./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 c3fed411 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-tmp.no-commuhash-c3fed41 [2021-12-17 22:47:35,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 22:47:35,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 22:47:35,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 22:47:35,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 22:47:35,526 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 22:47:35,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 22:47:35,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 22:47:35,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 22:47:35,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 22:47:35,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 22:47:35,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 22:47:35,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 22:47:35,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 22:47:35,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 22:47:35,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 22:47:35,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 22:47:35,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 22:47:35,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 22:47:35,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 22:47:35,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 22:47:35,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 22:47:35,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 22:47:35,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 22:47:35,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 22:47:35,543 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 22:47:35,543 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 22:47:35,544 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 22:47:35,544 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 22:47:35,545 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 22:47:35,545 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 22:47:35,546 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 22:47:35,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 22:47:35,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 22:47:35,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 22:47:35,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 22:47:35,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 22:47:35,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 22:47:35,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 22:47:35,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 22:47:35,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 22:47:35,552 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 22:47:35,588 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 22:47:35,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 22:47:35,589 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 22:47:35,589 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 22:47:35,589 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 22:47:35,589 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 22:47:35,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 22:47:35,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 22:47:35,596 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 22:47:35,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 22:47:35,596 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 22:47:35,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 22:47:35,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 22:47:35,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 22:47:35,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 22:47:35,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 22:47:35,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 22:47:35,597 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 22:47:35,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 22:47:35,597 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 22:47:35,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 22:47:35,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 22:47:35,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 22:47:35,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 22:47:35,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 22:47:35,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 22:47:35,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 22:47:35,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 22:47:35,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 22:47:35,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 22:47:35,598 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 22:47:35,598 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 22:47:35,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 22:47:35,598 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 22:47:35,598 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfa53b3a6eade068c4346d28766037c8d26fae61c62dd4c8f6fc2f9d68567d2c [2021-12-17 22:47:35,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 22:47:35,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 22:47:35,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 22:47:35,858 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 22:47:35,858 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 22:47:35,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c [2021-12-17 22:47:35,921 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7114a05d3/d33154e547054b72abefa2ad4544bd4f/FLAG8c4ef76d5 [2021-12-17 22:47:36,282 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 22:47:36,282 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c [2021-12-17 22:47:36,289 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7114a05d3/d33154e547054b72abefa2ad4544bd4f/FLAG8c4ef76d5 [2021-12-17 22:47:36,299 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7114a05d3/d33154e547054b72abefa2ad4544bd4f [2021-12-17 22:47:36,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 22:47:36,304 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 22:47:36,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 22:47:36,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 22:47:36,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 22:47:36,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:47:36" (1/1) ... [2021-12-17 22:47:36,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33d774ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:36, skipping insertion in model container [2021-12-17 22:47:36,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:47:36" (1/1) ... [2021-12-17 22:47:36,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 22:47:36,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 22:47:36,525 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] [2021-12-17 22:47:36,530 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 22:47:36,540 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 22:47:36,571 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] [2021-12-17 22:47:36,574 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 22:47:36,585 INFO L208 MainTranslator]: Completed translation [2021-12-17 22:47:36,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:36 WrapperNode [2021-12-17 22:47:36,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 22:47:36,587 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 22:47:36,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 22:47:36,587 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 22:47:36,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:36" (1/1) ... [2021-12-17 22:47:36,607 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:36" (1/1) ... [2021-12-17 22:47:36,647 INFO L137 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 130 [2021-12-17 22:47:36,647 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 22:47:36,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 22:47:36,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 22:47:36,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 22:47:36,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:36" (1/1) ... [2021-12-17 22:47:36,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:36" (1/1) ... [2021-12-17 22:47:36,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:36" (1/1) ... [2021-12-17 22:47:36,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:36" (1/1) ... [2021-12-17 22:47:36,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:36" (1/1) ... [2021-12-17 22:47:36,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:36" (1/1) ... [2021-12-17 22:47:36,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:36" (1/1) ... [2021-12-17 22:47:36,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 22:47:36,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 22:47:36,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 22:47:36,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 22:47:36,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:36" (1/1) ... [2021-12-17 22:47:36,704 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 22:47:36,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 22:47:36,733 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) [2021-12-17 22:47:36,783 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 [2021-12-17 22:47:36,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 22:47:36,796 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-17 22:47:36,796 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-17 22:47:36,796 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-17 22:47:36,796 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-17 22:47:36,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 22:47:36,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 22:47:36,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 22:47:36,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 22:47:36,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 22:47:36,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 22:47:36,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 22:47:36,798 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-17 22:47:36,857 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 22:47:36,859 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 22:47:37,054 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 22:47:37,061 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 22:47:37,061 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 22:47:37,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:47:37 BoogieIcfgContainer [2021-12-17 22:47:37,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 22:47:37,065 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 22:47:37,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 22:47:37,075 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 22:47:37,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 10:47:36" (1/3) ... [2021-12-17 22:47:37,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28b0d3b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:47:37, skipping insertion in model container [2021-12-17 22:47:37,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:36" (2/3) ... [2021-12-17 22:47:37,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28b0d3b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:47:37, skipping insertion in model container [2021-12-17 22:47:37,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:47:37" (3/3) ... [2021-12-17 22:47:37,078 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-symm.wvr.c [2021-12-17 22:47:37,085 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-17 22:47:37,085 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 22:47:37,086 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 22:47:37,086 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-17 22:47:37,127 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,128 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,128 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,128 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,128 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,128 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,128 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,129 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,129 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,129 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,129 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,129 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,129 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,129 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,129 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,129 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,130 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,130 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,130 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,130 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,130 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,130 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,130 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,130 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,131 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,131 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,131 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,131 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,131 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,131 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,131 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,131 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,132 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,132 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,132 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,132 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,132 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,132 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,132 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,132 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,133 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,133 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,133 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,133 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,133 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,133 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,133 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,133 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,134 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,134 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,134 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,134 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,134 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,134 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,134 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,134 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,135 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,135 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,135 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,135 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,135 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,135 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,135 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,135 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,136 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,136 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,136 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,136 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,136 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,136 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,136 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,136 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,138 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,138 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,138 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,138 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,139 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,139 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,139 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,139 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,139 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,140 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,140 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,140 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,140 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,140 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,141 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,141 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,141 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,142 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,142 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,142 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,142 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,142 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,143 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,143 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,143 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,143 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,143 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,143 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,144 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,144 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,144 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,145 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,145 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,145 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,146 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,146 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,146 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,146 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,147 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,147 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,147 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,147 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,148 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,148 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,148 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,148 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,149 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,149 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,149 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,149 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,149 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,150 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,150 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,150 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,150 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,150 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,151 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,151 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,151 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,151 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,152 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,153 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,153 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,153 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,153 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,154 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,154 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,154 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,154 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,154 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,155 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,155 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,155 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,156 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,156 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,156 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,156 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,156 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,156 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,157 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,157 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,157 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,159 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,159 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,160 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,160 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,160 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,160 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,160 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,161 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,161 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,162 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,162 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,162 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,162 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,162 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,163 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,163 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,163 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,164 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,164 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,164 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,164 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,165 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,165 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,165 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,165 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,165 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,169 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,169 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,170 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,170 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,171 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,171 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,171 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,171 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,172 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,172 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,172 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,173 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,173 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,177 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,178 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,178 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,178 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,178 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,178 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,179 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,179 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,180 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,180 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,183 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,183 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,183 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:37,187 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-12-17 22:47:37,231 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 22:47:37,240 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 [2021-12-17 22:47:37,240 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-17 22:47:37,256 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 170 places, 176 transitions, 368 flow [2021-12-17 22:47:37,340 INFO L129 PetriNetUnfolder]: 13/174 cut-off events. [2021-12-17 22:47:37,344 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-17 22:47:37,348 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. [2021-12-17 22:47:37,349 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 176 transitions, 368 flow [2021-12-17 22:47:37,356 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 165 transitions, 342 flow [2021-12-17 22:47:37,385 INFO L129 PetriNetUnfolder]: 13/164 cut-off events. [2021-12-17 22:47:37,387 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-17 22:47:37,387 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:37,388 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] [2021-12-17 22:47:37,388 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:37,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:37,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1782218821, now seen corresponding path program 1 times [2021-12-17 22:47:37,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:37,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716351247] [2021-12-17 22:47:37,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:37,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:37,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:37,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:37,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716351247] [2021-12-17 22:47:37,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716351247] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:37,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:37,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:37,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801741596] [2021-12-17 22:47:37,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:37,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:37,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:37,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:37,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:37,875 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:37,879 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) [2021-12-17 22:47:37,879 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:37,879 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:37,880 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:38,252 INFO L129 PetriNetUnfolder]: 107/482 cut-off events. [2021-12-17 22:47:38,253 INFO L130 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2021-12-17 22:47:38,258 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. [2021-12-17 22:47:38,264 INFO L132 encePairwiseOnDemand]: 155/176 looper letters, 81 selfloop transitions, 5 changer transitions 44/253 dead transitions. [2021-12-17 22:47:38,264 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 253 transitions, 808 flow [2021-12-17 22:47:38,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-17 22:47:38,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-12-17 22:47:38,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3478 transitions. [2021-12-17 22:47:38,286 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7904545454545454 [2021-12-17 22:47:38,286 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3478 transitions. [2021-12-17 22:47:38,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3478 transitions. [2021-12-17 22:47:38,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:38,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3478 transitions. [2021-12-17 22:47:38,301 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) [2021-12-17 22:47:38,312 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) [2021-12-17 22:47:38,314 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) [2021-12-17 22:47:38,315 INFO L186 Difference]: Start difference. First operand has 159 places, 165 transitions, 342 flow. Second operand 25 states and 3478 transitions. [2021-12-17 22:47:38,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 253 transitions, 808 flow [2021-12-17 22:47:38,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 253 transitions, 780 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-17 22:47:38,342 INFO L242 Difference]: Finished difference. Result has 201 places, 159 transitions, 405 flow [2021-12-17 22:47:38,343 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} [2021-12-17 22:47:38,347 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 42 predicate places. [2021-12-17 22:47:38,347 INFO L470 AbstractCegarLoop]: Abstraction has has 201 places, 159 transitions, 405 flow [2021-12-17 22:47:38,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:38,348 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:38,348 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:47:38,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 22:47:38,349 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:38,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:38,350 INFO L85 PathProgramCache]: Analyzing trace with hash 346921447, now seen corresponding path program 1 times [2021-12-17 22:47:38,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:38,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864748412] [2021-12-17 22:47:38,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:38,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:38,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:38,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:38,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864748412] [2021-12-17 22:47:38,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864748412] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:38,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:38,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 22:47:38,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433757357] [2021-12-17 22:47:38,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:38,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 22:47:38,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:38,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 22:47:38,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 22:47:38,410 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2021-12-17 22:47:38,411 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) [2021-12-17 22:47:38,411 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:38,411 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2021-12-17 22:47:38,411 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:38,520 INFO L129 PetriNetUnfolder]: 59/602 cut-off events. [2021-12-17 22:47:38,520 INFO L130 PetriNetUnfolder]: For 894/932 co-relation queries the response was YES. [2021-12-17 22:47:38,523 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. [2021-12-17 22:47:38,526 INFO L132 encePairwiseOnDemand]: 168/176 looper letters, 13 selfloop transitions, 5 changer transitions 0/165 dead transitions. [2021-12-17 22:47:38,526 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 165 transitions, 456 flow [2021-12-17 22:47:38,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 22:47:38,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 22:47:38,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2021-12-17 22:47:38,527 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2021-12-17 22:47:38,527 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2021-12-17 22:47:38,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2021-12-17 22:47:38,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:38,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2021-12-17 22:47:38,529 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) [2021-12-17 22:47:38,530 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) [2021-12-17 22:47:38,530 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) [2021-12-17 22:47:38,531 INFO L186 Difference]: Start difference. First operand has 201 places, 159 transitions, 405 flow. Second operand 3 states and 489 transitions. [2021-12-17 22:47:38,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 165 transitions, 456 flow [2021-12-17 22:47:38,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 165 transitions, 437 flow, removed 9 selfloop flow, removed 10 redundant places. [2021-12-17 22:47:38,542 INFO L242 Difference]: Finished difference. Result has 174 places, 162 transitions, 424 flow [2021-12-17 22:47:38,542 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} [2021-12-17 22:47:38,543 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 15 predicate places. [2021-12-17 22:47:38,543 INFO L470 AbstractCegarLoop]: Abstraction has has 174 places, 162 transitions, 424 flow [2021-12-17 22:47:38,544 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) [2021-12-17 22:47:38,544 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:38,544 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] [2021-12-17 22:47:38,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 22:47:38,545 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:38,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:38,545 INFO L85 PathProgramCache]: Analyzing trace with hash -250466245, now seen corresponding path program 2 times [2021-12-17 22:47:38,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:38,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116795958] [2021-12-17 22:47:38,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:38,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:38,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:38,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:38,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116795958] [2021-12-17 22:47:38,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116795958] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:38,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:38,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 22:47:38,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623600806] [2021-12-17 22:47:38,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:38,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 22:47:38,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:38,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 22:47:38,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 22:47:38,597 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2021-12-17 22:47:38,597 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) [2021-12-17 22:47:38,597 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:38,597 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2021-12-17 22:47:38,597 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:38,671 INFO L129 PetriNetUnfolder]: 38/491 cut-off events. [2021-12-17 22:47:38,671 INFO L130 PetriNetUnfolder]: For 415/432 co-relation queries the response was YES. [2021-12-17 22:47:38,673 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. [2021-12-17 22:47:38,674 INFO L132 encePairwiseOnDemand]: 170/176 looper letters, 18 selfloop transitions, 3 changer transitions 2/168 dead transitions. [2021-12-17 22:47:38,674 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 168 transitions, 487 flow [2021-12-17 22:47:38,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 22:47:38,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 22:47:38,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2021-12-17 22:47:38,676 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2021-12-17 22:47:38,676 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2021-12-17 22:47:38,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2021-12-17 22:47:38,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:38,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2021-12-17 22:47:38,678 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) [2021-12-17 22:47:38,679 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) [2021-12-17 22:47:38,679 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) [2021-12-17 22:47:38,680 INFO L186 Difference]: Start difference. First operand has 174 places, 162 transitions, 424 flow. Second operand 3 states and 489 transitions. [2021-12-17 22:47:38,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 168 transitions, 487 flow [2021-12-17 22:47:38,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 168 transitions, 477 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-17 22:47:38,686 INFO L242 Difference]: Finished difference. Result has 176 places, 163 transitions, 446 flow [2021-12-17 22:47:38,687 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} [2021-12-17 22:47:38,688 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 17 predicate places. [2021-12-17 22:47:38,689 INFO L470 AbstractCegarLoop]: Abstraction has has 176 places, 163 transitions, 446 flow [2021-12-17 22:47:38,689 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) [2021-12-17 22:47:38,689 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:38,689 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] [2021-12-17 22:47:38,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 22:47:38,690 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:38,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:38,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1510269733, now seen corresponding path program 1 times [2021-12-17 22:47:38,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:38,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520256084] [2021-12-17 22:47:38,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:38,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:38,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:38,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:38,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520256084] [2021-12-17 22:47:38,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520256084] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:38,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:38,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:38,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368235246] [2021-12-17 22:47:38,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:38,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:38,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:38,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:38,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:38,811 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:38,812 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) [2021-12-17 22:47:38,812 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:38,812 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:38,812 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:39,093 INFO L129 PetriNetUnfolder]: 189/899 cut-off events. [2021-12-17 22:47:39,094 INFO L130 PetriNetUnfolder]: For 1062/1086 co-relation queries the response was YES. [2021-12-17 22:47:39,096 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. [2021-12-17 22:47:39,101 INFO L132 encePairwiseOnDemand]: 161/176 looper letters, 72 selfloop transitions, 22 changer transitions 34/256 dead transitions. [2021-12-17 22:47:39,101 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 256 transitions, 1069 flow [2021-12-17 22:47:39,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 22:47:39,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-17 22:47:39,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2251 transitions. [2021-12-17 22:47:39,114 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7993607954545454 [2021-12-17 22:47:39,114 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2251 transitions. [2021-12-17 22:47:39,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2251 transitions. [2021-12-17 22:47:39,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:39,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2251 transitions. [2021-12-17 22:47:39,119 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) [2021-12-17 22:47:39,122 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) [2021-12-17 22:47:39,123 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) [2021-12-17 22:47:39,123 INFO L186 Difference]: Start difference. First operand has 176 places, 163 transitions, 446 flow. Second operand 16 states and 2251 transitions. [2021-12-17 22:47:39,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 256 transitions, 1069 flow [2021-12-17 22:47:39,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 256 transitions, 1060 flow, removed 3 selfloop flow, removed 1 redundant places. [2021-12-17 22:47:39,130 INFO L242 Difference]: Finished difference. Result has 200 places, 184 transitions, 670 flow [2021-12-17 22:47:39,131 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} [2021-12-17 22:47:39,132 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 41 predicate places. [2021-12-17 22:47:39,132 INFO L470 AbstractCegarLoop]: Abstraction has has 200 places, 184 transitions, 670 flow [2021-12-17 22:47:39,133 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) [2021-12-17 22:47:39,133 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:39,133 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] [2021-12-17 22:47:39,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 22:47:39,133 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:39,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:39,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1403497175, now seen corresponding path program 1 times [2021-12-17 22:47:39,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:39,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353948544] [2021-12-17 22:47:39,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:39,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:39,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:39,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:39,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353948544] [2021-12-17 22:47:39,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353948544] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:39,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:39,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 22:47:39,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807514082] [2021-12-17 22:47:39,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:39,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 22:47:39,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:39,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 22:47:39,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 22:47:39,190 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2021-12-17 22:47:39,191 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) [2021-12-17 22:47:39,191 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:39,191 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2021-12-17 22:47:39,191 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:39,284 INFO L129 PetriNetUnfolder]: 91/893 cut-off events. [2021-12-17 22:47:39,285 INFO L130 PetriNetUnfolder]: For 1700/1718 co-relation queries the response was YES. [2021-12-17 22:47:39,289 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. [2021-12-17 22:47:39,292 INFO L132 encePairwiseOnDemand]: 168/176 looper letters, 12 selfloop transitions, 5 changer transitions 2/190 dead transitions. [2021-12-17 22:47:39,292 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 190 transitions, 721 flow [2021-12-17 22:47:39,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 22:47:39,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 22:47:39,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2021-12-17 22:47:39,293 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2021-12-17 22:47:39,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2021-12-17 22:47:39,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2021-12-17 22:47:39,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:39,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2021-12-17 22:47:39,297 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) [2021-12-17 22:47:39,298 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) [2021-12-17 22:47:39,300 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) [2021-12-17 22:47:39,300 INFO L186 Difference]: Start difference. First operand has 200 places, 184 transitions, 670 flow. Second operand 3 states and 489 transitions. [2021-12-17 22:47:39,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 190 transitions, 721 flow [2021-12-17 22:47:39,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 190 transitions, 671 flow, removed 25 selfloop flow, removed 5 redundant places. [2021-12-17 22:47:39,312 INFO L242 Difference]: Finished difference. Result has 193 places, 185 transitions, 648 flow [2021-12-17 22:47:39,313 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} [2021-12-17 22:47:39,315 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 34 predicate places. [2021-12-17 22:47:39,315 INFO L470 AbstractCegarLoop]: Abstraction has has 193 places, 185 transitions, 648 flow [2021-12-17 22:47:39,316 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) [2021-12-17 22:47:39,316 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:39,317 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] [2021-12-17 22:47:39,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 22:47:39,317 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:39,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:39,318 INFO L85 PathProgramCache]: Analyzing trace with hash -749552169, now seen corresponding path program 2 times [2021-12-17 22:47:39,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:39,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114664718] [2021-12-17 22:47:39,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:39,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:39,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:39,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:39,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114664718] [2021-12-17 22:47:39,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114664718] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:39,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:39,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:39,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140841996] [2021-12-17 22:47:39,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:39,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:39,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:39,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:39,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:39,462 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:39,463 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) [2021-12-17 22:47:39,463 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:39,463 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:39,463 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:39,819 INFO L129 PetriNetUnfolder]: 220/1325 cut-off events. [2021-12-17 22:47:39,819 INFO L130 PetriNetUnfolder]: For 2111/2120 co-relation queries the response was YES. [2021-12-17 22:47:39,823 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. [2021-12-17 22:47:39,826 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 116 selfloop transitions, 6 changer transitions 41/293 dead transitions. [2021-12-17 22:47:39,826 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 293 transitions, 1586 flow [2021-12-17 22:47:39,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 22:47:39,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-17 22:47:39,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3313 transitions. [2021-12-17 22:47:39,832 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7843276515151515 [2021-12-17 22:47:39,832 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3313 transitions. [2021-12-17 22:47:39,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3313 transitions. [2021-12-17 22:47:39,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:39,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3313 transitions. [2021-12-17 22:47:39,838 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) [2021-12-17 22:47:39,843 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) [2021-12-17 22:47:39,844 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) [2021-12-17 22:47:39,844 INFO L186 Difference]: Start difference. First operand has 193 places, 185 transitions, 648 flow. Second operand 24 states and 3313 transitions. [2021-12-17 22:47:39,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 293 transitions, 1586 flow [2021-12-17 22:47:39,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 293 transitions, 1576 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-17 22:47:39,853 INFO L242 Difference]: Finished difference. Result has 235 places, 189 transitions, 754 flow [2021-12-17 22:47:39,853 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} [2021-12-17 22:47:39,854 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 76 predicate places. [2021-12-17 22:47:39,854 INFO L470 AbstractCegarLoop]: Abstraction has has 235 places, 189 transitions, 754 flow [2021-12-17 22:47:39,854 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) [2021-12-17 22:47:39,854 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:39,855 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] [2021-12-17 22:47:39,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 22:47:39,855 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:39,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:39,855 INFO L85 PathProgramCache]: Analyzing trace with hash -26456751, now seen corresponding path program 1 times [2021-12-17 22:47:39,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:39,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113747033] [2021-12-17 22:47:39,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:39,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:39,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:39,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:39,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113747033] [2021-12-17 22:47:39,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113747033] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:39,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:39,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 22:47:39,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981891241] [2021-12-17 22:47:39,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:39,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 22:47:39,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:39,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 22:47:39,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 22:47:39,876 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2021-12-17 22:47:39,876 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) [2021-12-17 22:47:39,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:39,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2021-12-17 22:47:39,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:39,946 INFO L129 PetriNetUnfolder]: 39/628 cut-off events. [2021-12-17 22:47:39,946 INFO L130 PetriNetUnfolder]: For 1646/1699 co-relation queries the response was YES. [2021-12-17 22:47:39,948 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1522 conditions, 628 events. 39/628 cut-off events. For 1646/1699 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3558 event pairs, 24 based on Foata normal form. 11/615 useless extension candidates. Maximal degree in co-relation 1437. Up to 50 conditions per place. [2021-12-17 22:47:39,950 INFO L132 encePairwiseOnDemand]: 170/176 looper letters, 16 selfloop transitions, 3 changer transitions 12/185 dead transitions. [2021-12-17 22:47:39,950 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 185 transitions, 746 flow [2021-12-17 22:47:39,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 22:47:39,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 22:47:39,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2021-12-17 22:47:39,951 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2021-12-17 22:47:39,951 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2021-12-17 22:47:39,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2021-12-17 22:47:39,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:39,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2021-12-17 22:47:39,953 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) [2021-12-17 22:47:39,953 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) [2021-12-17 22:47:39,954 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) [2021-12-17 22:47:39,954 INFO L186 Difference]: Start difference. First operand has 235 places, 189 transitions, 754 flow. Second operand 3 states and 489 transitions. [2021-12-17 22:47:39,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 185 transitions, 746 flow [2021-12-17 22:47:39,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 185 transitions, 679 flow, removed 30 selfloop flow, removed 13 redundant places. [2021-12-17 22:47:39,962 INFO L242 Difference]: Finished difference. Result has 207 places, 170 transitions, 586 flow [2021-12-17 22:47:39,962 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} [2021-12-17 22:47:39,963 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 48 predicate places. [2021-12-17 22:47:39,963 INFO L470 AbstractCegarLoop]: Abstraction has has 207 places, 170 transitions, 586 flow [2021-12-17 22:47:39,963 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) [2021-12-17 22:47:39,963 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:39,963 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] [2021-12-17 22:47:39,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 22:47:39,964 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:39,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:39,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1238633171, now seen corresponding path program 1 times [2021-12-17 22:47:39,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:39,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926237280] [2021-12-17 22:47:39,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:39,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:40,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:40,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:40,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926237280] [2021-12-17 22:47:40,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926237280] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:40,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:40,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:40,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392103676] [2021-12-17 22:47:40,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:40,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:40,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:40,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:40,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:40,057 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:40,058 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) [2021-12-17 22:47:40,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:40,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:40,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:40,365 INFO L129 PetriNetUnfolder]: 119/776 cut-off events. [2021-12-17 22:47:40,365 INFO L130 PetriNetUnfolder]: For 1987/2005 co-relation queries the response was YES. [2021-12-17 22:47:40,368 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2147 conditions, 776 events. 119/776 cut-off events. For 1987/2005 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4495 event pairs, 55 based on Foata normal form. 2/753 useless extension candidates. Maximal degree in co-relation 1787. Up to 200 conditions per place. [2021-12-17 22:47:40,370 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 77 selfloop transitions, 6 changer transitions 37/250 dead transitions. [2021-12-17 22:47:40,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 250 transitions, 1290 flow [2021-12-17 22:47:40,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 22:47:40,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-17 22:47:40,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3303 transitions. [2021-12-17 22:47:40,375 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7819602272727273 [2021-12-17 22:47:40,375 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3303 transitions. [2021-12-17 22:47:40,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3303 transitions. [2021-12-17 22:47:40,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:40,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3303 transitions. [2021-12-17 22:47:40,382 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) [2021-12-17 22:47:40,387 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) [2021-12-17 22:47:40,388 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) [2021-12-17 22:47:40,388 INFO L186 Difference]: Start difference. First operand has 207 places, 170 transitions, 586 flow. Second operand 24 states and 3303 transitions. [2021-12-17 22:47:40,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 250 transitions, 1290 flow [2021-12-17 22:47:40,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 250 transitions, 1133 flow, removed 76 selfloop flow, removed 14 redundant places. [2021-12-17 22:47:40,395 INFO L242 Difference]: Finished difference. Result has 232 places, 175 transitions, 665 flow [2021-12-17 22:47:40,396 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} [2021-12-17 22:47:40,396 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 73 predicate places. [2021-12-17 22:47:40,396 INFO L470 AbstractCegarLoop]: Abstraction has has 232 places, 175 transitions, 665 flow [2021-12-17 22:47:40,397 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) [2021-12-17 22:47:40,397 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:40,397 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] [2021-12-17 22:47:40,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 22:47:40,397 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:40,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:40,398 INFO L85 PathProgramCache]: Analyzing trace with hash 24599913, now seen corresponding path program 3 times [2021-12-17 22:47:40,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:40,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666741935] [2021-12-17 22:47:40,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:40,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:40,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:40,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:40,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666741935] [2021-12-17 22:47:40,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666741935] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:40,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:40,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:40,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559257012] [2021-12-17 22:47:40,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:40,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:40,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:40,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:40,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:40,493 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:40,495 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) [2021-12-17 22:47:40,495 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:40,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:40,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:40,746 INFO L129 PetriNetUnfolder]: 127/793 cut-off events. [2021-12-17 22:47:40,747 INFO L130 PetriNetUnfolder]: For 2097/2120 co-relation queries the response was YES. [2021-12-17 22:47:40,750 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2407 conditions, 793 events. 127/793 cut-off events. For 2097/2120 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4685 event pairs, 68 based on Foata normal form. 9/767 useless extension candidates. Maximal degree in co-relation 2274. Up to 239 conditions per place. [2021-12-17 22:47:40,752 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 61 selfloop transitions, 16 changer transitions 25/231 dead transitions. [2021-12-17 22:47:40,752 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 231 transitions, 1206 flow [2021-12-17 22:47:40,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 22:47:40,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-17 22:47:40,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2347 transitions. [2021-12-17 22:47:40,756 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7844251336898396 [2021-12-17 22:47:40,756 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2347 transitions. [2021-12-17 22:47:40,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2347 transitions. [2021-12-17 22:47:40,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:40,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2347 transitions. [2021-12-17 22:47:40,760 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) [2021-12-17 22:47:40,763 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) [2021-12-17 22:47:40,763 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) [2021-12-17 22:47:40,763 INFO L186 Difference]: Start difference. First operand has 232 places, 175 transitions, 665 flow. Second operand 17 states and 2347 transitions. [2021-12-17 22:47:40,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 231 transitions, 1206 flow [2021-12-17 22:47:40,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 231 transitions, 1163 flow, removed 21 selfloop flow, removed 12 redundant places. [2021-12-17 22:47:40,773 INFO L242 Difference]: Finished difference. Result has 231 places, 190 transitions, 817 flow [2021-12-17 22:47:40,774 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} [2021-12-17 22:47:40,774 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 72 predicate places. [2021-12-17 22:47:40,774 INFO L470 AbstractCegarLoop]: Abstraction has has 231 places, 190 transitions, 817 flow [2021-12-17 22:47:40,775 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) [2021-12-17 22:47:40,775 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:40,775 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] [2021-12-17 22:47:40,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 22:47:40,775 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:40,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:40,776 INFO L85 PathProgramCache]: Analyzing trace with hash -195580973, now seen corresponding path program 4 times [2021-12-17 22:47:40,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:40,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747813667] [2021-12-17 22:47:40,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:40,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:40,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:40,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:40,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747813667] [2021-12-17 22:47:40,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747813667] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:40,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:40,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:40,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111887162] [2021-12-17 22:47:40,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:40,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:40,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:40,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:40,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:40,911 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:40,912 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) [2021-12-17 22:47:40,912 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:40,912 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:40,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:41,169 INFO L129 PetriNetUnfolder]: 132/800 cut-off events. [2021-12-17 22:47:41,169 INFO L130 PetriNetUnfolder]: For 2005/2030 co-relation queries the response was YES. [2021-12-17 22:47:41,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2524 conditions, 800 events. 132/800 cut-off events. For 2005/2030 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4731 event pairs, 63 based on Foata normal form. 9/774 useless extension candidates. Maximal degree in co-relation 2431. Up to 229 conditions per place. [2021-12-17 22:47:41,174 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 63 selfloop transitions, 23 changer transitions 26/241 dead transitions. [2021-12-17 22:47:41,174 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 241 transitions, 1437 flow [2021-12-17 22:47:41,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 22:47:41,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-17 22:47:41,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2212 transitions. [2021-12-17 22:47:41,179 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7855113636363636 [2021-12-17 22:47:41,179 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2212 transitions. [2021-12-17 22:47:41,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2212 transitions. [2021-12-17 22:47:41,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:41,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2212 transitions. [2021-12-17 22:47:41,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 138.25) internal successors, (2212), 16 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:41,189 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) [2021-12-17 22:47:41,189 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) [2021-12-17 22:47:41,189 INFO L186 Difference]: Start difference. First operand has 231 places, 190 transitions, 817 flow. Second operand 16 states and 2212 transitions. [2021-12-17 22:47:41,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 241 transitions, 1437 flow [2021-12-17 22:47:41,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 241 transitions, 1380 flow, removed 26 selfloop flow, removed 9 redundant places. [2021-12-17 22:47:41,199 INFO L242 Difference]: Finished difference. Result has 240 places, 200 transitions, 974 flow [2021-12-17 22:47:41,200 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=974, PETRI_PLACES=240, PETRI_TRANSITIONS=200} [2021-12-17 22:47:41,201 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 81 predicate places. [2021-12-17 22:47:41,201 INFO L470 AbstractCegarLoop]: Abstraction has has 240 places, 200 transitions, 974 flow [2021-12-17 22:47:41,201 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) [2021-12-17 22:47:41,201 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:41,201 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] [2021-12-17 22:47:41,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 22:47:41,201 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:41,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:41,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1970300987, now seen corresponding path program 5 times [2021-12-17 22:47:41,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:41,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944836029] [2021-12-17 22:47:41,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:41,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:41,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:41,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:41,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944836029] [2021-12-17 22:47:41,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944836029] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:41,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:41,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:41,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549455315] [2021-12-17 22:47:41,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:41,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:41,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:41,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:41,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:41,301 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:41,302 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 200 transitions, 974 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) [2021-12-17 22:47:41,302 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:41,302 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:41,302 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:41,536 INFO L129 PetriNetUnfolder]: 137/825 cut-off events. [2021-12-17 22:47:41,536 INFO L130 PetriNetUnfolder]: For 2458/2485 co-relation queries the response was YES. [2021-12-17 22:47:41,539 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2753 conditions, 825 events. 137/825 cut-off events. For 2458/2485 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4942 event pairs, 64 based on Foata normal form. 10/800 useless extension candidates. Maximal degree in co-relation 2657. Up to 245 conditions per place. [2021-12-17 22:47:41,541 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 74 selfloop transitions, 23 changer transitions 25/251 dead transitions. [2021-12-17 22:47:41,542 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 251 transitions, 1726 flow [2021-12-17 22:47:41,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 22:47:41,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-17 22:47:41,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2208 transitions. [2021-12-17 22:47:41,544 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7840909090909091 [2021-12-17 22:47:41,544 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2208 transitions. [2021-12-17 22:47:41,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2208 transitions. [2021-12-17 22:47:41,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:41,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2208 transitions. [2021-12-17 22:47:41,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 138.0) internal successors, (2208), 16 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:41,549 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) [2021-12-17 22:47:41,549 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) [2021-12-17 22:47:41,550 INFO L186 Difference]: Start difference. First operand has 240 places, 200 transitions, 974 flow. Second operand 16 states and 2208 transitions. [2021-12-17 22:47:41,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 251 transitions, 1726 flow [2021-12-17 22:47:41,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 251 transitions, 1614 flow, removed 31 selfloop flow, removed 8 redundant places. [2021-12-17 22:47:41,562 INFO L242 Difference]: Finished difference. Result has 251 places, 210 transitions, 1121 flow [2021-12-17 22:47:41,563 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1121, PETRI_PLACES=251, PETRI_TRANSITIONS=210} [2021-12-17 22:47:41,563 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 92 predicate places. [2021-12-17 22:47:41,563 INFO L470 AbstractCegarLoop]: Abstraction has has 251 places, 210 transitions, 1121 flow [2021-12-17 22:47:41,563 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) [2021-12-17 22:47:41,563 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:41,564 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] [2021-12-17 22:47:41,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 22:47:41,564 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:41,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:41,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1187190855, now seen corresponding path program 6 times [2021-12-17 22:47:41,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:41,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292808957] [2021-12-17 22:47:41,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:41,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:41,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:41,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:41,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292808957] [2021-12-17 22:47:41,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292808957] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:41,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:41,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:41,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697939123] [2021-12-17 22:47:41,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:41,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:41,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:41,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:41,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:41,658 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:41,659 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 210 transitions, 1121 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) [2021-12-17 22:47:41,659 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:41,659 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:41,660 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:41,970 INFO L129 PetriNetUnfolder]: 147/867 cut-off events. [2021-12-17 22:47:41,970 INFO L130 PetriNetUnfolder]: For 2939/2965 co-relation queries the response was YES. [2021-12-17 22:47:41,973 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2975 conditions, 867 events. 147/867 cut-off events. For 2939/2965 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 5328 event pairs, 73 based on Foata normal form. 9/840 useless extension candidates. Maximal degree in co-relation 2874. Up to 245 conditions per place. [2021-12-17 22:47:41,976 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 85 selfloop transitions, 24 changer transitions 32/270 dead transitions. [2021-12-17 22:47:41,976 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 270 transitions, 2049 flow [2021-12-17 22:47:41,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-17 22:47:41,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-17 22:47:41,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2891 transitions. [2021-12-17 22:47:41,978 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7821969696969697 [2021-12-17 22:47:41,978 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2891 transitions. [2021-12-17 22:47:41,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2891 transitions. [2021-12-17 22:47:41,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:41,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2891 transitions. [2021-12-17 22:47:41,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 137.66666666666666) internal successors, (2891), 21 states have internal predecessors, (2891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:41,985 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) [2021-12-17 22:47:41,985 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) [2021-12-17 22:47:41,985 INFO L186 Difference]: Start difference. First operand has 251 places, 210 transitions, 1121 flow. Second operand 21 states and 2891 transitions. [2021-12-17 22:47:41,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 270 transitions, 2049 flow [2021-12-17 22:47:41,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 270 transitions, 1938 flow, removed 33 selfloop flow, removed 8 redundant places. [2021-12-17 22:47:41,999 INFO L242 Difference]: Finished difference. Result has 272 places, 220 transitions, 1289 flow [2021-12-17 22:47:41,999 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1054, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1289, PETRI_PLACES=272, PETRI_TRANSITIONS=220} [2021-12-17 22:47:42,000 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 113 predicate places. [2021-12-17 22:47:42,000 INFO L470 AbstractCegarLoop]: Abstraction has has 272 places, 220 transitions, 1289 flow [2021-12-17 22:47:42,000 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) [2021-12-17 22:47:42,000 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:42,000 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] [2021-12-17 22:47:42,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 22:47:42,000 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:42,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:42,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1809009679, now seen corresponding path program 7 times [2021-12-17 22:47:42,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:42,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592935652] [2021-12-17 22:47:42,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:42,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:42,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:42,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:42,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592935652] [2021-12-17 22:47:42,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592935652] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:42,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:42,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:42,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23497596] [2021-12-17 22:47:42,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:42,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:42,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:42,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:42,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:42,096 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:42,097 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 220 transitions, 1289 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) [2021-12-17 22:47:42,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:42,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:42,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:42,393 INFO L129 PetriNetUnfolder]: 148/893 cut-off events. [2021-12-17 22:47:42,393 INFO L130 PetriNetUnfolder]: For 3941/3973 co-relation queries the response was YES. [2021-12-17 22:47:42,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3232 conditions, 893 events. 148/893 cut-off events. For 3941/3973 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5640 event pairs, 72 based on Foata normal form. 9/864 useless extension candidates. Maximal degree in co-relation 3121. Up to 237 conditions per place. [2021-12-17 22:47:42,401 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 89 selfloop transitions, 26 changer transitions 33/277 dead transitions. [2021-12-17 22:47:42,401 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 277 transitions, 2250 flow [2021-12-17 22:47:42,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 22:47:42,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-17 22:47:42,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2756 transitions. [2021-12-17 22:47:42,426 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7829545454545455 [2021-12-17 22:47:42,426 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2756 transitions. [2021-12-17 22:47:42,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2756 transitions. [2021-12-17 22:47:42,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:42,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2756 transitions. [2021-12-17 22:47:42,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.8) internal successors, (2756), 20 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:42,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:42,433 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:42,433 INFO L186 Difference]: Start difference. First operand has 272 places, 220 transitions, 1289 flow. Second operand 20 states and 2756 transitions. [2021-12-17 22:47:42,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 277 transitions, 2250 flow [2021-12-17 22:47:42,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 277 transitions, 2090 flow, removed 65 selfloop flow, removed 12 redundant places. [2021-12-17 22:47:42,451 INFO L242 Difference]: Finished difference. Result has 283 places, 231 transitions, 1497 flow [2021-12-17 22:47:42,451 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1227, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1497, PETRI_PLACES=283, PETRI_TRANSITIONS=231} [2021-12-17 22:47:42,452 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 124 predicate places. [2021-12-17 22:47:42,452 INFO L470 AbstractCegarLoop]: Abstraction has has 283 places, 231 transitions, 1497 flow [2021-12-17 22:47:42,452 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) [2021-12-17 22:47:42,453 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:42,453 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] [2021-12-17 22:47:42,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 22:47:42,453 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:42,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:42,453 INFO L85 PathProgramCache]: Analyzing trace with hash 376522777, now seen corresponding path program 8 times [2021-12-17 22:47:42,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:42,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177189039] [2021-12-17 22:47:42,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:42,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:42,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:42,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:42,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177189039] [2021-12-17 22:47:42,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177189039] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:42,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:42,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:42,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102220001] [2021-12-17 22:47:42,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:42,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:42,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:42,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:42,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:42,563 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:42,564 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 231 transitions, 1497 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) [2021-12-17 22:47:42,564 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:42,564 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:42,564 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:42,863 INFO L129 PetriNetUnfolder]: 143/911 cut-off events. [2021-12-17 22:47:42,863 INFO L130 PetriNetUnfolder]: For 4269/4309 co-relation queries the response was YES. [2021-12-17 22:47:42,868 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3342 conditions, 911 events. 143/911 cut-off events. For 4269/4309 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5936 event pairs, 68 based on Foata normal form. 12/884 useless extension candidates. Maximal degree in co-relation 3224. Up to 273 conditions per place. [2021-12-17 22:47:42,872 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 86 selfloop transitions, 32 changer transitions 33/280 dead transitions. [2021-12-17 22:47:42,872 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 280 transitions, 2422 flow [2021-12-17 22:47:42,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 22:47:42,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-17 22:47:42,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2751 transitions. [2021-12-17 22:47:42,875 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7815340909090909 [2021-12-17 22:47:42,876 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2751 transitions. [2021-12-17 22:47:42,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2751 transitions. [2021-12-17 22:47:42,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:42,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2751 transitions. [2021-12-17 22:47:42,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.55) internal successors, (2751), 20 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:42,882 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) [2021-12-17 22:47:42,883 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) [2021-12-17 22:47:42,883 INFO L186 Difference]: Start difference. First operand has 283 places, 231 transitions, 1497 flow. Second operand 20 states and 2751 transitions. [2021-12-17 22:47:42,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 280 transitions, 2422 flow [2021-12-17 22:47:42,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 280 transitions, 2281 flow, removed 61 selfloop flow, removed 12 redundant places. [2021-12-17 22:47:42,904 INFO L242 Difference]: Finished difference. Result has 291 places, 237 transitions, 1617 flow [2021-12-17 22:47:42,905 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1414, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1617, PETRI_PLACES=291, PETRI_TRANSITIONS=237} [2021-12-17 22:47:42,905 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 132 predicate places. [2021-12-17 22:47:42,905 INFO L470 AbstractCegarLoop]: Abstraction has has 291 places, 237 transitions, 1617 flow [2021-12-17 22:47:42,906 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) [2021-12-17 22:47:42,906 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:42,906 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] [2021-12-17 22:47:42,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 22:47:42,906 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:42,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:42,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1634270607, now seen corresponding path program 9 times [2021-12-17 22:47:42,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:42,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147494102] [2021-12-17 22:47:42,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:42,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:43,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:43,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:43,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147494102] [2021-12-17 22:47:43,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147494102] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:43,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:43,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:43,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306069244] [2021-12-17 22:47:43,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:43,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:43,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:43,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:43,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:43,011 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:43,011 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 237 transitions, 1617 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) [2021-12-17 22:47:43,011 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:43,012 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:43,012 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:43,327 INFO L129 PetriNetUnfolder]: 141/907 cut-off events. [2021-12-17 22:47:43,328 INFO L130 PetriNetUnfolder]: For 3960/3990 co-relation queries the response was YES. [2021-12-17 22:47:43,333 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3276 conditions, 907 events. 141/907 cut-off events. For 3960/3990 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5880 event pairs, 58 based on Foata normal form. 11/885 useless extension candidates. Maximal degree in co-relation 3163. Up to 256 conditions per place. [2021-12-17 22:47:43,336 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 91 selfloop transitions, 33 changer transitions 37/290 dead transitions. [2021-12-17 22:47:43,337 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 290 transitions, 2576 flow [2021-12-17 22:47:43,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-17 22:47:43,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-17 22:47:43,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3019 transitions. [2021-12-17 22:47:43,340 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7797004132231405 [2021-12-17 22:47:43,340 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3019 transitions. [2021-12-17 22:47:43,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3019 transitions. [2021-12-17 22:47:43,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:43,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3019 transitions. [2021-12-17 22:47:43,344 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) [2021-12-17 22:47:43,346 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) [2021-12-17 22:47:43,347 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) [2021-12-17 22:47:43,347 INFO L186 Difference]: Start difference. First operand has 291 places, 237 transitions, 1617 flow. Second operand 22 states and 3019 transitions. [2021-12-17 22:47:43,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 290 transitions, 2576 flow [2021-12-17 22:47:43,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 290 transitions, 2465 flow, removed 32 selfloop flow, removed 12 redundant places. [2021-12-17 22:47:43,370 INFO L242 Difference]: Finished difference. Result has 301 places, 236 transitions, 1656 flow [2021-12-17 22:47:43,370 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1553, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1656, PETRI_PLACES=301, PETRI_TRANSITIONS=236} [2021-12-17 22:47:43,371 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 142 predicate places. [2021-12-17 22:47:43,371 INFO L470 AbstractCegarLoop]: Abstraction has has 301 places, 236 transitions, 1656 flow [2021-12-17 22:47:43,371 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) [2021-12-17 22:47:43,372 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:43,372 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] [2021-12-17 22:47:43,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 22:47:43,372 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:43,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:43,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1680844377, now seen corresponding path program 10 times [2021-12-17 22:47:43,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:43,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045183145] [2021-12-17 22:47:43,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:43,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:43,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:43,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:43,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045183145] [2021-12-17 22:47:43,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045183145] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:43,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:43,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:43,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139763799] [2021-12-17 22:47:43,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:43,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:43,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:43,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:43,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:43,475 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:43,476 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 236 transitions, 1656 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) [2021-12-17 22:47:43,476 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:43,476 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:43,476 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:43,742 INFO L129 PetriNetUnfolder]: 123/825 cut-off events. [2021-12-17 22:47:43,742 INFO L130 PetriNetUnfolder]: For 3471/3500 co-relation queries the response was YES. [2021-12-17 22:47:43,747 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2934 conditions, 825 events. 123/825 cut-off events. For 3471/3500 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5062 event pairs, 57 based on Foata normal form. 12/804 useless extension candidates. Maximal degree in co-relation 2820. Up to 250 conditions per place. [2021-12-17 22:47:43,750 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 82 selfloop transitions, 21 changer transitions 34/266 dead transitions. [2021-12-17 22:47:43,750 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 266 transitions, 2244 flow [2021-12-17 22:47:43,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 22:47:43,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-17 22:47:43,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2471 transitions. [2021-12-17 22:47:43,753 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7799873737373737 [2021-12-17 22:47:43,753 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2471 transitions. [2021-12-17 22:47:43,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2471 transitions. [2021-12-17 22:47:43,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:43,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2471 transitions. [2021-12-17 22:47:43,756 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) [2021-12-17 22:47:43,759 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) [2021-12-17 22:47:43,760 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) [2021-12-17 22:47:43,760 INFO L186 Difference]: Start difference. First operand has 301 places, 236 transitions, 1656 flow. Second operand 18 states and 2471 transitions. [2021-12-17 22:47:43,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 266 transitions, 2244 flow [2021-12-17 22:47:43,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 266 transitions, 2107 flow, removed 41 selfloop flow, removed 16 redundant places. [2021-12-17 22:47:43,780 INFO L242 Difference]: Finished difference. Result has 295 places, 221 transitions, 1392 flow [2021-12-17 22:47:43,781 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1552, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1392, PETRI_PLACES=295, PETRI_TRANSITIONS=221} [2021-12-17 22:47:43,781 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 136 predicate places. [2021-12-17 22:47:43,782 INFO L470 AbstractCegarLoop]: Abstraction has has 295 places, 221 transitions, 1392 flow [2021-12-17 22:47:43,782 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) [2021-12-17 22:47:43,782 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:43,782 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] [2021-12-17 22:47:43,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 22:47:43,783 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:43,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:43,783 INFO L85 PathProgramCache]: Analyzing trace with hash -398293221, now seen corresponding path program 11 times [2021-12-17 22:47:43,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:43,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071916002] [2021-12-17 22:47:43,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:43,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:43,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:43,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:43,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071916002] [2021-12-17 22:47:43,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071916002] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:43,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:43,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:43,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011776667] [2021-12-17 22:47:43,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:43,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:43,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:43,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:43,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:43,876 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:43,877 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 221 transitions, 1392 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) [2021-12-17 22:47:43,877 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:43,877 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:43,878 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:44,109 INFO L129 PetriNetUnfolder]: 118/807 cut-off events. [2021-12-17 22:47:44,109 INFO L130 PetriNetUnfolder]: For 3061/3086 co-relation queries the response was YES. [2021-12-17 22:47:44,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2802 conditions, 807 events. 118/807 cut-off events. For 3061/3086 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4869 event pairs, 59 based on Foata normal form. 9/783 useless extension candidates. Maximal degree in co-relation 2731. Up to 243 conditions per place. [2021-12-17 22:47:44,139 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 76 selfloop transitions, 25 changer transitions 30/260 dead transitions. [2021-12-17 22:47:44,139 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 260 transitions, 2133 flow [2021-12-17 22:47:44,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 22:47:44,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-17 22:47:44,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2481 transitions. [2021-12-17 22:47:44,146 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7831439393939394 [2021-12-17 22:47:44,146 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2481 transitions. [2021-12-17 22:47:44,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2481 transitions. [2021-12-17 22:47:44,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:44,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2481 transitions. [2021-12-17 22:47:44,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.83333333333334) internal successors, (2481), 18 states have internal predecessors, (2481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:44,153 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) [2021-12-17 22:47:44,154 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) [2021-12-17 22:47:44,154 INFO L186 Difference]: Start difference. First operand has 295 places, 221 transitions, 1392 flow. Second operand 18 states and 2481 transitions. [2021-12-17 22:47:44,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 260 transitions, 2133 flow [2021-12-17 22:47:44,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 260 transitions, 1981 flow, removed 27 selfloop flow, removed 15 redundant places. [2021-12-17 22:47:44,170 INFO L242 Difference]: Finished difference. Result has 281 places, 224 transitions, 1425 flow [2021-12-17 22:47:44,171 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1297, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1425, PETRI_PLACES=281, PETRI_TRANSITIONS=224} [2021-12-17 22:47:44,171 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 122 predicate places. [2021-12-17 22:47:44,171 INFO L470 AbstractCegarLoop]: Abstraction has has 281 places, 224 transitions, 1425 flow [2021-12-17 22:47:44,172 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) [2021-12-17 22:47:44,172 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:44,172 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] [2021-12-17 22:47:44,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 22:47:44,172 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:44,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:44,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1530291593, now seen corresponding path program 12 times [2021-12-17 22:47:44,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:44,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066135250] [2021-12-17 22:47:44,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:44,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:44,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:44,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:44,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066135250] [2021-12-17 22:47:44,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066135250] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:44,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:44,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:44,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559866009] [2021-12-17 22:47:44,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:44,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:44,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:44,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:44,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:44,247 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:44,247 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 224 transitions, 1425 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) [2021-12-17 22:47:44,248 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:44,248 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:44,248 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:44,532 INFO L129 PetriNetUnfolder]: 111/787 cut-off events. [2021-12-17 22:47:44,532 INFO L130 PetriNetUnfolder]: For 2649/2679 co-relation queries the response was YES. [2021-12-17 22:47:44,537 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2634 conditions, 787 events. 111/787 cut-off events. For 2649/2679 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4701 event pairs, 59 based on Foata normal form. 11/765 useless extension candidates. Maximal degree in co-relation 2566. Up to 241 conditions per place. [2021-12-17 22:47:44,539 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 73 selfloop transitions, 17 changer transitions 29/248 dead transitions. [2021-12-17 22:47:44,539 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 248 transitions, 1905 flow [2021-12-17 22:47:44,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 22:47:44,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-17 22:47:44,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2474 transitions. [2021-12-17 22:47:44,541 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7809343434343434 [2021-12-17 22:47:44,541 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2474 transitions. [2021-12-17 22:47:44,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2474 transitions. [2021-12-17 22:47:44,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:44,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2474 transitions. [2021-12-17 22:47:44,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.44444444444446) internal successors, (2474), 18 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:44,549 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) [2021-12-17 22:47:44,550 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) [2021-12-17 22:47:44,550 INFO L186 Difference]: Start difference. First operand has 281 places, 224 transitions, 1425 flow. Second operand 18 states and 2474 transitions. [2021-12-17 22:47:44,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 248 transitions, 1905 flow [2021-12-17 22:47:44,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 248 transitions, 1802 flow, removed 26 selfloop flow, removed 8 redundant places. [2021-12-17 22:47:44,567 INFO L242 Difference]: Finished difference. Result has 289 places, 215 transitions, 1265 flow [2021-12-17 22:47:44,568 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1345, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1265, PETRI_PLACES=289, PETRI_TRANSITIONS=215} [2021-12-17 22:47:44,569 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 130 predicate places. [2021-12-17 22:47:44,569 INFO L470 AbstractCegarLoop]: Abstraction has has 289 places, 215 transitions, 1265 flow [2021-12-17 22:47:44,569 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) [2021-12-17 22:47:44,569 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:44,569 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] [2021-12-17 22:47:44,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 22:47:44,569 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:44,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:44,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1732632061, now seen corresponding path program 13 times [2021-12-17 22:47:44,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:44,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008999583] [2021-12-17 22:47:44,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:44,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:44,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:44,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:44,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008999583] [2021-12-17 22:47:44,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008999583] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:44,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:44,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:44,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848510763] [2021-12-17 22:47:44,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:44,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:44,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:44,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:44,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:44,651 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:44,652 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 215 transitions, 1265 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) [2021-12-17 22:47:44,652 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:44,652 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:44,652 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:44,901 INFO L129 PetriNetUnfolder]: 102/728 cut-off events. [2021-12-17 22:47:44,901 INFO L130 PetriNetUnfolder]: For 2186/2216 co-relation queries the response was YES. [2021-12-17 22:47:44,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2349 conditions, 728 events. 102/728 cut-off events. For 2186/2216 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4179 event pairs, 56 based on Foata normal form. 11/709 useless extension candidates. Maximal degree in co-relation 2279. Up to 231 conditions per place. [2021-12-17 22:47:44,909 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 64 selfloop transitions, 5 changer transitions 32/230 dead transitions. [2021-12-17 22:47:44,909 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 230 transitions, 1568 flow [2021-12-17 22:47:44,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 22:47:44,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-17 22:47:44,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2330 transitions. [2021-12-17 22:47:44,912 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7787433155080213 [2021-12-17 22:47:44,912 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2330 transitions. [2021-12-17 22:47:44,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2330 transitions. [2021-12-17 22:47:44,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:44,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2330 transitions. [2021-12-17 22:47:44,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.05882352941177) internal successors, (2330), 17 states have internal predecessors, (2330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:44,917 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) [2021-12-17 22:47:44,918 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) [2021-12-17 22:47:44,918 INFO L186 Difference]: Start difference. First operand has 289 places, 215 transitions, 1265 flow. Second operand 17 states and 2330 transitions. [2021-12-17 22:47:44,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 230 transitions, 1568 flow [2021-12-17 22:47:44,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 230 transitions, 1474 flow, removed 19 selfloop flow, removed 18 redundant places. [2021-12-17 22:47:44,932 INFO L242 Difference]: Finished difference. Result has 275 places, 195 transitions, 937 flow [2021-12-17 22:47:44,932 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=937, PETRI_PLACES=275, PETRI_TRANSITIONS=195} [2021-12-17 22:47:44,933 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 116 predicate places. [2021-12-17 22:47:44,933 INFO L470 AbstractCegarLoop]: Abstraction has has 275 places, 195 transitions, 937 flow [2021-12-17 22:47:44,933 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) [2021-12-17 22:47:44,933 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:44,934 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] [2021-12-17 22:47:44,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 22:47:44,934 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:44,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:44,934 INFO L85 PathProgramCache]: Analyzing trace with hash -367435761, now seen corresponding path program 14 times [2021-12-17 22:47:44,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:44,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059798816] [2021-12-17 22:47:44,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:44,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:44,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:45,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:45,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:45,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059798816] [2021-12-17 22:47:45,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059798816] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:45,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:45,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:45,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046737896] [2021-12-17 22:47:45,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:45,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:45,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:45,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:45,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:45,017 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:45,017 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 195 transitions, 937 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) [2021-12-17 22:47:45,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:45,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:45,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:45,304 INFO L129 PetriNetUnfolder]: 102/758 cut-off events. [2021-12-17 22:47:45,304 INFO L130 PetriNetUnfolder]: For 1974/1998 co-relation queries the response was YES. [2021-12-17 22:47:45,308 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2341 conditions, 758 events. 102/758 cut-off events. For 1974/1998 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4498 event pairs, 54 based on Foata normal form. 11/741 useless extension candidates. Maximal degree in co-relation 2279. Up to 210 conditions per place. [2021-12-17 22:47:45,310 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 59 selfloop transitions, 22 changer transitions 34/244 dead transitions. [2021-12-17 22:47:45,310 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 244 transitions, 1659 flow [2021-12-17 22:47:45,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-17 22:47:45,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-17 22:47:45,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3017 transitions. [2021-12-17 22:47:45,312 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7791838842975206 [2021-12-17 22:47:45,312 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3017 transitions. [2021-12-17 22:47:45,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3017 transitions. [2021-12-17 22:47:45,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:45,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3017 transitions. [2021-12-17 22:47:45,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.13636363636363) internal successors, (3017), 22 states have internal predecessors, (3017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:45,318 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) [2021-12-17 22:47:45,318 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) [2021-12-17 22:47:45,319 INFO L186 Difference]: Start difference. First operand has 275 places, 195 transitions, 937 flow. Second operand 22 states and 3017 transitions. [2021-12-17 22:47:45,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 244 transitions, 1659 flow [2021-12-17 22:47:45,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 244 transitions, 1503 flow, removed 39 selfloop flow, removed 20 redundant places. [2021-12-17 22:47:45,330 INFO L242 Difference]: Finished difference. Result has 261 places, 200 transitions, 1005 flow [2021-12-17 22:47:45,330 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1005, PETRI_PLACES=261, PETRI_TRANSITIONS=200} [2021-12-17 22:47:45,330 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 102 predicate places. [2021-12-17 22:47:45,330 INFO L470 AbstractCegarLoop]: Abstraction has has 261 places, 200 transitions, 1005 flow [2021-12-17 22:47:45,331 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) [2021-12-17 22:47:45,331 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:45,331 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] [2021-12-17 22:47:45,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 22:47:45,331 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:45,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:45,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1726077209, now seen corresponding path program 15 times [2021-12-17 22:47:45,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:45,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865607932] [2021-12-17 22:47:45,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:45,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:45,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:45,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:45,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865607932] [2021-12-17 22:47:45,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865607932] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:45,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:45,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:45,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863422806] [2021-12-17 22:47:45,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:45,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:45,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:45,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:45,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:45,419 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:45,420 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 200 transitions, 1005 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) [2021-12-17 22:47:45,420 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:45,420 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:45,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:45,678 INFO L129 PetriNetUnfolder]: 103/762 cut-off events. [2021-12-17 22:47:45,678 INFO L130 PetriNetUnfolder]: For 2009/2031 co-relation queries the response was YES. [2021-12-17 22:47:45,682 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2400 conditions, 762 events. 103/762 cut-off events. For 2009/2031 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4555 event pairs, 53 based on Foata normal form. 9/742 useless extension candidates. Maximal degree in co-relation 2340. Up to 217 conditions per place. [2021-12-17 22:47:45,684 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 60 selfloop transitions, 27 changer transitions 27/243 dead transitions. [2021-12-17 22:47:45,684 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 243 transitions, 1667 flow [2021-12-17 22:47:45,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 22:47:45,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-17 22:47:45,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2342 transitions. [2021-12-17 22:47:45,686 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7827540106951871 [2021-12-17 22:47:45,686 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2342 transitions. [2021-12-17 22:47:45,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2342 transitions. [2021-12-17 22:47:45,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:45,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2342 transitions. [2021-12-17 22:47:45,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.76470588235293) internal successors, (2342), 17 states have internal predecessors, (2342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:45,691 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) [2021-12-17 22:47:45,691 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) [2021-12-17 22:47:45,691 INFO L186 Difference]: Start difference. First operand has 261 places, 200 transitions, 1005 flow. Second operand 17 states and 2342 transitions. [2021-12-17 22:47:45,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 243 transitions, 1667 flow [2021-12-17 22:47:45,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 243 transitions, 1581 flow, removed 30 selfloop flow, removed 13 redundant places. [2021-12-17 22:47:45,702 INFO L242 Difference]: Finished difference. Result has 260 places, 208 transitions, 1151 flow [2021-12-17 22:47:45,702 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=959, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1151, PETRI_PLACES=260, PETRI_TRANSITIONS=208} [2021-12-17 22:47:45,702 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 101 predicate places. [2021-12-17 22:47:45,703 INFO L470 AbstractCegarLoop]: Abstraction has has 260 places, 208 transitions, 1151 flow [2021-12-17 22:47:45,703 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) [2021-12-17 22:47:45,703 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:45,703 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] [2021-12-17 22:47:45,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 22:47:45,703 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:45,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:45,704 INFO L85 PathProgramCache]: Analyzing trace with hash 286555085, now seen corresponding path program 16 times [2021-12-17 22:47:45,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:45,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9607045] [2021-12-17 22:47:45,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:45,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:45,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:45,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:45,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9607045] [2021-12-17 22:47:45,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9607045] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:45,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:45,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:45,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221529394] [2021-12-17 22:47:45,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:45,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:45,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:45,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:45,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:45,788 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:45,788 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 208 transitions, 1151 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) [2021-12-17 22:47:45,788 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:45,789 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:45,789 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:46,037 INFO L129 PetriNetUnfolder]: 94/727 cut-off events. [2021-12-17 22:47:46,037 INFO L130 PetriNetUnfolder]: For 1923/1947 co-relation queries the response was YES. [2021-12-17 22:47:46,041 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2270 conditions, 727 events. 94/727 cut-off events. For 1923/1947 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4221 event pairs, 54 based on Foata normal form. 11/710 useless extension candidates. Maximal degree in co-relation 2211. Up to 211 conditions per place. [2021-12-17 22:47:46,043 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 57 selfloop transitions, 13 changer transitions 33/232 dead transitions. [2021-12-17 22:47:46,043 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 232 transitions, 1555 flow [2021-12-17 22:47:46,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 22:47:46,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-17 22:47:46,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2471 transitions. [2021-12-17 22:47:46,045 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7799873737373737 [2021-12-17 22:47:46,045 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2471 transitions. [2021-12-17 22:47:46,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2471 transitions. [2021-12-17 22:47:46,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:46,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2471 transitions. [2021-12-17 22:47:46,048 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) [2021-12-17 22:47:46,050 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) [2021-12-17 22:47:46,051 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) [2021-12-17 22:47:46,051 INFO L186 Difference]: Start difference. First operand has 260 places, 208 transitions, 1151 flow. Second operand 18 states and 2471 transitions. [2021-12-17 22:47:46,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 232 transitions, 1555 flow [2021-12-17 22:47:46,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 232 transitions, 1465 flow, removed 23 selfloop flow, removed 9 redundant places. [2021-12-17 22:47:46,062 INFO L242 Difference]: Finished difference. Result has 267 places, 193 transitions, 924 flow [2021-12-17 22:47:46,062 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=924, PETRI_PLACES=267, PETRI_TRANSITIONS=193} [2021-12-17 22:47:46,063 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 108 predicate places. [2021-12-17 22:47:46,063 INFO L470 AbstractCegarLoop]: Abstraction has has 267 places, 193 transitions, 924 flow [2021-12-17 22:47:46,063 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) [2021-12-17 22:47:46,063 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:46,063 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] [2021-12-17 22:47:46,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-17 22:47:46,063 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:46,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:46,064 INFO L85 PathProgramCache]: Analyzing trace with hash 411587479, now seen corresponding path program 17 times [2021-12-17 22:47:46,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:46,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677272747] [2021-12-17 22:47:46,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:46,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:46,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:46,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:46,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677272747] [2021-12-17 22:47:46,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677272747] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:46,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:46,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:46,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958758136] [2021-12-17 22:47:46,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:46,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:46,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:46,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:46,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:46,164 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:46,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 193 transitions, 924 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) [2021-12-17 22:47:46,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:46,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:46,165 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:46,457 INFO L129 PetriNetUnfolder]: 94/727 cut-off events. [2021-12-17 22:47:46,458 INFO L130 PetriNetUnfolder]: For 1958/1982 co-relation queries the response was YES. [2021-12-17 22:47:46,461 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2261 conditions, 727 events. 94/727 cut-off events. For 1958/1982 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4246 event pairs, 55 based on Foata normal form. 10/709 useless extension candidates. Maximal degree in co-relation 2201. Up to 202 conditions per place. [2021-12-17 22:47:46,463 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 53 selfloop transitions, 19 changer transitions 34/235 dead transitions. [2021-12-17 22:47:46,463 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 235 transitions, 1619 flow [2021-12-17 22:47:46,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-17 22:47:46,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-17 22:47:46,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2880 transitions. [2021-12-17 22:47:46,466 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7792207792207793 [2021-12-17 22:47:46,466 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2880 transitions. [2021-12-17 22:47:46,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2880 transitions. [2021-12-17 22:47:46,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:46,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2880 transitions. [2021-12-17 22:47:46,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 137.14285714285714) internal successors, (2880), 21 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:46,472 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) [2021-12-17 22:47:46,472 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) [2021-12-17 22:47:46,472 INFO L186 Difference]: Start difference. First operand has 267 places, 193 transitions, 924 flow. Second operand 21 states and 2880 transitions. [2021-12-17 22:47:46,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 235 transitions, 1619 flow [2021-12-17 22:47:46,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 235 transitions, 1465 flow, removed 39 selfloop flow, removed 17 redundant places. [2021-12-17 22:47:46,483 INFO L242 Difference]: Finished difference. Result has 260 places, 196 transitions, 993 flow [2021-12-17 22:47:46,483 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=993, PETRI_PLACES=260, PETRI_TRANSITIONS=196} [2021-12-17 22:47:46,484 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 101 predicate places. [2021-12-17 22:47:46,484 INFO L470 AbstractCegarLoop]: Abstraction has has 260 places, 196 transitions, 993 flow [2021-12-17 22:47:46,485 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) [2021-12-17 22:47:46,485 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:46,485 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] [2021-12-17 22:47:46,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-17 22:47:46,485 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:46,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:46,485 INFO L85 PathProgramCache]: Analyzing trace with hash 245571019, now seen corresponding path program 18 times [2021-12-17 22:47:46,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:46,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263152642] [2021-12-17 22:47:46,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:46,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:46,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:46,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:46,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263152642] [2021-12-17 22:47:46,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263152642] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:46,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:46,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:46,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359944731] [2021-12-17 22:47:46,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:46,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:46,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:46,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:46,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:46,567 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:46,568 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 196 transitions, 993 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) [2021-12-17 22:47:46,568 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:46,568 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:46,568 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:46,846 INFO L129 PetriNetUnfolder]: 88/693 cut-off events. [2021-12-17 22:47:46,847 INFO L130 PetriNetUnfolder]: For 1761/1787 co-relation queries the response was YES. [2021-12-17 22:47:46,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2132 conditions, 693 events. 88/693 cut-off events. For 1761/1787 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3908 event pairs, 55 based on Foata normal form. 11/673 useless extension candidates. Maximal degree in co-relation 2071. Up to 206 conditions per place. [2021-12-17 22:47:46,852 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 49 selfloop transitions, 21 changer transitions 30/229 dead transitions. [2021-12-17 22:47:46,852 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 229 transitions, 1550 flow [2021-12-17 22:47:46,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 22:47:46,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-17 22:47:46,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2475 transitions. [2021-12-17 22:47:46,855 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.78125 [2021-12-17 22:47:46,855 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2475 transitions. [2021-12-17 22:47:46,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2475 transitions. [2021-12-17 22:47:46,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:46,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2475 transitions. [2021-12-17 22:47:46,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.5) internal successors, (2475), 18 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:46,861 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) [2021-12-17 22:47:46,861 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) [2021-12-17 22:47:46,861 INFO L186 Difference]: Start difference. First operand has 260 places, 196 transitions, 993 flow. Second operand 18 states and 2475 transitions. [2021-12-17 22:47:46,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 229 transitions, 1550 flow [2021-12-17 22:47:46,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 229 transitions, 1425 flow, removed 44 selfloop flow, removed 15 redundant places. [2021-12-17 22:47:46,873 INFO L242 Difference]: Finished difference. Result has 254 places, 197 transitions, 1011 flow [2021-12-17 22:47:46,873 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1011, PETRI_PLACES=254, PETRI_TRANSITIONS=197} [2021-12-17 22:47:46,873 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 95 predicate places. [2021-12-17 22:47:46,873 INFO L470 AbstractCegarLoop]: Abstraction has has 254 places, 197 transitions, 1011 flow [2021-12-17 22:47:46,874 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) [2021-12-17 22:47:46,874 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:46,874 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] [2021-12-17 22:47:46,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-17 22:47:46,874 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:46,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:46,875 INFO L85 PathProgramCache]: Analyzing trace with hash 754218069, now seen corresponding path program 19 times [2021-12-17 22:47:46,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:46,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074880950] [2021-12-17 22:47:46,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:46,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:46,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:46,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:46,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074880950] [2021-12-17 22:47:46,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074880950] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:46,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:46,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:46,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578578819] [2021-12-17 22:47:46,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:46,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:46,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:46,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:46,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:46,969 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:46,970 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 197 transitions, 1011 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) [2021-12-17 22:47:46,970 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:46,970 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:46,970 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:47,210 INFO L129 PetriNetUnfolder]: 86/683 cut-off events. [2021-12-17 22:47:47,211 INFO L130 PetriNetUnfolder]: For 1474/1498 co-relation queries the response was YES. [2021-12-17 22:47:47,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1995 conditions, 683 events. 86/683 cut-off events. For 1474/1498 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3843 event pairs, 54 based on Foata normal form. 10/664 useless extension candidates. Maximal degree in co-relation 1940. Up to 205 conditions per place. [2021-12-17 22:47:47,215 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 48 selfloop transitions, 12 changer transitions 33/222 dead transitions. [2021-12-17 22:47:47,215 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 222 transitions, 1384 flow [2021-12-17 22:47:47,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 22:47:47,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-17 22:47:47,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2338 transitions. [2021-12-17 22:47:47,216 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7814171122994652 [2021-12-17 22:47:47,217 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2338 transitions. [2021-12-17 22:47:47,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2338 transitions. [2021-12-17 22:47:47,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:47,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2338 transitions. [2021-12-17 22:47:47,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.52941176470588) internal successors, (2338), 17 states have internal predecessors, (2338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:47,223 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) [2021-12-17 22:47:47,223 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) [2021-12-17 22:47:47,223 INFO L186 Difference]: Start difference. First operand has 254 places, 197 transitions, 1011 flow. Second operand 17 states and 2338 transitions. [2021-12-17 22:47:47,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 222 transitions, 1384 flow [2021-12-17 22:47:47,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 222 transitions, 1268 flow, removed 25 selfloop flow, removed 13 redundant places. [2021-12-17 22:47:47,232 INFO L242 Difference]: Finished difference. Result has 255 places, 188 transitions, 845 flow [2021-12-17 22:47:47,232 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=845, PETRI_PLACES=255, PETRI_TRANSITIONS=188} [2021-12-17 22:47:47,233 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 96 predicate places. [2021-12-17 22:47:47,233 INFO L470 AbstractCegarLoop]: Abstraction has has 255 places, 188 transitions, 845 flow [2021-12-17 22:47:47,233 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) [2021-12-17 22:47:47,233 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:47,233 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] [2021-12-17 22:47:47,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-17 22:47:47,234 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:47,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:47,234 INFO L85 PathProgramCache]: Analyzing trace with hash -132396241, now seen corresponding path program 20 times [2021-12-17 22:47:47,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:47,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872762340] [2021-12-17 22:47:47,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:47,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:47,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:47,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:47,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872762340] [2021-12-17 22:47:47,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872762340] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:47,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:47,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:47,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843623153] [2021-12-17 22:47:47,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:47,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:47,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:47,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:47,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:47,324 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:47,325 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 188 transitions, 845 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) [2021-12-17 22:47:47,325 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:47,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:47,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:47,535 INFO L129 PetriNetUnfolder]: 74/603 cut-off events. [2021-12-17 22:47:47,535 INFO L130 PetriNetUnfolder]: For 1154/1176 co-relation queries the response was YES. [2021-12-17 22:47:47,537 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1688 conditions, 603 events. 74/603 cut-off events. For 1154/1176 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3155 event pairs, 51 based on Foata normal form. 9/584 useless extension candidates. Maximal degree in co-relation 1635. Up to 185 conditions per place. [2021-12-17 22:47:47,538 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 34 selfloop transitions, 0 changer transitions 45/202 dead transitions. [2021-12-17 22:47:47,538 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 202 transitions, 1047 flow [2021-12-17 22:47:47,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 22:47:47,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-17 22:47:47,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2462 transitions. [2021-12-17 22:47:47,541 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7771464646464646 [2021-12-17 22:47:47,541 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2462 transitions. [2021-12-17 22:47:47,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2462 transitions. [2021-12-17 22:47:47,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:47,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2462 transitions. [2021-12-17 22:47:47,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.77777777777777) internal successors, (2462), 18 states have internal predecessors, (2462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:47,553 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) [2021-12-17 22:47:47,553 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) [2021-12-17 22:47:47,553 INFO L186 Difference]: Start difference. First operand has 255 places, 188 transitions, 845 flow. Second operand 18 states and 2462 transitions. [2021-12-17 22:47:47,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 202 transitions, 1047 flow [2021-12-17 22:47:47,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 202 transitions, 965 flow, removed 16 selfloop flow, removed 19 redundant places. [2021-12-17 22:47:47,560 INFO L242 Difference]: Finished difference. Result has 240 places, 157 transitions, 507 flow [2021-12-17 22:47:47,560 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=507, PETRI_PLACES=240, PETRI_TRANSITIONS=157} [2021-12-17 22:47:47,561 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 81 predicate places. [2021-12-17 22:47:47,561 INFO L470 AbstractCegarLoop]: Abstraction has has 240 places, 157 transitions, 507 flow [2021-12-17 22:47:47,561 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) [2021-12-17 22:47:47,561 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:47,561 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] [2021-12-17 22:47:47,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-17 22:47:47,561 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:47,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:47,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1299708379, now seen corresponding path program 2 times [2021-12-17 22:47:47,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:47,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892491222] [2021-12-17 22:47:47,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:47,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:47,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:47,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:47,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892491222] [2021-12-17 22:47:47,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892491222] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:47,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:47,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:47,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030708863] [2021-12-17 22:47:47,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:47,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:47,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:47,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:47,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:47,649 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:47,650 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 157 transitions, 507 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) [2021-12-17 22:47:47,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:47,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:47,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:47,856 INFO L129 PetriNetUnfolder]: 110/658 cut-off events. [2021-12-17 22:47:47,857 INFO L130 PetriNetUnfolder]: For 1334/1343 co-relation queries the response was YES. [2021-12-17 22:47:47,859 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1876 conditions, 658 events. 110/658 cut-off events. For 1334/1343 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3324 event pairs, 50 based on Foata normal form. 2/636 useless extension candidates. Maximal degree in co-relation 1832. Up to 156 conditions per place. [2021-12-17 22:47:47,860 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 52 selfloop transitions, 16 changer transitions 21/209 dead transitions. [2021-12-17 22:47:47,860 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 209 transitions, 1094 flow [2021-12-17 22:47:47,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 22:47:47,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-17 22:47:47,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2343 transitions. [2021-12-17 22:47:47,862 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7830882352941176 [2021-12-17 22:47:47,862 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2343 transitions. [2021-12-17 22:47:47,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2343 transitions. [2021-12-17 22:47:47,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:47,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2343 transitions. [2021-12-17 22:47:47,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.8235294117647) internal successors, (2343), 17 states have internal predecessors, (2343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:47,867 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) [2021-12-17 22:47:47,867 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) [2021-12-17 22:47:47,867 INFO L186 Difference]: Start difference. First operand has 240 places, 157 transitions, 507 flow. Second operand 17 states and 2343 transitions. [2021-12-17 22:47:47,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 209 transitions, 1094 flow [2021-12-17 22:47:47,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 209 transitions, 1026 flow, removed 28 selfloop flow, removed 12 redundant places. [2021-12-17 22:47:47,872 INFO L242 Difference]: Finished difference. Result has 215 places, 172 transitions, 696 flow [2021-12-17 22:47:47,873 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=696, PETRI_PLACES=215, PETRI_TRANSITIONS=172} [2021-12-17 22:47:47,873 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 56 predicate places. [2021-12-17 22:47:47,873 INFO L470 AbstractCegarLoop]: Abstraction has has 215 places, 172 transitions, 696 flow [2021-12-17 22:47:47,873 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) [2021-12-17 22:47:47,873 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:47,874 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] [2021-12-17 22:47:47,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-17 22:47:47,874 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:47,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:47,875 INFO L85 PathProgramCache]: Analyzing trace with hash 889554111, now seen corresponding path program 3 times [2021-12-17 22:47:47,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:47,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252671617] [2021-12-17 22:47:47,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:47,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:47,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:47,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:47,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252671617] [2021-12-17 22:47:47,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252671617] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:47,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:47,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:47,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517985339] [2021-12-17 22:47:47,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:47,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:47,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:47,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:47,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:47,946 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:47,947 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 172 transitions, 696 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) [2021-12-17 22:47:47,947 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:47,947 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:47,947 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:48,143 INFO L129 PetriNetUnfolder]: 118/657 cut-off events. [2021-12-17 22:47:48,144 INFO L130 PetriNetUnfolder]: For 1890/1898 co-relation queries the response was YES. [2021-12-17 22:47:48,146 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2082 conditions, 657 events. 118/657 cut-off events. For 1890/1898 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3303 event pairs, 41 based on Foata normal form. 1/631 useless extension candidates. Maximal degree in co-relation 2036. Up to 149 conditions per place. [2021-12-17 22:47:48,148 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 58 selfloop transitions, 23 changer transitions 22/223 dead transitions. [2021-12-17 22:47:48,148 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 223 transitions, 1381 flow [2021-12-17 22:47:48,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 22:47:48,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-17 22:47:48,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2206 transitions. [2021-12-17 22:47:48,149 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7833806818181818 [2021-12-17 22:47:48,149 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2206 transitions. [2021-12-17 22:47:48,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2206 transitions. [2021-12-17 22:47:48,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:48,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2206 transitions. [2021-12-17 22:47:48,152 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) [2021-12-17 22:47:48,153 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) [2021-12-17 22:47:48,153 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) [2021-12-17 22:47:48,153 INFO L186 Difference]: Start difference. First operand has 215 places, 172 transitions, 696 flow. Second operand 16 states and 2206 transitions. [2021-12-17 22:47:48,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 223 transitions, 1381 flow [2021-12-17 22:47:48,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 223 transitions, 1264 flow, removed 56 selfloop flow, removed 7 redundant places. [2021-12-17 22:47:48,161 INFO L242 Difference]: Finished difference. Result has 228 places, 184 transitions, 873 flow [2021-12-17 22:47:48,162 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=873, PETRI_PLACES=228, PETRI_TRANSITIONS=184} [2021-12-17 22:47:48,164 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 69 predicate places. [2021-12-17 22:47:48,164 INFO L470 AbstractCegarLoop]: Abstraction has has 228 places, 184 transitions, 873 flow [2021-12-17 22:47:48,165 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) [2021-12-17 22:47:48,165 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:48,165 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] [2021-12-17 22:47:48,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-17 22:47:48,166 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:48,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:48,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1904803889, now seen corresponding path program 4 times [2021-12-17 22:47:48,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:48,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285680321] [2021-12-17 22:47:48,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:48,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:48,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:48,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:48,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285680321] [2021-12-17 22:47:48,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285680321] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:48,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:48,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:48,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910008261] [2021-12-17 22:47:48,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:48,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:48,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:48,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:48,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:48,270 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:48,271 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 184 transitions, 873 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) [2021-12-17 22:47:48,271 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:48,271 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:48,271 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:48,566 INFO L129 PetriNetUnfolder]: 118/670 cut-off events. [2021-12-17 22:47:48,567 INFO L130 PetriNetUnfolder]: For 2626/2634 co-relation queries the response was YES. [2021-12-17 22:47:48,570 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2314 conditions, 670 events. 118/670 cut-off events. For 2626/2634 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3430 event pairs, 41 based on Foata normal form. 1/646 useless extension candidates. Maximal degree in co-relation 2261. Up to 115 conditions per place. [2021-12-17 22:47:48,571 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 85 selfloop transitions, 20 changer transitions 35/260 dead transitions. [2021-12-17 22:47:48,571 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 260 transitions, 1882 flow [2021-12-17 22:47:48,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 22:47:48,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-17 22:47:48,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3298 transitions. [2021-12-17 22:47:48,574 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7807765151515151 [2021-12-17 22:47:48,574 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3298 transitions. [2021-12-17 22:47:48,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3298 transitions. [2021-12-17 22:47:48,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:48,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3298 transitions. [2021-12-17 22:47:48,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 137.41666666666666) internal successors, (3298), 24 states have internal predecessors, (3298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:48,579 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) [2021-12-17 22:47:48,579 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) [2021-12-17 22:47:48,579 INFO L186 Difference]: Start difference. First operand has 228 places, 184 transitions, 873 flow. Second operand 24 states and 3298 transitions. [2021-12-17 22:47:48,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 260 transitions, 1882 flow [2021-12-17 22:47:48,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 260 transitions, 1682 flow, removed 98 selfloop flow, removed 7 redundant places. [2021-12-17 22:47:48,589 INFO L242 Difference]: Finished difference. Result has 256 places, 186 transitions, 923 flow [2021-12-17 22:47:48,589 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=923, PETRI_PLACES=256, PETRI_TRANSITIONS=186} [2021-12-17 22:47:48,590 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 97 predicate places. [2021-12-17 22:47:48,590 INFO L470 AbstractCegarLoop]: Abstraction has has 256 places, 186 transitions, 923 flow [2021-12-17 22:47:48,590 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) [2021-12-17 22:47:48,590 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:48,590 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:47:48,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-17 22:47:48,591 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:48,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:48,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1161621975, now seen corresponding path program 5 times [2021-12-17 22:47:48,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:48,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77682993] [2021-12-17 22:47:48,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:48,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:48,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:48,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:48,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77682993] [2021-12-17 22:47:48,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77682993] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:48,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:48,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:48,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651221134] [2021-12-17 22:47:48,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:48,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:48,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:48,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:48,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:48,675 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:48,676 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 186 transitions, 923 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) [2021-12-17 22:47:48,676 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:48,676 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:48,676 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:48,991 INFO L129 PetriNetUnfolder]: 132/722 cut-off events. [2021-12-17 22:47:48,991 INFO L130 PetriNetUnfolder]: For 3840/3851 co-relation queries the response was YES. [2021-12-17 22:47:48,994 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2739 conditions, 722 events. 132/722 cut-off events. For 3840/3851 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3834 event pairs, 44 based on Foata normal form. 7/705 useless extension candidates. Maximal degree in co-relation 2673. Up to 163 conditions per place. [2021-12-17 22:47:48,996 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 77 selfloop transitions, 23 changer transitions 28/248 dead transitions. [2021-12-17 22:47:48,996 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 248 transitions, 1953 flow [2021-12-17 22:47:48,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-17 22:47:48,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-17 22:47:48,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3018 transitions. [2021-12-17 22:47:48,998 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7794421487603306 [2021-12-17 22:47:48,998 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3018 transitions. [2021-12-17 22:47:48,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3018 transitions. [2021-12-17 22:47:48,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:48,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3018 transitions. [2021-12-17 22:47:49,001 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) [2021-12-17 22:47:49,003 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) [2021-12-17 22:47:49,003 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) [2021-12-17 22:47:49,003 INFO L186 Difference]: Start difference. First operand has 256 places, 186 transitions, 923 flow. Second operand 22 states and 3018 transitions. [2021-12-17 22:47:49,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 248 transitions, 1953 flow [2021-12-17 22:47:49,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 248 transitions, 1813 flow, removed 40 selfloop flow, removed 18 redundant places. [2021-12-17 22:47:49,015 INFO L242 Difference]: Finished difference. Result has 257 places, 197 transitions, 1107 flow [2021-12-17 22:47:49,015 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=867, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1107, PETRI_PLACES=257, PETRI_TRANSITIONS=197} [2021-12-17 22:47:49,015 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 98 predicate places. [2021-12-17 22:47:49,015 INFO L470 AbstractCegarLoop]: Abstraction has has 257 places, 197 transitions, 1107 flow [2021-12-17 22:47:49,016 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) [2021-12-17 22:47:49,016 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:49,016 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:47:49,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-17 22:47:49,016 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:49,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:49,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1687067949, now seen corresponding path program 6 times [2021-12-17 22:47:49,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:49,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705686254] [2021-12-17 22:47:49,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:49,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:49,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:49,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:49,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705686254] [2021-12-17 22:47:49,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705686254] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:49,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:49,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:49,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101576439] [2021-12-17 22:47:49,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:49,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:49,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:49,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:49,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:49,091 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:49,091 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 197 transitions, 1107 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) [2021-12-17 22:47:49,091 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:49,092 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:49,092 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:49,337 INFO L129 PetriNetUnfolder]: 131/749 cut-off events. [2021-12-17 22:47:49,337 INFO L130 PetriNetUnfolder]: For 4477/4488 co-relation queries the response was YES. [2021-12-17 22:47:49,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2899 conditions, 749 events. 131/749 cut-off events. For 4477/4488 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 4148 event pairs, 53 based on Foata normal form. 1/726 useless extension candidates. Maximal degree in co-relation 2833. Up to 155 conditions per place. [2021-12-17 22:47:49,343 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 78 selfloop transitions, 26 changer transitions 29/253 dead transitions. [2021-12-17 22:47:49,343 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 253 transitions, 2114 flow [2021-12-17 22:47:49,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 22:47:49,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-17 22:47:49,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2750 transitions. [2021-12-17 22:47:49,345 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.78125 [2021-12-17 22:47:49,345 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2750 transitions. [2021-12-17 22:47:49,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2750 transitions. [2021-12-17 22:47:49,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:49,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2750 transitions. [2021-12-17 22:47:49,347 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) [2021-12-17 22:47:49,349 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) [2021-12-17 22:47:49,349 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) [2021-12-17 22:47:49,350 INFO L186 Difference]: Start difference. First operand has 257 places, 197 transitions, 1107 flow. Second operand 20 states and 2750 transitions. [2021-12-17 22:47:49,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 253 transitions, 2114 flow [2021-12-17 22:47:49,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 253 transitions, 2004 flow, removed 48 selfloop flow, removed 11 redundant places. [2021-12-17 22:47:49,364 INFO L242 Difference]: Finished difference. Result has 268 places, 208 transitions, 1350 flow [2021-12-17 22:47:49,364 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1063, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1350, PETRI_PLACES=268, PETRI_TRANSITIONS=208} [2021-12-17 22:47:49,365 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 109 predicate places. [2021-12-17 22:47:49,365 INFO L470 AbstractCegarLoop]: Abstraction has has 268 places, 208 transitions, 1350 flow [2021-12-17 22:47:49,365 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) [2021-12-17 22:47:49,365 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:49,365 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] [2021-12-17 22:47:49,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-17 22:47:49,366 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:49,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:49,366 INFO L85 PathProgramCache]: Analyzing trace with hash 331665007, now seen corresponding path program 7 times [2021-12-17 22:47:49,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:49,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206889] [2021-12-17 22:47:49,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:49,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:49,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:49,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:49,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206889] [2021-12-17 22:47:49,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206889] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:49,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:49,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:49,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192561081] [2021-12-17 22:47:49,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:49,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:49,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:49,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:49,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:49,447 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:49,448 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 208 transitions, 1350 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) [2021-12-17 22:47:49,448 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:49,448 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:49,448 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:49,647 INFO L129 PetriNetUnfolder]: 126/748 cut-off events. [2021-12-17 22:47:49,647 INFO L130 PetriNetUnfolder]: For 5161/5180 co-relation queries the response was YES. [2021-12-17 22:47:49,651 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3018 conditions, 748 events. 126/748 cut-off events. For 5161/5180 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4172 event pairs, 42 based on Foata normal form. 7/732 useless extension candidates. Maximal degree in co-relation 2945. Up to 185 conditions per place. [2021-12-17 22:47:49,653 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 75 selfloop transitions, 28 changer transitions 24/247 dead transitions. [2021-12-17 22:47:49,653 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 247 transitions, 2176 flow [2021-12-17 22:47:49,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 22:47:49,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-17 22:47:49,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2204 transitions. [2021-12-17 22:47:49,655 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7826704545454546 [2021-12-17 22:47:49,655 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2204 transitions. [2021-12-17 22:47:49,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2204 transitions. [2021-12-17 22:47:49,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:49,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2204 transitions. [2021-12-17 22:47:49,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 137.75) internal successors, (2204), 16 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:49,659 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) [2021-12-17 22:47:49,659 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) [2021-12-17 22:47:49,659 INFO L186 Difference]: Start difference. First operand has 268 places, 208 transitions, 1350 flow. Second operand 16 states and 2204 transitions. [2021-12-17 22:47:49,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 247 transitions, 2176 flow [2021-12-17 22:47:49,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 247 transitions, 2046 flow, removed 56 selfloop flow, removed 12 redundant places. [2021-12-17 22:47:49,681 INFO L242 Difference]: Finished difference. Result has 267 places, 212 transitions, 1428 flow [2021-12-17 22:47:49,681 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1428, PETRI_PLACES=267, PETRI_TRANSITIONS=212} [2021-12-17 22:47:49,682 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 108 predicate places. [2021-12-17 22:47:49,682 INFO L470 AbstractCegarLoop]: Abstraction has has 267 places, 212 transitions, 1428 flow [2021-12-17 22:47:49,683 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) [2021-12-17 22:47:49,683 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:49,683 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] [2021-12-17 22:47:49,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-17 22:47:49,683 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:49,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:49,683 INFO L85 PathProgramCache]: Analyzing trace with hash -2046587005, now seen corresponding path program 8 times [2021-12-17 22:47:49,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:49,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614855321] [2021-12-17 22:47:49,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:49,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:49,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:49,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:49,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614855321] [2021-12-17 22:47:49,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614855321] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:49,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:49,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:49,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496131039] [2021-12-17 22:47:49,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:49,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:49,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:49,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:49,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:49,772 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:49,773 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 212 transitions, 1428 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) [2021-12-17 22:47:49,773 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:49,773 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:49,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:50,053 INFO L129 PetriNetUnfolder]: 126/749 cut-off events. [2021-12-17 22:47:50,053 INFO L130 PetriNetUnfolder]: For 4820/4837 co-relation queries the response was YES. [2021-12-17 22:47:50,057 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2935 conditions, 749 events. 126/749 cut-off events. For 4820/4837 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 4181 event pairs, 42 based on Foata normal form. 5/733 useless extension candidates. Maximal degree in co-relation 2865. Up to 165 conditions per place. [2021-12-17 22:47:50,059 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 87 selfloop transitions, 27 changer transitions 29/263 dead transitions. [2021-12-17 22:47:50,059 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 263 transitions, 2445 flow [2021-12-17 22:47:50,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-17 22:47:50,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-17 22:47:50,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2887 transitions. [2021-12-17 22:47:50,062 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7811147186147186 [2021-12-17 22:47:50,062 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2887 transitions. [2021-12-17 22:47:50,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2887 transitions. [2021-12-17 22:47:50,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:50,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2887 transitions. [2021-12-17 22:47:50,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 137.47619047619048) internal successors, (2887), 21 states have internal predecessors, (2887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:50,067 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) [2021-12-17 22:47:50,067 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) [2021-12-17 22:47:50,067 INFO L186 Difference]: Start difference. First operand has 267 places, 212 transitions, 1428 flow. Second operand 21 states and 2887 transitions. [2021-12-17 22:47:50,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 263 transitions, 2445 flow [2021-12-17 22:47:50,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 263 transitions, 2299 flow, removed 45 selfloop flow, removed 8 redundant places. [2021-12-17 22:47:50,084 INFO L242 Difference]: Finished difference. Result has 288 places, 218 transitions, 1547 flow [2021-12-17 22:47:50,084 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1324, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1547, PETRI_PLACES=288, PETRI_TRANSITIONS=218} [2021-12-17 22:47:50,085 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 129 predicate places. [2021-12-17 22:47:50,085 INFO L470 AbstractCegarLoop]: Abstraction has has 288 places, 218 transitions, 1547 flow [2021-12-17 22:47:50,085 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) [2021-12-17 22:47:50,085 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:50,086 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] [2021-12-17 22:47:50,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-17 22:47:50,086 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:50,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:50,086 INFO L85 PathProgramCache]: Analyzing trace with hash -338180869, now seen corresponding path program 9 times [2021-12-17 22:47:50,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:50,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623150567] [2021-12-17 22:47:50,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:50,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:50,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:50,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:50,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623150567] [2021-12-17 22:47:50,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623150567] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:50,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:50,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:50,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971478089] [2021-12-17 22:47:50,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:50,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:50,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:50,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:50,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:50,163 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:50,164 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 218 transitions, 1547 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) [2021-12-17 22:47:50,164 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:50,164 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:50,164 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:50,404 INFO L129 PetriNetUnfolder]: 122/737 cut-off events. [2021-12-17 22:47:50,404 INFO L130 PetriNetUnfolder]: For 5488/5510 co-relation queries the response was YES. [2021-12-17 22:47:50,409 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2983 conditions, 737 events. 122/737 cut-off events. For 5488/5510 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4101 event pairs, 45 based on Foata normal form. 5/719 useless extension candidates. Maximal degree in co-relation 2903. Up to 180 conditions per place. [2021-12-17 22:47:50,412 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 80 selfloop transitions, 31 changer transitions 30/261 dead transitions. [2021-12-17 22:47:50,413 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 261 transitions, 2511 flow [2021-12-17 22:47:50,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 22:47:50,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-17 22:47:50,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2747 transitions. [2021-12-17 22:47:50,415 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7803977272727273 [2021-12-17 22:47:50,415 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2747 transitions. [2021-12-17 22:47:50,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2747 transitions. [2021-12-17 22:47:50,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:50,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2747 transitions. [2021-12-17 22:47:50,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.35) internal successors, (2747), 20 states have internal predecessors, (2747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:50,419 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) [2021-12-17 22:47:50,419 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) [2021-12-17 22:47:50,420 INFO L186 Difference]: Start difference. First operand has 288 places, 218 transitions, 1547 flow. Second operand 20 states and 2747 transitions. [2021-12-17 22:47:50,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 261 transitions, 2511 flow [2021-12-17 22:47:50,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 261 transitions, 2321 flow, removed 70 selfloop flow, removed 15 redundant places. [2021-12-17 22:47:50,439 INFO L242 Difference]: Finished difference. Result has 292 places, 222 transitions, 1619 flow [2021-12-17 22:47:50,440 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1619, PETRI_PLACES=292, PETRI_TRANSITIONS=222} [2021-12-17 22:47:50,440 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 133 predicate places. [2021-12-17 22:47:50,440 INFO L470 AbstractCegarLoop]: Abstraction has has 292 places, 222 transitions, 1619 flow [2021-12-17 22:47:50,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:50,441 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:50,441 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:47:50,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-17 22:47:50,441 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:50,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:50,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1414141161, now seen corresponding path program 10 times [2021-12-17 22:47:50,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:50,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970993491] [2021-12-17 22:47:50,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:50,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:50,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:50,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:50,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:50,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970993491] [2021-12-17 22:47:50,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970993491] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:50,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:50,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:50,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043465047] [2021-12-17 22:47:50,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:50,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:50,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:50,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:50,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:50,518 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:50,519 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 222 transitions, 1619 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) [2021-12-17 22:47:50,519 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:50,519 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:50,519 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:50,725 INFO L129 PetriNetUnfolder]: 108/684 cut-off events. [2021-12-17 22:47:50,725 INFO L130 PetriNetUnfolder]: For 4192/4213 co-relation queries the response was YES. [2021-12-17 22:47:50,729 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2658 conditions, 684 events. 108/684 cut-off events. For 4192/4213 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3658 event pairs, 39 based on Foata normal form. 10/673 useless extension candidates. Maximal degree in co-relation 2578. Up to 166 conditions per place. [2021-12-17 22:47:50,732 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 77 selfloop transitions, 21 changer transitions 30/248 dead transitions. [2021-12-17 22:47:50,732 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 248 transitions, 2202 flow [2021-12-17 22:47:50,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 22:47:50,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-17 22:47:50,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2467 transitions. [2021-12-17 22:47:50,733 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7787247474747475 [2021-12-17 22:47:50,734 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2467 transitions. [2021-12-17 22:47:50,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2467 transitions. [2021-12-17 22:47:50,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:50,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2467 transitions. [2021-12-17 22:47:50,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.05555555555554) internal successors, (2467), 18 states have internal predecessors, (2467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:50,738 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) [2021-12-17 22:47:50,738 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) [2021-12-17 22:47:50,738 INFO L186 Difference]: Start difference. First operand has 292 places, 222 transitions, 1619 flow. Second operand 18 states and 2467 transitions. [2021-12-17 22:47:50,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 248 transitions, 2202 flow [2021-12-17 22:47:50,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 248 transitions, 2090 flow, removed 29 selfloop flow, removed 13 redundant places. [2021-12-17 22:47:50,756 INFO L242 Difference]: Finished difference. Result has 291 places, 207 transitions, 1367 flow [2021-12-17 22:47:50,756 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1367, PETRI_PLACES=291, PETRI_TRANSITIONS=207} [2021-12-17 22:47:50,756 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 132 predicate places. [2021-12-17 22:47:50,756 INFO L470 AbstractCegarLoop]: Abstraction has has 291 places, 207 transitions, 1367 flow [2021-12-17 22:47:50,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:50,757 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:50,757 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:47:50,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-17 22:47:50,758 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:50,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:50,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1476476881, now seen corresponding path program 11 times [2021-12-17 22:47:50,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:50,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588162955] [2021-12-17 22:47:50,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:50,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:50,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:50,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:50,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588162955] [2021-12-17 22:47:50,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588162955] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:50,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:50,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:50,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902234189] [2021-12-17 22:47:50,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:50,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:50,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:50,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:50,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:50,840 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:50,841 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 207 transitions, 1367 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) [2021-12-17 22:47:50,841 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:50,841 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:50,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:51,077 INFO L129 PetriNetUnfolder]: 102/679 cut-off events. [2021-12-17 22:47:51,077 INFO L130 PetriNetUnfolder]: For 4186/4197 co-relation queries the response was YES. [2021-12-17 22:47:51,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2558 conditions, 679 events. 102/679 cut-off events. For 4186/4197 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3639 event pairs, 41 based on Foata normal form. 2/661 useless extension candidates. Maximal degree in co-relation 2481. Up to 161 conditions per place. [2021-12-17 22:47:51,082 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 71 selfloop transitions, 25 changer transitions 26/242 dead transitions. [2021-12-17 22:47:51,082 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 242 transitions, 2151 flow [2021-12-17 22:47:51,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 22:47:51,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-17 22:47:51,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2477 transitions. [2021-12-17 22:47:51,084 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7818813131313131 [2021-12-17 22:47:51,084 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2477 transitions. [2021-12-17 22:47:51,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2477 transitions. [2021-12-17 22:47:51,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:51,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2477 transitions. [2021-12-17 22:47:51,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.61111111111111) internal successors, (2477), 18 states have internal predecessors, (2477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:51,088 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) [2021-12-17 22:47:51,089 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) [2021-12-17 22:47:51,089 INFO L186 Difference]: Start difference. First operand has 291 places, 207 transitions, 1367 flow. Second operand 18 states and 2477 transitions. [2021-12-17 22:47:51,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 242 transitions, 2151 flow [2021-12-17 22:47:51,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 242 transitions, 1983 flow, removed 35 selfloop flow, removed 17 redundant places. [2021-12-17 22:47:51,109 INFO L242 Difference]: Finished difference. Result has 275 places, 210 transitions, 1417 flow [2021-12-17 22:47:51,109 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1417, PETRI_PLACES=275, PETRI_TRANSITIONS=210} [2021-12-17 22:47:51,110 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 116 predicate places. [2021-12-17 22:47:51,110 INFO L470 AbstractCegarLoop]: Abstraction has has 275 places, 210 transitions, 1417 flow [2021-12-17 22:47:51,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:51,110 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:51,111 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] [2021-12-17 22:47:51,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-17 22:47:51,112 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:51,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:51,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1046926297, now seen corresponding path program 12 times [2021-12-17 22:47:51,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:51,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846426342] [2021-12-17 22:47:51,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:51,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:51,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:51,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:51,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846426342] [2021-12-17 22:47:51,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846426342] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:51,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:51,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:51,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102969721] [2021-12-17 22:47:51,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:51,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:51,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:51,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:51,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:51,205 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:51,206 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 210 transitions, 1417 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) [2021-12-17 22:47:51,206 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:51,206 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:51,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:51,439 INFO L129 PetriNetUnfolder]: 95/656 cut-off events. [2021-12-17 22:47:51,440 INFO L130 PetriNetUnfolder]: For 3215/3226 co-relation queries the response was YES. [2021-12-17 22:47:51,445 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2346 conditions, 656 events. 95/656 cut-off events. For 3215/3226 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3425 event pairs, 42 based on Foata normal form. 2/639 useless extension candidates. Maximal degree in co-relation 2274. Up to 159 conditions per place. [2021-12-17 22:47:51,447 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 69 selfloop transitions, 16 changer transitions 26/231 dead transitions. [2021-12-17 22:47:51,447 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 231 transitions, 1902 flow [2021-12-17 22:47:51,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 22:47:51,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-17 22:47:51,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2336 transitions. [2021-12-17 22:47:51,450 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7807486631016043 [2021-12-17 22:47:51,450 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2336 transitions. [2021-12-17 22:47:51,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2336 transitions. [2021-12-17 22:47:51,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:51,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2336 transitions. [2021-12-17 22:47:51,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.41176470588235) internal successors, (2336), 17 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:51,455 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) [2021-12-17 22:47:51,455 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) [2021-12-17 22:47:51,455 INFO L186 Difference]: Start difference. First operand has 275 places, 210 transitions, 1417 flow. Second operand 17 states and 2336 transitions. [2021-12-17 22:47:51,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 231 transitions, 1902 flow [2021-12-17 22:47:51,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 231 transitions, 1773 flow, removed 39 selfloop flow, removed 8 redundant places. [2021-12-17 22:47:51,473 INFO L242 Difference]: Finished difference. Result has 281 places, 201 transitions, 1218 flow [2021-12-17 22:47:51,473 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1315, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1218, PETRI_PLACES=281, PETRI_TRANSITIONS=201} [2021-12-17 22:47:51,474 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 122 predicate places. [2021-12-17 22:47:51,474 INFO L470 AbstractCegarLoop]: Abstraction has has 281 places, 201 transitions, 1218 flow [2021-12-17 22:47:51,474 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) [2021-12-17 22:47:51,474 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:51,475 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] [2021-12-17 22:47:51,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-17 22:47:51,475 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:51,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:51,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1867275035, now seen corresponding path program 13 times [2021-12-17 22:47:51,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:51,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968356427] [2021-12-17 22:47:51,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:51,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:51,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:51,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:51,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968356427] [2021-12-17 22:47:51,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968356427] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:51,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:51,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:51,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504955590] [2021-12-17 22:47:51,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:51,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:51,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:51,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:51,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:51,575 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:51,575 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 201 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) [2021-12-17 22:47:51,575 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:51,576 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:51,576 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:51,825 INFO L129 PetriNetUnfolder]: 81/596 cut-off events. [2021-12-17 22:47:51,825 INFO L130 PetriNetUnfolder]: For 2489/2506 co-relation queries the response was YES. [2021-12-17 22:47:51,829 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1991 conditions, 596 events. 81/596 cut-off events. For 2489/2506 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2919 event pairs, 38 based on Foata normal form. 4/581 useless extension candidates. Maximal degree in co-relation 1918. Up to 149 conditions per place. [2021-12-17 22:47:51,830 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 59 selfloop transitions, 5 changer transitions 29/213 dead transitions. [2021-12-17 22:47:51,830 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 213 transitions, 1517 flow [2021-12-17 22:47:51,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 22:47:51,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-17 22:47:51,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2461 transitions. [2021-12-17 22:47:51,833 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7768308080808081 [2021-12-17 22:47:51,833 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2461 transitions. [2021-12-17 22:47:51,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2461 transitions. [2021-12-17 22:47:51,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:51,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2461 transitions. [2021-12-17 22:47:51,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.72222222222223) internal successors, (2461), 18 states have internal predecessors, (2461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:51,837 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) [2021-12-17 22:47:51,837 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) [2021-12-17 22:47:51,837 INFO L186 Difference]: Start difference. First operand has 281 places, 201 transitions, 1218 flow. Second operand 18 states and 2461 transitions. [2021-12-17 22:47:51,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 213 transitions, 1517 flow [2021-12-17 22:47:51,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 213 transitions, 1430 flow, removed 17 selfloop flow, removed 18 redundant places. [2021-12-17 22:47:51,849 INFO L242 Difference]: Finished difference. Result has 269 places, 181 transitions, 886 flow [2021-12-17 22:47:51,849 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=886, PETRI_PLACES=269, PETRI_TRANSITIONS=181} [2021-12-17 22:47:51,849 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 110 predicate places. [2021-12-17 22:47:51,850 INFO L470 AbstractCegarLoop]: Abstraction has has 269 places, 181 transitions, 886 flow [2021-12-17 22:47:51,850 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) [2021-12-17 22:47:51,850 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:51,850 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] [2021-12-17 22:47:51,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-17 22:47:51,850 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:51,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:51,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1554794481, now seen corresponding path program 14 times [2021-12-17 22:47:51,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:51,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822012722] [2021-12-17 22:47:51,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:51,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:51,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:51,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:51,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:51,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822012722] [2021-12-17 22:47:51,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822012722] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:51,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:51,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:51,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130465934] [2021-12-17 22:47:51,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:51,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:51,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:51,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:51,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:51,933 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:51,934 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 181 transitions, 886 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) [2021-12-17 22:47:51,934 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:51,934 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:51,934 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:52,170 INFO L129 PetriNetUnfolder]: 86/618 cut-off events. [2021-12-17 22:47:52,170 INFO L130 PetriNetUnfolder]: For 2392/2397 co-relation queries the response was YES. [2021-12-17 22:47:52,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2043 conditions, 618 events. 86/618 cut-off events. For 2392/2397 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3132 event pairs, 37 based on Foata normal form. 1/599 useless extension candidates. Maximal degree in co-relation 1976. Up to 130 conditions per place. [2021-12-17 22:47:52,175 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 54 selfloop transitions, 22 changer transitions 30/226 dead transitions. [2021-12-17 22:47:52,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 226 transitions, 1642 flow [2021-12-17 22:47:52,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-17 22:47:52,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-17 22:47:52,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3011 transitions. [2021-12-17 22:47:52,178 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7776342975206612 [2021-12-17 22:47:52,178 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3011 transitions. [2021-12-17 22:47:52,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3011 transitions. [2021-12-17 22:47:52,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:52,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3011 transitions. [2021-12-17 22:47:52,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 136.86363636363637) internal successors, (3011), 22 states have internal predecessors, (3011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:52,183 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) [2021-12-17 22:47:52,183 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) [2021-12-17 22:47:52,183 INFO L186 Difference]: Start difference. First operand has 269 places, 181 transitions, 886 flow. Second operand 22 states and 3011 transitions. [2021-12-17 22:47:52,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 226 transitions, 1642 flow [2021-12-17 22:47:52,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 226 transitions, 1486 flow, removed 39 selfloop flow, removed 19 redundant places. [2021-12-17 22:47:52,194 INFO L242 Difference]: Finished difference. Result has 257 places, 186 transitions, 958 flow [2021-12-17 22:47:52,194 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=958, PETRI_PLACES=257, PETRI_TRANSITIONS=186} [2021-12-17 22:47:52,196 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 98 predicate places. [2021-12-17 22:47:52,196 INFO L470 AbstractCegarLoop]: Abstraction has has 257 places, 186 transitions, 958 flow [2021-12-17 22:47:52,197 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) [2021-12-17 22:47:52,197 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:52,197 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] [2021-12-17 22:47:52,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-17 22:47:52,197 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:52,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:52,198 INFO L85 PathProgramCache]: Analyzing trace with hash 16158457, now seen corresponding path program 15 times [2021-12-17 22:47:52,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:52,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161755928] [2021-12-17 22:47:52,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:52,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:52,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:52,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:52,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161755928] [2021-12-17 22:47:52,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161755928] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:52,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:52,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:52,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317109714] [2021-12-17 22:47:52,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:52,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:52,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:52,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:52,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:52,306 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:52,307 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 186 transitions, 958 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) [2021-12-17 22:47:52,307 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:52,307 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:52,307 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:52,530 INFO L129 PetriNetUnfolder]: 88/627 cut-off events. [2021-12-17 22:47:52,530 INFO L130 PetriNetUnfolder]: For 2595/2600 co-relation queries the response was YES. [2021-12-17 22:47:52,533 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2126 conditions, 627 events. 88/627 cut-off events. For 2595/2600 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3197 event pairs, 36 based on Foata normal form. 1/608 useless extension candidates. Maximal degree in co-relation 2060. Up to 141 conditions per place. [2021-12-17 22:47:52,535 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 55 selfloop transitions, 27 changer transitions 23/225 dead transitions. [2021-12-17 22:47:52,535 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 225 transitions, 1672 flow [2021-12-17 22:47:52,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 22:47:52,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-17 22:47:52,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2336 transitions. [2021-12-17 22:47:52,537 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7807486631016043 [2021-12-17 22:47:52,537 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2336 transitions. [2021-12-17 22:47:52,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2336 transitions. [2021-12-17 22:47:52,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:52,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2336 transitions. [2021-12-17 22:47:52,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.41176470588235) internal successors, (2336), 17 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:52,540 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) [2021-12-17 22:47:52,541 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) [2021-12-17 22:47:52,541 INFO L186 Difference]: Start difference. First operand has 257 places, 186 transitions, 958 flow. Second operand 17 states and 2336 transitions. [2021-12-17 22:47:52,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 225 transitions, 1672 flow [2021-12-17 22:47:52,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 225 transitions, 1586 flow, removed 30 selfloop flow, removed 13 redundant places. [2021-12-17 22:47:52,550 INFO L242 Difference]: Finished difference. Result has 256 places, 194 transitions, 1130 flow [2021-12-17 22:47:52,550 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1130, PETRI_PLACES=256, PETRI_TRANSITIONS=194} [2021-12-17 22:47:52,551 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 97 predicate places. [2021-12-17 22:47:52,551 INFO L470 AbstractCegarLoop]: Abstraction has has 256 places, 194 transitions, 1130 flow [2021-12-17 22:47:52,551 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) [2021-12-17 22:47:52,551 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:52,551 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] [2021-12-17 22:47:52,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-17 22:47:52,552 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:52,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:52,552 INFO L85 PathProgramCache]: Analyzing trace with hash 302309025, now seen corresponding path program 16 times [2021-12-17 22:47:52,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:52,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97105906] [2021-12-17 22:47:52,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:52,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:52,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:52,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:52,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97105906] [2021-12-17 22:47:52,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97105906] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:52,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:52,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:52,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265896332] [2021-12-17 22:47:52,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:52,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:52,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:52,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:52,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:52,655 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:52,655 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 194 transitions, 1130 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) [2021-12-17 22:47:52,655 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:52,656 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:52,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:52,858 INFO L129 PetriNetUnfolder]: 76/577 cut-off events. [2021-12-17 22:47:52,858 INFO L130 PetriNetUnfolder]: For 2159/2164 co-relation queries the response was YES. [2021-12-17 22:47:52,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1921 conditions, 577 events. 76/577 cut-off events. For 2159/2164 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2775 event pairs, 35 based on Foata normal form. 1/559 useless extension candidates. Maximal degree in co-relation 1856. Up to 132 conditions per place. [2021-12-17 22:47:52,865 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 52 selfloop transitions, 13 changer transitions 29/214 dead transitions. [2021-12-17 22:47:52,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 214 transitions, 1530 flow [2021-12-17 22:47:52,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 22:47:52,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-17 22:47:52,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2465 transitions. [2021-12-17 22:47:52,867 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7780934343434344 [2021-12-17 22:47:52,868 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2465 transitions. [2021-12-17 22:47:52,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2465 transitions. [2021-12-17 22:47:52,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:52,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2465 transitions. [2021-12-17 22:47:52,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.94444444444446) internal successors, (2465), 18 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:52,872 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) [2021-12-17 22:47:52,872 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) [2021-12-17 22:47:52,872 INFO L186 Difference]: Start difference. First operand has 256 places, 194 transitions, 1130 flow. Second operand 18 states and 2465 transitions. [2021-12-17 22:47:52,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 214 transitions, 1530 flow [2021-12-17 22:47:52,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 214 transitions, 1420 flow, removed 33 selfloop flow, removed 9 redundant places. [2021-12-17 22:47:52,882 INFO L242 Difference]: Finished difference. Result has 263 places, 179 transitions, 868 flow [2021-12-17 22:47:52,882 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1039, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=868, PETRI_PLACES=263, PETRI_TRANSITIONS=179} [2021-12-17 22:47:52,883 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 104 predicate places. [2021-12-17 22:47:52,883 INFO L470 AbstractCegarLoop]: Abstraction has has 263 places, 179 transitions, 868 flow [2021-12-17 22:47:52,884 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) [2021-12-17 22:47:52,884 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:52,884 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] [2021-12-17 22:47:52,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-17 22:47:52,884 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:52,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:52,885 INFO L85 PathProgramCache]: Analyzing trace with hash 993590487, now seen corresponding path program 17 times [2021-12-17 22:47:52,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:52,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861624869] [2021-12-17 22:47:52,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:52,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:52,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:52,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:52,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861624869] [2021-12-17 22:47:52,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861624869] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:52,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:52,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:52,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432116764] [2021-12-17 22:47:52,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:52,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:52,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:52,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:52,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:52,979 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:52,979 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 179 transitions, 868 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) [2021-12-17 22:47:52,980 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:52,980 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:52,980 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:53,198 INFO L129 PetriNetUnfolder]: 75/574 cut-off events. [2021-12-17 22:47:53,200 INFO L130 PetriNetUnfolder]: For 2278/2283 co-relation queries the response was YES. [2021-12-17 22:47:53,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1893 conditions, 574 events. 75/574 cut-off events. For 2278/2283 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2770 event pairs, 35 based on Foata normal form. 1/555 useless extension candidates. Maximal degree in co-relation 1827. Up to 120 conditions per place. [2021-12-17 22:47:53,204 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 48 selfloop transitions, 19 changer transitions 30/217 dead transitions. [2021-12-17 22:47:53,204 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 217 transitions, 1606 flow [2021-12-17 22:47:53,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-17 22:47:53,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-17 22:47:53,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2875 transitions. [2021-12-17 22:47:53,207 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7778679653679653 [2021-12-17 22:47:53,207 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2875 transitions. [2021-12-17 22:47:53,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2875 transitions. [2021-12-17 22:47:53,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:53,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2875 transitions. [2021-12-17 22:47:53,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 136.9047619047619) internal successors, (2875), 21 states have internal predecessors, (2875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:53,216 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) [2021-12-17 22:47:53,216 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) [2021-12-17 22:47:53,216 INFO L186 Difference]: Start difference. First operand has 263 places, 179 transitions, 868 flow. Second operand 21 states and 2875 transitions. [2021-12-17 22:47:53,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 217 transitions, 1606 flow [2021-12-17 22:47:53,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 217 transitions, 1418 flow, removed 50 selfloop flow, removed 19 redundant places. [2021-12-17 22:47:53,225 INFO L242 Difference]: Finished difference. Result has 254 places, 182 transitions, 915 flow [2021-12-17 22:47:53,225 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=915, PETRI_PLACES=254, PETRI_TRANSITIONS=182} [2021-12-17 22:47:53,226 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 95 predicate places. [2021-12-17 22:47:53,226 INFO L470 AbstractCegarLoop]: Abstraction has has 254 places, 182 transitions, 915 flow [2021-12-17 22:47:53,226 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) [2021-12-17 22:47:53,226 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:53,226 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] [2021-12-17 22:47:53,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-17 22:47:53,226 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:53,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:53,227 INFO L85 PathProgramCache]: Analyzing trace with hash 728617745, now seen corresponding path program 18 times [2021-12-17 22:47:53,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:53,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198789844] [2021-12-17 22:47:53,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:53,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:53,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:53,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:53,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198789844] [2021-12-17 22:47:53,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198789844] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:53,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:53,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:53,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858152181] [2021-12-17 22:47:53,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:53,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:53,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:53,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:53,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:53,310 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:53,311 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 182 transitions, 915 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) [2021-12-17 22:47:53,311 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:53,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:53,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:53,531 INFO L129 PetriNetUnfolder]: 68/552 cut-off events. [2021-12-17 22:47:53,531 INFO L130 PetriNetUnfolder]: For 1790/1795 co-relation queries the response was YES. [2021-12-17 22:47:53,534 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1749 conditions, 552 events. 68/552 cut-off events. For 1790/1795 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2605 event pairs, 36 based on Foata normal form. 1/534 useless extension candidates. Maximal degree in co-relation 1684. Up to 126 conditions per place. [2021-12-17 22:47:53,535 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 44 selfloop transitions, 21 changer transitions 26/211 dead transitions. [2021-12-17 22:47:53,535 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 211 transitions, 1485 flow [2021-12-17 22:47:53,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 22:47:53,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-17 22:47:53,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2470 transitions. [2021-12-17 22:47:53,537 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7796717171717171 [2021-12-17 22:47:53,537 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2470 transitions. [2021-12-17 22:47:53,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2470 transitions. [2021-12-17 22:47:53,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:53,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2470 transitions. [2021-12-17 22:47:53,540 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) [2021-12-17 22:47:53,542 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) [2021-12-17 22:47:53,542 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) [2021-12-17 22:47:53,542 INFO L186 Difference]: Start difference. First operand has 254 places, 182 transitions, 915 flow. Second operand 18 states and 2470 transitions. [2021-12-17 22:47:53,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 211 transitions, 1485 flow [2021-12-17 22:47:53,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 211 transitions, 1362 flow, removed 43 selfloop flow, removed 15 redundant places. [2021-12-17 22:47:53,572 INFO L242 Difference]: Finished difference. Result has 248 places, 183 transitions, 936 flow [2021-12-17 22:47:53,572 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=851, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=936, PETRI_PLACES=248, PETRI_TRANSITIONS=183} [2021-12-17 22:47:53,573 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 89 predicate places. [2021-12-17 22:47:53,573 INFO L470 AbstractCegarLoop]: Abstraction has has 248 places, 183 transitions, 936 flow [2021-12-17 22:47:53,573 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) [2021-12-17 22:47:53,573 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:53,574 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] [2021-12-17 22:47:53,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-17 22:47:53,574 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:53,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:53,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1082336479, now seen corresponding path program 19 times [2021-12-17 22:47:53,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:53,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364264675] [2021-12-17 22:47:53,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:53,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:53,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:53,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:53,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364264675] [2021-12-17 22:47:53,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364264675] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:53,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:53,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:53,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766066156] [2021-12-17 22:47:53,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:53,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:53,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:53,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:53,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:53,652 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:53,652 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 183 transitions, 936 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) [2021-12-17 22:47:53,652 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:53,652 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:53,653 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:53,815 INFO L129 PetriNetUnfolder]: 65/538 cut-off events. [2021-12-17 22:47:53,815 INFO L130 PetriNetUnfolder]: For 1411/1416 co-relation queries the response was YES. [2021-12-17 22:47:53,818 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1595 conditions, 538 events. 65/538 cut-off events. For 1411/1416 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2503 event pairs, 33 based on Foata normal form. 1/518 useless extension candidates. Maximal degree in co-relation 1536. Up to 124 conditions per place. [2021-12-17 22:47:53,820 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 43 selfloop transitions, 12 changer transitions 29/204 dead transitions. [2021-12-17 22:47:53,820 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 204 transitions, 1291 flow [2021-12-17 22:47:53,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 22:47:53,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-17 22:47:53,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2333 transitions. [2021-12-17 22:47:53,841 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7797459893048129 [2021-12-17 22:47:53,841 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2333 transitions. [2021-12-17 22:47:53,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2333 transitions. [2021-12-17 22:47:53,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:53,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2333 transitions. [2021-12-17 22:47:53,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.23529411764707) internal successors, (2333), 17 states have internal predecessors, (2333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:53,845 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) [2021-12-17 22:47:53,845 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) [2021-12-17 22:47:53,845 INFO L186 Difference]: Start difference. First operand has 248 places, 183 transitions, 936 flow. Second operand 17 states and 2333 transitions. [2021-12-17 22:47:53,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 204 transitions, 1291 flow [2021-12-17 22:47:53,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 204 transitions, 1155 flow, removed 35 selfloop flow, removed 12 redundant places. [2021-12-17 22:47:53,853 INFO L242 Difference]: Finished difference. Result has 250 places, 174 transitions, 750 flow [2021-12-17 22:47:53,853 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=750, PETRI_PLACES=250, PETRI_TRANSITIONS=174} [2021-12-17 22:47:53,854 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 91 predicate places. [2021-12-17 22:47:53,854 INFO L470 AbstractCegarLoop]: Abstraction has has 250 places, 174 transitions, 750 flow [2021-12-17 22:47:53,855 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) [2021-12-17 22:47:53,855 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:53,855 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] [2021-12-17 22:47:53,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-17 22:47:53,855 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:53,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:53,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1363291067, now seen corresponding path program 20 times [2021-12-17 22:47:53,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:53,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59184049] [2021-12-17 22:47:53,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:53,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:53,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:53,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:53,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59184049] [2021-12-17 22:47:53,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59184049] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:53,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:53,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:53,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932131660] [2021-12-17 22:47:53,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:53,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:53,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:53,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:53,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:53,936 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-12-17 22:47:53,936 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 174 transitions, 750 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) [2021-12-17 22:47:53,937 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:53,937 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-12-17 22:47:53,937 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:54,107 INFO L129 PetriNetUnfolder]: 51/452 cut-off events. [2021-12-17 22:47:54,108 INFO L130 PetriNetUnfolder]: For 853/858 co-relation queries the response was YES. [2021-12-17 22:47:54,110 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1222 conditions, 452 events. 51/452 cut-off events. For 853/858 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1899 event pairs, 32 based on Foata normal form. 1/435 useless extension candidates. Maximal degree in co-relation 1164. Up to 102 conditions per place. [2021-12-17 22:47:54,111 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 29 selfloop transitions, 0 changer transitions 41/184 dead transitions. [2021-12-17 22:47:54,111 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 184 transitions, 929 flow [2021-12-17 22:47:54,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 22:47:54,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-17 22:47:54,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2457 transitions. [2021-12-17 22:47:54,125 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7755681818181818 [2021-12-17 22:47:54,125 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2457 transitions. [2021-12-17 22:47:54,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2457 transitions. [2021-12-17 22:47:54,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:54,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2457 transitions. [2021-12-17 22:47:54,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.5) internal successors, (2457), 18 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:54,129 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) [2021-12-17 22:47:54,129 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) [2021-12-17 22:47:54,129 INFO L186 Difference]: Start difference. First operand has 250 places, 174 transitions, 750 flow. Second operand 18 states and 2457 transitions. [2021-12-17 22:47:54,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 184 transitions, 929 flow [2021-12-17 22:47:54,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 184 transitions, 847 flow, removed 16 selfloop flow, removed 18 redundant places. [2021-12-17 22:47:54,134 INFO L242 Difference]: Finished difference. Result has 236 places, 143 transitions, 404 flow [2021-12-17 22:47:54,135 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=404, PETRI_PLACES=236, PETRI_TRANSITIONS=143} [2021-12-17 22:47:54,136 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 77 predicate places. [2021-12-17 22:47:54,136 INFO L470 AbstractCegarLoop]: Abstraction has has 236 places, 143 transitions, 404 flow [2021-12-17 22:47:54,136 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) [2021-12-17 22:47:54,137 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:54,137 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] [2021-12-17 22:47:54,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-12-17 22:47:54,137 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:54,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:54,137 INFO L85 PathProgramCache]: Analyzing trace with hash -962557349, now seen corresponding path program 1 times [2021-12-17 22:47:54,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:54,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628162285] [2021-12-17 22:47:54,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:54,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:54,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:54,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:54,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628162285] [2021-12-17 22:47:54,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628162285] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:54,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:54,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-17 22:47:54,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706414963] [2021-12-17 22:47:54,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:54,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-17 22:47:54,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:54,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-17 22:47:54,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-12-17 22:47:54,597 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-17 22:47:54,598 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 143 transitions, 404 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) [2021-12-17 22:47:54,599 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:54,599 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-17 22:47:54,599 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:56,856 INFO L129 PetriNetUnfolder]: 387/1442 cut-off events. [2021-12-17 22:47:56,856 INFO L130 PetriNetUnfolder]: For 2095/2097 co-relation queries the response was YES. [2021-12-17 22:47:56,862 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3463 conditions, 1442 events. 387/1442 cut-off events. For 2095/2097 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 8484 event pairs, 51 based on Foata normal form. 1/1416 useless extension candidates. Maximal degree in co-relation 3413. Up to 141 conditions per place. [2021-12-17 22:47:56,865 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 184 selfloop transitions, 35 changer transitions 39/345 dead transitions. [2021-12-17 22:47:56,865 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 345 transitions, 1958 flow [2021-12-17 22:47:56,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-12-17 22:47:56,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-12-17 22:47:56,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 4208 transitions. [2021-12-17 22:47:56,869 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6461916461916462 [2021-12-17 22:47:56,869 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 4208 transitions. [2021-12-17 22:47:56,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 4208 transitions. [2021-12-17 22:47:56,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:56,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 4208 transitions. [2021-12-17 22:47:56,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 113.72972972972973) internal successors, (4208), 37 states have internal predecessors, (4208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:56,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 176.0) internal successors, (6688), 38 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:56,877 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 176.0) internal successors, (6688), 38 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:56,877 INFO L186 Difference]: Start difference. First operand has 236 places, 143 transitions, 404 flow. Second operand 37 states and 4208 transitions. [2021-12-17 22:47:56,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 345 transitions, 1958 flow [2021-12-17 22:47:56,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 345 transitions, 1754 flow, removed 101 selfloop flow, removed 12 redundant places. [2021-12-17 22:47:56,886 INFO L242 Difference]: Finished difference. Result has 247 places, 170 transitions, 743 flow [2021-12-17 22:47:56,886 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=743, PETRI_PLACES=247, PETRI_TRANSITIONS=170} [2021-12-17 22:47:56,886 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 88 predicate places. [2021-12-17 22:47:56,886 INFO L470 AbstractCegarLoop]: Abstraction has has 247 places, 170 transitions, 743 flow [2021-12-17 22:47:56,887 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) [2021-12-17 22:47:56,887 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:56,887 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] [2021-12-17 22:47:56,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-12-17 22:47:56,887 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:56,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:56,888 INFO L85 PathProgramCache]: Analyzing trace with hash -967268181, now seen corresponding path program 2 times [2021-12-17 22:47:56,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:56,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886480370] [2021-12-17 22:47:56,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:56,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:57,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:57,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:57,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886480370] [2021-12-17 22:47:57,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886480370] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:57,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:57,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-17 22:47:57,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725779190] [2021-12-17 22:47:57,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:57,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-17 22:47:57,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:57,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-17 22:47:57,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-12-17 22:47:57,435 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-17 22:47:57,436 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 170 transitions, 743 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) [2021-12-17 22:47:57,436 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:57,436 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-17 22:47:57,436 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:59,710 INFO L129 PetriNetUnfolder]: 653/2279 cut-off events. [2021-12-17 22:47:59,711 INFO L130 PetriNetUnfolder]: For 8677/8679 co-relation queries the response was YES. [2021-12-17 22:47:59,726 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6849 conditions, 2279 events. 653/2279 cut-off events. For 8677/8679 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 15905 event pairs, 55 based on Foata normal form. 1/2219 useless extension candidates. Maximal degree in co-relation 6781. Up to 595 conditions per place. [2021-12-17 22:47:59,732 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 228 selfloop transitions, 46 changer transitions 39/400 dead transitions. [2021-12-17 22:47:59,732 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 400 transitions, 2920 flow [2021-12-17 22:47:59,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-17 22:47:59,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-12-17 22:47:59,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4024 transitions. [2021-12-17 22:47:59,754 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6532467532467533 [2021-12-17 22:47:59,754 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4024 transitions. [2021-12-17 22:47:59,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4024 transitions. [2021-12-17 22:47:59,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:59,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4024 transitions. [2021-12-17 22:47:59,757 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) [2021-12-17 22:47:59,760 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) [2021-12-17 22:47:59,761 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) [2021-12-17 22:47:59,761 INFO L186 Difference]: Start difference. First operand has 247 places, 170 transitions, 743 flow. Second operand 35 states and 4024 transitions. [2021-12-17 22:47:59,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 400 transitions, 2920 flow [2021-12-17 22:47:59,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 400 transitions, 2481 flow, removed 181 selfloop flow, removed 20 redundant places. [2021-12-17 22:47:59,779 INFO L242 Difference]: Finished difference. Result has 276 places, 201 transitions, 1221 flow [2021-12-17 22:47:59,779 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1221, PETRI_PLACES=276, PETRI_TRANSITIONS=201} [2021-12-17 22:47:59,779 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 117 predicate places. [2021-12-17 22:47:59,780 INFO L470 AbstractCegarLoop]: Abstraction has has 276 places, 201 transitions, 1221 flow [2021-12-17 22:47:59,780 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) [2021-12-17 22:47:59,780 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:59,780 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] [2021-12-17 22:47:59,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-12-17 22:47:59,781 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:59,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:59,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1107571809, now seen corresponding path program 3 times [2021-12-17 22:47:59,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:59,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480649223] [2021-12-17 22:47:59,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:59,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:00,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:48:00,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:00,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480649223] [2021-12-17 22:48:00,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480649223] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:00,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:00,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-17 22:48:00,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357782413] [2021-12-17 22:48:00,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:00,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-17 22:48:00,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:00,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-17 22:48:00,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-12-17 22:48:00,281 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-17 22:48:00,287 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 201 transitions, 1221 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) [2021-12-17 22:48:00,287 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:00,288 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-17 22:48:00,288 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:04,435 INFO L129 PetriNetUnfolder]: 696/2421 cut-off events. [2021-12-17 22:48:04,435 INFO L130 PetriNetUnfolder]: For 10051/10053 co-relation queries the response was YES. [2021-12-17 22:48:04,449 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8023 conditions, 2421 events. 696/2421 cut-off events. For 10051/10053 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 17299 event pairs, 42 based on Foata normal form. 1/2385 useless extension candidates. Maximal degree in co-relation 7938. Up to 210 conditions per place. [2021-12-17 22:48:04,456 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 372 selfloop transitions, 34 changer transitions 124/617 dead transitions. [2021-12-17 22:48:04,456 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 617 transitions, 5612 flow [2021-12-17 22:48:04,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-12-17 22:48:04,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-12-17 22:48:04,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 7313 transitions. [2021-12-17 22:48:04,472 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6392482517482517 [2021-12-17 22:48:04,472 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 7313 transitions. [2021-12-17 22:48:04,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 7313 transitions. [2021-12-17 22:48:04,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:04,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 7313 transitions. [2021-12-17 22:48:04,478 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) [2021-12-17 22:48:04,484 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) [2021-12-17 22:48:04,484 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) [2021-12-17 22:48:04,485 INFO L186 Difference]: Start difference. First operand has 276 places, 201 transitions, 1221 flow. Second operand 65 states and 7313 transitions. [2021-12-17 22:48:04,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 617 transitions, 5612 flow [2021-12-17 22:48:04,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 617 transitions, 4962 flow, removed 324 selfloop flow, removed 15 redundant places. [2021-12-17 22:48:04,516 INFO L242 Difference]: Finished difference. Result has 363 places, 201 transitions, 1135 flow [2021-12-17 22:48:04,516 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=925, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=1135, PETRI_PLACES=363, PETRI_TRANSITIONS=201} [2021-12-17 22:48:04,516 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 204 predicate places. [2021-12-17 22:48:04,516 INFO L470 AbstractCegarLoop]: Abstraction has has 363 places, 201 transitions, 1135 flow [2021-12-17 22:48:04,517 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) [2021-12-17 22:48:04,517 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:04,517 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] [2021-12-17 22:48:04,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-12-17 22:48:04,517 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:48:04,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:04,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1131293283, now seen corresponding path program 4 times [2021-12-17 22:48:04,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:04,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153218527] [2021-12-17 22:48:04,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:04,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:04,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:48:04,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:04,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153218527] [2021-12-17 22:48:04,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153218527] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:04,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:04,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-17 22:48:04,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962796381] [2021-12-17 22:48:04,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:04,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-17 22:48:04,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:04,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-17 22:48:04,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-12-17 22:48:04,946 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-17 22:48:04,947 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 201 transitions, 1135 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) [2021-12-17 22:48:04,947 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:04,947 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-17 22:48:04,947 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:07,774 INFO L129 PetriNetUnfolder]: 725/2509 cut-off events. [2021-12-17 22:48:07,774 INFO L130 PetriNetUnfolder]: For 15777/15779 co-relation queries the response was YES. [2021-12-17 22:48:07,792 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9435 conditions, 2509 events. 725/2509 cut-off events. For 15777/15779 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 17945 event pairs, 67 based on Foata normal form. 1/2444 useless extension candidates. Maximal degree in co-relation 9311. Up to 595 conditions per place. [2021-12-17 22:48:07,802 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 268 selfloop transitions, 40 changer transitions 39/434 dead transitions. [2021-12-17 22:48:07,802 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 434 transitions, 3856 flow [2021-12-17 22:48:07,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-17 22:48:07,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-12-17 22:48:07,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4037 transitions. [2021-12-17 22:48:07,805 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6553571428571429 [2021-12-17 22:48:07,805 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4037 transitions. [2021-12-17 22:48:07,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4037 transitions. [2021-12-17 22:48:07,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:07,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4037 transitions. [2021-12-17 22:48:07,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.34285714285714) internal successors, (4037), 35 states have internal predecessors, (4037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:07,811 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) [2021-12-17 22:48:07,811 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) [2021-12-17 22:48:07,812 INFO L186 Difference]: Start difference. First operand has 363 places, 201 transitions, 1135 flow. Second operand 35 states and 4037 transitions. [2021-12-17 22:48:07,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 434 transitions, 3856 flow [2021-12-17 22:48:07,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 434 transitions, 3344 flow, removed 126 selfloop flow, removed 60 redundant places. [2021-12-17 22:48:07,846 INFO L242 Difference]: Finished difference. Result has 309 places, 223 transitions, 1523 flow [2021-12-17 22:48:07,846 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1523, PETRI_PLACES=309, PETRI_TRANSITIONS=223} [2021-12-17 22:48:07,847 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 150 predicate places. [2021-12-17 22:48:07,847 INFO L470 AbstractCegarLoop]: Abstraction has has 309 places, 223 transitions, 1523 flow [2021-12-17 22:48:07,847 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) [2021-12-17 22:48:07,847 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:07,848 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] [2021-12-17 22:48:07,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-12-17 22:48:07,848 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:48:07,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:07,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1657603983, now seen corresponding path program 5 times [2021-12-17 22:48:07,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:07,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237958175] [2021-12-17 22:48:07,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:07,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:07,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:08,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:48:08,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:08,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237958175] [2021-12-17 22:48:08,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237958175] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:08,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:08,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-17 22:48:08,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827814580] [2021-12-17 22:48:08,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:08,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-17 22:48:08,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:08,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-17 22:48:08,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-12-17 22:48:08,256 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-17 22:48:08,257 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 223 transitions, 1523 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) [2021-12-17 22:48:08,257 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:08,257 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-17 22:48:08,258 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:12,214 INFO L129 PetriNetUnfolder]: 895/3049 cut-off events. [2021-12-17 22:48:12,214 INFO L130 PetriNetUnfolder]: For 20551/20556 co-relation queries the response was YES. [2021-12-17 22:48:12,236 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11933 conditions, 3049 events. 895/3049 cut-off events. For 20551/20556 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 23156 event pairs, 133 based on Foata normal form. 3/2993 useless extension candidates. Maximal degree in co-relation 11834. Up to 574 conditions per place. [2021-12-17 22:48:12,244 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 359 selfloop transitions, 27 changer transitions 112/585 dead transitions. [2021-12-17 22:48:12,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 585 transitions, 5916 flow [2021-12-17 22:48:12,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-12-17 22:48:12,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-12-17 22:48:12,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 7005 transitions. [2021-12-17 22:48:12,249 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6419538123167156 [2021-12-17 22:48:12,249 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 7005 transitions. [2021-12-17 22:48:12,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 7005 transitions. [2021-12-17 22:48:12,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:12,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 7005 transitions. [2021-12-17 22:48:12,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 112.98387096774194) internal successors, (7005), 62 states have internal predecessors, (7005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:12,260 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) [2021-12-17 22:48:12,261 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) [2021-12-17 22:48:12,261 INFO L186 Difference]: Start difference. First operand has 309 places, 223 transitions, 1523 flow. Second operand 62 states and 7005 transitions. [2021-12-17 22:48:12,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 585 transitions, 5916 flow [2021-12-17 22:48:12,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 585 transitions, 5290 flow, removed 205 selfloop flow, removed 20 redundant places. [2021-12-17 22:48:12,326 INFO L242 Difference]: Finished difference. Result has 390 places, 232 transitions, 1576 flow [2021-12-17 22:48:12,327 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1234, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=1576, PETRI_PLACES=390, PETRI_TRANSITIONS=232} [2021-12-17 22:48:12,327 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 231 predicate places. [2021-12-17 22:48:12,327 INFO L470 AbstractCegarLoop]: Abstraction has has 390 places, 232 transitions, 1576 flow [2021-12-17 22:48:12,328 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) [2021-12-17 22:48:12,328 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:12,328 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] [2021-12-17 22:48:12,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-12-17 22:48:12,328 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:48:12,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:12,329 INFO L85 PathProgramCache]: Analyzing trace with hash 556540895, now seen corresponding path program 6 times [2021-12-17 22:48:12,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:12,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437645596] [2021-12-17 22:48:12,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:12,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:12,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:48:12,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:12,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437645596] [2021-12-17 22:48:12,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437645596] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:12,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:12,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-17 22:48:12,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514217495] [2021-12-17 22:48:12,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:12,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-17 22:48:12,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:12,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-17 22:48:12,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-12-17 22:48:12,728 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-17 22:48:12,729 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 232 transitions, 1576 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) [2021-12-17 22:48:12,729 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:12,729 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-17 22:48:12,729 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:14,872 INFO L129 PetriNetUnfolder]: 887/3187 cut-off events. [2021-12-17 22:48:14,872 INFO L130 PetriNetUnfolder]: For 42243/42250 co-relation queries the response was YES. [2021-12-17 22:48:14,905 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14196 conditions, 3187 events. 887/3187 cut-off events. For 42243/42250 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 24743 event pairs, 119 based on Foata normal form. 1/3071 useless extension candidates. Maximal degree in co-relation 14055. Up to 314 conditions per place. [2021-12-17 22:48:14,915 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 256 selfloop transitions, 81 changer transitions 48/472 dead transitions. [2021-12-17 22:48:14,916 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 472 transitions, 5409 flow [2021-12-17 22:48:14,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-17 22:48:14,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-12-17 22:48:14,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3991 transitions. [2021-12-17 22:48:14,920 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6478896103896103 [2021-12-17 22:48:14,920 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3991 transitions. [2021-12-17 22:48:14,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3991 transitions. [2021-12-17 22:48:14,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:14,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3991 transitions. [2021-12-17 22:48:14,924 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) [2021-12-17 22:48:14,927 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) [2021-12-17 22:48:14,928 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) [2021-12-17 22:48:14,928 INFO L186 Difference]: Start difference. First operand has 390 places, 232 transitions, 1576 flow. Second operand 35 states and 3991 transitions. [2021-12-17 22:48:14,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 472 transitions, 5409 flow [2021-12-17 22:48:15,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 472 transitions, 4897 flow, removed 198 selfloop flow, removed 39 redundant places. [2021-12-17 22:48:15,024 INFO L242 Difference]: Finished difference. Result has 361 places, 254 transitions, 2081 flow [2021-12-17 22:48:15,025 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1452, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2081, PETRI_PLACES=361, PETRI_TRANSITIONS=254} [2021-12-17 22:48:15,025 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 202 predicate places. [2021-12-17 22:48:15,025 INFO L470 AbstractCegarLoop]: Abstraction has has 361 places, 254 transitions, 2081 flow [2021-12-17 22:48:15,025 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) [2021-12-17 22:48:15,026 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:15,026 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:15,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-12-17 22:48:15,026 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:48:15,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:15,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1856057133, now seen corresponding path program 7 times [2021-12-17 22:48:15,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:15,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208527473] [2021-12-17 22:48:15,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:15,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:15,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:48:15,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:15,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208527473] [2021-12-17 22:48:15,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208527473] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:15,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:15,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-17 22:48:15,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055417314] [2021-12-17 22:48:15,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:15,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-17 22:48:15,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:15,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-17 22:48:15,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2021-12-17 22:48:15,407 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-17 22:48:15,409 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 254 transitions, 2081 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) [2021-12-17 22:48:15,409 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:15,412 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-17 22:48:15,412 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:17,878 INFO L129 PetriNetUnfolder]: 1045/3541 cut-off events. [2021-12-17 22:48:17,878 INFO L130 PetriNetUnfolder]: For 49440/49449 co-relation queries the response was YES. [2021-12-17 22:48:17,911 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17385 conditions, 3541 events. 1045/3541 cut-off events. For 49440/49449 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 27913 event pairs, 279 based on Foata normal form. 3/3474 useless extension candidates. Maximal degree in co-relation 17254. Up to 864 conditions per place. [2021-12-17 22:48:17,921 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 343 selfloop transitions, 43 changer transitions 36/509 dead transitions. [2021-12-17 22:48:17,921 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 509 transitions, 6208 flow [2021-12-17 22:48:17,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-17 22:48:17,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-12-17 22:48:17,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4020 transitions. [2021-12-17 22:48:17,923 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6525974025974026 [2021-12-17 22:48:17,923 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4020 transitions. [2021-12-17 22:48:17,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4020 transitions. [2021-12-17 22:48:17,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:17,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4020 transitions. [2021-12-17 22:48:17,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.85714285714286) internal successors, (4020), 35 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:17,930 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) [2021-12-17 22:48:17,930 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) [2021-12-17 22:48:17,930 INFO L186 Difference]: Start difference. First operand has 361 places, 254 transitions, 2081 flow. Second operand 35 states and 4020 transitions. [2021-12-17 22:48:17,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 509 transitions, 6208 flow [2021-12-17 22:48:18,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 509 transitions, 5503 flow, removed 192 selfloop flow, removed 20 redundant places. [2021-12-17 22:48:18,033 INFO L242 Difference]: Finished difference. Result has 389 places, 282 transitions, 2580 flow [2021-12-17 22:48:18,034 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1683, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2580, PETRI_PLACES=389, PETRI_TRANSITIONS=282} [2021-12-17 22:48:18,034 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 230 predicate places. [2021-12-17 22:48:18,034 INFO L470 AbstractCegarLoop]: Abstraction has has 389 places, 282 transitions, 2580 flow [2021-12-17 22:48:18,035 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) [2021-12-17 22:48:18,035 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:18,035 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] [2021-12-17 22:48:18,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-12-17 22:48:18,035 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:48:18,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:18,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1924135095, now seen corresponding path program 8 times [2021-12-17 22:48:18,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:18,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383121392] [2021-12-17 22:48:18,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:18,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:18,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:18,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:48:18,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:18,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383121392] [2021-12-17 22:48:18,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383121392] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:18,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:18,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-17 22:48:18,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736222624] [2021-12-17 22:48:18,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:18,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-17 22:48:18,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:18,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-17 22:48:18,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-12-17 22:48:18,510 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-17 22:48:18,511 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 282 transitions, 2580 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) [2021-12-17 22:48:18,511 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:18,511 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-17 22:48:18,511 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:21,697 INFO L129 PetriNetUnfolder]: 1138/3985 cut-off events. [2021-12-17 22:48:21,698 INFO L130 PetriNetUnfolder]: For 60127/60138 co-relation queries the response was YES. [2021-12-17 22:48:21,733 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19292 conditions, 3985 events. 1138/3985 cut-off events. For 60127/60138 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 32955 event pairs, 187 based on Foata normal form. 1/3828 useless extension candidates. Maximal degree in co-relation 19145. Up to 690 conditions per place. [2021-12-17 22:48:21,743 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 372 selfloop transitions, 59 changer transitions 48/566 dead transitions. [2021-12-17 22:48:21,744 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 566 transitions, 7812 flow [2021-12-17 22:48:21,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-17 22:48:21,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-12-17 22:48:21,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4007 transitions. [2021-12-17 22:48:21,746 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.650487012987013 [2021-12-17 22:48:21,746 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4007 transitions. [2021-12-17 22:48:21,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4007 transitions. [2021-12-17 22:48:21,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:21,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4007 transitions. [2021-12-17 22:48:21,749 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) [2021-12-17 22:48:21,752 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) [2021-12-17 22:48:21,752 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) [2021-12-17 22:48:21,752 INFO L186 Difference]: Start difference. First operand has 389 places, 282 transitions, 2580 flow. Second operand 35 states and 4007 transitions. [2021-12-17 22:48:21,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 566 transitions, 7812 flow [2021-12-17 22:48:21,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 566 transitions, 7091 flow, removed 320 selfloop flow, removed 19 redundant places. [2021-12-17 22:48:21,912 INFO L242 Difference]: Finished difference. Result has 414 places, 306 transitions, 2773 flow [2021-12-17 22:48:21,913 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2112, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2773, PETRI_PLACES=414, PETRI_TRANSITIONS=306} [2021-12-17 22:48:21,913 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 255 predicate places. [2021-12-17 22:48:21,913 INFO L470 AbstractCegarLoop]: Abstraction has has 414 places, 306 transitions, 2773 flow [2021-12-17 22:48:21,914 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) [2021-12-17 22:48:21,914 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:21,914 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] [2021-12-17 22:48:21,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-12-17 22:48:21,914 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:48:21,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:21,915 INFO L85 PathProgramCache]: Analyzing trace with hash -2023343863, now seen corresponding path program 9 times [2021-12-17 22:48:21,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:21,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595321049] [2021-12-17 22:48:21,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:21,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:22,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:48:22,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:22,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595321049] [2021-12-17 22:48:22,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595321049] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:22,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:22,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-17 22:48:22,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941531896] [2021-12-17 22:48:22,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:22,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-17 22:48:22,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:22,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-17 22:48:22,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2021-12-17 22:48:22,385 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-17 22:48:22,386 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 306 transitions, 2773 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) [2021-12-17 22:48:22,386 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:22,386 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-17 22:48:22,386 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:25,479 INFO L129 PetriNetUnfolder]: 1341/4476 cut-off events. [2021-12-17 22:48:25,480 INFO L130 PetriNetUnfolder]: For 81807/81811 co-relation queries the response was YES. [2021-12-17 22:48:25,524 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24237 conditions, 4476 events. 1341/4476 cut-off events. For 81807/81811 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 37562 event pairs, 416 based on Foata normal form. 1/4391 useless extension candidates. Maximal degree in co-relation 24080. Up to 1269 conditions per place. [2021-12-17 22:48:25,538 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 403 selfloop transitions, 44 changer transitions 36/570 dead transitions. [2021-12-17 22:48:25,539 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 570 transitions, 7423 flow [2021-12-17 22:48:25,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-17 22:48:25,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-12-17 22:48:25,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4036 transitions. [2021-12-17 22:48:25,541 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6551948051948052 [2021-12-17 22:48:25,541 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4036 transitions. [2021-12-17 22:48:25,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4036 transitions. [2021-12-17 22:48:25,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:25,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4036 transitions. [2021-12-17 22:48:25,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.31428571428572) internal successors, (4036), 35 states have internal predecessors, (4036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:25,547 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) [2021-12-17 22:48:25,548 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) [2021-12-17 22:48:25,548 INFO L186 Difference]: Start difference. First operand has 414 places, 306 transitions, 2773 flow. Second operand 35 states and 4036 transitions. [2021-12-17 22:48:25,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 570 transitions, 7423 flow [2021-12-17 22:48:25,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 570 transitions, 6770 flow, removed 221 selfloop flow, removed 19 redundant places. [2021-12-17 22:48:25,799 INFO L242 Difference]: Finished difference. Result has 444 places, 334 transitions, 3361 flow [2021-12-17 22:48:25,799 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2383, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3361, PETRI_PLACES=444, PETRI_TRANSITIONS=334} [2021-12-17 22:48:25,800 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 285 predicate places. [2021-12-17 22:48:25,800 INFO L470 AbstractCegarLoop]: Abstraction has has 444 places, 334 transitions, 3361 flow [2021-12-17 22:48:25,800 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) [2021-12-17 22:48:25,800 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:25,800 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] [2021-12-17 22:48:25,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-12-17 22:48:25,801 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:48:25,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:25,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1594758063, now seen corresponding path program 10 times [2021-12-17 22:48:25,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:25,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623209689] [2021-12-17 22:48:25,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:25,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:26,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:48:26,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:26,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623209689] [2021-12-17 22:48:26,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623209689] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:26,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:26,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-17 22:48:26,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118693718] [2021-12-17 22:48:26,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:26,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-17 22:48:26,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:26,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-17 22:48:26,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-12-17 22:48:26,294 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-17 22:48:26,295 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 334 transitions, 3361 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) [2021-12-17 22:48:26,295 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:26,295 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-17 22:48:26,295 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:29,935 INFO L129 PetriNetUnfolder]: 1562/5358 cut-off events. [2021-12-17 22:48:29,936 INFO L130 PetriNetUnfolder]: For 111372/111389 co-relation queries the response was YES. [2021-12-17 22:48:29,996 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29699 conditions, 5358 events. 1562/5358 cut-off events. For 111372/111389 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 47924 event pairs, 371 based on Foata normal form. 5/5202 useless extension candidates. Maximal degree in co-relation 29525. Up to 1354 conditions per place. [2021-12-17 22:48:30,014 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 494 selfloop transitions, 72 changer transitions 43/696 dead transitions. [2021-12-17 22:48:30,015 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 696 transitions, 10950 flow [2021-12-17 22:48:30,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-17 22:48:30,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-12-17 22:48:30,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4017 transitions. [2021-12-17 22:48:30,017 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6521103896103896 [2021-12-17 22:48:30,017 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4017 transitions. [2021-12-17 22:48:30,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4017 transitions. [2021-12-17 22:48:30,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:30,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4017 transitions. [2021-12-17 22:48:30,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.77142857142857) internal successors, (4017), 35 states have internal predecessors, (4017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:30,023 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) [2021-12-17 22:48:30,024 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) [2021-12-17 22:48:30,024 INFO L186 Difference]: Start difference. First operand has 444 places, 334 transitions, 3361 flow. Second operand 35 states and 4017 transitions. [2021-12-17 22:48:30,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 696 transitions, 10950 flow [2021-12-17 22:48:30,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 696 transitions, 9952 flow, removed 484 selfloop flow, removed 18 redundant places. [2021-12-17 22:48:30,437 INFO L242 Difference]: Finished difference. Result has 476 places, 363 transitions, 3913 flow [2021-12-17 22:48:30,437 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2804, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3913, PETRI_PLACES=476, PETRI_TRANSITIONS=363} [2021-12-17 22:48:30,437 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 317 predicate places. [2021-12-17 22:48:30,438 INFO L470 AbstractCegarLoop]: Abstraction has has 476 places, 363 transitions, 3913 flow [2021-12-17 22:48:30,438 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) [2021-12-17 22:48:30,438 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:30,438 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] [2021-12-17 22:48:30,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-12-17 22:48:30,438 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:48:30,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:30,439 INFO L85 PathProgramCache]: Analyzing trace with hash -883252263, now seen corresponding path program 11 times [2021-12-17 22:48:30,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:30,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911780143] [2021-12-17 22:48:30,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:30,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:30,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:48:30,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:30,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911780143] [2021-12-17 22:48:30,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911780143] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:30,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:30,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-17 22:48:30,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469385972] [2021-12-17 22:48:30,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:30,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-17 22:48:30,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:30,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-17 22:48:30,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-12-17 22:48:30,833 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-17 22:48:30,834 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 363 transitions, 3913 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) [2021-12-17 22:48:30,834 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:30,834 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-17 22:48:30,834 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:34,484 INFO L129 PetriNetUnfolder]: 1701/5909 cut-off events. [2021-12-17 22:48:34,484 INFO L130 PetriNetUnfolder]: For 134348/134367 co-relation queries the response was YES. [2021-12-17 22:48:34,565 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33268 conditions, 5909 events. 1701/5909 cut-off events. For 134348/134367 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 54060 event pairs, 344 based on Foata normal form. 3/5685 useless extension candidates. Maximal degree in co-relation 33078. Up to 1503 conditions per place. [2021-12-17 22:48:34,588 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 463 selfloop transitions, 65 changer transitions 48/663 dead transitions. [2021-12-17 22:48:34,588 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 663 transitions, 10276 flow [2021-12-17 22:48:34,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-17 22:48:34,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-12-17 22:48:34,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4011 transitions. [2021-12-17 22:48:34,592 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6511363636363636 [2021-12-17 22:48:34,592 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4011 transitions. [2021-12-17 22:48:34,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4011 transitions. [2021-12-17 22:48:34,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:34,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4011 transitions. [2021-12-17 22:48:34,596 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) [2021-12-17 22:48:34,598 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) [2021-12-17 22:48:34,599 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) [2021-12-17 22:48:34,599 INFO L186 Difference]: Start difference. First operand has 476 places, 363 transitions, 3913 flow. Second operand 35 states and 4011 transitions. [2021-12-17 22:48:34,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 663 transitions, 10276 flow [2021-12-17 22:48:35,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 663 transitions, 9672 flow, removed 297 selfloop flow, removed 16 redundant places. [2021-12-17 22:48:35,037 INFO L242 Difference]: Finished difference. Result has 506 places, 389 transitions, 4210 flow [2021-12-17 22:48:35,038 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=3420, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4210, PETRI_PLACES=506, PETRI_TRANSITIONS=389} [2021-12-17 22:48:35,038 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 347 predicate places. [2021-12-17 22:48:35,038 INFO L470 AbstractCegarLoop]: Abstraction has has 506 places, 389 transitions, 4210 flow [2021-12-17 22:48:35,039 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) [2021-12-17 22:48:35,039 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:35,039 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] [2021-12-17 22:48:35,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-12-17 22:48:35,039 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:48:35,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:35,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1927054273, now seen corresponding path program 12 times [2021-12-17 22:48:35,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:35,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671771259] [2021-12-17 22:48:35,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:35,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:35,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:35,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:48:35,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:35,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671771259] [2021-12-17 22:48:35,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671771259] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:35,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:35,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-17 22:48:35,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87108774] [2021-12-17 22:48:35,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:35,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-17 22:48:35,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:35,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-17 22:48:35,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-12-17 22:48:35,477 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-17 22:48:35,478 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 389 transitions, 4210 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) [2021-12-17 22:48:35,478 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:35,478 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-17 22:48:35,478 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:39,369 INFO L129 PetriNetUnfolder]: 1772/5826 cut-off events. [2021-12-17 22:48:39,370 INFO L130 PetriNetUnfolder]: For 153911/153922 co-relation queries the response was YES. [2021-12-17 22:48:39,454 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36245 conditions, 5826 events. 1772/5826 cut-off events. For 153911/153922 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 52173 event pairs, 569 based on Foata normal form. 5/5726 useless extension candidates. Maximal degree in co-relation 36043. Up to 1963 conditions per place. [2021-12-17 22:48:39,475 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 503 selfloop transitions, 49 changer transitions 36/675 dead transitions. [2021-12-17 22:48:39,475 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 675 transitions, 10061 flow [2021-12-17 22:48:39,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-17 22:48:39,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-12-17 22:48:39,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4048 transitions. [2021-12-17 22:48:39,477 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2021-12-17 22:48:39,478 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4048 transitions. [2021-12-17 22:48:39,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4048 transitions. [2021-12-17 22:48:39,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:39,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4048 transitions. [2021-12-17 22:48:39,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.65714285714286) internal successors, (4048), 35 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:39,484 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) [2021-12-17 22:48:39,484 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) [2021-12-17 22:48:39,484 INFO L186 Difference]: Start difference. First operand has 506 places, 389 transitions, 4210 flow. Second operand 35 states and 4048 transitions. [2021-12-17 22:48:39,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 675 transitions, 10061 flow [2021-12-17 22:48:40,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 675 transitions, 9378 flow, removed 258 selfloop flow, removed 19 redundant places. [2021-12-17 22:48:40,048 INFO L242 Difference]: Finished difference. Result has 530 places, 411 transitions, 4627 flow [2021-12-17 22:48:40,048 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=3729, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4627, PETRI_PLACES=530, PETRI_TRANSITIONS=411} [2021-12-17 22:48:40,049 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 371 predicate places. [2021-12-17 22:48:40,049 INFO L470 AbstractCegarLoop]: Abstraction has has 530 places, 411 transitions, 4627 flow [2021-12-17 22:48:40,049 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) [2021-12-17 22:48:40,049 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:40,049 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] [2021-12-17 22:48:40,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-12-17 22:48:40,053 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:48:40,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:40,054 INFO L85 PathProgramCache]: Analyzing trace with hash 2049172479, now seen corresponding path program 13 times [2021-12-17 22:48:40,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:40,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289328212] [2021-12-17 22:48:40,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:40,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:40,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:40,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:48:40,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:40,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289328212] [2021-12-17 22:48:40,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289328212] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:40,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:40,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-17 22:48:40,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715337500] [2021-12-17 22:48:40,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:40,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-17 22:48:40,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:40,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-17 22:48:40,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-12-17 22:48:40,567 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-17 22:48:40,568 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 411 transitions, 4627 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) [2021-12-17 22:48:40,568 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:40,568 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-17 22:48:40,568 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:44,646 INFO L129 PetriNetUnfolder]: 1927/6607 cut-off events. [2021-12-17 22:48:44,647 INFO L130 PetriNetUnfolder]: For 174000/174019 co-relation queries the response was YES. [2021-12-17 22:48:44,756 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39723 conditions, 6607 events. 1927/6607 cut-off events. For 174000/174019 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 61747 event pairs, 466 based on Foata normal form. 3/6357 useless extension candidates. Maximal degree in co-relation 39511. Up to 2033 conditions per place. [2021-12-17 22:48:44,784 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 516 selfloop transitions, 58 changer transitions 48/709 dead transitions. [2021-12-17 22:48:44,784 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 709 transitions, 11282 flow [2021-12-17 22:48:44,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-17 22:48:44,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-12-17 22:48:44,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4027 transitions. [2021-12-17 22:48:44,787 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6537337662337662 [2021-12-17 22:48:44,788 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4027 transitions. [2021-12-17 22:48:44,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4027 transitions. [2021-12-17 22:48:44,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:44,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4027 transitions. [2021-12-17 22:48:44,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.05714285714286) internal successors, (4027), 35 states have internal predecessors, (4027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:44,794 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) [2021-12-17 22:48:44,795 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) [2021-12-17 22:48:44,795 INFO L186 Difference]: Start difference. First operand has 530 places, 411 transitions, 4627 flow. Second operand 35 states and 4027 transitions. [2021-12-17 22:48:44,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 709 transitions, 11282 flow [2021-12-17 22:48:45,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 709 transitions, 10659 flow, removed 251 selfloop flow, removed 20 redundant places. [2021-12-17 22:48:45,460 INFO L242 Difference]: Finished difference. Result has 558 places, 438 transitions, 4976 flow [2021-12-17 22:48:45,460 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=4130, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4976, PETRI_PLACES=558, PETRI_TRANSITIONS=438} [2021-12-17 22:48:45,461 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 399 predicate places. [2021-12-17 22:48:45,461 INFO L470 AbstractCegarLoop]: Abstraction has has 558 places, 438 transitions, 4976 flow [2021-12-17 22:48:45,461 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) [2021-12-17 22:48:45,461 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:45,462 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] [2021-12-17 22:48:45,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-12-17 22:48:45,462 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:48:45,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:45,462 INFO L85 PathProgramCache]: Analyzing trace with hash 149998049, now seen corresponding path program 14 times [2021-12-17 22:48:45,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:45,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561145247] [2021-12-17 22:48:45,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:45,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:45,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:48:45,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:45,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561145247] [2021-12-17 22:48:45,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561145247] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:45,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:45,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-17 22:48:45,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587491937] [2021-12-17 22:48:45,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:45,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-17 22:48:45,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:45,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-17 22:48:45,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-12-17 22:48:45,926 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-17 22:48:45,927 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 438 transitions, 4976 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) [2021-12-17 22:48:45,927 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:45,927 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-17 22:48:45,927 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:50,359 INFO L129 PetriNetUnfolder]: 2034/6617 cut-off events. [2021-12-17 22:48:50,359 INFO L130 PetriNetUnfolder]: For 207052/207068 co-relation queries the response was YES. [2021-12-17 22:48:50,615 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43836 conditions, 6617 events. 2034/6617 cut-off events. For 207052/207068 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 60849 event pairs, 725 based on Foata normal form. 5/6494 useless extension candidates. Maximal degree in co-relation 43608. Up to 2246 conditions per place. [2021-12-17 22:48:50,640 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 561 selfloop transitions, 53 changer transitions 36/737 dead transitions. [2021-12-17 22:48:50,640 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 737 transitions, 11516 flow [2021-12-17 22:48:50,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-17 22:48:50,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-12-17 22:48:50,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4050 transitions. [2021-12-17 22:48:50,643 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6574675324675324 [2021-12-17 22:48:50,643 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4050 transitions. [2021-12-17 22:48:50,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4050 transitions. [2021-12-17 22:48:50,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:50,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4050 transitions. [2021-12-17 22:48:50,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.71428571428571) internal successors, (4050), 35 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:50,648 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) [2021-12-17 22:48:50,649 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) [2021-12-17 22:48:50,649 INFO L186 Difference]: Start difference. First operand has 558 places, 438 transitions, 4976 flow. Second operand 35 states and 4050 transitions. [2021-12-17 22:48:50,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 737 transitions, 11516 flow [2021-12-17 22:48:51,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 737 transitions, 10810 flow, removed 300 selfloop flow, removed 19 redundant places. [2021-12-17 22:48:51,559 INFO L242 Difference]: Finished difference. Result has 584 places, 462 transitions, 5450 flow [2021-12-17 22:48:51,560 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=4451, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5450, PETRI_PLACES=584, PETRI_TRANSITIONS=462} [2021-12-17 22:48:51,560 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 425 predicate places. [2021-12-17 22:48:51,561 INFO L470 AbstractCegarLoop]: Abstraction has has 584 places, 462 transitions, 5450 flow [2021-12-17 22:48:51,561 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) [2021-12-17 22:48:51,561 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:51,561 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] [2021-12-17 22:48:51,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-12-17 22:48:51,562 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:48:51,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:51,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1433681283, now seen corresponding path program 15 times [2021-12-17 22:48:51,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:51,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544705667] [2021-12-17 22:48:51,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:51,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:51,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:48:51,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:51,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544705667] [2021-12-17 22:48:51,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544705667] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:51,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:51,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-17 22:48:51,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314489975] [2021-12-17 22:48:51,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:51,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-17 22:48:51,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:51,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-17 22:48:51,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2021-12-17 22:48:51,958 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-17 22:48:51,959 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 462 transitions, 5450 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) [2021-12-17 22:48:51,959 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:51,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-17 22:48:51,960 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:57,428 INFO L129 PetriNetUnfolder]: 2370/7862 cut-off events. [2021-12-17 22:48:57,429 INFO L130 PetriNetUnfolder]: For 263071/263097 co-relation queries the response was YES. [2021-12-17 22:48:57,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53085 conditions, 7862 events. 2370/7862 cut-off events. For 263071/263097 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 76369 event pairs, 664 based on Foata normal form. 3/7612 useless extension candidates. Maximal degree in co-relation 52846. Up to 2148 conditions per place. [2021-12-17 22:48:57,577 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 635 selfloop transitions, 41 changer transitions 76/839 dead transitions. [2021-12-17 22:48:57,578 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 839 transitions, 13547 flow [2021-12-17 22:48:57,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-12-17 22:48:57,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-12-17 22:48:57,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 6054 transitions. [2021-12-17 22:48:57,581 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6490137221269296 [2021-12-17 22:48:57,581 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 6054 transitions. [2021-12-17 22:48:57,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 6054 transitions. [2021-12-17 22:48:57,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:57,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 6054 transitions. [2021-12-17 22:48:57,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 114.22641509433963) internal successors, (6054), 53 states have internal predecessors, (6054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:57,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:57,590 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:57,590 INFO L186 Difference]: Start difference. First operand has 584 places, 462 transitions, 5450 flow. Second operand 53 states and 6054 transitions. [2021-12-17 22:48:57,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 839 transitions, 13547 flow [2021-12-17 22:48:58,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 601 places, 839 transitions, 12875 flow, removed 297 selfloop flow, removed 20 redundant places. [2021-12-17 22:48:58,543 INFO L242 Difference]: Finished difference. Result has 649 places, 474 transitions, 5502 flow [2021-12-17 22:48:58,544 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=4907, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=5502, PETRI_PLACES=649, PETRI_TRANSITIONS=474} [2021-12-17 22:48:58,545 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 490 predicate places. [2021-12-17 22:48:58,545 INFO L470 AbstractCegarLoop]: Abstraction has has 649 places, 474 transitions, 5502 flow [2021-12-17 22:48:58,546 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) [2021-12-17 22:48:58,546 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:58,546 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] [2021-12-17 22:48:58,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-12-17 22:48:58,547 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:48:58,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:58,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1695857393, now seen corresponding path program 16 times [2021-12-17 22:48:58,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:58,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114343685] [2021-12-17 22:48:58,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:58,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:59,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:48:59,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:59,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114343685] [2021-12-17 22:48:59,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114343685] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:59,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:59,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-17 22:48:59,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074649841] [2021-12-17 22:48:59,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:59,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-17 22:48:59,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:59,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-17 22:48:59,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-12-17 22:48:59,047 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-17 22:48:59,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 649 places, 474 transitions, 5502 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) [2021-12-17 22:48:59,049 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:59,049 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-17 22:48:59,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:49:05,792 INFO L129 PetriNetUnfolder]: 2386/7763 cut-off events. [2021-12-17 22:49:05,792 INFO L130 PetriNetUnfolder]: For 340496/340517 co-relation queries the response was YES. [2021-12-17 22:49:05,941 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57762 conditions, 7763 events. 2386/7763 cut-off events. For 340496/340517 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 74594 event pairs, 891 based on Foata normal form. 10/7640 useless extension candidates. Maximal degree in co-relation 57489. Up to 2969 conditions per place. [2021-12-17 22:49:05,975 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 593 selfloop transitions, 71 changer transitions 112/863 dead transitions. [2021-12-17 22:49:05,975 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 674 places, 863 transitions, 13527 flow [2021-12-17 22:49:05,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-12-17 22:49:05,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-12-17 22:49:05,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 7022 transitions. [2021-12-17 22:49:05,978 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6435117302052786 [2021-12-17 22:49:05,979 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 7022 transitions. [2021-12-17 22:49:05,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 7022 transitions. [2021-12-17 22:49:05,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:49:05,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 7022 transitions. [2021-12-17 22:49:05,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 113.25806451612904) internal successors, (7022), 62 states have internal predecessors, (7022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:06,004 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) [2021-12-17 22:49:06,021 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) [2021-12-17 22:49:06,021 INFO L186 Difference]: Start difference. First operand has 649 places, 474 transitions, 5502 flow. Second operand 62 states and 7022 transitions. [2021-12-17 22:49:06,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 674 places, 863 transitions, 13527 flow [2021-12-17 22:49:07,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 639 places, 863 transitions, 13021 flow, removed 213 selfloop flow, removed 35 redundant places. [2021-12-17 22:49:07,635 INFO L242 Difference]: Finished difference. Result has 689 places, 476 transitions, 5604 flow [2021-12-17 22:49:07,636 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=5203, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=5604, PETRI_PLACES=689, PETRI_TRANSITIONS=476} [2021-12-17 22:49:07,637 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 530 predicate places. [2021-12-17 22:49:07,637 INFO L470 AbstractCegarLoop]: Abstraction has has 689 places, 476 transitions, 5604 flow [2021-12-17 22:49:07,637 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) [2021-12-17 22:49:07,638 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:49:07,638 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] [2021-12-17 22:49:07,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-12-17 22:49:07,638 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:49:07,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:49:07,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1782350361, now seen corresponding path program 17 times [2021-12-17 22:49:07,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:49:07,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414992166] [2021-12-17 22:49:07,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:49:07,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:49:07,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:49:08,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:49:08,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:49:08,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414992166] [2021-12-17 22:49:08,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414992166] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:49:08,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:49:08,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-17 22:49:08,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952201398] [2021-12-17 22:49:08,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:49:08,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-17 22:49:08,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:49:08,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-17 22:49:08,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-12-17 22:49:08,055 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-17 22:49:08,056 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 689 places, 476 transitions, 5604 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) [2021-12-17 22:49:08,056 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:49:08,056 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-17 22:49:08,056 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:49:13,683 INFO L129 PetriNetUnfolder]: 2550/8587 cut-off events. [2021-12-17 22:49:13,683 INFO L130 PetriNetUnfolder]: For 331342/331372 co-relation queries the response was YES. [2021-12-17 22:49:13,845 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60331 conditions, 8587 events. 2550/8587 cut-off events. For 331342/331372 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 85187 event pairs, 905 based on Foata normal form. 3/8282 useless extension candidates. Maximal degree in co-relation 60039. Up to 3536 conditions per place. [2021-12-17 22:49:13,878 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 579 selfloop transitions, 55 changer transitions 52/773 dead transitions. [2021-12-17 22:49:13,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 675 places, 773 transitions, 12979 flow [2021-12-17 22:49:13,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-17 22:49:13,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-12-17 22:49:13,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4043 transitions. [2021-12-17 22:49:13,881 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6563311688311688 [2021-12-17 22:49:13,881 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4043 transitions. [2021-12-17 22:49:13,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4043 transitions. [2021-12-17 22:49:13,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:49:13,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4043 transitions. [2021-12-17 22:49:13,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.51428571428572) internal successors, (4043), 35 states have internal predecessors, (4043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:13,887 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) [2021-12-17 22:49:13,887 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) [2021-12-17 22:49:13,887 INFO L186 Difference]: Start difference. First operand has 689 places, 476 transitions, 5604 flow. Second operand 35 states and 4043 transitions. [2021-12-17 22:49:13,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 675 places, 773 transitions, 12979 flow [2021-12-17 22:49:15,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 622 places, 773 transitions, 12549 flow, removed 125 selfloop flow, removed 53 redundant places. [2021-12-17 22:49:15,492 INFO L242 Difference]: Finished difference. Result has 652 places, 504 transitions, 6317 flow [2021-12-17 22:49:15,507 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=5374, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6317, PETRI_PLACES=652, PETRI_TRANSITIONS=504} [2021-12-17 22:49:15,507 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 493 predicate places. [2021-12-17 22:49:15,507 INFO L470 AbstractCegarLoop]: Abstraction has has 652 places, 504 transitions, 6317 flow [2021-12-17 22:49:15,508 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) [2021-12-17 22:49:15,509 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:49:15,509 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] [2021-12-17 22:49:15,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-12-17 22:49:15,509 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:49:15,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:49:15,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1772508661, now seen corresponding path program 18 times [2021-12-17 22:49:15,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:49:15,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117653875] [2021-12-17 22:49:15,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:49:15,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:49:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:49:15,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:49:15,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:49:15,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117653875] [2021-12-17 22:49:15,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117653875] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:49:15,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:49:15,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-17 22:49:15,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967589171] [2021-12-17 22:49:15,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:49:15,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-17 22:49:15,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:49:15,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-17 22:49:15,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-12-17 22:49:15,958 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-17 22:49:15,958 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 652 places, 504 transitions, 6317 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) [2021-12-17 22:49:15,959 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:49:15,959 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-17 22:49:15,959 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:49:21,781 INFO L129 PetriNetUnfolder]: 2680/8887 cut-off events. [2021-12-17 22:49:21,782 INFO L130 PetriNetUnfolder]: For 351114/351137 co-relation queries the response was YES. [2021-12-17 22:49:21,949 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63764 conditions, 8887 events. 2680/8887 cut-off events. For 351114/351137 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 88221 event pairs, 995 based on Foata normal form. 10/8738 useless extension candidates. Maximal degree in co-relation 63487. Up to 3330 conditions per place. [2021-12-17 22:49:21,984 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 647 selfloop transitions, 58 changer transitions 36/828 dead transitions. [2021-12-17 22:49:21,985 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 671 places, 828 transitions, 13507 flow [2021-12-17 22:49:21,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-17 22:49:21,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-12-17 22:49:21,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4065 transitions. [2021-12-17 22:49:21,987 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6599025974025974 [2021-12-17 22:49:21,987 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4065 transitions. [2021-12-17 22:49:21,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4065 transitions. [2021-12-17 22:49:21,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:49:21,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4065 transitions. [2021-12-17 22:49:21,990 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) [2021-12-17 22:49:21,993 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) [2021-12-17 22:49:21,993 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) [2021-12-17 22:49:21,993 INFO L186 Difference]: Start difference. First operand has 652 places, 504 transitions, 6317 flow. Second operand 35 states and 4065 transitions. [2021-12-17 22:49:21,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 671 places, 828 transitions, 13507 flow [2021-12-17 22:49:23,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 653 places, 828 transitions, 12703 flow, removed 368 selfloop flow, removed 18 redundant places. [2021-12-17 22:49:23,880 INFO L242 Difference]: Finished difference. Result has 681 places, 529 transitions, 6839 flow [2021-12-17 22:49:23,881 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=5713, PETRI_DIFFERENCE_MINUEND_PLACES=619, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6839, PETRI_PLACES=681, PETRI_TRANSITIONS=529} [2021-12-17 22:49:23,881 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 522 predicate places. [2021-12-17 22:49:23,881 INFO L470 AbstractCegarLoop]: Abstraction has has 681 places, 529 transitions, 6839 flow [2021-12-17 22:49:23,882 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) [2021-12-17 22:49:23,882 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:49:23,882 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] [2021-12-17 22:49:23,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-12-17 22:49:23,882 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:49:23,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:49:23,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1771534393, now seen corresponding path program 19 times [2021-12-17 22:49:23,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:49:23,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789577442] [2021-12-17 22:49:23,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:49:23,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:49:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:49:24,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:49:24,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:49:24,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789577442] [2021-12-17 22:49:24,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789577442] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:49:24,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:49:24,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-17 22:49:24,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959936642] [2021-12-17 22:49:24,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:49:24,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-17 22:49:24,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:49:24,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-17 22:49:24,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2021-12-17 22:49:24,358 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-17 22:49:24,359 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 681 places, 529 transitions, 6839 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) [2021-12-17 22:49:24,359 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:49:24,359 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-17 22:49:24,359 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:49:30,810 INFO L129 PetriNetUnfolder]: 2862/9455 cut-off events. [2021-12-17 22:49:30,811 INFO L130 PetriNetUnfolder]: For 388176/388209 co-relation queries the response was YES. [2021-12-17 22:49:31,084 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69151 conditions, 9455 events. 2862/9455 cut-off events. For 388176/388209 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 95169 event pairs, 1432 based on Foata normal form. 6/9146 useless extension candidates. Maximal degree in co-relation 68861. Up to 2577 conditions per place. [2021-12-17 22:49:31,125 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 634 selfloop transitions, 50 changer transitions 47/818 dead transitions. [2021-12-17 22:49:31,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 700 places, 818 transitions, 14194 flow [2021-12-17 22:49:31,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-17 22:49:31,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-12-17 22:49:31,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4068 transitions. [2021-12-17 22:49:31,127 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6603896103896104 [2021-12-17 22:49:31,127 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4068 transitions. [2021-12-17 22:49:31,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4068 transitions. [2021-12-17 22:49:31,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:49:31,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4068 transitions. [2021-12-17 22:49:31,131 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) [2021-12-17 22:49:31,133 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) [2021-12-17 22:49:31,134 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) [2021-12-17 22:49:31,134 INFO L186 Difference]: Start difference. First operand has 681 places, 529 transitions, 6839 flow. Second operand 35 states and 4068 transitions. [2021-12-17 22:49:31,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 700 places, 818 transitions, 14194 flow [2021-12-17 22:49:33,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 680 places, 818 transitions, 13498 flow, removed 307 selfloop flow, removed 20 redundant places. [2021-12-17 22:49:33,239 INFO L242 Difference]: Finished difference. Result has 710 places, 557 transitions, 7317 flow [2021-12-17 22:49:33,240 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=6238, PETRI_DIFFERENCE_MINUEND_PLACES=646, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=7317, PETRI_PLACES=710, PETRI_TRANSITIONS=557} [2021-12-17 22:49:33,240 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 551 predicate places. [2021-12-17 22:49:33,240 INFO L470 AbstractCegarLoop]: Abstraction has has 710 places, 557 transitions, 7317 flow [2021-12-17 22:49:33,241 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) [2021-12-17 22:49:33,241 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:49:33,241 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:49:33,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-12-17 22:49:33,241 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:49:33,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:49:33,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1278883055, now seen corresponding path program 20 times [2021-12-17 22:49:33,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:49:33,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399294473] [2021-12-17 22:49:33,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:49:33,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:49:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:49:33,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:49:33,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:49:33,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399294473] [2021-12-17 22:49:33,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399294473] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:49:33,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:49:33,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-17 22:49:33,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989398043] [2021-12-17 22:49:33,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:49:33,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-17 22:49:33,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:49:33,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-17 22:49:33,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2021-12-17 22:49:33,821 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-12-17 22:49:33,822 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 710 places, 557 transitions, 7317 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) [2021-12-17 22:49:33,822 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:49:33,822 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-12-17 22:49:33,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand