2021-12-22 13:42:56,175 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) [2021-12-22 13:42:56,177 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) [2021-12-22 13:42:56,177 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) [2021-12-22 13:42:56,177 INFO L186 Difference]: Start difference. First operand has 263 places, 171 transitions, 690 flow. Second operand 22 states and 3019 transitions. [2021-12-22 13:42:56,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 230 transitions, 1488 flow [2021-12-22 13:42:56,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 230 transitions, 1341 flow, removed 32 selfloop flow, removed 19 redundant places. [2021-12-22 13:42:56,185 INFO L242 Difference]: Finished difference. Result has 250 places, 183 transitions, 848 flow [2021-12-22 13:42:56,185 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} [2021-12-22 13:42:56,185 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 91 predicate places. [2021-12-22 13:42:56,186 INFO L470 AbstractCegarLoop]: Abstraction has has 250 places, 183 transitions, 848 flow [2021-12-22 13:42:56,186 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) [2021-12-22 13:42:56,186 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:56,186 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] [2021-12-22 13:42:56,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-22 13:42:56,186 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:56,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:56,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1585175349, now seen corresponding path program 14 times [2021-12-22 13:42:56,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:56,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525391324] [2021-12-22 13:42:56,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:56,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:56,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:56,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:56,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525391324] [2021-12-22 13:42:56,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525391324] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:56,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:56,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:56,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927288966] [2021-12-22 13:42:56,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:56,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:56,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:56,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:56,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:56,272 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:56,273 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) [2021-12-22 13:42:56,273 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:56,273 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:56,273 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:56,523 INFO L129 PetriNetUnfolder]: 79/605 cut-off events. [2021-12-22 13:42:56,523 INFO L130 PetriNetUnfolder]: For 1559/1566 co-relation queries the response was YES. [2021-12-22 13:42:56,529 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. [2021-12-22 13:42:56,531 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 54 selfloop transitions, 27 changer transitions 28/229 dead transitions. [2021-12-22 13:42:56,531 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 229 transitions, 1534 flow [2021-12-22 13:42:56,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 13:42:56,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-22 13:42:56,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2341 transitions. [2021-12-22 13:42:56,534 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7824197860962567 [2021-12-22 13:42:56,534 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2341 transitions. [2021-12-22 13:42:56,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2341 transitions. [2021-12-22 13:42:56,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:56,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2341 transitions. [2021-12-22 13:42:56,536 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) [2021-12-22 13:42:56,538 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) [2021-12-22 13:42:56,538 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) [2021-12-22 13:42:56,538 INFO L186 Difference]: Start difference. First operand has 250 places, 183 transitions, 848 flow. Second operand 17 states and 2341 transitions. [2021-12-22 13:42:56,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 229 transitions, 1534 flow [2021-12-22 13:42:56,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 229 transitions, 1451 flow, removed 35 selfloop flow, removed 11 redundant places. [2021-12-22 13:42:56,547 INFO L242 Difference]: Finished difference. Result has 251 places, 191 transitions, 1002 flow [2021-12-22 13:42:56,548 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} [2021-12-22 13:42:56,549 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 92 predicate places. [2021-12-22 13:42:56,549 INFO L470 AbstractCegarLoop]: Abstraction has has 251 places, 191 transitions, 1002 flow [2021-12-22 13:42:56,550 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) [2021-12-22 13:42:56,550 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:56,550 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] [2021-12-22 13:42:56,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-22 13:42:56,551 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:56,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:56,551 INFO L85 PathProgramCache]: Analyzing trace with hash -941495501, now seen corresponding path program 15 times [2021-12-22 13:42:56,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:56,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953491256] [2021-12-22 13:42:56,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:56,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:56,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:56,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:56,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953491256] [2021-12-22 13:42:56,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953491256] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:56,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:56,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:56,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562341165] [2021-12-22 13:42:56,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:56,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:56,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:56,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:56,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:56,655 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:56,656 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) [2021-12-22 13:42:56,656 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:56,656 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:56,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:56,866 INFO L129 PetriNetUnfolder]: 77/615 cut-off events. [2021-12-22 13:42:56,866 INFO L130 PetriNetUnfolder]: For 1691/1698 co-relation queries the response was YES. [2021-12-22 13:42:56,869 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. [2021-12-22 13:42:56,870 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 56 selfloop transitions, 25 changer transitions 31/232 dead transitions. [2021-12-22 13:42:56,871 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 232 transitions, 1623 flow [2021-12-22 13:42:56,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-22 13:42:56,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-22 13:42:56,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2210 transitions. [2021-12-22 13:42:56,872 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7848011363636364 [2021-12-22 13:42:56,872 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2210 transitions. [2021-12-22 13:42:56,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2210 transitions. [2021-12-22 13:42:56,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:56,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2210 transitions. [2021-12-22 13:42:56,874 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) [2021-12-22 13:42:56,875 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) [2021-12-22 13:42:56,876 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) [2021-12-22 13:42:56,876 INFO L186 Difference]: Start difference. First operand has 251 places, 191 transitions, 1002 flow. Second operand 16 states and 2210 transitions. [2021-12-22 13:42:56,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 232 transitions, 1623 flow [2021-12-22 13:42:56,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 232 transitions, 1525 flow, removed 22 selfloop flow, removed 9 redundant places. [2021-12-22 13:42:56,884 INFO L242 Difference]: Finished difference. Result has 257 places, 195 transitions, 1053 flow [2021-12-22 13:42:56,884 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} [2021-12-22 13:42:56,885 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 98 predicate places. [2021-12-22 13:42:56,885 INFO L470 AbstractCegarLoop]: Abstraction has has 257 places, 195 transitions, 1053 flow [2021-12-22 13:42:56,885 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) [2021-12-22 13:42:56,885 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:56,885 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] [2021-12-22 13:42:56,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-22 13:42:56,886 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:56,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:56,887 INFO L85 PathProgramCache]: Analyzing trace with hash -2079824505, now seen corresponding path program 16 times [2021-12-22 13:42:56,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:56,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905227749] [2021-12-22 13:42:56,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:56,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:56,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:56,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:56,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905227749] [2021-12-22 13:42:56,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905227749] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:56,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:56,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:56,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192164783] [2021-12-22 13:42:56,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:56,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:56,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:56,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:56,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:56,968 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:56,968 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) [2021-12-22 13:42:56,969 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:56,969 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:56,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:57,219 INFO L129 PetriNetUnfolder]: 75/609 cut-off events. [2021-12-22 13:42:57,219 INFO L130 PetriNetUnfolder]: For 1833/1838 co-relation queries the response was YES. [2021-12-22 13:42:57,222 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. [2021-12-22 13:42:57,224 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 61 selfloop transitions, 25 changer transitions 33/239 dead transitions. [2021-12-22 13:42:57,224 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 239 transitions, 1801 flow [2021-12-22 13:42:57,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-22 13:42:57,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-22 13:42:57,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2882 transitions. [2021-12-22 13:42:57,226 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7797619047619048 [2021-12-22 13:42:57,226 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2882 transitions. [2021-12-22 13:42:57,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2882 transitions. [2021-12-22 13:42:57,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:57,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2882 transitions. [2021-12-22 13:42:57,228 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) [2021-12-22 13:42:57,230 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) [2021-12-22 13:42:57,230 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) [2021-12-22 13:42:57,230 INFO L186 Difference]: Start difference. First operand has 257 places, 195 transitions, 1053 flow. Second operand 21 states and 2882 transitions. [2021-12-22 13:42:57,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 239 transitions, 1801 flow [2021-12-22 13:42:57,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 239 transitions, 1700 flow, removed 24 selfloop flow, removed 8 redundant places. [2021-12-22 13:42:57,240 INFO L242 Difference]: Finished difference. Result has 275 places, 197 transitions, 1135 flow [2021-12-22 13:42:57,241 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} [2021-12-22 13:42:57,241 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 116 predicate places. [2021-12-22 13:42:57,241 INFO L470 AbstractCegarLoop]: Abstraction has has 275 places, 197 transitions, 1135 flow [2021-12-22 13:42:57,242 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) [2021-12-22 13:42:57,242 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:57,242 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] [2021-12-22 13:42:57,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-22 13:42:57,242 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:57,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:57,243 INFO L85 PathProgramCache]: Analyzing trace with hash 155303969, now seen corresponding path program 17 times [2021-12-22 13:42:57,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:57,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368473703] [2021-12-22 13:42:57,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:57,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:57,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:57,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:57,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368473703] [2021-12-22 13:42:57,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368473703] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:57,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:57,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:57,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915923189] [2021-12-22 13:42:57,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:57,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:57,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:57,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:57,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:57,332 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:57,333 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) [2021-12-22 13:42:57,333 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:57,333 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:57,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:57,556 INFO L129 PetriNetUnfolder]: 65/556 cut-off events. [2021-12-22 13:42:57,556 INFO L130 PetriNetUnfolder]: For 1694/1701 co-relation queries the response was YES. [2021-12-22 13:42:57,559 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. [2021-12-22 13:42:57,560 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 54 selfloop transitions, 13 changer transitions 33/220 dead transitions. [2021-12-22 13:42:57,560 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 220 transitions, 1535 flow [2021-12-22 13:42:57,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-22 13:42:57,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-22 13:42:57,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2469 transitions. [2021-12-22 13:42:57,562 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7793560606060606 [2021-12-22 13:42:57,562 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2469 transitions. [2021-12-22 13:42:57,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2469 transitions. [2021-12-22 13:42:57,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:57,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2469 transitions. [2021-12-22 13:42:57,564 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) [2021-12-22 13:42:57,565 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) [2021-12-22 13:42:57,565 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) [2021-12-22 13:42:57,565 INFO L186 Difference]: Start difference. First operand has 275 places, 197 transitions, 1135 flow. Second operand 18 states and 2469 transitions. [2021-12-22 13:42:57,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 220 transitions, 1535 flow [2021-12-22 13:42:57,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 220 transitions, 1420 flow, removed 33 selfloop flow, removed 16 redundant places. [2021-12-22 13:42:57,574 INFO L242 Difference]: Finished difference. Result has 270 places, 182 transitions, 900 flow [2021-12-22 13:42:57,574 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} [2021-12-22 13:42:57,574 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 111 predicate places. [2021-12-22 13:42:57,575 INFO L470 AbstractCegarLoop]: Abstraction has has 270 places, 182 transitions, 900 flow [2021-12-22 13:42:57,575 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) [2021-12-22 13:42:57,575 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:57,575 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] [2021-12-22 13:42:57,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-22 13:42:57,575 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:57,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:57,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1872184799, now seen corresponding path program 18 times [2021-12-22 13:42:57,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:57,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622031756] [2021-12-22 13:42:57,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:57,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:57,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:57,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:57,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622031756] [2021-12-22 13:42:57,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622031756] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:57,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:57,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:57,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692496568] [2021-12-22 13:42:57,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:57,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:57,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:57,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:57,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:57,653 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:57,653 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) [2021-12-22 13:42:57,653 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:57,653 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:57,653 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:57,903 INFO L129 PetriNetUnfolder]: 61/550 cut-off events. [2021-12-22 13:42:57,903 INFO L130 PetriNetUnfolder]: For 1454/1461 co-relation queries the response was YES. [2021-12-22 13:42:57,905 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. [2021-12-22 13:42:57,906 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 45 selfloop transitions, 12 changer transitions 32/209 dead transitions. [2021-12-22 13:42:57,906 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 209 transitions, 1300 flow [2021-12-22 13:42:57,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-22 13:42:57,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-22 13:42:57,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2471 transitions. [2021-12-22 13:42:57,908 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7799873737373737 [2021-12-22 13:42:57,908 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2471 transitions. [2021-12-22 13:42:57,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2471 transitions. [2021-12-22 13:42:57,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:57,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2471 transitions. [2021-12-22 13:42:57,910 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) [2021-12-22 13:42:57,912 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) [2021-12-22 13:42:57,912 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) [2021-12-22 13:42:57,912 INFO L186 Difference]: Start difference. First operand has 270 places, 182 transitions, 900 flow. Second operand 18 states and 2471 transitions. [2021-12-22 13:42:57,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 209 transitions, 1300 flow [2021-12-22 13:42:57,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 209 transitions, 1194 flow, removed 17 selfloop flow, removed 19 redundant places. [2021-12-22 13:42:57,919 INFO L242 Difference]: Finished difference. Result has 253 places, 174 transitions, 758 flow [2021-12-22 13:42:57,919 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} [2021-12-22 13:42:57,919 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 94 predicate places. [2021-12-22 13:42:57,919 INFO L470 AbstractCegarLoop]: Abstraction has has 253 places, 174 transitions, 758 flow [2021-12-22 13:42:57,920 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) [2021-12-22 13:42:57,920 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:57,920 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] [2021-12-22 13:42:57,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-22 13:42:57,920 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:57,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:57,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1588571595, now seen corresponding path program 19 times [2021-12-22 13:42:57,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:57,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512601916] [2021-12-22 13:42:57,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:57,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:58,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:58,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:58,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512601916] [2021-12-22 13:42:58,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512601916] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:58,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:58,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:58,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533767473] [2021-12-22 13:42:58,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:58,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:58,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:58,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:58,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:58,006 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:58,006 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) [2021-12-22 13:42:58,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:58,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:58,006 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:58,199 INFO L129 PetriNetUnfolder]: 57/533 cut-off events. [2021-12-22 13:42:58,199 INFO L130 PetriNetUnfolder]: For 1071/1076 co-relation queries the response was YES. [2021-12-22 13:42:58,202 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. [2021-12-22 13:42:58,203 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 40 selfloop transitions, 17 changer transitions 32/209 dead transitions. [2021-12-22 13:42:58,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 209 transitions, 1272 flow [2021-12-22 13:42:58,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 13:42:58,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-22 13:42:58,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2339 transitions. [2021-12-22 13:42:58,205 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7817513368983957 [2021-12-22 13:42:58,205 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2339 transitions. [2021-12-22 13:42:58,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2339 transitions. [2021-12-22 13:42:58,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:58,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2339 transitions. [2021-12-22 13:42:58,207 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) [2021-12-22 13:42:58,208 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) [2021-12-22 13:42:58,208 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) [2021-12-22 13:42:58,209 INFO L186 Difference]: Start difference. First operand has 253 places, 174 transitions, 758 flow. Second operand 17 states and 2339 transitions. [2021-12-22 13:42:58,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 209 transitions, 1272 flow [2021-12-22 13:42:58,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 209 transitions, 1171 flow, removed 25 selfloop flow, removed 15 redundant places. [2021-12-22 13:42:58,215 INFO L242 Difference]: Finished difference. Result has 245 places, 175 transitions, 778 flow [2021-12-22 13:42:58,215 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} [2021-12-22 13:42:58,215 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 86 predicate places. [2021-12-22 13:42:58,215 INFO L470 AbstractCegarLoop]: Abstraction has has 245 places, 175 transitions, 778 flow [2021-12-22 13:42:58,216 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) [2021-12-22 13:42:58,216 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:58,216 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] [2021-12-22 13:42:58,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-22 13:42:58,216 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:58,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:58,216 INFO L85 PathProgramCache]: Analyzing trace with hash -369122677, now seen corresponding path program 20 times [2021-12-22 13:42:58,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:58,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994545022] [2021-12-22 13:42:58,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:58,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:58,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:58,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:58,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994545022] [2021-12-22 13:42:58,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994545022] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:58,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:58,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:42:58,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576859102] [2021-12-22 13:42:58,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:58,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:42:58,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:58,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:42:58,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:42:58,298 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-22 13:42:58,299 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) [2021-12-22 13:42:58,299 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:58,299 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-22 13:42:58,299 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:58,502 INFO L129 PetriNetUnfolder]: 46/448 cut-off events. [2021-12-22 13:42:58,502 INFO L130 PetriNetUnfolder]: For 740/745 co-relation queries the response was YES. [2021-12-22 13:42:58,504 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. [2021-12-22 13:42:58,505 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 29 selfloop transitions, 0 changer transitions 43/186 dead transitions. [2021-12-22 13:42:58,505 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 186 transitions, 950 flow [2021-12-22 13:42:58,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-22 13:42:58,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-22 13:42:58,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2459 transitions. [2021-12-22 13:42:58,524 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7761994949494949 [2021-12-22 13:42:58,524 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2459 transitions. [2021-12-22 13:42:58,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2459 transitions. [2021-12-22 13:42:58,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:58,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2459 transitions. [2021-12-22 13:42:58,526 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) [2021-12-22 13:42:58,530 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) [2021-12-22 13:42:58,531 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) [2021-12-22 13:42:58,531 INFO L186 Difference]: Start difference. First operand has 245 places, 175 transitions, 778 flow. Second operand 18 states and 2459 transitions. [2021-12-22 13:42:58,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 186 transitions, 950 flow [2021-12-22 13:42:58,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 186 transitions, 864 flow, removed 23 selfloop flow, removed 13 redundant places. [2021-12-22 13:42:58,551 INFO L242 Difference]: Finished difference. Result has 244 places, 143 transitions, 402 flow [2021-12-22 13:42:58,552 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} [2021-12-22 13:42:58,553 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 85 predicate places. [2021-12-22 13:42:58,554 INFO L470 AbstractCegarLoop]: Abstraction has has 244 places, 143 transitions, 402 flow [2021-12-22 13:42:58,554 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) [2021-12-22 13:42:58,554 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:58,554 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] [2021-12-22 13:42:58,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-12-22 13:42:58,555 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:58,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:58,555 INFO L85 PathProgramCache]: Analyzing trace with hash -214406091, now seen corresponding path program 1 times [2021-12-22 13:42:58,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:58,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068674266] [2021-12-22 13:42:58,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:58,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:59,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:59,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:59,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068674266] [2021-12-22 13:42:59,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068674266] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:59,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:59,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-22 13:42:59,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276021232] [2021-12-22 13:42:59,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:59,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-22 13:42:59,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:59,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-22 13:42:59,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-12-22 13:42:59,067 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-22 13:42:59,068 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) [2021-12-22 13:42:59,068 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:59,068 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-22 13:42:59,068 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:43:01,616 INFO L129 PetriNetUnfolder]: 367/1337 cut-off events. [2021-12-22 13:43:01,616 INFO L130 PetriNetUnfolder]: For 1775/1777 co-relation queries the response was YES. [2021-12-22 13:43:01,621 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. [2021-12-22 13:43:01,624 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 192 selfloop transitions, 33 changer transitions 49/361 dead transitions. [2021-12-22 13:43:01,624 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 361 transitions, 1995 flow [2021-12-22 13:43:01,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-12-22 13:43:01,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-12-22 13:43:01,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 4974 transitions. [2021-12-22 13:43:01,627 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6423037190082644 [2021-12-22 13:43:01,627 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 4974 transitions. [2021-12-22 13:43:01,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 4974 transitions. [2021-12-22 13:43:01,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:43:01,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 4974 transitions. [2021-12-22 13:43:01,631 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) [2021-12-22 13:43:01,634 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) [2021-12-22 13:43:01,635 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) [2021-12-22 13:43:01,635 INFO L186 Difference]: Start difference. First operand has 244 places, 143 transitions, 402 flow. Second operand 44 states and 4974 transitions. [2021-12-22 13:43:01,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 361 transitions, 1995 flow [2021-12-22 13:43:01,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 361 transitions, 1819 flow, removed 87 selfloop flow, removed 11 redundant places. [2021-12-22 13:43:01,643 INFO L242 Difference]: Finished difference. Result has 265 places, 166 transitions, 709 flow [2021-12-22 13:43:01,643 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} [2021-12-22 13:43:01,643 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 106 predicate places. [2021-12-22 13:43:01,644 INFO L470 AbstractCegarLoop]: Abstraction has has 265 places, 166 transitions, 709 flow [2021-12-22 13:43:01,644 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) [2021-12-22 13:43:01,644 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:43:01,645 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] [2021-12-22 13:43:01,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-12-22 13:43:01,645 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:43:01,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:43:01,645 INFO L85 PathProgramCache]: Analyzing trace with hash 444470777, now seen corresponding path program 2 times [2021-12-22 13:43:01,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:43:01,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3367195] [2021-12-22 13:43:01,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:43:01,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:43:01,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:43:02,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:43:02,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:43:02,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3367195] [2021-12-22 13:43:02,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3367195] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:43:02,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:43:02,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-22 13:43:02,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748285700] [2021-12-22 13:43:02,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:43:02,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-22 13:43:02,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:43:02,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-22 13:43:02,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2021-12-22 13:43:02,049 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-22 13:43:02,062 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) [2021-12-22 13:43:02,062 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:43:02,062 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-22 13:43:02,062 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:43:04,566 INFO L129 PetriNetUnfolder]: 812/2783 cut-off events. [2021-12-22 13:43:04,566 INFO L130 PetriNetUnfolder]: For 11971/11973 co-relation queries the response was YES. [2021-12-22 13:43:04,581 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. [2021-12-22 13:43:04,604 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 283 selfloop transitions, 32 changer transitions 39/441 dead transitions. [2021-12-22 13:43:04,604 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 441 transitions, 3132 flow [2021-12-22 13:43:04,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-22 13:43:04,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-12-22 13:43:04,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4065 transitions. [2021-12-22 13:43:04,609 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6599025974025974 [2021-12-22 13:43:04,613 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4065 transitions. [2021-12-22 13:43:04,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4065 transitions. [2021-12-22 13:43:04,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:43:04,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4065 transitions. [2021-12-22 13:43:04,617 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) [2021-12-22 13:43:04,619 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) [2021-12-22 13:43:04,636 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) [2021-12-22 13:43:04,636 INFO L186 Difference]: Start difference. First operand has 265 places, 166 transitions, 709 flow. Second operand 35 states and 4065 transitions. [2021-12-22 13:43:04,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 441 transitions, 3132 flow [2021-12-22 13:43:04,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 441 transitions, 2647 flow, removed 215 selfloop flow, removed 27 redundant places. [2021-12-22 13:43:04,666 INFO L242 Difference]: Finished difference. Result has 278 places, 197 transitions, 1037 flow [2021-12-22 13:43:04,667 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} [2021-12-22 13:43:04,667 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 119 predicate places. [2021-12-22 13:43:04,667 INFO L470 AbstractCegarLoop]: Abstraction has has 278 places, 197 transitions, 1037 flow [2021-12-22 13:43:04,683 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) [2021-12-22 13:43:04,684 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:43:04,684 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] [2021-12-22 13:43:04,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-12-22 13:43:04,684 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:43:04,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:43:04,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1628285391, now seen corresponding path program 3 times [2021-12-22 13:43:04,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:43:04,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802082637] [2021-12-22 13:43:04,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:43:04,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:43:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:43:05,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:43:05,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:43:05,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802082637] [2021-12-22 13:43:05,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802082637] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:43:05,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:43:05,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-22 13:43:05,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843693068] [2021-12-22 13:43:05,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:43:05,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-22 13:43:05,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:43:05,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-22 13:43:05,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2021-12-22 13:43:05,148 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-22 13:43:05,149 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) [2021-12-22 13:43:05,149 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:43:05,149 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-22 13:43:05,150 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:43:07,647 INFO L129 PetriNetUnfolder]: 840/2945 cut-off events. [2021-12-22 13:43:07,647 INFO L130 PetriNetUnfolder]: For 11889/11894 co-relation queries the response was YES. [2021-12-22 13:43:07,665 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. [2021-12-22 13:43:07,671 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 209 selfloop transitions, 66 changer transitions 40/402 dead transitions. [2021-12-22 13:43:07,672 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 402 transitions, 3045 flow [2021-12-22 13:43:07,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-22 13:43:07,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-12-22 13:43:07,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3991 transitions. [2021-12-22 13:43:07,674 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6478896103896103 [2021-12-22 13:43:07,674 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3991 transitions. [2021-12-22 13:43:07,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3991 transitions. [2021-12-22 13:43:07,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:43:07,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3991 transitions. [2021-12-22 13:43:07,677 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) [2021-12-22 13:43:07,680 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) [2021-12-22 13:43:07,680 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) [2021-12-22 13:43:07,680 INFO L186 Difference]: Start difference. First operand has 278 places, 197 transitions, 1037 flow. Second operand 35 states and 3991 transitions. [2021-12-22 13:43:07,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 402 transitions, 3045 flow [2021-12-22 13:43:07,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 402 transitions, 2763 flow, removed 140 selfloop flow, removed 16 redundant places. [2021-12-22 13:43:07,710 INFO L242 Difference]: Finished difference. Result has 305 places, 219 transitions, 1311 flow [2021-12-22 13:43:07,710 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} [2021-12-22 13:43:07,710 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 146 predicate places. [2021-12-22 13:43:07,710 INFO L470 AbstractCegarLoop]: Abstraction has has 305 places, 219 transitions, 1311 flow [2021-12-22 13:43:07,711 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) [2021-12-22 13:43:07,711 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:43:07,711 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] [2021-12-22 13:43:07,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-12-22 13:43:07,711 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:43:07,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:43:07,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1607873181, now seen corresponding path program 4 times [2021-12-22 13:43:07,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:43:07,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317977879] [2021-12-22 13:43:07,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:43:07,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:43:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:43:08,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:43:08,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:43:08,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317977879] [2021-12-22 13:43:08,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317977879] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:43:08,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:43:08,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-22 13:43:08,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570418517] [2021-12-22 13:43:08,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:43:08,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-22 13:43:08,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:43:08,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-22 13:43:08,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-12-22 13:43:08,110 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-22 13:43:08,111 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) [2021-12-22 13:43:08,111 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:43:08,111 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-22 13:43:08,111 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:43:12,336 INFO L129 PetriNetUnfolder]: 883/3117 cut-off events. [2021-12-22 13:43:12,337 INFO L130 PetriNetUnfolder]: For 14778/14784 co-relation queries the response was YES. [2021-12-22 13:43:12,358 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. [2021-12-22 13:43:12,366 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 361 selfloop transitions, 43 changer transitions 124/615 dead transitions. [2021-12-22 13:43:12,366 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 615 transitions, 5729 flow [2021-12-22 13:43:12,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-12-22 13:43:12,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-12-22 13:43:12,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 7313 transitions. [2021-12-22 13:43:12,370 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6392482517482517 [2021-12-22 13:43:12,370 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 7313 transitions. [2021-12-22 13:43:12,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 7313 transitions. [2021-12-22 13:43:12,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:43:12,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 7313 transitions. [2021-12-22 13:43:12,376 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) [2021-12-22 13:43:12,381 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) [2021-12-22 13:43:12,382 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) [2021-12-22 13:43:12,382 INFO L186 Difference]: Start difference. First operand has 305 places, 219 transitions, 1311 flow. Second operand 65 states and 7313 transitions. [2021-12-22 13:43:12,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 615 transitions, 5729 flow [2021-12-22 13:43:12,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 615 transitions, 4989 flow, removed 118 selfloop flow, removed 20 redundant places. [2021-12-22 13:43:12,425 INFO L242 Difference]: Finished difference. Result has 387 places, 219 transitions, 1298 flow [2021-12-22 13:43:12,426 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} [2021-12-22 13:43:12,426 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 228 predicate places. [2021-12-22 13:43:12,426 INFO L470 AbstractCegarLoop]: Abstraction has has 387 places, 219 transitions, 1298 flow [2021-12-22 13:43:12,427 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) [2021-12-22 13:43:12,427 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:43:12,427 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] [2021-12-22 13:43:12,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-12-22 13:43:12,427 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:43:12,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:43:12,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1990567509, now seen corresponding path program 5 times [2021-12-22 13:43:12,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:43:12,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626157862] [2021-12-22 13:43:12,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:43:12,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:43:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:43:12,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:43:12,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:43:12,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626157862] [2021-12-22 13:43:12,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626157862] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:43:12,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:43:12,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-22 13:43:12,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63965906] [2021-12-22 13:43:12,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:43:12,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-22 13:43:12,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:43:12,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-22 13:43:12,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-12-22 13:43:12,830 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-22 13:43:12,831 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) [2021-12-22 13:43:12,831 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:43:12,831 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-22 13:43:12,831 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:43:16,131 INFO L129 PetriNetUnfolder]: 997/3471 cut-off events. [2021-12-22 13:43:16,131 INFO L130 PetriNetUnfolder]: For 28322/28327 co-relation queries the response was YES. [2021-12-22 13:43:16,162 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. [2021-12-22 13:43:16,172 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 329 selfloop transitions, 34 changer transitions 39/489 dead transitions. [2021-12-22 13:43:16,173 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 489 transitions, 4671 flow [2021-12-22 13:43:16,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-22 13:43:16,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-12-22 13:43:16,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4068 transitions. [2021-12-22 13:43:16,176 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6603896103896104 [2021-12-22 13:43:16,176 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4068 transitions. [2021-12-22 13:43:16,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4068 transitions. [2021-12-22 13:43:16,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:43:16,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4068 transitions. [2021-12-22 13:43:16,180 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) [2021-12-22 13:43:16,182 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) [2021-12-22 13:43:16,183 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) [2021-12-22 13:43:16,183 INFO L186 Difference]: Start difference. First operand has 387 places, 219 transitions, 1298 flow. Second operand 35 states and 4068 transitions. [2021-12-22 13:43:16,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 489 transitions, 4671 flow [2021-12-22 13:43:16,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 489 transitions, 3888 flow, removed 265 selfloop flow, removed 60 redundant places. [2021-12-22 13:43:16,249 INFO L242 Difference]: Finished difference. Result has 338 places, 244 transitions, 1596 flow [2021-12-22 13:43:16,249 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} [2021-12-22 13:43:16,250 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 179 predicate places. [2021-12-22 13:43:16,250 INFO L470 AbstractCegarLoop]: Abstraction has has 338 places, 244 transitions, 1596 flow [2021-12-22 13:43:16,250 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) [2021-12-22 13:43:16,250 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:43:16,251 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] [2021-12-22 13:43:16,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-12-22 13:43:16,251 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:43:16,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:43:16,251 INFO L85 PathProgramCache]: Analyzing trace with hash 603582109, now seen corresponding path program 6 times [2021-12-22 13:43:16,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:43:16,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423567688] [2021-12-22 13:43:16,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:43:16,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:43:16,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:43:16,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:43:16,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:43:16,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423567688] [2021-12-22 13:43:16,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423567688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:43:16,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:43:16,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-22 13:43:16,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934118654] [2021-12-22 13:43:16,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:43:16,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-22 13:43:16,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:43:16,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-22 13:43:16,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-12-22 13:43:16,678 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-22 13:43:16,679 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) [2021-12-22 13:43:16,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:43:16,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-22 13:43:16,679 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:43:19,177 INFO L129 PetriNetUnfolder]: 1088/3774 cut-off events. [2021-12-22 13:43:19,178 INFO L130 PetriNetUnfolder]: For 29016/29021 co-relation queries the response was YES. [2021-12-22 13:43:19,217 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. [2021-12-22 13:43:19,228 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 269 selfloop transitions, 60 changer transitions 44/460 dead transitions. [2021-12-22 13:43:19,228 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 460 transitions, 4453 flow [2021-12-22 13:43:19,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-22 13:43:19,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-12-22 13:43:19,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4007 transitions. [2021-12-22 13:43:19,262 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.650487012987013 [2021-12-22 13:43:19,262 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4007 transitions. [2021-12-22 13:43:19,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4007 transitions. [2021-12-22 13:43:19,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:43:19,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4007 transitions. [2021-12-22 13:43:19,264 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) [2021-12-22 13:43:19,267 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) [2021-12-22 13:43:19,267 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) [2021-12-22 13:43:19,267 INFO L186 Difference]: Start difference. First operand has 338 places, 244 transitions, 1596 flow. Second operand 35 states and 4007 transitions. [2021-12-22 13:43:19,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 460 transitions, 4453 flow [2021-12-22 13:43:19,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 460 transitions, 4099 flow, removed 155 selfloop flow, removed 19 redundant places. [2021-12-22 13:43:19,348 INFO L242 Difference]: Finished difference. Result has 363 places, 269 transitions, 1946 flow [2021-12-22 13:43:19,349 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} [2021-12-22 13:43:19,349 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 204 predicate places. [2021-12-22 13:43:19,350 INFO L470 AbstractCegarLoop]: Abstraction has has 363 places, 269 transitions, 1946 flow [2021-12-22 13:43:19,350 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) [2021-12-22 13:43:19,351 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:43:19,351 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] [2021-12-22 13:43:19,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-12-22 13:43:19,351 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:43:19,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:43:19,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1760046429, now seen corresponding path program 7 times [2021-12-22 13:43:19,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:43:19,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589574492] [2021-12-22 13:43:19,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:43:19,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:43:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:43:19,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:43:19,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:43:19,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589574492] [2021-12-22 13:43:19,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589574492] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:43:19,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:43:19,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-22 13:43:19,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245055217] [2021-12-22 13:43:19,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:43:19,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-22 13:43:19,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:43:19,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-22 13:43:19,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-12-22 13:43:19,785 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-22 13:43:19,786 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) [2021-12-22 13:43:19,786 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:43:19,786 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-22 13:43:19,786 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:43:22,546 INFO L129 PetriNetUnfolder]: 1172/3935 cut-off events. [2021-12-22 13:43:22,546 INFO L130 PetriNetUnfolder]: For 38389/38394 co-relation queries the response was YES. [2021-12-22 13:43:22,577 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. [2021-12-22 13:43:22,588 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 361 selfloop transitions, 63 changer transitions 36/547 dead transitions. [2021-12-22 13:43:22,588 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 547 transitions, 6087 flow [2021-12-22 13:43:22,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-22 13:43:22,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-12-22 13:43:22,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4001 transitions. [2021-12-22 13:43:22,592 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.649512987012987 [2021-12-22 13:43:22,592 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4001 transitions. [2021-12-22 13:43:22,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4001 transitions. [2021-12-22 13:43:22,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:43:22,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4001 transitions. [2021-12-22 13:43:22,595 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) [2021-12-22 13:43:22,598 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) [2021-12-22 13:43:22,598 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) [2021-12-22 13:43:22,598 INFO L186 Difference]: Start difference. First operand has 363 places, 269 transitions, 1946 flow. Second operand 35 states and 4001 transitions. [2021-12-22 13:43:22,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 547 transitions, 6087 flow [2021-12-22 13:43:22,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 547 transitions, 5421 flow, removed 202 selfloop flow, removed 19 redundant places. [2021-12-22 13:43:22,682 INFO L242 Difference]: Finished difference. Result has 388 places, 293 transitions, 2351 flow [2021-12-22 13:43:22,683 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} [2021-12-22 13:43:22,683 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 229 predicate places. [2021-12-22 13:43:22,683 INFO L470 AbstractCegarLoop]: Abstraction has has 388 places, 293 transitions, 2351 flow [2021-12-22 13:43:22,684 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) [2021-12-22 13:43:22,684 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:43:22,684 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] [2021-12-22 13:43:22,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-12-22 13:43:22,684 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:43:22,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:43:22,685 INFO L85 PathProgramCache]: Analyzing trace with hash -330972291, now seen corresponding path program 8 times [2021-12-22 13:43:22,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:43:22,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863709067] [2021-12-22 13:43:22,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:43:22,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:43:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:43:23,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:43:23,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:43:23,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863709067] [2021-12-22 13:43:23,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863709067] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:43:23,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:43:23,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-22 13:43:23,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911439938] [2021-12-22 13:43:23,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:43:23,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-22 13:43:23,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:43:23,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-22 13:43:23,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-12-22 13:43:23,249 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-22 13:43:23,250 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) [2021-12-22 13:43:23,250 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:43:23,251 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-22 13:43:23,251 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:43:26,039 INFO L129 PetriNetUnfolder]: 1313/4453 cut-off events. [2021-12-22 13:43:26,039 INFO L130 PetriNetUnfolder]: For 50785/50790 co-relation queries the response was YES. [2021-12-22 13:43:26,083 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. [2021-12-22 13:43:26,098 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 335 selfloop transitions, 57 changer transitions 44/523 dead transitions. [2021-12-22 13:43:26,098 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 523 transitions, 6112 flow [2021-12-22 13:43:26,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-22 13:43:26,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-12-22 13:43:26,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4011 transitions. [2021-12-22 13:43:26,101 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6511363636363636 [2021-12-22 13:43:26,101 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4011 transitions. [2021-12-22 13:43:26,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4011 transitions. [2021-12-22 13:43:26,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:43:26,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4011 transitions. [2021-12-22 13:43:26,105 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) [2021-12-22 13:43:26,107 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) [2021-12-22 13:43:26,108 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) [2021-12-22 13:43:26,108 INFO L186 Difference]: Start difference. First operand has 388 places, 293 transitions, 2351 flow. Second operand 35 states and 4011 transitions. [2021-12-22 13:43:26,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 523 transitions, 6112 flow [2021-12-22 13:43:26,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 523 transitions, 5558 flow, removed 175 selfloop flow, removed 19 redundant places. [2021-12-22 13:43:26,241 INFO L242 Difference]: Finished difference. Result has 415 places, 320 transitions, 2659 flow [2021-12-22 13:43:26,241 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} [2021-12-22 13:43:26,241 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 256 predicate places. [2021-12-22 13:43:26,241 INFO L470 AbstractCegarLoop]: Abstraction has has 415 places, 320 transitions, 2659 flow [2021-12-22 13:43:26,242 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) [2021-12-22 13:43:26,242 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:43:26,242 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] [2021-12-22 13:43:26,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-12-22 13:43:26,242 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:43:26,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:43:26,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1307403661, now seen corresponding path program 9 times [2021-12-22 13:43:26,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:43:26,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408315266] [2021-12-22 13:43:26,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:43:26,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:43:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:43:26,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:43:26,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:43:26,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408315266] [2021-12-22 13:43:26,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408315266] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:43:26,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:43:26,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-22 13:43:26,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666898661] [2021-12-22 13:43:26,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:43:26,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-22 13:43:26,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:43:26,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-22 13:43:26,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-12-22 13:43:26,743 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-22 13:43:26,744 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) [2021-12-22 13:43:26,744 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:43:26,744 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-22 13:43:26,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:43:29,857 INFO L129 PetriNetUnfolder]: 1443/4779 cut-off events. [2021-12-22 13:43:29,857 INFO L130 PetriNetUnfolder]: For 68795/68804 co-relation queries the response was YES. [2021-12-22 13:43:29,900 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. [2021-12-22 13:43:29,913 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 412 selfloop transitions, 61 changer transitions 36/596 dead transitions. [2021-12-22 13:43:29,913 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 596 transitions, 7408 flow [2021-12-22 13:43:29,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-22 13:43:29,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-12-22 13:43:29,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4004 transitions. [2021-12-22 13:43:29,916 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.65 [2021-12-22 13:43:29,916 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4004 transitions. [2021-12-22 13:43:29,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4004 transitions. [2021-12-22 13:43:29,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:43:29,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4004 transitions. [2021-12-22 13:43:29,919 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) [2021-12-22 13:43:29,921 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) [2021-12-22 13:43:29,921 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) [2021-12-22 13:43:29,922 INFO L186 Difference]: Start difference. First operand has 415 places, 320 transitions, 2659 flow. Second operand 35 states and 4004 transitions. [2021-12-22 13:43:29,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 596 transitions, 7408 flow [2021-12-22 13:43:30,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 596 transitions, 6681 flow, removed 280 selfloop flow, removed 19 redundant places. [2021-12-22 13:43:30,184 INFO L242 Difference]: Finished difference. Result has 442 places, 346 transitions, 3132 flow [2021-12-22 13:43:30,184 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} [2021-12-22 13:43:30,185 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 283 predicate places. [2021-12-22 13:43:30,185 INFO L470 AbstractCegarLoop]: Abstraction has has 442 places, 346 transitions, 3132 flow [2021-12-22 13:43:30,185 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) [2021-12-22 13:43:30,185 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:43:30,185 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] [2021-12-22 13:43:30,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-12-22 13:43:30,186 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:43:30,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:43:30,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1590830695, now seen corresponding path program 10 times [2021-12-22 13:43:30,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:43:30,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249585346] [2021-12-22 13:43:30,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:43:30,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:43:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:43:30,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:43:30,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:43:30,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249585346] [2021-12-22 13:43:30,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249585346] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:43:30,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:43:30,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-22 13:43:30,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837177677] [2021-12-22 13:43:30,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:43:30,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-22 13:43:30,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:43:30,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-22 13:43:30,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2021-12-22 13:43:30,589 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-22 13:43:30,589 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) [2021-12-22 13:43:30,589 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:43:30,590 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-22 13:43:30,590 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:43:33,974 INFO L129 PetriNetUnfolder]: 1711/5691 cut-off events. [2021-12-22 13:43:33,979 INFO L130 PetriNetUnfolder]: For 92803/92812 co-relation queries the response was YES. [2021-12-22 13:43:34,038 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. [2021-12-22 13:43:34,054 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 404 selfloop transitions, 103 changer transitions 40/634 dead transitions. [2021-12-22 13:43:34,055 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 634 transitions, 8420 flow [2021-12-22 13:43:34,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-22 13:43:34,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-12-22 13:43:34,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4024 transitions. [2021-12-22 13:43:34,057 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6532467532467533 [2021-12-22 13:43:34,057 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4024 transitions. [2021-12-22 13:43:34,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4024 transitions. [2021-12-22 13:43:34,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:43:34,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4024 transitions. [2021-12-22 13:43:34,060 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) [2021-12-22 13:43:34,063 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) [2021-12-22 13:43:34,063 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) [2021-12-22 13:43:34,063 INFO L186 Difference]: Start difference. First operand has 442 places, 346 transitions, 3132 flow. Second operand 35 states and 4024 transitions. [2021-12-22 13:43:34,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 634 transitions, 8420 flow [2021-12-22 13:43:34,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 634 transitions, 7687 flow, removed 298 selfloop flow, removed 19 redundant places. [2021-12-22 13:43:34,302 INFO L242 Difference]: Finished difference. Result has 474 places, 377 transitions, 3713 flow [2021-12-22 13:43:34,302 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} [2021-12-22 13:43:34,303 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 315 predicate places. [2021-12-22 13:43:34,303 INFO L470 AbstractCegarLoop]: Abstraction has has 474 places, 377 transitions, 3713 flow [2021-12-22 13:43:34,303 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) [2021-12-22 13:43:34,303 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:43:34,303 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] [2021-12-22 13:43:34,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-12-22 13:43:34,304 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:43:34,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:43:34,304 INFO L85 PathProgramCache]: Analyzing trace with hash 118525987, now seen corresponding path program 11 times [2021-12-22 13:43:34,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:43:34,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793077901] [2021-12-22 13:43:34,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:43:34,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:43:34,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:43:34,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:43:34,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:43:34,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793077901] [2021-12-22 13:43:34,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793077901] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:43:34,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:43:34,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-22 13:43:34,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708534009] [2021-12-22 13:43:34,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:43:34,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-22 13:43:34,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:43:34,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-22 13:43:34,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2021-12-22 13:43:34,697 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-22 13:43:34,698 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) [2021-12-22 13:43:34,698 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:43:34,698 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-22 13:43:34,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:43:39,845 INFO L129 PetriNetUnfolder]: 1895/6313 cut-off events. [2021-12-22 13:43:39,845 INFO L130 PetriNetUnfolder]: For 127531/127539 co-relation queries the response was YES. [2021-12-22 13:43:39,920 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. [2021-12-22 13:43:39,942 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 538 selfloop transitions, 35 changer transitions 112/772 dead transitions. [2021-12-22 13:43:39,942 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 772 transitions, 10935 flow [2021-12-22 13:43:39,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-12-22 13:43:39,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-12-22 13:43:39,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 7020 transitions. [2021-12-22 13:43:39,947 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6433284457478006 [2021-12-22 13:43:39,947 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 7020 transitions. [2021-12-22 13:43:39,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 7020 transitions. [2021-12-22 13:43:39,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:43:39,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 7020 transitions. [2021-12-22 13:43:39,998 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) [2021-12-22 13:43:40,002 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) [2021-12-22 13:43:40,003 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) [2021-12-22 13:43:40,003 INFO L186 Difference]: Start difference. First operand has 474 places, 377 transitions, 3713 flow. Second operand 62 states and 7020 transitions. [2021-12-22 13:43:40,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 772 transitions, 10935 flow [2021-12-22 13:43:40,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 772 transitions, 10077 flow, removed 426 selfloop flow, removed 16 redundant places. [2021-12-22 13:43:40,405 INFO L242 Difference]: Finished difference. Result has 561 places, 386 transitions, 3823 flow [2021-12-22 13:43:40,406 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} [2021-12-22 13:43:40,406 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 402 predicate places. [2021-12-22 13:43:40,406 INFO L470 AbstractCegarLoop]: Abstraction has has 561 places, 386 transitions, 3823 flow [2021-12-22 13:43:40,406 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) [2021-12-22 13:43:40,406 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:43:40,407 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] [2021-12-22 13:43:40,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-12-22 13:43:40,407 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:43:40,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:43:40,407 INFO L85 PathProgramCache]: Analyzing trace with hash -811381305, now seen corresponding path program 12 times [2021-12-22 13:43:40,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:43:40,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661337599] [2021-12-22 13:43:40,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:43:40,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:43:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:43:40,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:43:40,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:43:40,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661337599] [2021-12-22 13:43:40,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661337599] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:43:40,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:43:40,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-22 13:43:40,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205917069] [2021-12-22 13:43:40,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:43:40,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-22 13:43:40,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:43:40,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-22 13:43:40,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2021-12-22 13:43:40,864 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-22 13:43:40,865 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) [2021-12-22 13:43:40,865 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:43:40,865 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-22 13:43:40,865 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand