./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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-file-item-subst.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 be2a0d1eee532c8ad9f827ec91fa18dbacb100bdaebd8afe9a7f9b56098458ea --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:58:25,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:58:25,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:58:25,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:58:25,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:58:25,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:58:25,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:58:25,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:58:25,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:58:25,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:58:25,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:58:25,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:58:25,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:58:25,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:58:25,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:58:25,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:58:25,172 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:58:25,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:58:25,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:58:25,175 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:58:25,176 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:58:25,177 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:58:25,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:58:25,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:58:25,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:58:25,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:58:25,181 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:58:25,181 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:58:25,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:58:25,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:58:25,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:58:25,183 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:58:25,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:58:25,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:58:25,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:58:25,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:58:25,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:58:25,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:58:25,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:58:25,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:58:25,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:58:25,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:58:25,188 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:58:25,203 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:58:25,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:58:25,204 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:58:25,204 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:58:25,204 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:58:25,204 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:58:25,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:58:25,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:58:25,205 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:58:25,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:58:25,206 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:58:25,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:58:25,206 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:58:25,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:58:25,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:58:25,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:58:25,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:58:25,207 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:58:25,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:58:25,207 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:58:25,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:58:25,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:58:25,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:58:25,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:58:25,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:58:25,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:58:25,208 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:58:25,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:58:25,209 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:58:25,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:58:25,209 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:58:25,209 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:58:25,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:58:25,210 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be2a0d1eee532c8ad9f827ec91fa18dbacb100bdaebd8afe9a7f9b56098458ea [2022-07-21 08:58:25,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:58:25,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:58:25,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:58:25,465 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:58:25,466 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:58:25,467 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c [2022-07-21 08:58:25,521 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/750a29f46/4e77cb7860724c8db8901c8f49e3ff63/FLAG5a340994e [2022-07-21 08:58:25,838 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:58:25,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c [2022-07-21 08:58:25,844 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/750a29f46/4e77cb7860724c8db8901c8f49e3ff63/FLAG5a340994e [2022-07-21 08:58:26,281 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/750a29f46/4e77cb7860724c8db8901c8f49e3ff63 [2022-07-21 08:58:26,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:58:26,284 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:58:26,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:58:26,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:58:26,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:58:26,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:58:26" (1/1) ... [2022-07-21 08:58:26,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ad2a6cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:26, skipping insertion in model container [2022-07-21 08:58:26,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:58:26" (1/1) ... [2022-07-21 08:58:26,298 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:58:26,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:58:26,427 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-file-item-subst.wvr.c[3015,3028] [2022-07-21 08:58:26,431 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:58:26,436 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:58:26,508 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-file-item-subst.wvr.c[3015,3028] [2022-07-21 08:58:26,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:58:26,535 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:58:26,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:26 WrapperNode [2022-07-21 08:58:26,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:58:26,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:58:26,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:58:26,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:58:26,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:26" (1/1) ... [2022-07-21 08:58:26,553 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:26" (1/1) ... [2022-07-21 08:58:26,596 INFO L137 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 221 [2022-07-21 08:58:26,597 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:58:26,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:58:26,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:58:26,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:58:26,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:26" (1/1) ... [2022-07-21 08:58:26,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:26" (1/1) ... [2022-07-21 08:58:26,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:26" (1/1) ... [2022-07-21 08:58:26,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:26" (1/1) ... [2022-07-21 08:58:26,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:26" (1/1) ... [2022-07-21 08:58:26,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:26" (1/1) ... [2022-07-21 08:58:26,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:26" (1/1) ... [2022-07-21 08:58:26,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:58:26,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:58:26,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:58:26,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:58:26,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:26" (1/1) ... [2022-07-21 08:58:26,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:58:26,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:58:26,674 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 08:58:26,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 08:58:26,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:58:26,765 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-21 08:58:26,765 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-21 08:58:26,765 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-21 08:58:26,765 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-21 08:58:26,765 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-21 08:58:26,765 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-21 08:58:26,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:58:26,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:58:26,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:58:26,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:58:26,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:58:26,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 08:58:26,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:58:26,768 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:58:26,863 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:58:26,864 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:58:27,146 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:58:27,155 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:58:27,155 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 08:58:27,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:58:27 BoogieIcfgContainer [2022-07-21 08:58:27,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:58:27,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:58:27,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:58:27,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:58:27,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:58:26" (1/3) ... [2022-07-21 08:58:27,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66cf39d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:58:27, skipping insertion in model container [2022-07-21 08:58:27,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:26" (2/3) ... [2022-07-21 08:58:27,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66cf39d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:58:27, skipping insertion in model container [2022-07-21 08:58:27,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:58:27" (3/3) ... [2022-07-21 08:58:27,163 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-file-item-subst.wvr.c [2022-07-21 08:58:27,167 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:58:27,173 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:58:27,178 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 08:58:27,179 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:58:27,293 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-21 08:58:27,348 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 270 places, 286 transitions, 596 flow [2022-07-21 08:58:27,421 INFO L129 PetriNetUnfolder]: 26/283 cut-off events. [2022-07-21 08:58:27,422 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-21 08:58:27,431 INFO L84 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 283 events. 26/283 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 744 event pairs, 0 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 199. Up to 2 conditions per place. [2022-07-21 08:58:27,431 INFO L82 GeneralOperation]: Start removeDead. Operand has 270 places, 286 transitions, 596 flow [2022-07-21 08:58:27,437 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 256 places, 272 transitions, 562 flow [2022-07-21 08:58:27,449 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:58:27,456 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7f240031, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@677f871d [2022-07-21 08:58:27,456 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-21 08:58:27,497 INFO L129 PetriNetUnfolder]: 26/271 cut-off events. [2022-07-21 08:58:27,497 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-21 08:58:27,497 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:27,498 INFO L200 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] [2022-07-21 08:58:27,498 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:58:27,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:27,502 INFO L85 PathProgramCache]: Analyzing trace with hash -311524549, now seen corresponding path program 1 times [2022-07-21 08:58:27,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:27,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157394665] [2022-07-21 08:58:27,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:27,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:27,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:27,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:27,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157394665] [2022-07-21 08:58:27,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157394665] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:27,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:27,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:58:27,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079722107] [2022-07-21 08:58:27,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:27,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:58:27,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:27,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:58:27,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:58:27,713 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 286 [2022-07-21 08:58:27,716 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 272 transitions, 562 flow. Second operand has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:27,717 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:27,717 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 286 [2022-07-21 08:58:27,718 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:27,860 INFO L129 PetriNetUnfolder]: 74/833 cut-off events. [2022-07-21 08:58:27,860 INFO L130 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-07-21 08:58:27,869 INFO L84 FinitePrefix]: Finished finitePrefix Result has 933 conditions, 833 events. 74/833 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5322 event pairs, 8 based on Foata normal form. 39/777 useless extension candidates. Maximal degree in co-relation 739. Up to 33 conditions per place. [2022-07-21 08:58:27,874 INFO L132 encePairwiseOnDemand]: 270/286 looper letters, 17 selfloop transitions, 5 changer transitions 2/272 dead transitions. [2022-07-21 08:58:27,874 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 272 transitions, 621 flow [2022-07-21 08:58:27,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:58:27,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:58:27,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 826 transitions. [2022-07-21 08:58:27,890 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9627039627039627 [2022-07-21 08:58:27,890 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 826 transitions. [2022-07-21 08:58:27,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 826 transitions. [2022-07-21 08:58:27,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:27,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 826 transitions. [2022-07-21 08:58:27,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:27,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:27,907 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:27,908 INFO L186 Difference]: Start difference. First operand has 256 places, 272 transitions, 562 flow. Second operand 3 states and 826 transitions. [2022-07-21 08:58:27,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 272 transitions, 621 flow [2022-07-21 08:58:27,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 272 transitions, 599 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-21 08:58:27,920 INFO L242 Difference]: Finished difference. Result has 254 places, 265 transitions, 568 flow [2022-07-21 08:58:27,922 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=568, PETRI_PLACES=254, PETRI_TRANSITIONS=265} [2022-07-21 08:58:27,927 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, -2 predicate places. [2022-07-21 08:58:27,927 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 265 transitions, 568 flow [2022-07-21 08:58:27,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:27,928 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:27,929 INFO L200 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] [2022-07-21 08:58:27,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:58:27,929 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:58:27,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:27,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1177739013, now seen corresponding path program 1 times [2022-07-21 08:58:27,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:27,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697480024] [2022-07-21 08:58:27,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:27,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:28,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:28,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:28,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697480024] [2022-07-21 08:58:28,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697480024] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:28,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:28,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:58:28,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860235544] [2022-07-21 08:58:28,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:28,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:58:28,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:28,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:58:28,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:58:28,070 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 286 [2022-07-21 08:58:28,071 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 265 transitions, 568 flow. Second operand has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:28,072 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:28,072 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 286 [2022-07-21 08:58:28,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:28,212 INFO L129 PetriNetUnfolder]: 72/833 cut-off events. [2022-07-21 08:58:28,213 INFO L130 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2022-07-21 08:58:28,217 INFO L84 FinitePrefix]: Finished finitePrefix Result has 934 conditions, 833 events. 72/833 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 4888 event pairs, 8 based on Foata normal form. 6/755 useless extension candidates. Maximal degree in co-relation 400. Up to 28 conditions per place. [2022-07-21 08:58:28,220 INFO L132 encePairwiseOnDemand]: 280/286 looper letters, 22 selfloop transitions, 3 changer transitions 0/273 dead transitions. [2022-07-21 08:58:28,220 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 273 transitions, 645 flow [2022-07-21 08:58:28,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:58:28,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:58:28,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 814 transitions. [2022-07-21 08:58:28,223 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2022-07-21 08:58:28,223 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 814 transitions. [2022-07-21 08:58:28,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 814 transitions. [2022-07-21 08:58:28,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:28,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 814 transitions. [2022-07-21 08:58:28,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.3333333333333) internal successors, (814), 3 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:28,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:28,227 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:28,227 INFO L186 Difference]: Start difference. First operand has 254 places, 265 transitions, 568 flow. Second operand 3 states and 814 transitions. [2022-07-21 08:58:28,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 273 transitions, 645 flow [2022-07-21 08:58:28,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 273 transitions, 635 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:58:28,233 INFO L242 Difference]: Finished difference. Result has 254 places, 268 transitions, 594 flow [2022-07-21 08:58:28,234 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=594, PETRI_PLACES=254, PETRI_TRANSITIONS=268} [2022-07-21 08:58:28,235 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, -2 predicate places. [2022-07-21 08:58:28,235 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 268 transitions, 594 flow [2022-07-21 08:58:28,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:28,236 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:28,236 INFO L200 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] [2022-07-21 08:58:28,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:58:28,236 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:58:28,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:28,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1142741541, now seen corresponding path program 1 times [2022-07-21 08:58:28,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:28,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151726811] [2022-07-21 08:58:28,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:28,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:28,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:28,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:28,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151726811] [2022-07-21 08:58:28,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151726811] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:28,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:28,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:58:28,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818579025] [2022-07-21 08:58:28,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:28,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:58:28,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:28,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:58:28,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:58:28,420 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-21 08:58:28,422 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 268 transitions, 594 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:28,422 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:28,422 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-21 08:58:28,422 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:28,866 INFO L129 PetriNetUnfolder]: 826/2767 cut-off events. [2022-07-21 08:58:28,866 INFO L130 PetriNetUnfolder]: For 221/261 co-relation queries the response was YES. [2022-07-21 08:58:28,888 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4290 conditions, 2767 events. 826/2767 cut-off events. For 221/261 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 24968 event pairs, 152 based on Foata normal form. 1/2644 useless extension candidates. Maximal degree in co-relation 1853. Up to 336 conditions per place. [2022-07-21 08:58:28,897 INFO L132 encePairwiseOnDemand]: 271/286 looper letters, 79 selfloop transitions, 37 changer transitions 14/368 dead transitions. [2022-07-21 08:58:28,898 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 368 transitions, 1075 flow [2022-07-21 08:58:28,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:58:28,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 08:58:28,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4051 transitions. [2022-07-21 08:58:28,903 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8852709790209791 [2022-07-21 08:58:28,904 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4051 transitions. [2022-07-21 08:58:28,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4051 transitions. [2022-07-21 08:58:28,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:28,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4051 transitions. [2022-07-21 08:58:28,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 253.1875) internal successors, (4051), 16 states have internal predecessors, (4051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:28,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:28,919 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:28,919 INFO L186 Difference]: Start difference. First operand has 254 places, 268 transitions, 594 flow. Second operand 16 states and 4051 transitions. [2022-07-21 08:58:28,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 368 transitions, 1075 flow [2022-07-21 08:58:28,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 368 transitions, 1066 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-07-21 08:58:28,925 INFO L242 Difference]: Finished difference. Result has 281 places, 302 transitions, 845 flow [2022-07-21 08:58:28,925 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=845, PETRI_PLACES=281, PETRI_TRANSITIONS=302} [2022-07-21 08:58:28,926 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 25 predicate places. [2022-07-21 08:58:28,926 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 302 transitions, 845 flow [2022-07-21 08:58:28,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:28,927 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:28,927 INFO L200 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] [2022-07-21 08:58:28,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:58:28,928 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:58:28,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:28,928 INFO L85 PathProgramCache]: Analyzing trace with hash -193750373, now seen corresponding path program 1 times [2022-07-21 08:58:28,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:28,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350147402] [2022-07-21 08:58:28,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:28,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:28,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:28,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:28,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350147402] [2022-07-21 08:58:28,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350147402] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:28,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:28,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:58:28,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258620343] [2022-07-21 08:58:28,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:28,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:58:28,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:28,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:58:28,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:58:29,001 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 286 [2022-07-21 08:58:29,003 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 302 transitions, 845 flow. Second operand has 7 states, 7 states have (on average 255.85714285714286) internal successors, (1791), 7 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:29,003 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:29,003 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 286 [2022-07-21 08:58:29,004 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:29,340 INFO L129 PetriNetUnfolder]: 303/2359 cut-off events. [2022-07-21 08:58:29,340 INFO L130 PetriNetUnfolder]: For 1325/1560 co-relation queries the response was YES. [2022-07-21 08:58:29,355 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4121 conditions, 2359 events. 303/2359 cut-off events. For 1325/1560 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 23176 event pairs, 83 based on Foata normal form. 20/2205 useless extension candidates. Maximal degree in co-relation 4083. Up to 161 conditions per place. [2022-07-21 08:58:29,362 INFO L132 encePairwiseOnDemand]: 278/286 looper letters, 21 selfloop transitions, 1 changer transitions 20/322 dead transitions. [2022-07-21 08:58:29,362 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 322 transitions, 982 flow [2022-07-21 08:58:29,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:58:29,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:58:29,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2320 transitions. [2022-07-21 08:58:29,366 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9013209013209014 [2022-07-21 08:58:29,366 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2320 transitions. [2022-07-21 08:58:29,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2320 transitions. [2022-07-21 08:58:29,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:29,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2320 transitions. [2022-07-21 08:58:29,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 257.77777777777777) internal successors, (2320), 9 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:29,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 286.0) internal successors, (2860), 10 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:29,374 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 286.0) internal successors, (2860), 10 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:29,374 INFO L186 Difference]: Start difference. First operand has 281 places, 302 transitions, 845 flow. Second operand 9 states and 2320 transitions. [2022-07-21 08:58:29,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 322 transitions, 982 flow [2022-07-21 08:58:29,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 322 transitions, 978 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-21 08:58:29,386 INFO L242 Difference]: Finished difference. Result has 292 places, 302 transitions, 858 flow [2022-07-21 08:58:29,387 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=858, PETRI_PLACES=292, PETRI_TRANSITIONS=302} [2022-07-21 08:58:29,387 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 36 predicate places. [2022-07-21 08:58:29,388 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 302 transitions, 858 flow [2022-07-21 08:58:29,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 255.85714285714286) internal successors, (1791), 7 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:29,388 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:29,389 INFO L200 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] [2022-07-21 08:58:29,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:58:29,389 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:58:29,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:29,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1131960393, now seen corresponding path program 1 times [2022-07-21 08:58:29,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:29,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221477787] [2022-07-21 08:58:29,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:29,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:29,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:29,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:29,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221477787] [2022-07-21 08:58:29,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221477787] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:29,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:29,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:58:29,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152734112] [2022-07-21 08:58:29,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:29,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:58:29,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:29,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:58:29,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:58:29,438 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 286 [2022-07-21 08:58:29,439 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 302 transitions, 858 flow. Second operand has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:29,439 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:29,439 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 286 [2022-07-21 08:58:29,439 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:29,849 INFO L129 PetriNetUnfolder]: 506/4206 cut-off events. [2022-07-21 08:58:29,849 INFO L130 PetriNetUnfolder]: For 2284/2425 co-relation queries the response was YES. [2022-07-21 08:58:29,874 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7194 conditions, 4206 events. 506/4206 cut-off events. For 2284/2425 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 44929 event pairs, 111 based on Foata normal form. 51/3953 useless extension candidates. Maximal degree in co-relation 7168. Up to 305 conditions per place. [2022-07-21 08:58:29,885 INFO L132 encePairwiseOnDemand]: 276/286 looper letters, 18 selfloop transitions, 6 changer transitions 0/310 dead transitions. [2022-07-21 08:58:29,885 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 310 transitions, 926 flow [2022-07-21 08:58:29,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:58:29,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:58:29,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 811 transitions. [2022-07-21 08:58:29,887 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9452214452214452 [2022-07-21 08:58:29,887 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 811 transitions. [2022-07-21 08:58:29,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 811 transitions. [2022-07-21 08:58:29,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:29,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 811 transitions. [2022-07-21 08:58:29,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:29,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:29,890 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:29,890 INFO L186 Difference]: Start difference. First operand has 292 places, 302 transitions, 858 flow. Second operand 3 states and 811 transitions. [2022-07-21 08:58:29,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 310 transitions, 926 flow [2022-07-21 08:58:29,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 310 transitions, 913 flow, removed 6 selfloop flow, removed 7 redundant places. [2022-07-21 08:58:29,908 INFO L242 Difference]: Finished difference. Result has 283 places, 306 transitions, 893 flow [2022-07-21 08:58:29,909 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=893, PETRI_PLACES=283, PETRI_TRANSITIONS=306} [2022-07-21 08:58:29,909 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 27 predicate places. [2022-07-21 08:58:29,909 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 306 transitions, 893 flow [2022-07-21 08:58:29,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:29,910 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:29,910 INFO L200 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] [2022-07-21 08:58:29,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:58:29,910 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:58:29,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:29,911 INFO L85 PathProgramCache]: Analyzing trace with hash 393859959, now seen corresponding path program 2 times [2022-07-21 08:58:29,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:29,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632869166] [2022-07-21 08:58:29,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:29,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:29,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:29,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:29,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632869166] [2022-07-21 08:58:29,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632869166] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:29,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:29,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:58:29,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270441824] [2022-07-21 08:58:29,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:29,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:58:29,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:29,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:58:29,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:58:29,945 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 286 [2022-07-21 08:58:29,946 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 306 transitions, 893 flow. Second operand has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:29,946 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:29,946 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 286 [2022-07-21 08:58:29,946 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:30,233 INFO L129 PetriNetUnfolder]: 300/2558 cut-off events. [2022-07-21 08:58:30,234 INFO L130 PetriNetUnfolder]: For 1400/1564 co-relation queries the response was YES. [2022-07-21 08:58:30,246 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4460 conditions, 2558 events. 300/2558 cut-off events. For 1400/1564 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 23974 event pairs, 69 based on Foata normal form. 49/2440 useless extension candidates. Maximal degree in co-relation 3766. Up to 173 conditions per place. [2022-07-21 08:58:30,251 INFO L132 encePairwiseOnDemand]: 278/286 looper letters, 24 selfloop transitions, 4 changer transitions 0/314 dead transitions. [2022-07-21 08:58:30,252 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 314 transitions, 977 flow [2022-07-21 08:58:30,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:58:30,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:58:30,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 811 transitions. [2022-07-21 08:58:30,253 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9452214452214452 [2022-07-21 08:58:30,254 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 811 transitions. [2022-07-21 08:58:30,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 811 transitions. [2022-07-21 08:58:30,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:30,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 811 transitions. [2022-07-21 08:58:30,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:30,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:30,257 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:30,257 INFO L186 Difference]: Start difference. First operand has 283 places, 306 transitions, 893 flow. Second operand 3 states and 811 transitions. [2022-07-21 08:58:30,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 314 transitions, 977 flow [2022-07-21 08:58:30,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 314 transitions, 965 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:58:30,268 INFO L242 Difference]: Finished difference. Result has 285 places, 310 transitions, 929 flow [2022-07-21 08:58:30,269 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=929, PETRI_PLACES=285, PETRI_TRANSITIONS=310} [2022-07-21 08:58:30,269 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 29 predicate places. [2022-07-21 08:58:30,269 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 310 transitions, 929 flow [2022-07-21 08:58:30,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:30,270 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:30,270 INFO L200 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] [2022-07-21 08:58:30,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:58:30,270 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:58:30,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:30,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1181364599, now seen corresponding path program 1 times [2022-07-21 08:58:30,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:30,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750979582] [2022-07-21 08:58:30,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:30,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:30,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:30,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:30,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750979582] [2022-07-21 08:58:30,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750979582] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:30,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:30,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:58:30,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083003676] [2022-07-21 08:58:30,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:30,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:58:30,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:30,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:58:30,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:58:30,365 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-21 08:58:30,367 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 310 transitions, 929 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:30,367 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:30,367 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-21 08:58:30,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:31,082 INFO L129 PetriNetUnfolder]: 1089/4618 cut-off events. [2022-07-21 08:58:31,083 INFO L130 PetriNetUnfolder]: For 3676/3858 co-relation queries the response was YES. [2022-07-21 08:58:31,121 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10273 conditions, 4618 events. 1089/4618 cut-off events. For 3676/3858 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 51003 event pairs, 512 based on Foata normal form. 3/4401 useless extension candidates. Maximal degree in co-relation 8434. Up to 1532 conditions per place. [2022-07-21 08:58:31,193 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 109 selfloop transitions, 31 changer transitions 28/414 dead transitions. [2022-07-21 08:58:31,194 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 414 transitions, 1728 flow [2022-07-21 08:58:31,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 08:58:31,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 08:58:31,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6015 transitions. [2022-07-21 08:58:31,203 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8763111888111889 [2022-07-21 08:58:31,205 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6015 transitions. [2022-07-21 08:58:31,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6015 transitions. [2022-07-21 08:58:31,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:31,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6015 transitions. [2022-07-21 08:58:31,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 250.625) internal successors, (6015), 24 states have internal predecessors, (6015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:31,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:31,226 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:31,226 INFO L186 Difference]: Start difference. First operand has 285 places, 310 transitions, 929 flow. Second operand 24 states and 6015 transitions. [2022-07-21 08:58:31,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 414 transitions, 1728 flow [2022-07-21 08:58:31,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 414 transitions, 1716 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-07-21 08:58:31,251 INFO L242 Difference]: Finished difference. Result has 326 places, 339 transitions, 1237 flow [2022-07-21 08:58:31,252 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1237, PETRI_PLACES=326, PETRI_TRANSITIONS=339} [2022-07-21 08:58:31,252 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 70 predicate places. [2022-07-21 08:58:31,252 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 339 transitions, 1237 flow [2022-07-21 08:58:31,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:31,254 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:31,254 INFO L200 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] [2022-07-21 08:58:31,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:58:31,254 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:58:31,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:31,255 INFO L85 PathProgramCache]: Analyzing trace with hash 732473581, now seen corresponding path program 2 times [2022-07-21 08:58:31,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:31,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265588572] [2022-07-21 08:58:31,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:31,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:31,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:31,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:31,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265588572] [2022-07-21 08:58:31,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265588572] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:31,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:31,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:58:31,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489061945] [2022-07-21 08:58:31,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:31,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:58:31,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:31,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:58:31,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:58:31,340 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-21 08:58:31,341 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 339 transitions, 1237 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:31,342 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:31,342 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-21 08:58:31,342 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:32,102 INFO L129 PetriNetUnfolder]: 1156/4930 cut-off events. [2022-07-21 08:58:32,102 INFO L130 PetriNetUnfolder]: For 12704/12846 co-relation queries the response was YES. [2022-07-21 08:58:32,141 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13693 conditions, 4930 events. 1156/4930 cut-off events. For 12704/12846 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 54947 event pairs, 548 based on Foata normal form. 4/4676 useless extension candidates. Maximal degree in co-relation 13619. Up to 1640 conditions per place. [2022-07-21 08:58:32,156 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 119 selfloop transitions, 36 changer transitions 16/417 dead transitions. [2022-07-21 08:58:32,156 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 417 transitions, 2151 flow [2022-07-21 08:58:32,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:58:32,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 08:58:32,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4017 transitions. [2022-07-21 08:58:32,162 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8778409090909091 [2022-07-21 08:58:32,162 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4017 transitions. [2022-07-21 08:58:32,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4017 transitions. [2022-07-21 08:58:32,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:32,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4017 transitions. [2022-07-21 08:58:32,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 251.0625) internal successors, (4017), 16 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) [2022-07-21 08:58:32,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:32,174 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:32,174 INFO L186 Difference]: Start difference. First operand has 326 places, 339 transitions, 1237 flow. Second operand 16 states and 4017 transitions. [2022-07-21 08:58:32,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 417 transitions, 2151 flow [2022-07-21 08:58:32,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 417 transitions, 2004 flow, removed 71 selfloop flow, removed 3 redundant places. [2022-07-21 08:58:32,228 INFO L242 Difference]: Finished difference. Result has 347 places, 363 transitions, 1565 flow [2022-07-21 08:58:32,228 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=1128, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1565, PETRI_PLACES=347, PETRI_TRANSITIONS=363} [2022-07-21 08:58:32,229 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 91 predicate places. [2022-07-21 08:58:32,229 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 363 transitions, 1565 flow [2022-07-21 08:58:32,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:32,230 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:32,230 INFO L200 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] [2022-07-21 08:58:32,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:58:32,230 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:58:32,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:32,231 INFO L85 PathProgramCache]: Analyzing trace with hash -557087307, now seen corresponding path program 3 times [2022-07-21 08:58:32,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:32,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485020065] [2022-07-21 08:58:32,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:32,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:32,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:32,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:32,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:32,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485020065] [2022-07-21 08:58:32,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485020065] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:32,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:32,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:58:32,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604190248] [2022-07-21 08:58:32,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:32,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:58:32,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:32,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:58:32,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:58:32,313 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-21 08:58:32,315 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 363 transitions, 1565 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:32,315 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:32,315 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-21 08:58:32,315 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:33,458 INFO L129 PetriNetUnfolder]: 1234/5323 cut-off events. [2022-07-21 08:58:33,458 INFO L130 PetriNetUnfolder]: For 17328/17500 co-relation queries the response was YES. [2022-07-21 08:58:33,491 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15821 conditions, 5323 events. 1234/5323 cut-off events. For 17328/17500 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 60342 event pairs, 578 based on Foata normal form. 8/5071 useless extension candidates. Maximal degree in co-relation 15738. Up to 1768 conditions per place. [2022-07-21 08:58:33,507 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 128 selfloop transitions, 45 changer transitions 14/433 dead transitions. [2022-07-21 08:58:33,508 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 433 transitions, 2640 flow [2022-07-21 08:58:33,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:58:33,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 08:58:33,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4014 transitions. [2022-07-21 08:58:33,513 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8771853146853147 [2022-07-21 08:58:33,513 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4014 transitions. [2022-07-21 08:58:33,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4014 transitions. [2022-07-21 08:58:33,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:33,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4014 transitions. [2022-07-21 08:58:33,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 250.875) internal successors, (4014), 16 states have internal predecessors, (4014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:33,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:33,525 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:33,525 INFO L186 Difference]: Start difference. First operand has 347 places, 363 transitions, 1565 flow. Second operand 16 states and 4014 transitions. [2022-07-21 08:58:33,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 433 transitions, 2640 flow [2022-07-21 08:58:33,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 433 transitions, 2314 flow, removed 163 selfloop flow, removed 2 redundant places. [2022-07-21 08:58:33,681 INFO L242 Difference]: Finished difference. Result has 368 places, 383 transitions, 1750 flow [2022-07-21 08:58:33,682 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=1373, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1750, PETRI_PLACES=368, PETRI_TRANSITIONS=383} [2022-07-21 08:58:33,682 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 112 predicate places. [2022-07-21 08:58:33,683 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 383 transitions, 1750 flow [2022-07-21 08:58:33,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:33,683 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:33,683 INFO L200 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] [2022-07-21 08:58:33,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:58:33,684 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:58:33,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:33,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1371012535, now seen corresponding path program 4 times [2022-07-21 08:58:33,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:33,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657891321] [2022-07-21 08:58:33,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:33,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:33,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:33,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:33,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657891321] [2022-07-21 08:58:33,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657891321] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:33,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:33,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:58:33,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244299097] [2022-07-21 08:58:33,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:33,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:58:33,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:33,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:58:33,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:58:33,817 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-21 08:58:33,819 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 383 transitions, 1750 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:33,819 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:33,819 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-21 08:58:33,819 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:34,943 INFO L129 PetriNetUnfolder]: 1377/5982 cut-off events. [2022-07-21 08:58:34,944 INFO L130 PetriNetUnfolder]: For 16689/16882 co-relation queries the response was YES. [2022-07-21 08:58:34,979 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17550 conditions, 5982 events. 1377/5982 cut-off events. For 16689/16882 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 69818 event pairs, 653 based on Foata normal form. 3/5717 useless extension candidates. Maximal degree in co-relation 17458. Up to 1822 conditions per place. [2022-07-21 08:58:34,994 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 152 selfloop transitions, 50 changer transitions 23/471 dead transitions. [2022-07-21 08:58:34,995 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 471 transitions, 3092 flow [2022-07-21 08:58:34,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 08:58:34,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-21 08:58:34,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5261 transitions. [2022-07-21 08:58:35,001 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.875957375957376 [2022-07-21 08:58:35,001 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5261 transitions. [2022-07-21 08:58:35,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5261 transitions. [2022-07-21 08:58:35,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:35,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5261 transitions. [2022-07-21 08:58:35,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 250.52380952380952) internal successors, (5261), 21 states have internal predecessors, (5261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:35,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:35,014 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:35,015 INFO L186 Difference]: Start difference. First operand has 368 places, 383 transitions, 1750 flow. Second operand 21 states and 5261 transitions. [2022-07-21 08:58:35,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 471 transitions, 3092 flow [2022-07-21 08:58:35,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 471 transitions, 2948 flow, removed 64 selfloop flow, removed 3 redundant places. [2022-07-21 08:58:35,103 INFO L242 Difference]: Finished difference. Result has 398 places, 417 transitions, 2335 flow [2022-07-21 08:58:35,104 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=1646, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2335, PETRI_PLACES=398, PETRI_TRANSITIONS=417} [2022-07-21 08:58:35,104 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 142 predicate places. [2022-07-21 08:58:35,104 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 417 transitions, 2335 flow [2022-07-21 08:58:35,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:35,105 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:35,105 INFO L200 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] [2022-07-21 08:58:35,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 08:58:35,106 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:58:35,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:35,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1095441069, now seen corresponding path program 5 times [2022-07-21 08:58:35,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:35,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574674448] [2022-07-21 08:58:35,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:35,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:35,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:35,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:35,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574674448] [2022-07-21 08:58:35,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574674448] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:35,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:35,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:58:35,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724666490] [2022-07-21 08:58:35,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:35,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:58:35,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:35,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:58:35,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:58:35,224 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-21 08:58:35,226 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 417 transitions, 2335 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:35,226 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:35,226 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-21 08:58:35,226 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:36,386 INFO L129 PetriNetUnfolder]: 1407/6138 cut-off events. [2022-07-21 08:58:36,386 INFO L130 PetriNetUnfolder]: For 24729/24901 co-relation queries the response was YES. [2022-07-21 08:58:36,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19542 conditions, 6138 events. 1407/6138 cut-off events. For 24729/24901 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 72650 event pairs, 601 based on Foata normal form. 4/5885 useless extension candidates. Maximal degree in co-relation 19437. Up to 1778 conditions per place. [2022-07-21 08:58:36,447 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 170 selfloop transitions, 60 changer transitions 22/498 dead transitions. [2022-07-21 08:58:36,447 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 498 transitions, 3741 flow [2022-07-21 08:58:36,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:58:36,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 08:58:36,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5012 transitions. [2022-07-21 08:58:36,451 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8762237762237762 [2022-07-21 08:58:36,451 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5012 transitions. [2022-07-21 08:58:36,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5012 transitions. [2022-07-21 08:58:36,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:36,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5012 transitions. [2022-07-21 08:58:36,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 250.6) internal successors, (5012), 20 states have internal predecessors, (5012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:36,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:36,463 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:36,463 INFO L186 Difference]: Start difference. First operand has 398 places, 417 transitions, 2335 flow. Second operand 20 states and 5012 transitions. [2022-07-21 08:58:36,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 498 transitions, 3741 flow [2022-07-21 08:58:36,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 498 transitions, 3403 flow, removed 169 selfloop flow, removed 2 redundant places. [2022-07-21 08:58:36,725 INFO L242 Difference]: Finished difference. Result has 428 places, 449 transitions, 2779 flow [2022-07-21 08:58:36,726 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=2081, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2779, PETRI_PLACES=428, PETRI_TRANSITIONS=449} [2022-07-21 08:58:36,726 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 172 predicate places. [2022-07-21 08:58:36,726 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 449 transitions, 2779 flow [2022-07-21 08:58:36,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:36,727 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:36,727 INFO L200 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] [2022-07-21 08:58:36,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 08:58:36,728 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:58:36,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:36,728 INFO L85 PathProgramCache]: Analyzing trace with hash 373473445, now seen corresponding path program 6 times [2022-07-21 08:58:36,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:36,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389644081] [2022-07-21 08:58:36,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:36,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:36,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:36,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:36,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389644081] [2022-07-21 08:58:36,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389644081] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:36,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:36,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:58:36,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220999874] [2022-07-21 08:58:36,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:36,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:58:36,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:36,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:58:36,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:58:36,826 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-21 08:58:36,828 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 449 transitions, 2779 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:36,828 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:36,828 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-21 08:58:36,828 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:38,017 INFO L129 PetriNetUnfolder]: 1452/6380 cut-off events. [2022-07-21 08:58:38,017 INFO L130 PetriNetUnfolder]: For 30188/30380 co-relation queries the response was YES. [2022-07-21 08:58:38,087 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20880 conditions, 6380 events. 1452/6380 cut-off events. For 30188/30380 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 76484 event pairs, 511 based on Foata normal form. 4/6138 useless extension candidates. Maximal degree in co-relation 20761. Up to 1492 conditions per place. [2022-07-21 08:58:38,109 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 200 selfloop transitions, 103 changer transitions 26/575 dead transitions. [2022-07-21 08:58:38,109 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 575 transitions, 4587 flow [2022-07-21 08:58:38,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 08:58:38,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 08:58:38,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6012 transitions. [2022-07-21 08:58:38,116 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8758741258741258 [2022-07-21 08:58:38,116 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6012 transitions. [2022-07-21 08:58:38,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6012 transitions. [2022-07-21 08:58:38,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:38,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6012 transitions. [2022-07-21 08:58:38,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 250.5) internal successors, (6012), 24 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:38,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:38,132 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:38,132 INFO L186 Difference]: Start difference. First operand has 428 places, 449 transitions, 2779 flow. Second operand 24 states and 6012 transitions. [2022-07-21 08:58:38,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 575 transitions, 4587 flow [2022-07-21 08:58:38,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 575 transitions, 4273 flow, removed 157 selfloop flow, removed 2 redundant places. [2022-07-21 08:58:38,357 INFO L242 Difference]: Finished difference. Result has 466 places, 475 transitions, 3279 flow [2022-07-21 08:58:38,358 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=2543, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3279, PETRI_PLACES=466, PETRI_TRANSITIONS=475} [2022-07-21 08:58:38,359 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 210 predicate places. [2022-07-21 08:58:38,359 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 475 transitions, 3279 flow [2022-07-21 08:58:38,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:38,360 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:38,360 INFO L200 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] [2022-07-21 08:58:38,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:58:38,360 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:58:38,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:38,361 INFO L85 PathProgramCache]: Analyzing trace with hash 595245651, now seen corresponding path program 7 times [2022-07-21 08:58:38,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:38,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543752331] [2022-07-21 08:58:38,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:38,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:38,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:38,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:38,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543752331] [2022-07-21 08:58:38,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543752331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:38,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:38,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:58:38,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189369427] [2022-07-21 08:58:38,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:38,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:58:38,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:38,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:58:38,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:58:38,484 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-21 08:58:38,486 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 475 transitions, 3279 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:38,486 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:38,486 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-21 08:58:38,486 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:39,986 INFO L129 PetriNetUnfolder]: 1500/6821 cut-off events. [2022-07-21 08:58:39,987 INFO L130 PetriNetUnfolder]: For 36692/37024 co-relation queries the response was YES. [2022-07-21 08:58:40,097 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22835 conditions, 6821 events. 1500/6821 cut-off events. For 36692/37024 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 83395 event pairs, 587 based on Foata normal form. 42/6608 useless extension candidates. Maximal degree in co-relation 22698. Up to 1954 conditions per place. [2022-07-21 08:58:40,124 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 188 selfloop transitions, 97 changer transitions 24/555 dead transitions. [2022-07-21 08:58:40,124 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 555 transitions, 4868 flow [2022-07-21 08:58:40,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 08:58:40,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-21 08:58:40,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5507 transitions. [2022-07-21 08:58:40,130 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8752383979656707 [2022-07-21 08:58:40,130 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5507 transitions. [2022-07-21 08:58:40,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5507 transitions. [2022-07-21 08:58:40,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:40,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5507 transitions. [2022-07-21 08:58:40,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 250.3181818181818) internal successors, (5507), 22 states have internal predecessors, (5507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:40,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:40,145 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:40,146 INFO L186 Difference]: Start difference. First operand has 466 places, 475 transitions, 3279 flow. Second operand 22 states and 5507 transitions. [2022-07-21 08:58:40,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 555 transitions, 4868 flow [2022-07-21 08:58:40,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 555 transitions, 4804 flow, removed 29 selfloop flow, removed 3 redundant places. [2022-07-21 08:58:40,445 INFO L242 Difference]: Finished difference. Result has 495 places, 499 transitions, 3945 flow [2022-07-21 08:58:40,446 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=3221, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3945, PETRI_PLACES=495, PETRI_TRANSITIONS=499} [2022-07-21 08:58:40,447 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 239 predicate places. [2022-07-21 08:58:40,447 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 499 transitions, 3945 flow [2022-07-21 08:58:40,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:40,448 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:40,448 INFO L200 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] [2022-07-21 08:58:40,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:58:40,448 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:58:40,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:40,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1428097059, now seen corresponding path program 8 times [2022-07-21 08:58:40,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:40,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476553183] [2022-07-21 08:58:40,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:40,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:40,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:40,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:40,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476553183] [2022-07-21 08:58:40,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476553183] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:40,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:40,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:58:40,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726661024] [2022-07-21 08:58:40,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:40,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:58:40,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:40,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:58:40,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:58:40,529 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-21 08:58:40,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 499 transitions, 3945 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:40,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:40,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-21 08:58:40,530 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:41,984 INFO L129 PetriNetUnfolder]: 1485/6506 cut-off events. [2022-07-21 08:58:41,984 INFO L130 PetriNetUnfolder]: For 42522/42730 co-relation queries the response was YES. [2022-07-21 08:58:42,084 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23611 conditions, 6506 events. 1485/6506 cut-off events. For 42522/42730 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 78066 event pairs, 586 based on Foata normal form. 23/6271 useless extension candidates. Maximal degree in co-relation 23463. Up to 2015 conditions per place. [2022-07-21 08:58:42,108 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 187 selfloop transitions, 103 changer transitions 23/559 dead transitions. [2022-07-21 08:58:42,108 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 559 transitions, 5334 flow [2022-07-21 08:58:42,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 08:58:42,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 08:58:42,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4511 transitions. [2022-07-21 08:58:42,112 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8762626262626263 [2022-07-21 08:58:42,113 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4511 transitions. [2022-07-21 08:58:42,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4511 transitions. [2022-07-21 08:58:42,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:42,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4511 transitions. [2022-07-21 08:58:42,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.61111111111111) internal successors, (4511), 18 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:42,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:42,123 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:42,123 INFO L186 Difference]: Start difference. First operand has 495 places, 499 transitions, 3945 flow. Second operand 18 states and 4511 transitions. [2022-07-21 08:58:42,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 559 transitions, 5334 flow [2022-07-21 08:58:42,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 559 transitions, 5114 flow, removed 102 selfloop flow, removed 4 redundant places. [2022-07-21 08:58:42,464 INFO L242 Difference]: Finished difference. Result has 512 places, 514 transitions, 4379 flow [2022-07-21 08:58:42,465 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=3746, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4379, PETRI_PLACES=512, PETRI_TRANSITIONS=514} [2022-07-21 08:58:42,466 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 256 predicate places. [2022-07-21 08:58:42,466 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 514 transitions, 4379 flow [2022-07-21 08:58:42,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:42,467 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:42,467 INFO L200 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] [2022-07-21 08:58:42,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 08:58:42,467 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:58:42,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:42,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1079080099, now seen corresponding path program 9 times [2022-07-21 08:58:42,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:42,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819700759] [2022-07-21 08:58:42,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:42,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:42,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:42,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:42,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819700759] [2022-07-21 08:58:42,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819700759] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:42,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:42,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:58:42,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549539364] [2022-07-21 08:58:42,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:42,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:58:42,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:42,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:58:42,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:58:42,544 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-21 08:58:42,545 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 514 transitions, 4379 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:42,545 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:42,546 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-21 08:58:42,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:44,056 INFO L129 PetriNetUnfolder]: 1536/7064 cut-off events. [2022-07-21 08:58:44,057 INFO L130 PetriNetUnfolder]: For 48851/49107 co-relation queries the response was YES. [2022-07-21 08:58:44,168 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25480 conditions, 7064 events. 1536/7064 cut-off events. For 48851/49107 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 87286 event pairs, 647 based on Foata normal form. 3/6791 useless extension candidates. Maximal degree in co-relation 25329. Up to 2069 conditions per place. [2022-07-21 08:58:44,195 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 209 selfloop transitions, 111 changer transitions 19/585 dead transitions. [2022-07-21 08:58:44,195 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 585 transitions, 6045 flow [2022-07-21 08:58:44,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:58:44,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 08:58:44,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5008 transitions. [2022-07-21 08:58:44,199 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8755244755244755 [2022-07-21 08:58:44,200 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5008 transitions. [2022-07-21 08:58:44,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5008 transitions. [2022-07-21 08:58:44,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:44,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5008 transitions. [2022-07-21 08:58:44,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 250.4) internal successors, (5008), 20 states have internal predecessors, (5008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:44,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:44,210 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:44,210 INFO L186 Difference]: Start difference. First operand has 512 places, 514 transitions, 4379 flow. Second operand 20 states and 5008 transitions. [2022-07-21 08:58:44,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 585 transitions, 6045 flow [2022-07-21 08:58:44,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 585 transitions, 5647 flow, removed 167 selfloop flow, removed 7 redundant places. [2022-07-21 08:58:44,613 INFO L242 Difference]: Finished difference. Result has 536 places, 541 transitions, 4998 flow [2022-07-21 08:58:44,614 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=4102, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4998, PETRI_PLACES=536, PETRI_TRANSITIONS=541} [2022-07-21 08:58:44,614 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 280 predicate places. [2022-07-21 08:58:44,614 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 541 transitions, 4998 flow [2022-07-21 08:58:44,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:44,615 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:44,615 INFO L200 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] [2022-07-21 08:58:44,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 08:58:44,615 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:58:44,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:44,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1099183391, now seen corresponding path program 10 times [2022-07-21 08:58:44,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:44,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577954179] [2022-07-21 08:58:44,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:44,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:44,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:44,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:44,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:44,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577954179] [2022-07-21 08:58:44,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577954179] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:44,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:44,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:58:44,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452183160] [2022-07-21 08:58:44,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:44,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:58:44,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:44,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:58:44,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:58:44,712 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-21 08:58:44,714 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 541 transitions, 4998 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:44,714 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:44,714 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-21 08:58:44,714 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:46,643 INFO L129 PetriNetUnfolder]: 1578/7316 cut-off events. [2022-07-21 08:58:46,643 INFO L130 PetriNetUnfolder]: For 42205/42413 co-relation queries the response was YES. [2022-07-21 08:58:46,710 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26764 conditions, 7316 events. 1578/7316 cut-off events. For 42205/42413 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 91296 event pairs, 609 based on Foata normal form. 12/7070 useless extension candidates. Maximal degree in co-relation 26604. Up to 2102 conditions per place. [2022-07-21 08:58:46,730 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 237 selfloop transitions, 102 changer transitions 15/600 dead transitions. [2022-07-21 08:58:46,730 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 600 transitions, 6518 flow [2022-07-21 08:58:46,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 08:58:46,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 08:58:46,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4265 transitions. [2022-07-21 08:58:46,733 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8772110242698478 [2022-07-21 08:58:46,733 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4265 transitions. [2022-07-21 08:58:46,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4265 transitions. [2022-07-21 08:58:46,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:46,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4265 transitions. [2022-07-21 08:58:46,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 250.88235294117646) internal successors, (4265), 17 states have internal predecessors, (4265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,741 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,741 INFO L186 Difference]: Start difference. First operand has 536 places, 541 transitions, 4998 flow. Second operand 17 states and 4265 transitions. [2022-07-21 08:58:46,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 600 transitions, 6518 flow [2022-07-21 08:58:47,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 600 transitions, 6258 flow, removed 107 selfloop flow, removed 3 redundant places. [2022-07-21 08:58:47,051 INFO L242 Difference]: Finished difference. Result has 553 places, 563 transitions, 5497 flow [2022-07-21 08:58:47,052 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=4819, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5497, PETRI_PLACES=553, PETRI_TRANSITIONS=563} [2022-07-21 08:58:47,052 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 297 predicate places. [2022-07-21 08:58:47,052 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 563 transitions, 5497 flow [2022-07-21 08:58:47,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:47,053 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:47,053 INFO L200 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] [2022-07-21 08:58:47,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 08:58:47,053 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:58:47,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:47,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1336984687, now seen corresponding path program 11 times [2022-07-21 08:58:47,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:47,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12401083] [2022-07-21 08:58:47,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:47,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:47,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:47,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:47,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12401083] [2022-07-21 08:58:47,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12401083] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:47,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:47,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:58:47,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778879760] [2022-07-21 08:58:47,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:47,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:58:47,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:47,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:58:47,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:58:47,148 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-21 08:58:47,149 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 563 transitions, 5497 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:47,149 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:47,149 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-21 08:58:47,149 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:48,746 INFO L129 PetriNetUnfolder]: 1628/7476 cut-off events. [2022-07-21 08:58:48,746 INFO L130 PetriNetUnfolder]: For 41207/41471 co-relation queries the response was YES. [2022-07-21 08:58:48,835 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27622 conditions, 7476 events. 1628/7476 cut-off events. For 41207/41471 co-relation queries the response was YES. Maximal size of possible extension queue 716. Compared 93842 event pairs, 665 based on Foata normal form. 3/7205 useless extension candidates. Maximal degree in co-relation 27458. Up to 2134 conditions per place. [2022-07-21 08:58:48,857 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 235 selfloop transitions, 125 changer transitions 16/622 dead transitions. [2022-07-21 08:58:48,857 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 622 transitions, 6996 flow [2022-07-21 08:58:48,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 08:58:48,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 08:58:48,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4265 transitions. [2022-07-21 08:58:48,881 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8772110242698478 [2022-07-21 08:58:48,881 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4265 transitions. [2022-07-21 08:58:48,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4265 transitions. [2022-07-21 08:58:48,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:48,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4265 transitions. [2022-07-21 08:58:48,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 250.88235294117646) internal successors, (4265), 17 states have internal predecessors, (4265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:48,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:48,913 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:48,913 INFO L186 Difference]: Start difference. First operand has 553 places, 563 transitions, 5497 flow. Second operand 17 states and 4265 transitions. [2022-07-21 08:58:48,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 622 transitions, 6996 flow [2022-07-21 08:58:49,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 622 transitions, 6835 flow, removed 55 selfloop flow, removed 3 redundant places. [2022-07-21 08:58:49,299 INFO L242 Difference]: Finished difference. Result has 572 places, 584 transitions, 6126 flow [2022-07-21 08:58:49,300 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=5357, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6126, PETRI_PLACES=572, PETRI_TRANSITIONS=584} [2022-07-21 08:58:49,301 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 316 predicate places. [2022-07-21 08:58:49,301 INFO L495 AbstractCegarLoop]: Abstraction has has 572 places, 584 transitions, 6126 flow [2022-07-21 08:58:49,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:49,301 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:49,301 INFO L200 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] [2022-07-21 08:58:49,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 08:58:49,302 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:58:49,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:49,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1288177509, now seen corresponding path program 12 times [2022-07-21 08:58:49,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:49,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834216252] [2022-07-21 08:58:49,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:49,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:49,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:49,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:49,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:49,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834216252] [2022-07-21 08:58:49,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834216252] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:49,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:49,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:58:49,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052606055] [2022-07-21 08:58:49,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:49,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:58:49,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:49,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:58:49,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:58:49,399 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-21 08:58:49,400 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 584 transitions, 6126 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:49,401 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:49,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-21 08:58:49,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:51,620 INFO L129 PetriNetUnfolder]: 1633/7803 cut-off events. [2022-07-21 08:58:51,633 INFO L130 PetriNetUnfolder]: For 44343/44595 co-relation queries the response was YES. [2022-07-21 08:58:51,716 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28609 conditions, 7803 events. 1633/7803 cut-off events. For 44343/44595 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 99701 event pairs, 660 based on Foata normal form. 3/7534 useless extension candidates. Maximal degree in co-relation 28439. Up to 2179 conditions per place. [2022-07-21 08:58:51,736 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 233 selfloop transitions, 130 changer transitions 20/629 dead transitions. [2022-07-21 08:58:51,736 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 629 transitions, 7379 flow [2022-07-21 08:58:51,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 08:58:51,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 08:58:51,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4511 transitions. [2022-07-21 08:58:51,739 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8762626262626263 [2022-07-21 08:58:51,739 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4511 transitions. [2022-07-21 08:58:51,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4511 transitions. [2022-07-21 08:58:51,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:51,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4511 transitions. [2022-07-21 08:58:51,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.61111111111111) internal successors, (4511), 18 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:51,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:51,746 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:51,747 INFO L186 Difference]: Start difference. First operand has 572 places, 584 transitions, 6126 flow. Second operand 18 states and 4511 transitions. [2022-07-21 08:58:51,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 629 transitions, 7379 flow [2022-07-21 08:58:52,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 629 transitions, 7247 flow, removed 66 selfloop flow, removed 2 redundant places. [2022-07-21 08:58:52,080 INFO L242 Difference]: Finished difference. Result has 590 places, 594 transitions, 6525 flow [2022-07-21 08:58:52,081 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=6010, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6525, PETRI_PLACES=590, PETRI_TRANSITIONS=594} [2022-07-21 08:58:52,081 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 334 predicate places. [2022-07-21 08:58:52,081 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 594 transitions, 6525 flow [2022-07-21 08:58:52,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:52,082 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:52,082 INFO L200 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] [2022-07-21 08:58:52,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 08:58:52,082 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:58:52,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:52,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1677599557, now seen corresponding path program 13 times [2022-07-21 08:58:52,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:52,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172169781] [2022-07-21 08:58:52,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:52,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:52,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:52,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:52,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:52,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172169781] [2022-07-21 08:58:52,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172169781] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:52,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:52,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:58:52,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92823391] [2022-07-21 08:58:52,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:52,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:58:52,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:52,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:58:52,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:58:52,160 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-21 08:58:52,161 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 594 transitions, 6525 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:52,161 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:52,161 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-21 08:58:52,162 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:53,999 INFO L129 PetriNetUnfolder]: 1617/7816 cut-off events. [2022-07-21 08:58:53,999 INFO L130 PetriNetUnfolder]: For 44887/45092 co-relation queries the response was YES. [2022-07-21 08:58:54,080 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29021 conditions, 7816 events. 1617/7816 cut-off events. For 44887/45092 co-relation queries the response was YES. Maximal size of possible extension queue 754. Compared 100313 event pairs, 614 based on Foata normal form. 12/7571 useless extension candidates. Maximal degree in co-relation 28847. Up to 2169 conditions per place. [2022-07-21 08:58:54,099 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 247 selfloop transitions, 119 changer transitions 24/636 dead transitions. [2022-07-21 08:58:54,099 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 636 transitions, 7702 flow [2022-07-21 08:58:54,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 08:58:54,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 08:58:54,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4515 transitions. [2022-07-21 08:58:54,102 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.877039627039627 [2022-07-21 08:58:54,102 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4515 transitions. [2022-07-21 08:58:54,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4515 transitions. [2022-07-21 08:58:54,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:54,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4515 transitions. [2022-07-21 08:58:54,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.83333333333334) internal successors, (4515), 18 states have internal predecessors, (4515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:54,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:54,109 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:54,109 INFO L186 Difference]: Start difference. First operand has 590 places, 594 transitions, 6525 flow. Second operand 18 states and 4515 transitions. [2022-07-21 08:58:54,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 636 transitions, 7702 flow [2022-07-21 08:58:54,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 636 transitions, 7554 flow, removed 38 selfloop flow, removed 7 redundant places. [2022-07-21 08:58:54,489 INFO L242 Difference]: Finished difference. Result has 603 places, 601 transitions, 6816 flow [2022-07-21 08:58:54,489 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=6379, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6816, PETRI_PLACES=603, PETRI_TRANSITIONS=601} [2022-07-21 08:58:54,490 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 347 predicate places. [2022-07-21 08:58:54,490 INFO L495 AbstractCegarLoop]: Abstraction has has 603 places, 601 transitions, 6816 flow [2022-07-21 08:58:54,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:54,490 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:54,491 INFO L200 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] [2022-07-21 08:58:54,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 08:58:54,491 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:58:54,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:54,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1392374027, now seen corresponding path program 14 times [2022-07-21 08:58:54,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:54,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234521645] [2022-07-21 08:58:54,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:54,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:54,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:54,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:54,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234521645] [2022-07-21 08:58:54,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234521645] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:54,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:54,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:58:54,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356646997] [2022-07-21 08:58:54,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:54,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:58:54,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:54,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:58:54,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:58:54,572 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-21 08:58:54,573 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 601 transitions, 6816 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:54,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:54,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-21 08:58:54,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:56,504 INFO L129 PetriNetUnfolder]: 1675/7954 cut-off events. [2022-07-21 08:58:56,504 INFO L130 PetriNetUnfolder]: For 50888/51093 co-relation queries the response was YES. [2022-07-21 08:58:56,600 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30534 conditions, 7954 events. 1675/7954 cut-off events. For 50888/51093 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 102113 event pairs, 587 based on Foata normal form. 4/7700 useless extension candidates. Maximal degree in co-relation 30361. Up to 2053 conditions per place. [2022-07-21 08:58:56,624 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 255 selfloop transitions, 156 changer transitions 23/680 dead transitions. [2022-07-21 08:58:56,625 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 680 transitions, 8591 flow [2022-07-21 08:58:56,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 08:58:56,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-21 08:58:56,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5505 transitions. [2022-07-21 08:58:56,629 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8749205340114431 [2022-07-21 08:58:56,629 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5505 transitions. [2022-07-21 08:58:56,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5505 transitions. [2022-07-21 08:58:56,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:56,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5505 transitions. [2022-07-21 08:58:56,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 250.22727272727272) internal successors, (5505), 22 states have internal predecessors, (5505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:56,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:56,638 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:56,638 INFO L186 Difference]: Start difference. First operand has 603 places, 601 transitions, 6816 flow. Second operand 22 states and 5505 transitions. [2022-07-21 08:58:56,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 680 transitions, 8591 flow [2022-07-21 08:58:57,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 616 places, 680 transitions, 8472 flow, removed 52 selfloop flow, removed 6 redundant places. [2022-07-21 08:58:57,057 INFO L242 Difference]: Finished difference. Result has 630 places, 629 transitions, 7633 flow [2022-07-21 08:58:57,057 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=6699, PETRI_DIFFERENCE_MINUEND_PLACES=595, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7633, PETRI_PLACES=630, PETRI_TRANSITIONS=629} [2022-07-21 08:58:57,058 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 374 predicate places. [2022-07-21 08:58:57,058 INFO L495 AbstractCegarLoop]: Abstraction has has 630 places, 629 transitions, 7633 flow [2022-07-21 08:58:57,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:57,059 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:57,059 INFO L200 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] [2022-07-21 08:58:57,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 08:58:57,059 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:58:57,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:57,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1289975747, now seen corresponding path program 15 times [2022-07-21 08:58:57,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:57,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395321473] [2022-07-21 08:58:57,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:57,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:57,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:57,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:57,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395321473] [2022-07-21 08:58:57,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395321473] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:57,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:57,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:58:57,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069088236] [2022-07-21 08:58:57,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:57,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:58:57,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:57,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:58:57,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:58:57,136 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-21 08:58:57,138 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 630 places, 629 transitions, 7633 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:57,138 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:57,138 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-21 08:58:57,138 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:59,290 INFO L129 PetriNetUnfolder]: 1709/8169 cut-off events. [2022-07-21 08:58:59,290 INFO L130 PetriNetUnfolder]: For 58457/58662 co-relation queries the response was YES. [2022-07-21 08:58:59,380 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32546 conditions, 8169 events. 1709/8169 cut-off events. For 58457/58662 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 105382 event pairs, 599 based on Foata normal form. 4/7905 useless extension candidates. Maximal degree in co-relation 32364. Up to 2092 conditions per place. [2022-07-21 08:58:59,400 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 320 selfloop transitions, 111 changer transitions 21/698 dead transitions. [2022-07-21 08:58:59,401 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 648 places, 698 transitions, 9541 flow [2022-07-21 08:58:59,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 08:58:59,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-21 08:58:59,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5258 transitions. [2022-07-21 08:58:59,403 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8754578754578755 [2022-07-21 08:58:59,403 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5258 transitions. [2022-07-21 08:58:59,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5258 transitions. [2022-07-21 08:58:59,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:59,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5258 transitions. [2022-07-21 08:58:59,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 250.38095238095238) internal successors, (5258), 21 states have internal predecessors, (5258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:59,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:59,411 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:59,411 INFO L186 Difference]: Start difference. First operand has 630 places, 629 transitions, 7633 flow. Second operand 21 states and 5258 transitions. [2022-07-21 08:58:59,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 648 places, 698 transitions, 9541 flow [2022-07-21 08:58:59,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 646 places, 698 transitions, 9443 flow, removed 49 selfloop flow, removed 2 redundant places. [2022-07-21 08:58:59,878 INFO L242 Difference]: Finished difference. Result has 660 places, 655 transitions, 8522 flow [2022-07-21 08:58:59,878 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=7537, PETRI_DIFFERENCE_MINUEND_PLACES=626, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=8522, PETRI_PLACES=660, PETRI_TRANSITIONS=655} [2022-07-21 08:58:59,879 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 404 predicate places. [2022-07-21 08:58:59,879 INFO L495 AbstractCegarLoop]: Abstraction has has 660 places, 655 transitions, 8522 flow [2022-07-21 08:58:59,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:59,879 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:59,880 INFO L200 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] [2022-07-21 08:58:59,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 08:58:59,880 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:58:59,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:59,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1950041, now seen corresponding path program 16 times [2022-07-21 08:58:59,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:59,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663849713] [2022-07-21 08:58:59,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:59,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:59,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:59,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:59,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663849713] [2022-07-21 08:58:59,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663849713] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:59,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:59,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:58:59,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865129947] [2022-07-21 08:58:59,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:59,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:58:59,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:59,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:58:59,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:58:59,950 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-21 08:58:59,951 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 660 places, 655 transitions, 8522 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:59,951 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:59,951 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-21 08:58:59,952 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:02,227 INFO L129 PetriNetUnfolder]: 1708/8283 cut-off events. [2022-07-21 08:59:02,227 INFO L130 PetriNetUnfolder]: For 64535/64740 co-relation queries the response was YES. [2022-07-21 08:59:02,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33597 conditions, 8283 events. 1708/8283 cut-off events. For 64535/64740 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 107483 event pairs, 597 based on Foata normal form. 4/8027 useless extension candidates. Maximal degree in co-relation 33402. Up to 2145 conditions per place. [2022-07-21 08:59:02,397 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 272 selfloop transitions, 166 changer transitions 23/707 dead transitions. [2022-07-21 08:59:02,397 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 675 places, 707 transitions, 9976 flow [2022-07-21 08:59:02,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 08:59:02,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 08:59:02,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4511 transitions. [2022-07-21 08:59:02,428 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8762626262626263 [2022-07-21 08:59:02,428 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4511 transitions. [2022-07-21 08:59:02,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4511 transitions. [2022-07-21 08:59:02,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:02,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4511 transitions. [2022-07-21 08:59:02,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.61111111111111) internal successors, (4511), 18 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:02,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:02,434 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:02,434 INFO L186 Difference]: Start difference. First operand has 660 places, 655 transitions, 8522 flow. Second operand 18 states and 4511 transitions. [2022-07-21 08:59:02,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 675 places, 707 transitions, 9976 flow [2022-07-21 08:59:03,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 673 places, 707 transitions, 9738 flow, removed 119 selfloop flow, removed 2 redundant places. [2022-07-21 08:59:03,040 INFO L242 Difference]: Finished difference. Result has 680 places, 664 transitions, 8881 flow [2022-07-21 08:59:03,041 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=8286, PETRI_DIFFERENCE_MINUEND_PLACES=656, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8881, PETRI_PLACES=680, PETRI_TRANSITIONS=664} [2022-07-21 08:59:03,041 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 424 predicate places. [2022-07-21 08:59:03,041 INFO L495 AbstractCegarLoop]: Abstraction has has 680 places, 664 transitions, 8881 flow [2022-07-21 08:59:03,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:03,042 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:03,042 INFO L200 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] [2022-07-21 08:59:03,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 08:59:03,042 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:03,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:03,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1944847779, now seen corresponding path program 17 times [2022-07-21 08:59:03,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:03,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081601625] [2022-07-21 08:59:03,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:03,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:03,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:03,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:03,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081601625] [2022-07-21 08:59:03,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081601625] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:03,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:03,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:59:03,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006772755] [2022-07-21 08:59:03,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:03,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:59:03,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:03,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:59:03,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:59:03,168 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-21 08:59:03,169 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 680 places, 664 transitions, 8881 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:03,170 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:03,170 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-21 08:59:03,170 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand