./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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-exp-term-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 79419a4ba87d66b20bd1eac3a57771b6df78d8c052d6832c2c2f61b321d58321 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:25:38,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:25:38,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:25:38,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:25:38,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:25:38,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:25:38,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:25:38,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:25:38,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:25:38,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:25:38,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:25:38,046 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:25:38,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:25:38,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:25:38,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:25:38,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:25:38,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:25:38,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:25:38,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:25:38,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:25:38,058 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:25:38,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:25:38,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:25:38,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:25:38,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:25:38,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:25:38,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:25:38,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:25:38,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:25:38,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:25:38,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:25:38,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:25:38,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:25:38,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:25:38,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:25:38,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:25:38,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:25:38,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:25:38,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:25:38,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:25:38,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:25:38,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:25:38,076 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:25:38,098 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:25:38,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:25:38,099 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:25:38,099 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:25:38,100 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:25:38,100 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:25:38,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:25:38,100 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:25:38,100 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:25:38,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:25:38,101 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:25:38,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:25:38,101 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:25:38,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:25:38,102 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:25:38,102 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:25:38,102 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:25:38,102 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:25:38,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:25:38,102 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:25:38,103 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:25:38,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:25:38,103 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:25:38,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:25:38,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:25:38,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:25:38,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:25:38,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:25:38,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:25:38,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:25:38,104 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:25:38,104 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:25:38,105 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:25:38,105 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79419a4ba87d66b20bd1eac3a57771b6df78d8c052d6832c2c2f61b321d58321 [2022-07-19 21:25:38,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:25:38,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:25:38,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:25:38,337 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:25:38,337 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:25:38,338 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c [2022-07-19 21:25:38,391 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe1050685/c4c101cfb8be46639efbda2294d37979/FLAG4b68316b7 [2022-07-19 21:25:38,756 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:25:38,757 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c [2022-07-19 21:25:38,762 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe1050685/c4c101cfb8be46639efbda2294d37979/FLAG4b68316b7 [2022-07-19 21:25:39,187 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe1050685/c4c101cfb8be46639efbda2294d37979 [2022-07-19 21:25:39,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:25:39,192 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:25:39,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:25:39,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:25:39,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:25:39,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:25:39" (1/1) ... [2022-07-19 21:25:39,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fa57b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:39, skipping insertion in model container [2022-07-19 21:25:39,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:25:39" (1/1) ... [2022-07-19 21:25:39,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:25:39,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:25:39,416 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-exp-term-symm.wvr.c[2628,2641] [2022-07-19 21:25:39,420 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:25:39,425 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:25:39,438 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-exp-term-symm.wvr.c[2628,2641] [2022-07-19 21:25:39,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:25:39,448 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:25:39,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:39 WrapperNode [2022-07-19 21:25:39,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:25:39,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:25:39,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:25:39,449 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:25:39,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:39" (1/1) ... [2022-07-19 21:25:39,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:39" (1/1) ... [2022-07-19 21:25:39,481 INFO L137 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 128 [2022-07-19 21:25:39,482 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:25:39,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:25:39,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:25:39,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:25:39,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:39" (1/1) ... [2022-07-19 21:25:39,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:39" (1/1) ... [2022-07-19 21:25:39,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:39" (1/1) ... [2022-07-19 21:25:39,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:39" (1/1) ... [2022-07-19 21:25:39,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:39" (1/1) ... [2022-07-19 21:25:39,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:39" (1/1) ... [2022-07-19 21:25:39,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:39" (1/1) ... [2022-07-19 21:25:39,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:25:39,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:25:39,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:25:39,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:25:39,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:39" (1/1) ... [2022-07-19 21:25:39,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:25:39,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:25:39,522 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) [2022-07-19 21:25:39,530 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 [2022-07-19 21:25:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:25:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:25:39,571 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:25:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:25:39,572 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:25:39,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:25:39,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:25:39,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:25:39,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:25:39,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:25:39,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:25:39,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:25:39,577 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:25:39,658 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:25:39,659 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:25:39,856 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:25:39,863 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:25:39,863 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:25:39,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:25:39 BoogieIcfgContainer [2022-07-19 21:25:39,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:25:39,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:25:39,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:25:39,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:25:39,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:25:39" (1/3) ... [2022-07-19 21:25:39,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba2ec67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:25:39, skipping insertion in model container [2022-07-19 21:25:39,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:39" (2/3) ... [2022-07-19 21:25:39,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba2ec67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:25:39, skipping insertion in model container [2022-07-19 21:25:39,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:25:39" (3/3) ... [2022-07-19 21:25:39,871 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-exp-term-symm.wvr.c [2022-07-19 21:25:39,875 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:25:39,881 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:25:39,882 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:25:39,882 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:25:39,937 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-19 21:25:39,968 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 168 places, 174 transitions, 364 flow [2022-07-19 21:25:40,013 INFO L129 PetriNetUnfolder]: 13/172 cut-off events. [2022-07-19 21:25:40,013 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:25:40,019 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 172 events. 13/172 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 283 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2022-07-19 21:25:40,020 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 174 transitions, 364 flow [2022-07-19 21:25:40,026 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 163 transitions, 338 flow [2022-07-19 21:25:40,034 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:25:40,038 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@6862f354, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1a1fa922 [2022-07-19 21:25:40,038 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-19 21:25:40,062 INFO L129 PetriNetUnfolder]: 13/162 cut-off events. [2022-07-19 21:25:40,062 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:25:40,062 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:40,063 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] [2022-07-19 21:25:40,063 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:40,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:40,067 INFO L85 PathProgramCache]: Analyzing trace with hash -679452967, now seen corresponding path program 1 times [2022-07-19 21:25:40,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:40,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84686439] [2022-07-19 21:25:40,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:40,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:40,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:40,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:40,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84686439] [2022-07-19 21:25:40,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84686439] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:40,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:40,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:25:40,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962271942] [2022-07-19 21:25:40,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:40,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:25:40,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:40,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:25:40,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:25:40,465 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 174 [2022-07-19 21:25:40,470 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 163 transitions, 338 flow. Second operand has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:40,471 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:40,471 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 174 [2022-07-19 21:25:40,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:40,726 INFO L129 PetriNetUnfolder]: 58/423 cut-off events. [2022-07-19 21:25:40,726 INFO L130 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-07-19 21:25:40,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 621 conditions, 423 events. 58/423 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1975 event pairs, 12 based on Foata normal form. 24/419 useless extension candidates. Maximal degree in co-relation 377. Up to 44 conditions per place. [2022-07-19 21:25:40,733 INFO L132 encePairwiseOnDemand]: 154/174 looper letters, 52 selfloop transitions, 10 changer transitions 34/223 dead transitions. [2022-07-19 21:25:40,733 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 223 transitions, 677 flow [2022-07-19 21:25:40,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 21:25:40,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-19 21:25:40,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2175 transitions. [2022-07-19 21:25:40,751 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-07-19 21:25:40,752 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2175 transitions. [2022-07-19 21:25:40,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2175 transitions. [2022-07-19 21:25:40,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:40,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2175 transitions. [2022-07-19 21:25:40,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 145.0) internal successors, (2175), 15 states have internal predecessors, (2175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:40,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 174.0) internal successors, (2784), 16 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:40,776 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 174.0) internal successors, (2784), 16 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:40,777 INFO L186 Difference]: Start difference. First operand has 157 places, 163 transitions, 338 flow. Second operand 15 states and 2175 transitions. [2022-07-19 21:25:40,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 223 transitions, 677 flow [2022-07-19 21:25:40,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 223 transitions, 651 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-19 21:25:40,806 INFO L242 Difference]: Finished difference. Result has 177 places, 161 transitions, 389 flow [2022-07-19 21:25:40,807 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=389, PETRI_PLACES=177, PETRI_TRANSITIONS=161} [2022-07-19 21:25:40,810 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 20 predicate places. [2022-07-19 21:25:40,810 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 161 transitions, 389 flow [2022-07-19 21:25:40,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:40,811 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:40,811 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] [2022-07-19 21:25:40,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:25:40,811 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:40,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:40,812 INFO L85 PathProgramCache]: Analyzing trace with hash 429160743, now seen corresponding path program 1 times [2022-07-19 21:25:40,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:40,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472817033] [2022-07-19 21:25:40,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:40,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:40,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:40,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:40,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472817033] [2022-07-19 21:25:40,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472817033] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:40,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:40,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:25:40,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299437164] [2022-07-19 21:25:40,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:40,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:25:40,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:40,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:25:40,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:25:40,934 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-07-19 21:25:40,934 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 161 transitions, 389 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:40,935 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:40,935 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-07-19 21:25:40,935 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:41,107 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([405] L44-17-->L44-18: Formula: (= v_~result_4~0_1 |v_thread1Thread1of1ForFork0_#t~ite4#1_3|) InVars {thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} OutVars{~result_4~0=v_~result_4~0_1, thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} AuxVars[] AssignedVars[~result_4~0][53], [26#L50-19true, 44#L44-18true, Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 108#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 214#(and (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))), 171#true]) [2022-07-19 21:25:41,108 INFO L384 tUnfolder$Statistics]: this new event has 77 ancestors and is cut-off event [2022-07-19 21:25:41,108 INFO L387 tUnfolder$Statistics]: existing Event has 75 ancestors and is cut-off event [2022-07-19 21:25:41,108 INFO L387 tUnfolder$Statistics]: existing Event has 99 ancestors and is cut-off event [2022-07-19 21:25:41,108 INFO L387 tUnfolder$Statistics]: existing Event has 73 ancestors and is cut-off event [2022-07-19 21:25:41,109 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([454] L50-18-->L50-19: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite8#1][123], [26#L50-19true, 44#L44-18true, Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 108#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 214#(and (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))), 171#true]) [2022-07-19 21:25:41,110 INFO L384 tUnfolder$Statistics]: this new event has 73 ancestors and is not cut-off event [2022-07-19 21:25:41,110 INFO L387 tUnfolder$Statistics]: existing Event has 99 ancestors and is not cut-off event [2022-07-19 21:25:41,110 INFO L387 tUnfolder$Statistics]: existing Event has 75 ancestors and is not cut-off event [2022-07-19 21:25:41,110 INFO L387 tUnfolder$Statistics]: existing Event has 77 ancestors and is not cut-off event [2022-07-19 21:25:41,112 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([454] L50-18-->L50-19: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite8#1][123], [26#L50-19true, Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 108#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), 149#L44-19true, Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 214#(and (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))), 171#true]) [2022-07-19 21:25:41,112 INFO L384 tUnfolder$Statistics]: this new event has 74 ancestors and is not cut-off event [2022-07-19 21:25:41,112 INFO L387 tUnfolder$Statistics]: existing Event has 76 ancestors and is not cut-off event [2022-07-19 21:25:41,112 INFO L387 tUnfolder$Statistics]: existing Event has 100 ancestors and is not cut-off event [2022-07-19 21:25:41,112 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is not cut-off event [2022-07-19 21:25:41,128 INFO L129 PetriNetUnfolder]: 101/1203 cut-off events. [2022-07-19 21:25:41,129 INFO L130 PetriNetUnfolder]: For 340/354 co-relation queries the response was YES. [2022-07-19 21:25:41,131 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1752 conditions, 1203 events. 101/1203 cut-off events. For 340/354 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 9165 event pairs, 24 based on Foata normal form. 5/1103 useless extension candidates. Maximal degree in co-relation 1715. Up to 58 conditions per place. [2022-07-19 21:25:41,133 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 35 selfloop transitions, 16 changer transitions 2/194 dead transitions. [2022-07-19 21:25:41,134 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 194 transitions, 570 flow [2022-07-19 21:25:41,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:25:41,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:25:41,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 789 transitions. [2022-07-19 21:25:41,136 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.906896551724138 [2022-07-19 21:25:41,136 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 789 transitions. [2022-07-19 21:25:41,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 789 transitions. [2022-07-19 21:25:41,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:41,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 789 transitions. [2022-07-19 21:25:41,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.8) internal successors, (789), 5 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:41,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:41,140 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:41,140 INFO L186 Difference]: Start difference. First operand has 177 places, 161 transitions, 389 flow. Second operand 5 states and 789 transitions. [2022-07-19 21:25:41,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 194 transitions, 570 flow [2022-07-19 21:25:41,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 194 transitions, 559 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-07-19 21:25:41,146 INFO L242 Difference]: Finished difference. Result has 170 places, 173 transitions, 498 flow [2022-07-19 21:25:41,147 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=498, PETRI_PLACES=170, PETRI_TRANSITIONS=173} [2022-07-19 21:25:41,147 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 13 predicate places. [2022-07-19 21:25:41,147 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 173 transitions, 498 flow [2022-07-19 21:25:41,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:41,148 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:41,148 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] [2022-07-19 21:25:41,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:25:41,149 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:41,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:41,149 INFO L85 PathProgramCache]: Analyzing trace with hash 857239029, now seen corresponding path program 2 times [2022-07-19 21:25:41,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:41,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304410046] [2022-07-19 21:25:41,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:41,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:41,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:41,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:41,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304410046] [2022-07-19 21:25:41,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304410046] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:41,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:41,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:25:41,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376471526] [2022-07-19 21:25:41,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:41,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:25:41,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:41,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:25:41,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:25:41,209 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-07-19 21:25:41,210 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 173 transitions, 498 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:41,210 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:41,210 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-07-19 21:25:41,210 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:41,357 INFO L129 PetriNetUnfolder]: 94/1204 cut-off events. [2022-07-19 21:25:41,357 INFO L130 PetriNetUnfolder]: For 323/339 co-relation queries the response was YES. [2022-07-19 21:25:41,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1844 conditions, 1204 events. 94/1204 cut-off events. For 323/339 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 8776 event pairs, 26 based on Foata normal form. 10/1150 useless extension candidates. Maximal degree in co-relation 1605. Up to 78 conditions per place. [2022-07-19 21:25:41,362 INFO L132 encePairwiseOnDemand]: 164/174 looper letters, 43 selfloop transitions, 10 changer transitions 0/194 dead transitions. [2022-07-19 21:25:41,362 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 194 transitions, 703 flow [2022-07-19 21:25:41,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 21:25:41,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-19 21:25:41,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 625 transitions. [2022-07-19 21:25:41,364 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8979885057471264 [2022-07-19 21:25:41,364 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 625 transitions. [2022-07-19 21:25:41,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 625 transitions. [2022-07-19 21:25:41,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:41,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 625 transitions. [2022-07-19 21:25:41,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.25) internal successors, (625), 4 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:41,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:41,367 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:41,368 INFO L186 Difference]: Start difference. First operand has 170 places, 173 transitions, 498 flow. Second operand 4 states and 625 transitions. [2022-07-19 21:25:41,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 194 transitions, 703 flow [2022-07-19 21:25:41,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 194 transitions, 699 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-19 21:25:41,373 INFO L242 Difference]: Finished difference. Result has 175 places, 179 transitions, 580 flow [2022-07-19 21:25:41,373 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=580, PETRI_PLACES=175, PETRI_TRANSITIONS=179} [2022-07-19 21:25:41,374 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 18 predicate places. [2022-07-19 21:25:41,374 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 179 transitions, 580 flow [2022-07-19 21:25:41,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:41,374 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:41,374 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] [2022-07-19 21:25:41,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:25:41,375 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:41,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:41,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1926552705, now seen corresponding path program 3 times [2022-07-19 21:25:41,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:41,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532883425] [2022-07-19 21:25:41,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:41,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:41,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:41,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:41,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532883425] [2022-07-19 21:25:41,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532883425] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:41,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:41,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:25:41,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880649272] [2022-07-19 21:25:41,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:41,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:25:41,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:41,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:25:41,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:25:41,420 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-07-19 21:25:41,421 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 179 transitions, 580 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:41,421 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:41,421 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-07-19 21:25:41,421 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:41,542 INFO L129 PetriNetUnfolder]: 95/1359 cut-off events. [2022-07-19 21:25:41,543 INFO L130 PetriNetUnfolder]: For 517/526 co-relation queries the response was YES. [2022-07-19 21:25:41,546 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2111 conditions, 1359 events. 95/1359 cut-off events. For 517/526 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 10439 event pairs, 27 based on Foata normal form. 6/1297 useless extension candidates. Maximal degree in co-relation 1448. Up to 110 conditions per place. [2022-07-19 21:25:41,549 INFO L132 encePairwiseOnDemand]: 163/174 looper letters, 39 selfloop transitions, 14 changer transitions 0/194 dead transitions. [2022-07-19 21:25:41,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 194 transitions, 767 flow [2022-07-19 21:25:41,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 21:25:41,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-19 21:25:41,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 623 transitions. [2022-07-19 21:25:41,551 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8951149425287356 [2022-07-19 21:25:41,552 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 623 transitions. [2022-07-19 21:25:41,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 623 transitions. [2022-07-19 21:25:41,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:41,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 623 transitions. [2022-07-19 21:25:41,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:41,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:41,554 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:41,555 INFO L186 Difference]: Start difference. First operand has 175 places, 179 transitions, 580 flow. Second operand 4 states and 623 transitions. [2022-07-19 21:25:41,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 194 transitions, 767 flow [2022-07-19 21:25:41,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 194 transitions, 767 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:25:41,560 INFO L242 Difference]: Finished difference. Result has 180 places, 186 transitions, 698 flow [2022-07-19 21:25:41,560 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=698, PETRI_PLACES=180, PETRI_TRANSITIONS=186} [2022-07-19 21:25:41,561 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 23 predicate places. [2022-07-19 21:25:41,561 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 186 transitions, 698 flow [2022-07-19 21:25:41,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:41,561 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:41,562 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] [2022-07-19 21:25:41,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:25:41,562 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:41,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:41,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1582955703, now seen corresponding path program 1 times [2022-07-19 21:25:41,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:41,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121478999] [2022-07-19 21:25:41,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:41,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:41,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:41,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:41,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:41,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121478999] [2022-07-19 21:25:41,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121478999] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:41,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:41,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:25:41,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441139064] [2022-07-19 21:25:41,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:41,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:25:41,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:41,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:25:41,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:25:41,650 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-07-19 21:25:41,650 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 186 transitions, 698 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:41,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:41,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-07-19 21:25:41,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:41,760 INFO L129 PetriNetUnfolder]: 76/1138 cut-off events. [2022-07-19 21:25:41,760 INFO L130 PetriNetUnfolder]: For 593/602 co-relation queries the response was YES. [2022-07-19 21:25:41,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1858 conditions, 1138 events. 76/1138 cut-off events. For 593/602 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7914 event pairs, 23 based on Foata normal form. 9/1088 useless extension candidates. Maximal degree in co-relation 1311. Up to 98 conditions per place. [2022-07-19 21:25:41,766 INFO L132 encePairwiseOnDemand]: 162/174 looper letters, 42 selfloop transitions, 15 changer transitions 0/198 dead transitions. [2022-07-19 21:25:41,766 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 198 transitions, 879 flow [2022-07-19 21:25:41,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 21:25:41,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-19 21:25:41,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 623 transitions. [2022-07-19 21:25:41,768 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8951149425287356 [2022-07-19 21:25:41,768 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 623 transitions. [2022-07-19 21:25:41,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 623 transitions. [2022-07-19 21:25:41,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:41,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 623 transitions. [2022-07-19 21:25:41,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:41,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:41,771 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:41,771 INFO L186 Difference]: Start difference. First operand has 180 places, 186 transitions, 698 flow. Second operand 4 states and 623 transitions. [2022-07-19 21:25:41,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 198 transitions, 879 flow [2022-07-19 21:25:41,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 198 transitions, 862 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:25:41,777 INFO L242 Difference]: Finished difference. Result has 183 places, 190 transitions, 782 flow [2022-07-19 21:25:41,777 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=782, PETRI_PLACES=183, PETRI_TRANSITIONS=190} [2022-07-19 21:25:41,779 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 26 predicate places. [2022-07-19 21:25:41,779 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 190 transitions, 782 flow [2022-07-19 21:25:41,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:41,779 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:41,780 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] [2022-07-19 21:25:41,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:25:41,780 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:41,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:41,781 INFO L85 PathProgramCache]: Analyzing trace with hash -758953314, now seen corresponding path program 1 times [2022-07-19 21:25:41,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:41,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386269691] [2022-07-19 21:25:41,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:41,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:41,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:41,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:41,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386269691] [2022-07-19 21:25:41,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386269691] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:41,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:41,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:25:41,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587701344] [2022-07-19 21:25:41,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:41,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:25:41,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:41,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:25:41,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:25:41,975 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:25:41,977 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 190 transitions, 782 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:41,977 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:41,977 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:25:41,977 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:42,499 INFO L129 PetriNetUnfolder]: 334/1697 cut-off events. [2022-07-19 21:25:42,499 INFO L130 PetriNetUnfolder]: For 868/930 co-relation queries the response was YES. [2022-07-19 21:25:42,504 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3363 conditions, 1697 events. 334/1697 cut-off events. For 868/930 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 12792 event pairs, 168 based on Foata normal form. 3/1614 useless extension candidates. Maximal degree in co-relation 1977. Up to 609 conditions per place. [2022-07-19 21:25:42,509 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 98 selfloop transitions, 5 changer transitions 48/296 dead transitions. [2022-07-19 21:25:42,509 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 296 transitions, 1407 flow [2022-07-19 21:25:42,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-19 21:25:42,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-19 21:25:42,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3982 transitions. [2022-07-19 21:25:42,516 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7628352490421456 [2022-07-19 21:25:42,516 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3982 transitions. [2022-07-19 21:25:42,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3982 transitions. [2022-07-19 21:25:42,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:42,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3982 transitions. [2022-07-19 21:25:42,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 132.73333333333332) internal successors, (3982), 30 states have internal predecessors, (3982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:42,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:42,531 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:42,531 INFO L186 Difference]: Start difference. First operand has 183 places, 190 transitions, 782 flow. Second operand 30 states and 3982 transitions. [2022-07-19 21:25:42,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 296 transitions, 1407 flow [2022-07-19 21:25:42,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 296 transitions, 1391 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:25:42,538 INFO L242 Difference]: Finished difference. Result has 238 places, 192 transitions, 881 flow [2022-07-19 21:25:42,539 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=881, PETRI_PLACES=238, PETRI_TRANSITIONS=192} [2022-07-19 21:25:42,539 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 81 predicate places. [2022-07-19 21:25:42,539 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 192 transitions, 881 flow [2022-07-19 21:25:42,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:42,540 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:42,540 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] [2022-07-19 21:25:42,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:25:42,541 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:42,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:42,541 INFO L85 PathProgramCache]: Analyzing trace with hash 2048181902, now seen corresponding path program 1 times [2022-07-19 21:25:42,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:42,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730705541] [2022-07-19 21:25:42,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:42,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:42,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:42,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:42,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730705541] [2022-07-19 21:25:42,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730705541] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:42,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:42,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:25:42,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928264335] [2022-07-19 21:25:42,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:42,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:25:42,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:42,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:25:42,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:25:42,653 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:25:42,654 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 192 transitions, 881 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:42,654 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:42,654 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:25:42,654 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:43,191 INFO L129 PetriNetUnfolder]: 406/1882 cut-off events. [2022-07-19 21:25:43,192 INFO L130 PetriNetUnfolder]: For 7656/7759 co-relation queries the response was YES. [2022-07-19 21:25:43,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6197 conditions, 1882 events. 406/1882 cut-off events. For 7656/7759 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 14174 event pairs, 254 based on Foata normal form. 3/1799 useless extension candidates. Maximal degree in co-relation 5988. Up to 719 conditions per place. [2022-07-19 21:25:43,207 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 79 selfloop transitions, 17 changer transitions 40/281 dead transitions. [2022-07-19 21:25:43,208 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 281 transitions, 1986 flow [2022-07-19 21:25:43,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 21:25:43,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-19 21:25:43,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3453 transitions. [2022-07-19 21:25:43,214 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.763262599469496 [2022-07-19 21:25:43,214 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3453 transitions. [2022-07-19 21:25:43,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3453 transitions. [2022-07-19 21:25:43,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:43,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3453 transitions. [2022-07-19 21:25:43,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.80769230769232) internal successors, (3453), 26 states have internal predecessors, (3453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:43,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:43,229 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:43,229 INFO L186 Difference]: Start difference. First operand has 238 places, 192 transitions, 881 flow. Second operand 26 states and 3453 transitions. [2022-07-19 21:25:43,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 281 transitions, 1986 flow [2022-07-19 21:25:43,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 281 transitions, 1793 flow, removed 96 selfloop flow, removed 13 redundant places. [2022-07-19 21:25:43,258 INFO L242 Difference]: Finished difference. Result has 246 places, 209 transitions, 1078 flow [2022-07-19 21:25:43,259 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1078, PETRI_PLACES=246, PETRI_TRANSITIONS=209} [2022-07-19 21:25:43,259 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 89 predicate places. [2022-07-19 21:25:43,260 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 209 transitions, 1078 flow [2022-07-19 21:25:43,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:43,260 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:43,261 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] [2022-07-19 21:25:43,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:25:43,261 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:43,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:43,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1358766246, now seen corresponding path program 2 times [2022-07-19 21:25:43,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:43,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702178024] [2022-07-19 21:25:43,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:43,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:43,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:43,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:43,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702178024] [2022-07-19 21:25:43,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702178024] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:43,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:43,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:25:43,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625381990] [2022-07-19 21:25:43,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:43,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:25:43,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:43,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:25:43,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:25:43,377 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:25:43,378 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 209 transitions, 1078 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:43,378 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:43,378 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:25:43,378 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:43,972 INFO L129 PetriNetUnfolder]: 408/1983 cut-off events. [2022-07-19 21:25:43,972 INFO L130 PetriNetUnfolder]: For 13337/13438 co-relation queries the response was YES. [2022-07-19 21:25:43,983 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7401 conditions, 1983 events. 408/1983 cut-off events. For 13337/13438 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 15299 event pairs, 214 based on Foata normal form. 3/1905 useless extension candidates. Maximal degree in co-relation 7239. Up to 669 conditions per place. [2022-07-19 21:25:43,991 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 117 selfloop transitions, 14 changer transitions 48/324 dead transitions. [2022-07-19 21:25:43,991 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 324 transitions, 2614 flow [2022-07-19 21:25:43,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-19 21:25:43,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-19 21:25:43,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4117 transitions. [2022-07-19 21:25:43,997 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7632554690396737 [2022-07-19 21:25:43,997 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4117 transitions. [2022-07-19 21:25:43,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4117 transitions. [2022-07-19 21:25:43,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:43,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4117 transitions. [2022-07-19 21:25:44,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 132.80645161290323) internal successors, (4117), 31 states have internal predecessors, (4117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:44,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:44,044 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:44,044 INFO L186 Difference]: Start difference. First operand has 246 places, 209 transitions, 1078 flow. Second operand 31 states and 4117 transitions. [2022-07-19 21:25:44,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 324 transitions, 2614 flow [2022-07-19 21:25:44,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 324 transitions, 2194 flow, removed 210 selfloop flow, removed 15 redundant places. [2022-07-19 21:25:44,071 INFO L242 Difference]: Finished difference. Result has 273 places, 214 transitions, 1169 flow [2022-07-19 21:25:44,072 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=984, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1169, PETRI_PLACES=273, PETRI_TRANSITIONS=214} [2022-07-19 21:25:44,072 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 116 predicate places. [2022-07-19 21:25:44,072 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 214 transitions, 1169 flow [2022-07-19 21:25:44,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:44,073 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:44,073 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] [2022-07-19 21:25:44,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:25:44,074 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:44,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:44,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1511718624, now seen corresponding path program 3 times [2022-07-19 21:25:44,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:44,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374681888] [2022-07-19 21:25:44,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:44,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:44,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:44,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:44,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374681888] [2022-07-19 21:25:44,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374681888] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:44,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:44,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:25:44,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440223087] [2022-07-19 21:25:44,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:44,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:25:44,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:44,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:25:44,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:25:44,160 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:25:44,161 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 214 transitions, 1169 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:44,161 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:44,162 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:25:44,162 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:44,642 INFO L129 PetriNetUnfolder]: 399/1880 cut-off events. [2022-07-19 21:25:44,642 INFO L130 PetriNetUnfolder]: For 14920/15031 co-relation queries the response was YES. [2022-07-19 21:25:44,653 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7687 conditions, 1880 events. 399/1880 cut-off events. For 14920/15031 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 14199 event pairs, 239 based on Foata normal form. 6/1797 useless extension candidates. Maximal degree in co-relation 7511. Up to 755 conditions per place. [2022-07-19 21:25:44,660 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 84 selfloop transitions, 18 changer transitions 33/280 dead transitions. [2022-07-19 21:25:44,660 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 280 transitions, 2353 flow [2022-07-19 21:25:44,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:25:44,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:25:44,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2925 transitions. [2022-07-19 21:25:44,663 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7641065830721003 [2022-07-19 21:25:44,663 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2925 transitions. [2022-07-19 21:25:44,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2925 transitions. [2022-07-19 21:25:44,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:44,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2925 transitions. [2022-07-19 21:25:44,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.95454545454547) internal successors, (2925), 22 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:44,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:44,671 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:44,671 INFO L186 Difference]: Start difference. First operand has 273 places, 214 transitions, 1169 flow. Second operand 22 states and 2925 transitions. [2022-07-19 21:25:44,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 280 transitions, 2353 flow [2022-07-19 21:25:44,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 280 transitions, 2040 flow, removed 156 selfloop flow, removed 22 redundant places. [2022-07-19 21:25:44,703 INFO L242 Difference]: Finished difference. Result has 267 places, 224 transitions, 1335 flow [2022-07-19 21:25:44,703 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1094, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1335, PETRI_PLACES=267, PETRI_TRANSITIONS=224} [2022-07-19 21:25:44,703 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 110 predicate places. [2022-07-19 21:25:44,704 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 224 transitions, 1335 flow [2022-07-19 21:25:44,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:44,704 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:44,704 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] [2022-07-19 21:25:44,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:25:44,705 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:44,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:44,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1794699346, now seen corresponding path program 4 times [2022-07-19 21:25:44,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:44,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716271159] [2022-07-19 21:25:44,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:44,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:44,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:44,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:44,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716271159] [2022-07-19 21:25:44,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716271159] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:44,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:44,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:25:44,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385552030] [2022-07-19 21:25:44,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:44,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:25:44,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:44,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:25:44,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:25:44,826 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:25:44,827 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 224 transitions, 1335 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:44,827 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:44,827 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:25:44,827 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:45,405 INFO L129 PetriNetUnfolder]: 430/1981 cut-off events. [2022-07-19 21:25:45,406 INFO L130 PetriNetUnfolder]: For 10876/10996 co-relation queries the response was YES. [2022-07-19 21:25:45,415 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7499 conditions, 1981 events. 430/1981 cut-off events. For 10876/10996 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 15140 event pairs, 284 based on Foata normal form. 4/1895 useless extension candidates. Maximal degree in co-relation 7412. Up to 817 conditions per place. [2022-07-19 21:25:45,422 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 100 selfloop transitions, 26 changer transitions 40/311 dead transitions. [2022-07-19 21:25:45,422 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 311 transitions, 2684 flow [2022-07-19 21:25:45,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-19 21:25:45,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-07-19 21:25:45,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3320 transitions. [2022-07-19 21:25:45,425 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7632183908045977 [2022-07-19 21:25:45,425 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3320 transitions. [2022-07-19 21:25:45,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3320 transitions. [2022-07-19 21:25:45,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:45,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3320 transitions. [2022-07-19 21:25:45,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 132.8) internal successors, (3320), 25 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:45,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:45,433 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:45,433 INFO L186 Difference]: Start difference. First operand has 267 places, 224 transitions, 1335 flow. Second operand 25 states and 3320 transitions. [2022-07-19 21:25:45,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 311 transitions, 2684 flow [2022-07-19 21:25:45,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 311 transitions, 2423 flow, removed 113 selfloop flow, removed 12 redundant places. [2022-07-19 21:25:45,461 INFO L242 Difference]: Finished difference. Result has 288 places, 239 transitions, 1519 flow [2022-07-19 21:25:45,461 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1519, PETRI_PLACES=288, PETRI_TRANSITIONS=239} [2022-07-19 21:25:45,462 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 131 predicate places. [2022-07-19 21:25:45,462 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 239 transitions, 1519 flow [2022-07-19 21:25:45,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:45,463 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:45,463 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] [2022-07-19 21:25:45,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:25:45,463 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:45,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:45,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1292765374, now seen corresponding path program 5 times [2022-07-19 21:25:45,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:45,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433501716] [2022-07-19 21:25:45,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:45,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:45,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:45,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:45,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433501716] [2022-07-19 21:25:45,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433501716] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:45,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:45,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:25:45,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906680603] [2022-07-19 21:25:45,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:45,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:25:45,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:45,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:25:45,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:25:45,589 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:25:45,590 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 239 transitions, 1519 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:45,590 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:45,590 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:25:45,590 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:46,288 INFO L129 PetriNetUnfolder]: 428/2036 cut-off events. [2022-07-19 21:25:46,289 INFO L130 PetriNetUnfolder]: For 16701/16827 co-relation queries the response was YES. [2022-07-19 21:25:46,301 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8579 conditions, 2036 events. 428/2036 cut-off events. For 16701/16827 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15779 event pairs, 255 based on Foata normal form. 3/1954 useless extension candidates. Maximal degree in co-relation 8451. Up to 753 conditions per place. [2022-07-19 21:25:46,307 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 173 selfloop transitions, 25 changer transitions 54/397 dead transitions. [2022-07-19 21:25:46,307 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 397 transitions, 3928 flow [2022-07-19 21:25:46,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-19 21:25:46,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-19 21:25:46,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3981 transitions. [2022-07-19 21:25:46,311 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7626436781609195 [2022-07-19 21:25:46,311 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3981 transitions. [2022-07-19 21:25:46,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3981 transitions. [2022-07-19 21:25:46,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:46,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3981 transitions. [2022-07-19 21:25:46,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 132.7) internal successors, (3981), 30 states have internal predecessors, (3981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:46,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:46,320 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:46,320 INFO L186 Difference]: Start difference. First operand has 288 places, 239 transitions, 1519 flow. Second operand 30 states and 3981 transitions. [2022-07-19 21:25:46,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 397 transitions, 3928 flow [2022-07-19 21:25:46,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 397 transitions, 3536 flow, removed 196 selfloop flow, removed 13 redundant places. [2022-07-19 21:25:46,358 INFO L242 Difference]: Finished difference. Result has 316 places, 242 transitions, 1626 flow [2022-07-19 21:25:46,359 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1415, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1626, PETRI_PLACES=316, PETRI_TRANSITIONS=242} [2022-07-19 21:25:46,359 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 159 predicate places. [2022-07-19 21:25:46,359 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 242 transitions, 1626 flow [2022-07-19 21:25:46,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:46,360 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:46,360 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] [2022-07-19 21:25:46,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 21:25:46,360 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:46,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:46,360 INFO L85 PathProgramCache]: Analyzing trace with hash 10274408, now seen corresponding path program 6 times [2022-07-19 21:25:46,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:46,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600097681] [2022-07-19 21:25:46,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:46,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:46,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:46,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:46,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600097681] [2022-07-19 21:25:46,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600097681] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:46,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:46,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:25:46,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158649493] [2022-07-19 21:25:46,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:46,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:25:46,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:46,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:25:46,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:25:46,450 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:25:46,451 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 242 transitions, 1626 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:46,451 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:46,451 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:25:46,451 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:47,152 INFO L129 PetriNetUnfolder]: 443/2076 cut-off events. [2022-07-19 21:25:47,153 INFO L130 PetriNetUnfolder]: For 19227/19353 co-relation queries the response was YES. [2022-07-19 21:25:47,170 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9066 conditions, 2076 events. 443/2076 cut-off events. For 19227/19353 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 16097 event pairs, 282 based on Foata normal form. 9/1993 useless extension candidates. Maximal degree in co-relation 8864. Up to 849 conditions per place. [2022-07-19 21:25:47,177 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 116 selfloop transitions, 35 changer transitions 41/337 dead transitions. [2022-07-19 21:25:47,178 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 337 transitions, 3306 flow [2022-07-19 21:25:47,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-19 21:25:47,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-19 21:25:47,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3708 transitions. [2022-07-19 21:25:47,181 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7610837438423645 [2022-07-19 21:25:47,181 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3708 transitions. [2022-07-19 21:25:47,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3708 transitions. [2022-07-19 21:25:47,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:47,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3708 transitions. [2022-07-19 21:25:47,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.42857142857142) internal successors, (3708), 28 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:47,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:47,191 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:47,191 INFO L186 Difference]: Start difference. First operand has 316 places, 242 transitions, 1626 flow. Second operand 28 states and 3708 transitions. [2022-07-19 21:25:47,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 337 transitions, 3306 flow [2022-07-19 21:25:47,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 337 transitions, 3138 flow, removed 82 selfloop flow, removed 21 redundant places. [2022-07-19 21:25:47,252 INFO L242 Difference]: Finished difference. Result has 318 places, 255 transitions, 1896 flow [2022-07-19 21:25:47,252 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1561, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1896, PETRI_PLACES=318, PETRI_TRANSITIONS=255} [2022-07-19 21:25:47,253 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 161 predicate places. [2022-07-19 21:25:47,253 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 255 transitions, 1896 flow [2022-07-19 21:25:47,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:47,254 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:47,254 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] [2022-07-19 21:25:47,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 21:25:47,254 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:47,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:47,254 INFO L85 PathProgramCache]: Analyzing trace with hash 624347520, now seen corresponding path program 7 times [2022-07-19 21:25:47,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:47,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419978403] [2022-07-19 21:25:47,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:47,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:47,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:47,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:47,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419978403] [2022-07-19 21:25:47,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419978403] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:47,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:47,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:25:47,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321000144] [2022-07-19 21:25:47,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:47,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:25:47,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:47,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:25:47,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:25:47,342 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:25:47,342 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 255 transitions, 1896 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:47,343 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:47,343 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:25:47,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:47,941 INFO L129 PetriNetUnfolder]: 440/2094 cut-off events. [2022-07-19 21:25:47,941 INFO L130 PetriNetUnfolder]: For 16923/17049 co-relation queries the response was YES. [2022-07-19 21:25:47,958 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9029 conditions, 2094 events. 440/2094 cut-off events. For 16923/17049 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 16388 event pairs, 289 based on Foata normal form. 6/2001 useless extension candidates. Maximal degree in co-relation 8898. Up to 860 conditions per place. [2022-07-19 21:25:47,967 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 121 selfloop transitions, 36 changer transitions 45/347 dead transitions. [2022-07-19 21:25:47,968 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 347 transitions, 3673 flow [2022-07-19 21:25:47,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 21:25:47,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-19 21:25:47,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3447 transitions. [2022-07-19 21:25:47,975 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7619363395225465 [2022-07-19 21:25:47,975 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3447 transitions. [2022-07-19 21:25:47,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3447 transitions. [2022-07-19 21:25:47,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:47,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3447 transitions. [2022-07-19 21:25:47,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.57692307692307) internal successors, (3447), 26 states have internal predecessors, (3447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:47,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:47,985 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:47,985 INFO L186 Difference]: Start difference. First operand has 318 places, 255 transitions, 1896 flow. Second operand 26 states and 3447 transitions. [2022-07-19 21:25:47,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 347 transitions, 3673 flow [2022-07-19 21:25:48,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 347 transitions, 3492 flow, removed 82 selfloop flow, removed 16 redundant places. [2022-07-19 21:25:48,036 INFO L242 Difference]: Finished difference. Result has 330 places, 266 transitions, 2143 flow [2022-07-19 21:25:48,037 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1823, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2143, PETRI_PLACES=330, PETRI_TRANSITIONS=266} [2022-07-19 21:25:48,038 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 173 predicate places. [2022-07-19 21:25:48,038 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 266 transitions, 2143 flow [2022-07-19 21:25:48,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:48,038 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:48,038 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] [2022-07-19 21:25:48,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 21:25:48,039 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:48,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:48,039 INFO L85 PathProgramCache]: Analyzing trace with hash 918863826, now seen corresponding path program 8 times [2022-07-19 21:25:48,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:48,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61020734] [2022-07-19 21:25:48,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:48,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:48,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:48,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:48,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61020734] [2022-07-19 21:25:48,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61020734] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:48,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:48,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:25:48,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995432113] [2022-07-19 21:25:48,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:48,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:25:48,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:48,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:25:48,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:25:48,148 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:25:48,149 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 266 transitions, 2143 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:48,149 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:48,149 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:25:48,149 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:48,765 INFO L129 PetriNetUnfolder]: 433/2073 cut-off events. [2022-07-19 21:25:48,766 INFO L130 PetriNetUnfolder]: For 16989/17111 co-relation queries the response was YES. [2022-07-19 21:25:48,778 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8985 conditions, 2073 events. 433/2073 cut-off events. For 16989/17111 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 16164 event pairs, 285 based on Foata normal form. 9/1988 useless extension candidates. Maximal degree in co-relation 8766. Up to 852 conditions per place. [2022-07-19 21:25:48,783 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 119 selfloop transitions, 45 changer transitions 33/342 dead transitions. [2022-07-19 21:25:48,784 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 342 transitions, 3678 flow [2022-07-19 21:25:48,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:25:48,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:25:48,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2923 transitions. [2022-07-19 21:25:48,786 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7635841170323929 [2022-07-19 21:25:48,786 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2923 transitions. [2022-07-19 21:25:48,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2923 transitions. [2022-07-19 21:25:48,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:48,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2923 transitions. [2022-07-19 21:25:48,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.86363636363637) internal successors, (2923), 22 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:48,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:48,794 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:48,794 INFO L186 Difference]: Start difference. First operand has 330 places, 266 transitions, 2143 flow. Second operand 22 states and 2923 transitions. [2022-07-19 21:25:48,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 342 transitions, 3678 flow [2022-07-19 21:25:48,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 342 transitions, 3502 flow, removed 77 selfloop flow, removed 17 redundant places. [2022-07-19 21:25:48,846 INFO L242 Difference]: Finished difference. Result has 327 places, 273 transitions, 2332 flow [2022-07-19 21:25:48,846 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2064, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2332, PETRI_PLACES=327, PETRI_TRANSITIONS=273} [2022-07-19 21:25:48,846 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 170 predicate places. [2022-07-19 21:25:48,846 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 273 transitions, 2332 flow [2022-07-19 21:25:48,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:48,847 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:48,847 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] [2022-07-19 21:25:48,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 21:25:48,847 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:48,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:48,848 INFO L85 PathProgramCache]: Analyzing trace with hash -169181728, now seen corresponding path program 9 times [2022-07-19 21:25:48,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:48,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300685781] [2022-07-19 21:25:48,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:48,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:48,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:48,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:48,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300685781] [2022-07-19 21:25:48,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300685781] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:48,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:48,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:25:48,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858017609] [2022-07-19 21:25:48,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:48,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:25:48,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:48,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:25:48,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:25:48,933 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:25:48,934 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 273 transitions, 2332 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:48,934 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:48,934 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:25:48,934 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:49,494 INFO L129 PetriNetUnfolder]: 432/2071 cut-off events. [2022-07-19 21:25:49,495 INFO L130 PetriNetUnfolder]: For 15589/15714 co-relation queries the response was YES. [2022-07-19 21:25:49,510 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8927 conditions, 2071 events. 432/2071 cut-off events. For 15589/15714 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 16137 event pairs, 282 based on Foata normal form. 10/1989 useless extension candidates. Maximal degree in co-relation 8713. Up to 842 conditions per place. [2022-07-19 21:25:49,517 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 123 selfloop transitions, 38 changer transitions 45/351 dead transitions. [2022-07-19 21:25:49,517 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 351 transitions, 3986 flow [2022-07-19 21:25:49,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-19 21:25:49,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-19 21:25:49,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3581 transitions. [2022-07-19 21:25:49,520 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7622392507449979 [2022-07-19 21:25:49,520 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3581 transitions. [2022-07-19 21:25:49,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3581 transitions. [2022-07-19 21:25:49,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:49,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3581 transitions. [2022-07-19 21:25:49,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.62962962962962) internal successors, (3581), 27 states have internal predecessors, (3581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:49,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:49,528 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:49,528 INFO L186 Difference]: Start difference. First operand has 327 places, 273 transitions, 2332 flow. Second operand 27 states and 3581 transitions. [2022-07-19 21:25:49,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 351 transitions, 3986 flow [2022-07-19 21:25:49,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 351 transitions, 3866 flow, removed 51 selfloop flow, removed 7 redundant places. [2022-07-19 21:25:49,585 INFO L242 Difference]: Finished difference. Result has 354 places, 276 transitions, 2485 flow [2022-07-19 21:25:49,586 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2256, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2485, PETRI_PLACES=354, PETRI_TRANSITIONS=276} [2022-07-19 21:25:49,586 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 197 predicate places. [2022-07-19 21:25:49,586 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 276 transitions, 2485 flow [2022-07-19 21:25:49,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:49,587 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:49,587 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] [2022-07-19 21:25:49,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 21:25:49,587 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:49,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:49,588 INFO L85 PathProgramCache]: Analyzing trace with hash -2095242120, now seen corresponding path program 10 times [2022-07-19 21:25:49,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:49,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684248668] [2022-07-19 21:25:49,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:49,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:49,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:49,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:49,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684248668] [2022-07-19 21:25:49,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684248668] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:49,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:49,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:25:49,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297239581] [2022-07-19 21:25:49,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:49,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:25:49,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:49,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:25:49,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:25:49,668 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:25:49,669 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 276 transitions, 2485 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:49,669 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:49,669 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:25:49,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:50,193 INFO L129 PetriNetUnfolder]: 415/2059 cut-off events. [2022-07-19 21:25:50,193 INFO L130 PetriNetUnfolder]: For 16961/17080 co-relation queries the response was YES. [2022-07-19 21:25:50,208 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8806 conditions, 2059 events. 415/2059 cut-off events. For 16961/17080 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 16078 event pairs, 282 based on Foata normal form. 10/1978 useless extension candidates. Maximal degree in co-relation 8650. Up to 844 conditions per place. [2022-07-19 21:25:50,214 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 116 selfloop transitions, 29 changer transitions 38/328 dead transitions. [2022-07-19 21:25:50,214 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 328 transitions, 3581 flow [2022-07-19 21:25:50,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:25:50,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:25:50,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2400 transitions. [2022-07-19 21:25:50,216 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7662835249042146 [2022-07-19 21:25:50,216 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2400 transitions. [2022-07-19 21:25:50,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2400 transitions. [2022-07-19 21:25:50,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:50,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2400 transitions. [2022-07-19 21:25:50,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 133.33333333333334) internal successors, (2400), 18 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:50,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:50,221 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:50,222 INFO L186 Difference]: Start difference. First operand has 354 places, 276 transitions, 2485 flow. Second operand 18 states and 2400 transitions. [2022-07-19 21:25:50,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 328 transitions, 3581 flow [2022-07-19 21:25:50,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 328 transitions, 3380 flow, removed 69 selfloop flow, removed 19 redundant places. [2022-07-19 21:25:50,286 INFO L242 Difference]: Finished difference. Result has 340 places, 256 transitions, 2052 flow [2022-07-19 21:25:50,286 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2338, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2052, PETRI_PLACES=340, PETRI_TRANSITIONS=256} [2022-07-19 21:25:50,286 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 183 predicate places. [2022-07-19 21:25:50,286 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 256 transitions, 2052 flow [2022-07-19 21:25:50,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:50,287 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:50,287 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] [2022-07-19 21:25:50,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 21:25:50,287 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:50,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:50,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1849615134, now seen corresponding path program 11 times [2022-07-19 21:25:50,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:50,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392915267] [2022-07-19 21:25:50,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:50,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:50,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:50,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:50,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392915267] [2022-07-19 21:25:50,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392915267] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:50,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:50,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:25:50,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554333457] [2022-07-19 21:25:50,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:50,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:25:50,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:50,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:25:50,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:25:50,370 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:25:50,371 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 256 transitions, 2052 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:50,371 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:50,371 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:25:50,371 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:50,882 INFO L129 PetriNetUnfolder]: 419/2020 cut-off events. [2022-07-19 21:25:50,882 INFO L130 PetriNetUnfolder]: For 14988/15113 co-relation queries the response was YES. [2022-07-19 21:25:50,894 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8649 conditions, 2020 events. 419/2020 cut-off events. For 14988/15113 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15585 event pairs, 286 based on Foata normal form. 10/1936 useless extension candidates. Maximal degree in co-relation 8554. Up to 844 conditions per place. [2022-07-19 21:25:50,900 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 106 selfloop transitions, 36 changer transitions 30/317 dead transitions. [2022-07-19 21:25:50,900 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 317 transitions, 3313 flow [2022-07-19 21:25:50,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:25:50,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:25:50,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2663 transitions. [2022-07-19 21:25:50,903 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7652298850574712 [2022-07-19 21:25:50,903 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2663 transitions. [2022-07-19 21:25:50,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2663 transitions. [2022-07-19 21:25:50,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:50,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2663 transitions. [2022-07-19 21:25:50,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.15) internal successors, (2663), 20 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:50,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:50,908 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:50,909 INFO L186 Difference]: Start difference. First operand has 340 places, 256 transitions, 2052 flow. Second operand 20 states and 2663 transitions. [2022-07-19 21:25:50,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 317 transitions, 3313 flow [2022-07-19 21:25:50,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 317 transitions, 3066 flow, removed 29 selfloop flow, removed 22 redundant places. [2022-07-19 21:25:50,961 INFO L242 Difference]: Finished difference. Result has 322 places, 265 transitions, 2178 flow [2022-07-19 21:25:50,961 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1894, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2178, PETRI_PLACES=322, PETRI_TRANSITIONS=265} [2022-07-19 21:25:50,962 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 165 predicate places. [2022-07-19 21:25:50,962 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 265 transitions, 2178 flow [2022-07-19 21:25:50,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:50,962 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:50,962 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] [2022-07-19 21:25:50,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 21:25:50,963 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:50,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:50,963 INFO L85 PathProgramCache]: Analyzing trace with hash -461714984, now seen corresponding path program 12 times [2022-07-19 21:25:50,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:50,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120402596] [2022-07-19 21:25:50,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:50,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:51,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:51,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:51,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120402596] [2022-07-19 21:25:51,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120402596] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:51,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:51,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:25:51,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399373212] [2022-07-19 21:25:51,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:51,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:25:51,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:51,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:25:51,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:25:51,053 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:25:51,054 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 265 transitions, 2178 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:51,054 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:51,054 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:25:51,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:51,621 INFO L129 PetriNetUnfolder]: 416/2128 cut-off events. [2022-07-19 21:25:51,621 INFO L130 PetriNetUnfolder]: For 14485/14589 co-relation queries the response was YES. [2022-07-19 21:25:51,638 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8570 conditions, 2128 events. 416/2128 cut-off events. For 14485/14589 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 16824 event pairs, 294 based on Foata normal form. 4/2038 useless extension candidates. Maximal degree in co-relation 8480. Up to 842 conditions per place. [2022-07-19 21:25:51,645 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 107 selfloop transitions, 37 changer transitions 31/320 dead transitions. [2022-07-19 21:25:51,645 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 320 transitions, 3311 flow [2022-07-19 21:25:51,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 21:25:51,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-19 21:25:51,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2534 transitions. [2022-07-19 21:25:51,648 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7664851784633999 [2022-07-19 21:25:51,648 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2534 transitions. [2022-07-19 21:25:51,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2534 transitions. [2022-07-19 21:25:51,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:51,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2534 transitions. [2022-07-19 21:25:51,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.3684210526316) internal successors, (2534), 19 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:51,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:51,654 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:51,654 INFO L186 Difference]: Start difference. First operand has 322 places, 265 transitions, 2178 flow. Second operand 19 states and 2534 transitions. [2022-07-19 21:25:51,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 320 transitions, 3311 flow [2022-07-19 21:25:51,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 320 transitions, 3188 flow, removed 41 selfloop flow, removed 6 redundant places. [2022-07-19 21:25:51,710 INFO L242 Difference]: Finished difference. Result has 333 places, 268 transitions, 2264 flow [2022-07-19 21:25:51,710 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2090, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2264, PETRI_PLACES=333, PETRI_TRANSITIONS=268} [2022-07-19 21:25:51,710 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 176 predicate places. [2022-07-19 21:25:51,711 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 268 transitions, 2264 flow [2022-07-19 21:25:51,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:51,711 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:51,711 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] [2022-07-19 21:25:51,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 21:25:51,712 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:51,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:51,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1477349244, now seen corresponding path program 13 times [2022-07-19 21:25:51,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:51,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142469739] [2022-07-19 21:25:51,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:51,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:51,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:51,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:51,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142469739] [2022-07-19 21:25:51,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142469739] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:51,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:51,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:25:51,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37481444] [2022-07-19 21:25:51,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:51,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:25:51,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:51,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:25:51,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:25:51,812 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:25:51,812 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 268 transitions, 2264 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:51,813 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:51,813 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:25:51,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:52,382 INFO L129 PetriNetUnfolder]: 413/2006 cut-off events. [2022-07-19 21:25:52,382 INFO L130 PetriNetUnfolder]: For 13931/14053 co-relation queries the response was YES. [2022-07-19 21:25:52,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8373 conditions, 2006 events. 413/2006 cut-off events. For 13931/14053 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15534 event pairs, 283 based on Foata normal form. 9/1920 useless extension candidates. Maximal degree in co-relation 8278. Up to 842 conditions per place. [2022-07-19 21:25:52,403 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 106 selfloop transitions, 28 changer transitions 40/319 dead transitions. [2022-07-19 21:25:52,404 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 319 transitions, 3274 flow [2022-07-19 21:25:52,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:25:52,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:25:52,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2921 transitions. [2022-07-19 21:25:52,407 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7630616509926855 [2022-07-19 21:25:52,407 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2921 transitions. [2022-07-19 21:25:52,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2921 transitions. [2022-07-19 21:25:52,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:52,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2921 transitions. [2022-07-19 21:25:52,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.77272727272728) internal successors, (2921), 22 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:52,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:52,413 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:52,413 INFO L186 Difference]: Start difference. First operand has 333 places, 268 transitions, 2264 flow. Second operand 22 states and 2921 transitions. [2022-07-19 21:25:52,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 319 transitions, 3274 flow [2022-07-19 21:25:52,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 319 transitions, 3135 flow, removed 32 selfloop flow, removed 8 redundant places. [2022-07-19 21:25:52,472 INFO L242 Difference]: Finished difference. Result has 347 places, 259 transitions, 2067 flow [2022-07-19 21:25:52,472 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2159, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2067, PETRI_PLACES=347, PETRI_TRANSITIONS=259} [2022-07-19 21:25:52,473 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 190 predicate places. [2022-07-19 21:25:52,473 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 259 transitions, 2067 flow [2022-07-19 21:25:52,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:52,473 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:52,474 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] [2022-07-19 21:25:52,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 21:25:52,474 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:52,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:52,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1590304908, now seen corresponding path program 14 times [2022-07-19 21:25:52,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:52,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820502279] [2022-07-19 21:25:52,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:52,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:52,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:52,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:52,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820502279] [2022-07-19 21:25:52,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820502279] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:52,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:52,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:25:52,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660548203] [2022-07-19 21:25:52,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:52,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:25:52,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:52,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:25:52,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:25:52,558 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:25:52,559 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 259 transitions, 2067 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:52,559 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:52,559 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:25:52,559 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:53,085 INFO L129 PetriNetUnfolder]: 398/2072 cut-off events. [2022-07-19 21:25:53,085 INFO L130 PetriNetUnfolder]: For 14286/14390 co-relation queries the response was YES. [2022-07-19 21:25:53,098 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8195 conditions, 2072 events. 398/2072 cut-off events. For 14286/14390 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 16275 event pairs, 293 based on Foata normal form. 4/1984 useless extension candidates. Maximal degree in co-relation 8095. Up to 830 conditions per place. [2022-07-19 21:25:53,102 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 97 selfloop transitions, 14 changer transitions 43/299 dead transitions. [2022-07-19 21:25:53,103 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 299 transitions, 2865 flow [2022-07-19 21:25:53,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 21:25:53,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-19 21:25:53,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2784 transitions. [2022-07-19 21:25:53,105 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2022-07-19 21:25:53,105 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2784 transitions. [2022-07-19 21:25:53,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2784 transitions. [2022-07-19 21:25:53,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:53,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2784 transitions. [2022-07-19 21:25:53,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.57142857142858) internal successors, (2784), 21 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,110 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,110 INFO L186 Difference]: Start difference. First operand has 347 places, 259 transitions, 2067 flow. Second operand 21 states and 2784 transitions. [2022-07-19 21:25:53,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 299 transitions, 2865 flow [2022-07-19 21:25:53,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 299 transitions, 2696 flow, removed 36 selfloop flow, removed 24 redundant places. [2022-07-19 21:25:53,157 INFO L242 Difference]: Finished difference. Result has 330 places, 236 transitions, 1609 flow [2022-07-19 21:25:53,157 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1935, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1609, PETRI_PLACES=330, PETRI_TRANSITIONS=236} [2022-07-19 21:25:53,158 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 173 predicate places. [2022-07-19 21:25:53,158 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 236 transitions, 1609 flow [2022-07-19 21:25:53,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,158 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:53,158 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] [2022-07-19 21:25:53,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 21:25:53,159 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:53,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:53,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1971771582, now seen corresponding path program 15 times [2022-07-19 21:25:53,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:53,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082739667] [2022-07-19 21:25:53,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:53,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:53,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:53,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:53,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:53,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082739667] [2022-07-19 21:25:53,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082739667] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:53,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:53,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:25:53,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236683681] [2022-07-19 21:25:53,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:53,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:25:53,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:53,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:25:53,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:25:53,250 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:25:53,251 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 236 transitions, 1609 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,251 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:53,251 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:25:53,251 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:53,802 INFO L129 PetriNetUnfolder]: 409/1984 cut-off events. [2022-07-19 21:25:53,802 INFO L130 PetriNetUnfolder]: For 13775/13893 co-relation queries the response was YES. [2022-07-19 21:25:53,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8185 conditions, 1984 events. 409/1984 cut-off events. For 13775/13893 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15278 event pairs, 289 based on Foata normal form. 5/1894 useless extension candidates. Maximal degree in co-relation 8094. Up to 830 conditions per place. [2022-07-19 21:25:53,821 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 96 selfloop transitions, 26 changer transitions 35/302 dead transitions. [2022-07-19 21:25:53,821 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 302 transitions, 2891 flow [2022-07-19 21:25:53,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:25:53,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:25:53,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3187 transitions. [2022-07-19 21:25:53,824 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7631704980842912 [2022-07-19 21:25:53,824 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3187 transitions. [2022-07-19 21:25:53,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3187 transitions. [2022-07-19 21:25:53,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:53,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3187 transitions. [2022-07-19 21:25:53,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.79166666666666) internal successors, (3187), 24 states have internal predecessors, (3187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,833 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,833 INFO L186 Difference]: Start difference. First operand has 330 places, 236 transitions, 1609 flow. Second operand 24 states and 3187 transitions. [2022-07-19 21:25:53,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 302 transitions, 2891 flow [2022-07-19 21:25:53,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 302 transitions, 2646 flow, removed 42 selfloop flow, removed 23 redundant places. [2022-07-19 21:25:53,877 INFO L242 Difference]: Finished difference. Result has 311 places, 247 transitions, 1789 flow [2022-07-19 21:25:53,878 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1503, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1789, PETRI_PLACES=311, PETRI_TRANSITIONS=247} [2022-07-19 21:25:53,878 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 154 predicate places. [2022-07-19 21:25:53,878 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 247 transitions, 1789 flow [2022-07-19 21:25:53,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,879 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:53,879 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] [2022-07-19 21:25:53,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 21:25:53,879 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:53,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:53,880 INFO L85 PathProgramCache]: Analyzing trace with hash -596781132, now seen corresponding path program 16 times [2022-07-19 21:25:53,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:53,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57361438] [2022-07-19 21:25:53,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:53,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:53,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:53,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:53,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:53,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57361438] [2022-07-19 21:25:53,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57361438] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:53,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:53,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:25:53,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270482677] [2022-07-19 21:25:53,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:53,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:25:53,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:53,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:25:53,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:25:53,977 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:25:53,978 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 247 transitions, 1789 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,978 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:53,978 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:25:53,978 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:54,492 INFO L129 PetriNetUnfolder]: 406/1986 cut-off events. [2022-07-19 21:25:54,492 INFO L130 PetriNetUnfolder]: For 12731/12850 co-relation queries the response was YES. [2022-07-19 21:25:54,505 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7986 conditions, 1986 events. 406/1986 cut-off events. For 12731/12850 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15327 event pairs, 289 based on Foata normal form. 6/1897 useless extension candidates. Maximal degree in co-relation 7896. Up to 832 conditions per place. [2022-07-19 21:25:54,510 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 95 selfloop transitions, 28 changer transitions 36/304 dead transitions. [2022-07-19 21:25:54,510 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 304 transitions, 2924 flow [2022-07-19 21:25:54,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-19 21:25:54,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-19 21:25:54,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3056 transitions. [2022-07-19 21:25:54,512 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7636181909045477 [2022-07-19 21:25:54,512 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3056 transitions. [2022-07-19 21:25:54,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3056 transitions. [2022-07-19 21:25:54,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:54,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3056 transitions. [2022-07-19 21:25:54,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.8695652173913) internal successors, (3056), 23 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,518 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,518 INFO L186 Difference]: Start difference. First operand has 311 places, 247 transitions, 1789 flow. Second operand 23 states and 3056 transitions. [2022-07-19 21:25:54,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 304 transitions, 2924 flow [2022-07-19 21:25:54,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 304 transitions, 2773 flow, removed 70 selfloop flow, removed 11 redundant places. [2022-07-19 21:25:54,562 INFO L242 Difference]: Finished difference. Result has 323 places, 251 transitions, 1915 flow [2022-07-19 21:25:54,563 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1721, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1915, PETRI_PLACES=323, PETRI_TRANSITIONS=251} [2022-07-19 21:25:54,563 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 166 predicate places. [2022-07-19 21:25:54,563 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 251 transitions, 1915 flow [2022-07-19 21:25:54,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,564 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:54,564 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] [2022-07-19 21:25:54,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 21:25:54,565 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:54,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:54,565 INFO L85 PathProgramCache]: Analyzing trace with hash 323830658, now seen corresponding path program 17 times [2022-07-19 21:25:54,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:54,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200485289] [2022-07-19 21:25:54,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:54,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:54,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:54,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:54,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200485289] [2022-07-19 21:25:54,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200485289] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:54,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:54,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:25:54,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253149848] [2022-07-19 21:25:54,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:54,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:25:54,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:54,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:25:54,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:25:54,678 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:25:54,679 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 251 transitions, 1915 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:54,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:25:54,679 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:55,155 INFO L129 PetriNetUnfolder]: 401/1970 cut-off events. [2022-07-19 21:25:55,155 INFO L130 PetriNetUnfolder]: For 12818/12937 co-relation queries the response was YES. [2022-07-19 21:25:55,169 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7937 conditions, 1970 events. 401/1970 cut-off events. For 12818/12937 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15188 event pairs, 287 based on Foata normal form. 6/1882 useless extension candidates. Maximal degree in co-relation 7841. Up to 832 conditions per place. [2022-07-19 21:25:55,174 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 94 selfloop transitions, 30 changer transitions 30/299 dead transitions. [2022-07-19 21:25:55,174 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 299 transitions, 2899 flow [2022-07-19 21:25:55,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:25:55,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:25:55,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2665 transitions. [2022-07-19 21:25:55,176 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7658045977011494 [2022-07-19 21:25:55,177 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2665 transitions. [2022-07-19 21:25:55,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2665 transitions. [2022-07-19 21:25:55,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:55,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2665 transitions. [2022-07-19 21:25:55,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.25) internal successors, (2665), 20 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,181 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,181 INFO L186 Difference]: Start difference. First operand has 323 places, 251 transitions, 1915 flow. Second operand 20 states and 2665 transitions. [2022-07-19 21:25:55,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 299 transitions, 2899 flow [2022-07-19 21:25:55,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 299 transitions, 2731 flow, removed 62 selfloop flow, removed 14 redundant places. [2022-07-19 21:25:55,263 INFO L242 Difference]: Finished difference. Result has 323 places, 258 transitions, 2029 flow [2022-07-19 21:25:55,264 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1820, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2029, PETRI_PLACES=323, PETRI_TRANSITIONS=258} [2022-07-19 21:25:55,264 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 166 predicate places. [2022-07-19 21:25:55,264 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 258 transitions, 2029 flow [2022-07-19 21:25:55,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,265 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:55,265 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] [2022-07-19 21:25:55,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 21:25:55,265 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:55,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:55,266 INFO L85 PathProgramCache]: Analyzing trace with hash 2116462952, now seen corresponding path program 18 times [2022-07-19 21:25:55,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:55,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385878874] [2022-07-19 21:25:55,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:55,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:55,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:55,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:55,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385878874] [2022-07-19 21:25:55,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385878874] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:55,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:55,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:25:55,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529096359] [2022-07-19 21:25:55,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:55,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:25:55,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:55,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:25:55,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:25:55,355 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:25:55,356 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 258 transitions, 2029 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,356 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:55,356 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:25:55,356 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:55,805 INFO L129 PetriNetUnfolder]: 405/2034 cut-off events. [2022-07-19 21:25:55,806 INFO L130 PetriNetUnfolder]: For 12631/12744 co-relation queries the response was YES. [2022-07-19 21:25:55,820 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8048 conditions, 2034 events. 405/2034 cut-off events. For 12631/12744 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 15816 event pairs, 311 based on Foata normal form. 4/1946 useless extension candidates. Maximal degree in co-relation 7955. Up to 832 conditions per place. [2022-07-19 21:25:55,825 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 94 selfloop transitions, 38 changer transitions 30/307 dead transitions. [2022-07-19 21:25:55,826 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 307 transitions, 3062 flow [2022-07-19 21:25:55,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 21:25:55,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-19 21:25:55,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2534 transitions. [2022-07-19 21:25:55,828 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7664851784633999 [2022-07-19 21:25:55,828 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2534 transitions. [2022-07-19 21:25:55,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2534 transitions. [2022-07-19 21:25:55,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:55,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2534 transitions. [2022-07-19 21:25:55,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.3684210526316) internal successors, (2534), 19 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,832 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,832 INFO L186 Difference]: Start difference. First operand has 323 places, 258 transitions, 2029 flow. Second operand 19 states and 2534 transitions. [2022-07-19 21:25:55,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 307 transitions, 3062 flow [2022-07-19 21:25:55,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 307 transitions, 2921 flow, removed 48 selfloop flow, removed 7 redundant places. [2022-07-19 21:25:55,878 INFO L242 Difference]: Finished difference. Result has 334 places, 266 transitions, 2205 flow [2022-07-19 21:25:55,878 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1938, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2205, PETRI_PLACES=334, PETRI_TRANSITIONS=266} [2022-07-19 21:25:55,878 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 177 predicate places. [2022-07-19 21:25:55,878 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 266 transitions, 2205 flow [2022-07-19 21:25:55,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,879 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:55,879 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] [2022-07-19 21:25:55,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 21:25:55,879 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:55,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:55,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1168380126, now seen corresponding path program 19 times [2022-07-19 21:25:55,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:55,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120917897] [2022-07-19 21:25:55,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:55,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:55,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:55,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:55,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120917897] [2022-07-19 21:25:55,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120917897] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:55,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:55,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:25:55,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821130159] [2022-07-19 21:25:55,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:55,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:25:55,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:55,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:25:55,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:25:55,964 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:25:55,965 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 266 transitions, 2205 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,965 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:55,965 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:25:55,965 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:56,468 INFO L129 PetriNetUnfolder]: 402/2033 cut-off events. [2022-07-19 21:25:56,468 INFO L130 PetriNetUnfolder]: For 12661/12769 co-relation queries the response was YES. [2022-07-19 21:25:56,483 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8051 conditions, 2033 events. 402/2033 cut-off events. For 12661/12769 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 15830 event pairs, 307 based on Foata normal form. 3/1945 useless extension candidates. Maximal degree in co-relation 7952. Up to 830 conditions per place. [2022-07-19 21:25:56,488 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 101 selfloop transitions, 34 changer transitions 31/311 dead transitions. [2022-07-19 21:25:56,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 311 transitions, 3188 flow [2022-07-19 21:25:56,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:25:56,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:25:56,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2665 transitions. [2022-07-19 21:25:56,490 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7658045977011494 [2022-07-19 21:25:56,490 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2665 transitions. [2022-07-19 21:25:56,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2665 transitions. [2022-07-19 21:25:56,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:56,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2665 transitions. [2022-07-19 21:25:56,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.25) internal successors, (2665), 20 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,494 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,494 INFO L186 Difference]: Start difference. First operand has 334 places, 266 transitions, 2205 flow. Second operand 20 states and 2665 transitions. [2022-07-19 21:25:56,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 311 transitions, 3188 flow [2022-07-19 21:25:56,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 311 transitions, 3054 flow, removed 30 selfloop flow, removed 9 redundant places. [2022-07-19 21:25:56,542 INFO L242 Difference]: Finished difference. Result has 344 places, 270 transitions, 2294 flow [2022-07-19 21:25:56,542 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2107, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2294, PETRI_PLACES=344, PETRI_TRANSITIONS=270} [2022-07-19 21:25:56,542 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 187 predicate places. [2022-07-19 21:25:56,543 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 270 transitions, 2294 flow [2022-07-19 21:25:56,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,543 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:56,544 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] [2022-07-19 21:25:56,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 21:25:56,544 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:56,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:56,544 INFO L85 PathProgramCache]: Analyzing trace with hash 222130868, now seen corresponding path program 20 times [2022-07-19 21:25:56,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:56,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989280153] [2022-07-19 21:25:56,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:56,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:56,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:56,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:56,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989280153] [2022-07-19 21:25:56,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989280153] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:56,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:56,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:25:56,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219401610] [2022-07-19 21:25:56,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:56,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:25:56,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:56,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:25:56,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:25:56,629 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:25:56,629 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 270 transitions, 2294 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,629 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:56,629 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:25:56,630 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:57,147 INFO L129 PetriNetUnfolder]: 399/1973 cut-off events. [2022-07-19 21:25:57,147 INFO L130 PetriNetUnfolder]: For 12192/12308 co-relation queries the response was YES. [2022-07-19 21:25:57,163 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7917 conditions, 1973 events. 399/1973 cut-off events. For 12192/12308 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15259 event pairs, 283 based on Foata normal form. 5/1884 useless extension candidates. Maximal degree in co-relation 7814. Up to 830 conditions per place. [2022-07-19 21:25:57,168 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 94 selfloop transitions, 30 changer transitions 40/309 dead transitions. [2022-07-19 21:25:57,168 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 309 transitions, 3106 flow [2022-07-19 21:25:57,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:25:57,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:25:57,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2921 transitions. [2022-07-19 21:25:57,170 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7630616509926855 [2022-07-19 21:25:57,170 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2921 transitions. [2022-07-19 21:25:57,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2921 transitions. [2022-07-19 21:25:57,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:57,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2921 transitions. [2022-07-19 21:25:57,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.77272727272728) internal successors, (2921), 22 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,208 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,208 INFO L186 Difference]: Start difference. First operand has 344 places, 270 transitions, 2294 flow. Second operand 22 states and 2921 transitions. [2022-07-19 21:25:57,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 309 transitions, 3106 flow [2022-07-19 21:25:57,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 309 transitions, 2991 flow, removed 34 selfloop flow, removed 7 redundant places. [2022-07-19 21:25:57,256 INFO L242 Difference]: Finished difference. Result has 358 places, 261 transitions, 2111 flow [2022-07-19 21:25:57,256 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2201, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2111, PETRI_PLACES=358, PETRI_TRANSITIONS=261} [2022-07-19 21:25:57,256 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 201 predicate places. [2022-07-19 21:25:57,257 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 261 transitions, 2111 flow [2022-07-19 21:25:57,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,257 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:57,257 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] [2022-07-19 21:25:57,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 21:25:57,257 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:57,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:57,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1328147332, now seen corresponding path program 21 times [2022-07-19 21:25:57,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:57,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659727697] [2022-07-19 21:25:57,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:57,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:57,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:57,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:57,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659727697] [2022-07-19 21:25:57,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659727697] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:57,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:57,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:25:57,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534222875] [2022-07-19 21:25:57,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:57,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:25:57,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:57,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:25:57,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:25:57,346 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:25:57,346 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 261 transitions, 2111 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,346 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:57,347 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:25:57,347 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:57,839 INFO L129 PetriNetUnfolder]: 390/1996 cut-off events. [2022-07-19 21:25:57,840 INFO L130 PetriNetUnfolder]: For 12231/12339 co-relation queries the response was YES. [2022-07-19 21:25:57,855 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7756 conditions, 1996 events. 390/1996 cut-off events. For 12231/12339 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 15542 event pairs, 307 based on Foata normal form. 3/1908 useless extension candidates. Maximal degree in co-relation 7647. Up to 830 conditions per place. [2022-07-19 21:25:57,859 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 91 selfloop transitions, 16 changer transitions 43/295 dead transitions. [2022-07-19 21:25:57,860 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 295 transitions, 2825 flow [2022-07-19 21:25:57,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 21:25:57,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-19 21:25:57,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2791 transitions. [2022-07-19 21:25:57,862 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7638204707170224 [2022-07-19 21:25:57,862 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2791 transitions. [2022-07-19 21:25:57,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2791 transitions. [2022-07-19 21:25:57,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:57,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2791 transitions. [2022-07-19 21:25:57,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.9047619047619) internal successors, (2791), 21 states have internal predecessors, (2791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,866 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,866 INFO L186 Difference]: Start difference. First operand has 358 places, 261 transitions, 2111 flow. Second operand 21 states and 2791 transitions. [2022-07-19 21:25:57,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 295 transitions, 2825 flow [2022-07-19 21:25:57,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 295 transitions, 2630 flow, removed 39 selfloop flow, removed 25 redundant places. [2022-07-19 21:25:57,913 INFO L242 Difference]: Finished difference. Result has 341 places, 244 transitions, 1732 flow [2022-07-19 21:25:57,914 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1965, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1732, PETRI_PLACES=341, PETRI_TRANSITIONS=244} [2022-07-19 21:25:57,914 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 184 predicate places. [2022-07-19 21:25:57,914 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 244 transitions, 1732 flow [2022-07-19 21:25:57,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,915 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:57,915 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] [2022-07-19 21:25:57,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 21:25:57,915 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:57,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:57,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1758735014, now seen corresponding path program 22 times [2022-07-19 21:25:57,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:57,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550710877] [2022-07-19 21:25:57,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:57,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:58,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:58,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:58,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550710877] [2022-07-19 21:25:58,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550710877] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:58,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:58,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:25:58,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834425430] [2022-07-19 21:25:58,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:58,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:25:58,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:58,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:25:58,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:25:58,005 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:25:58,005 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 244 transitions, 1732 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:58,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:58,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:25:58,006 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:58,449 INFO L129 PetriNetUnfolder]: 375/1884 cut-off events. [2022-07-19 21:25:58,449 INFO L130 PetriNetUnfolder]: For 11013/11129 co-relation queries the response was YES. [2022-07-19 21:25:58,464 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7220 conditions, 1884 events. 375/1884 cut-off events. For 11013/11129 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14308 event pairs, 281 based on Foata normal form. 5/1798 useless extension candidates. Maximal degree in co-relation 7122. Up to 817 conditions per place. [2022-07-19 21:25:58,468 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 76 selfloop transitions, 4 changer transitions 46/271 dead transitions. [2022-07-19 21:25:58,468 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 271 transitions, 2261 flow [2022-07-19 21:25:58,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:25:58,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:25:58,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2652 transitions. [2022-07-19 21:25:58,470 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7620689655172413 [2022-07-19 21:25:58,470 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2652 transitions. [2022-07-19 21:25:58,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2652 transitions. [2022-07-19 21:25:58,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:58,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2652 transitions. [2022-07-19 21:25:58,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.6) internal successors, (2652), 20 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:58,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:58,474 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:58,474 INFO L186 Difference]: Start difference. First operand has 341 places, 244 transitions, 1732 flow. Second operand 20 states and 2652 transitions. [2022-07-19 21:25:58,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 271 transitions, 2261 flow [2022-07-19 21:25:58,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 271 transitions, 2134 flow, removed 25 selfloop flow, removed 24 redundant places. [2022-07-19 21:25:58,512 INFO L242 Difference]: Finished difference. Result has 316 places, 217 transitions, 1255 flow [2022-07-19 21:25:58,512 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1629, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1255, PETRI_PLACES=316, PETRI_TRANSITIONS=217} [2022-07-19 21:25:58,513 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 159 predicate places. [2022-07-19 21:25:58,513 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 217 transitions, 1255 flow [2022-07-19 21:25:58,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:58,513 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:58,513 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] [2022-07-19 21:25:58,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 21:25:58,514 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:58,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:58,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1429686126, now seen corresponding path program 23 times [2022-07-19 21:25:58,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:58,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85032275] [2022-07-19 21:25:58,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:58,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:58,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:58,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:58,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85032275] [2022-07-19 21:25:58,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85032275] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:58,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:58,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:25:58,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519479637] [2022-07-19 21:25:58,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:58,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:25:58,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:58,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:25:58,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:25:58,604 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:25:58,605 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 217 transitions, 1255 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:58,605 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:58,605 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:25:58,605 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:59,176 INFO L129 PetriNetUnfolder]: 394/1934 cut-off events. [2022-07-19 21:25:59,189 INFO L130 PetriNetUnfolder]: For 11131/11241 co-relation queries the response was YES. [2022-07-19 21:25:59,202 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7460 conditions, 1934 events. 394/1934 cut-off events. For 11131/11241 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14769 event pairs, 274 based on Foata normal form. 3/1847 useless extension candidates. Maximal degree in co-relation 7374. Up to 819 conditions per place. [2022-07-19 21:25:59,207 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 100 selfloop transitions, 23 changer transitions 42/310 dead transitions. [2022-07-19 21:25:59,207 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 310 transitions, 2669 flow [2022-07-19 21:25:59,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-19 21:25:59,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-19 21:25:59,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3707 transitions. [2022-07-19 21:25:59,230 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7608784893267652 [2022-07-19 21:25:59,230 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3707 transitions. [2022-07-19 21:25:59,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3707 transitions. [2022-07-19 21:25:59,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:59,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3707 transitions. [2022-07-19 21:25:59,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.39285714285714) internal successors, (3707), 28 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,236 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,236 INFO L186 Difference]: Start difference. First operand has 316 places, 217 transitions, 1255 flow. Second operand 28 states and 3707 transitions. [2022-07-19 21:25:59,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 310 transitions, 2669 flow [2022-07-19 21:25:59,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 310 transitions, 2500 flow, removed 40 selfloop flow, removed 19 redundant places. [2022-07-19 21:25:59,265 INFO L242 Difference]: Finished difference. Result has 304 places, 230 transitions, 1471 flow [2022-07-19 21:25:59,266 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1205, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1471, PETRI_PLACES=304, PETRI_TRANSITIONS=230} [2022-07-19 21:25:59,267 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 147 predicate places. [2022-07-19 21:25:59,267 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 230 transitions, 1471 flow [2022-07-19 21:25:59,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,268 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:59,268 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] [2022-07-19 21:25:59,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-19 21:25:59,268 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:59,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:59,268 INFO L85 PathProgramCache]: Analyzing trace with hash 550604824, now seen corresponding path program 24 times [2022-07-19 21:25:59,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:59,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828021912] [2022-07-19 21:25:59,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:59,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:59,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:59,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:59,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828021912] [2022-07-19 21:25:59,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828021912] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:59,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:59,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:25:59,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69240928] [2022-07-19 21:25:59,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:59,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:25:59,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:59,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:25:59,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:25:59,370 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:25:59,370 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 230 transitions, 1471 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,371 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:59,371 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:25:59,371 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:59,929 INFO L129 PetriNetUnfolder]: 391/1912 cut-off events. [2022-07-19 21:25:59,930 INFO L130 PetriNetUnfolder]: For 10818/10928 co-relation queries the response was YES. [2022-07-19 21:25:59,944 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7478 conditions, 1912 events. 391/1912 cut-off events. For 10818/10928 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14556 event pairs, 277 based on Foata normal form. 3/1821 useless extension candidates. Maximal degree in co-relation 7386. Up to 817 conditions per place. [2022-07-19 21:25:59,949 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 89 selfloop transitions, 25 changer transitions 42/301 dead transitions. [2022-07-19 21:25:59,950 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 301 transitions, 2710 flow [2022-07-19 21:25:59,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-19 21:25:59,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-19 21:25:59,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3579 transitions. [2022-07-19 21:25:59,953 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7618135376756067 [2022-07-19 21:25:59,953 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3579 transitions. [2022-07-19 21:25:59,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3579 transitions. [2022-07-19 21:25:59,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:59,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3579 transitions. [2022-07-19 21:25:59,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.55555555555554) internal successors, (3579), 27 states have internal predecessors, (3579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,959 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,959 INFO L186 Difference]: Start difference. First operand has 304 places, 230 transitions, 1471 flow. Second operand 27 states and 3579 transitions. [2022-07-19 21:25:59,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 301 transitions, 2710 flow [2022-07-19 21:25:59,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 301 transitions, 2546 flow, removed 74 selfloop flow, removed 17 redundant places. [2022-07-19 21:25:59,992 INFO L242 Difference]: Finished difference. Result has 315 places, 234 transitions, 1627 flow [2022-07-19 21:25:59,993 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1627, PETRI_PLACES=315, PETRI_TRANSITIONS=234} [2022-07-19 21:25:59,993 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 158 predicate places. [2022-07-19 21:25:59,993 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 234 transitions, 1627 flow [2022-07-19 21:25:59,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,993 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:59,994 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] [2022-07-19 21:25:59,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-19 21:25:59,994 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:59,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:59,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1446322912, now seen corresponding path program 25 times [2022-07-19 21:25:59,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:59,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53056271] [2022-07-19 21:25:59,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:59,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:00,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:00,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:00,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:00,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53056271] [2022-07-19 21:26:00,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53056271] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:00,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:00,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:00,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192602229] [2022-07-19 21:26:00,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:00,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:00,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:00,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:00,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:00,101 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:00,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 234 transitions, 1627 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,102 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:00,102 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:00,102 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:00,646 INFO L129 PetriNetUnfolder]: 386/1894 cut-off events. [2022-07-19 21:26:00,647 INFO L130 PetriNetUnfolder]: For 12161/12271 co-relation queries the response was YES. [2022-07-19 21:26:00,661 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7606 conditions, 1894 events. 386/1894 cut-off events. For 12161/12271 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14376 event pairs, 270 based on Foata normal form. 3/1807 useless extension candidates. Maximal degree in co-relation 7508. Up to 820 conditions per place. [2022-07-19 21:26:00,666 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 98 selfloop transitions, 27 changer transitions 37/307 dead transitions. [2022-07-19 21:26:00,666 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 307 transitions, 2901 flow [2022-07-19 21:26:00,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:26:00,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:26:00,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3185 transitions. [2022-07-19 21:26:00,668 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7626915708812261 [2022-07-19 21:26:00,669 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3185 transitions. [2022-07-19 21:26:00,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3185 transitions. [2022-07-19 21:26:00,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:00,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3185 transitions. [2022-07-19 21:26:00,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.70833333333334) internal successors, (3185), 24 states have internal predecessors, (3185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,673 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,673 INFO L186 Difference]: Start difference. First operand has 315 places, 234 transitions, 1627 flow. Second operand 24 states and 3185 transitions. [2022-07-19 21:26:00,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 307 transitions, 2901 flow [2022-07-19 21:26:00,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 307 transitions, 2677 flow, removed 93 selfloop flow, removed 20 redundant places. [2022-07-19 21:26:00,715 INFO L242 Difference]: Finished difference. Result has 314 places, 241 transitions, 1750 flow [2022-07-19 21:26:00,715 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1530, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1750, PETRI_PLACES=314, PETRI_TRANSITIONS=241} [2022-07-19 21:26:00,716 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 157 predicate places. [2022-07-19 21:26:00,716 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 241 transitions, 1750 flow [2022-07-19 21:26:00,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,717 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:00,717 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] [2022-07-19 21:26:00,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-19 21:26:00,718 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:00,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:00,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1840107906, now seen corresponding path program 26 times [2022-07-19 21:26:00,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:00,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861931322] [2022-07-19 21:26:00,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:00,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:00,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:00,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:00,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861931322] [2022-07-19 21:26:00,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861931322] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:00,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:00,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:00,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349607478] [2022-07-19 21:26:00,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:00,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:00,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:00,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:00,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:00,830 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:00,831 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 241 transitions, 1750 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,831 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:00,831 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:00,831 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:01,318 INFO L129 PetriNetUnfolder]: 398/1931 cut-off events. [2022-07-19 21:26:01,319 INFO L130 PetriNetUnfolder]: For 11676/11789 co-relation queries the response was YES. [2022-07-19 21:26:01,333 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7781 conditions, 1931 events. 398/1931 cut-off events. For 11676/11789 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14758 event pairs, 280 based on Foata normal form. 4/1841 useless extension candidates. Maximal degree in co-relation 7686. Up to 831 conditions per place. [2022-07-19 21:26:01,338 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 88 selfloop transitions, 37 changer transitions 36/306 dead transitions. [2022-07-19 21:26:01,338 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 306 transitions, 2972 flow [2022-07-19 21:26:01,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-19 21:26:01,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-19 21:26:01,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3057 transitions. [2022-07-19 21:26:01,340 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7638680659670165 [2022-07-19 21:26:01,340 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3057 transitions. [2022-07-19 21:26:01,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3057 transitions. [2022-07-19 21:26:01,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:01,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3057 transitions. [2022-07-19 21:26:01,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.91304347826087) internal successors, (3057), 23 states have internal predecessors, (3057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,345 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,345 INFO L186 Difference]: Start difference. First operand has 314 places, 241 transitions, 1750 flow. Second operand 23 states and 3057 transitions. [2022-07-19 21:26:01,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 306 transitions, 2972 flow [2022-07-19 21:26:01,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 306 transitions, 2814 flow, removed 62 selfloop flow, removed 12 redundant places. [2022-07-19 21:26:01,387 INFO L242 Difference]: Finished difference. Result has 325 places, 251 transitions, 1980 flow [2022-07-19 21:26:01,388 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1667, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1980, PETRI_PLACES=325, PETRI_TRANSITIONS=251} [2022-07-19 21:26:01,388 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 168 predicate places. [2022-07-19 21:26:01,388 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 251 transitions, 1980 flow [2022-07-19 21:26:01,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,389 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:01,389 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] [2022-07-19 21:26:01,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-19 21:26:01,389 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:01,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:01,389 INFO L85 PathProgramCache]: Analyzing trace with hash 138356410, now seen corresponding path program 27 times [2022-07-19 21:26:01,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:01,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893783622] [2022-07-19 21:26:01,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:01,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:01,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:01,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:01,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893783622] [2022-07-19 21:26:01,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893783622] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:01,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:01,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:01,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131294461] [2022-07-19 21:26:01,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:01,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:01,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:01,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:01,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:01,496 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:01,497 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 251 transitions, 1980 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,497 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:01,497 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:01,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:02,026 INFO L129 PetriNetUnfolder]: 395/1924 cut-off events. [2022-07-19 21:26:02,026 INFO L130 PetriNetUnfolder]: For 12200/12316 co-relation queries the response was YES. [2022-07-19 21:26:02,041 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7852 conditions, 1924 events. 395/1924 cut-off events. For 12200/12316 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14645 event pairs, 277 based on Foata normal form. 5/1836 useless extension candidates. Maximal degree in co-relation 7751. Up to 829 conditions per place. [2022-07-19 21:26:02,046 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 97 selfloop transitions, 33 changer transitions 37/312 dead transitions. [2022-07-19 21:26:02,046 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 312 transitions, 3228 flow [2022-07-19 21:26:02,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:26:02,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:26:02,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3190 transitions. [2022-07-19 21:26:02,048 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7638888888888888 [2022-07-19 21:26:02,048 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3190 transitions. [2022-07-19 21:26:02,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3190 transitions. [2022-07-19 21:26:02,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:02,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3190 transitions. [2022-07-19 21:26:02,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.91666666666666) internal successors, (3190), 24 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,054 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,054 INFO L186 Difference]: Start difference. First operand has 325 places, 251 transitions, 1980 flow. Second operand 24 states and 3190 transitions. [2022-07-19 21:26:02,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 312 transitions, 3228 flow [2022-07-19 21:26:02,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 312 transitions, 3002 flow, removed 83 selfloop flow, removed 14 redundant places. [2022-07-19 21:26:02,098 INFO L242 Difference]: Finished difference. Result has 335 places, 255 transitions, 2075 flow [2022-07-19 21:26:02,098 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1866, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2075, PETRI_PLACES=335, PETRI_TRANSITIONS=255} [2022-07-19 21:26:02,098 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 178 predicate places. [2022-07-19 21:26:02,099 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 255 transitions, 2075 flow [2022-07-19 21:26:02,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,099 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:02,099 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] [2022-07-19 21:26:02,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-19 21:26:02,099 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:02,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:02,100 INFO L85 PathProgramCache]: Analyzing trace with hash -489816904, now seen corresponding path program 28 times [2022-07-19 21:26:02,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:02,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473767590] [2022-07-19 21:26:02,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:02,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:02,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:02,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:02,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473767590] [2022-07-19 21:26:02,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473767590] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:02,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:02,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:02,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629174257] [2022-07-19 21:26:02,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:02,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:02,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:02,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:02,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:02,207 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:02,208 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 255 transitions, 2075 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,208 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:02,208 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:02,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:02,708 INFO L129 PetriNetUnfolder]: 389/1912 cut-off events. [2022-07-19 21:26:02,708 INFO L130 PetriNetUnfolder]: For 11873/11989 co-relation queries the response was YES. [2022-07-19 21:26:02,721 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7714 conditions, 1912 events. 389/1912 cut-off events. For 11873/11989 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14611 event pairs, 273 based on Foata normal form. 5/1827 useless extension candidates. Maximal degree in co-relation 7609. Up to 831 conditions per place. [2022-07-19 21:26:02,725 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 101 selfloop transitions, 35 changer transitions 32/313 dead transitions. [2022-07-19 21:26:02,725 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 313 transitions, 3119 flow [2022-07-19 21:26:02,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:26:02,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:26:02,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2663 transitions. [2022-07-19 21:26:02,727 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7652298850574712 [2022-07-19 21:26:02,727 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2663 transitions. [2022-07-19 21:26:02,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2663 transitions. [2022-07-19 21:26:02,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:02,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2663 transitions. [2022-07-19 21:26:02,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.15) internal successors, (2663), 20 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,731 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,731 INFO L186 Difference]: Start difference. First operand has 335 places, 255 transitions, 2075 flow. Second operand 20 states and 2663 transitions. [2022-07-19 21:26:02,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 313 transitions, 3119 flow [2022-07-19 21:26:02,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 313 transitions, 2953 flow, removed 68 selfloop flow, removed 12 redundant places. [2022-07-19 21:26:02,778 INFO L242 Difference]: Finished difference. Result has 336 places, 262 transitions, 2194 flow [2022-07-19 21:26:02,778 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1968, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2194, PETRI_PLACES=336, PETRI_TRANSITIONS=262} [2022-07-19 21:26:02,778 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 179 predicate places. [2022-07-19 21:26:02,778 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 262 transitions, 2194 flow [2022-07-19 21:26:02,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,779 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:02,779 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] [2022-07-19 21:26:02,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-19 21:26:02,779 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:02,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:02,779 INFO L85 PathProgramCache]: Analyzing trace with hash -966183238, now seen corresponding path program 29 times [2022-07-19 21:26:02,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:02,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765998722] [2022-07-19 21:26:02,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:02,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:02,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:02,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:02,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765998722] [2022-07-19 21:26:02,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765998722] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:02,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:02,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:02,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601193344] [2022-07-19 21:26:02,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:02,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:02,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:02,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:02,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:02,880 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:02,881 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 262 transitions, 2194 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,881 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:02,881 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:02,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:03,367 INFO L129 PetriNetUnfolder]: 393/1931 cut-off events. [2022-07-19 21:26:03,367 INFO L130 PetriNetUnfolder]: For 11584/11702 co-relation queries the response was YES. [2022-07-19 21:26:03,382 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7828 conditions, 1931 events. 393/1931 cut-off events. For 11584/11702 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14744 event pairs, 273 based on Foata normal form. 5/1844 useless extension candidates. Maximal degree in co-relation 7724. Up to 834 conditions per place. [2022-07-19 21:26:03,388 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 90 selfloop transitions, 48 changer transitions 31/314 dead transitions. [2022-07-19 21:26:03,388 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 314 transitions, 3260 flow [2022-07-19 21:26:03,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 21:26:03,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-19 21:26:03,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2535 transitions. [2022-07-19 21:26:03,390 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7667876588021778 [2022-07-19 21:26:03,390 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2535 transitions. [2022-07-19 21:26:03,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2535 transitions. [2022-07-19 21:26:03,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:03,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2535 transitions. [2022-07-19 21:26:03,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.42105263157896) internal successors, (2535), 19 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:03,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:03,394 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:03,394 INFO L186 Difference]: Start difference. First operand has 336 places, 262 transitions, 2194 flow. Second operand 19 states and 2535 transitions. [2022-07-19 21:26:03,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 314 transitions, 3260 flow [2022-07-19 21:26:03,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 314 transitions, 3146 flow, removed 35 selfloop flow, removed 7 redundant places. [2022-07-19 21:26:03,448 INFO L242 Difference]: Finished difference. Result has 347 places, 270 transitions, 2409 flow [2022-07-19 21:26:03,449 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2104, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2409, PETRI_PLACES=347, PETRI_TRANSITIONS=270} [2022-07-19 21:26:03,449 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 190 predicate places. [2022-07-19 21:26:03,450 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 270 transitions, 2409 flow [2022-07-19 21:26:03,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:03,450 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:03,450 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] [2022-07-19 21:26:03,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-19 21:26:03,451 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:03,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:03,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1556814568, now seen corresponding path program 30 times [2022-07-19 21:26:03,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:03,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150848638] [2022-07-19 21:26:03,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:03,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:03,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:03,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:03,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150848638] [2022-07-19 21:26:03,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150848638] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:03,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:03,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:03,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332508261] [2022-07-19 21:26:03,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:03,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:03,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:03,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:03,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:03,568 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:03,569 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 270 transitions, 2409 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:03,569 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:03,569 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:03,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:04,031 INFO L129 PetriNetUnfolder]: 390/1923 cut-off events. [2022-07-19 21:26:04,031 INFO L130 PetriNetUnfolder]: For 11801/11915 co-relation queries the response was YES. [2022-07-19 21:26:04,046 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7866 conditions, 1923 events. 390/1923 cut-off events. For 11801/11915 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14712 event pairs, 270 based on Foata normal form. 4/1835 useless extension candidates. Maximal degree in co-relation 7756. Up to 832 conditions per place. [2022-07-19 21:26:04,052 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 97 selfloop transitions, 44 changer transitions 31/317 dead transitions. [2022-07-19 21:26:04,052 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 317 transitions, 3423 flow [2022-07-19 21:26:04,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:26:04,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:26:04,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2666 transitions. [2022-07-19 21:26:04,077 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7660919540229885 [2022-07-19 21:26:04,077 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2666 transitions. [2022-07-19 21:26:04,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2666 transitions. [2022-07-19 21:26:04,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:04,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2666 transitions. [2022-07-19 21:26:04,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.3) internal successors, (2666), 20 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,086 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,086 INFO L186 Difference]: Start difference. First operand has 347 places, 270 transitions, 2409 flow. Second operand 20 states and 2666 transitions. [2022-07-19 21:26:04,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 317 transitions, 3423 flow [2022-07-19 21:26:04,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 317 transitions, 3258 flow, removed 36 selfloop flow, removed 9 redundant places. [2022-07-19 21:26:04,144 INFO L242 Difference]: Finished difference. Result has 358 places, 276 transitions, 2544 flow [2022-07-19 21:26:04,145 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2281, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2544, PETRI_PLACES=358, PETRI_TRANSITIONS=276} [2022-07-19 21:26:04,145 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 201 predicate places. [2022-07-19 21:26:04,145 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 276 transitions, 2544 flow [2022-07-19 21:26:04,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,146 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:04,146 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] [2022-07-19 21:26:04,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-19 21:26:04,146 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:04,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:04,146 INFO L85 PathProgramCache]: Analyzing trace with hash -584237514, now seen corresponding path program 31 times [2022-07-19 21:26:04,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:04,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653571139] [2022-07-19 21:26:04,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:04,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:04,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:04,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:04,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653571139] [2022-07-19 21:26:04,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653571139] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:04,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:04,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:04,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181413688] [2022-07-19 21:26:04,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:04,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:04,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:04,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:04,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:04,259 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:04,260 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 276 transitions, 2544 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,260 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:04,260 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:04,260 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:04,750 INFO L129 PetriNetUnfolder]: 387/1914 cut-off events. [2022-07-19 21:26:04,750 INFO L130 PetriNetUnfolder]: For 11854/11964 co-relation queries the response was YES. [2022-07-19 21:26:04,765 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7839 conditions, 1914 events. 387/1914 cut-off events. For 11854/11964 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14638 event pairs, 266 based on Foata normal form. 3/1824 useless extension candidates. Maximal degree in co-relation 7724. Up to 828 conditions per place. [2022-07-19 21:26:04,786 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 107 selfloop transitions, 38 changer transitions 32/322 dead transitions. [2022-07-19 21:26:04,786 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 322 transitions, 3565 flow [2022-07-19 21:26:04,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:26:04,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:26:04,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2668 transitions. [2022-07-19 21:26:04,801 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2022-07-19 21:26:04,801 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2668 transitions. [2022-07-19 21:26:04,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2668 transitions. [2022-07-19 21:26:04,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:04,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2668 transitions. [2022-07-19 21:26:04,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.4) internal successors, (2668), 20 states have internal predecessors, (2668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,804 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,804 INFO L186 Difference]: Start difference. First operand has 358 places, 276 transitions, 2544 flow. Second operand 20 states and 2668 transitions. [2022-07-19 21:26:04,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 322 transitions, 3565 flow [2022-07-19 21:26:04,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 322 transitions, 3421 flow, removed 43 selfloop flow, removed 8 redundant places. [2022-07-19 21:26:04,938 INFO L242 Difference]: Finished difference. Result has 368 places, 280 transitions, 2630 flow [2022-07-19 21:26:04,939 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2426, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2630, PETRI_PLACES=368, PETRI_TRANSITIONS=280} [2022-07-19 21:26:04,939 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 211 predicate places. [2022-07-19 21:26:04,939 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 280 transitions, 2630 flow [2022-07-19 21:26:04,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,940 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:04,940 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] [2022-07-19 21:26:04,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-19 21:26:04,940 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:04,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:04,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1812748130, now seen corresponding path program 32 times [2022-07-19 21:26:04,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:04,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120618139] [2022-07-19 21:26:04,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:04,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:05,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:05,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:05,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120618139] [2022-07-19 21:26:05,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120618139] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:05,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:05,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:05,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888745748] [2022-07-19 21:26:05,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:05,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:05,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:05,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:05,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:05,035 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:05,035 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 280 transitions, 2630 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,035 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:05,036 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:05,036 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:05,535 INFO L129 PetriNetUnfolder]: 377/1890 cut-off events. [2022-07-19 21:26:05,536 INFO L130 PetriNetUnfolder]: For 11403/11513 co-relation queries the response was YES. [2022-07-19 21:26:05,549 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7611 conditions, 1890 events. 377/1890 cut-off events. For 11403/11513 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14442 event pairs, 265 based on Foata normal form. 3/1804 useless extension candidates. Maximal degree in co-relation 7492. Up to 821 conditions per place. [2022-07-19 21:26:05,553 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 107 selfloop transitions, 20 changer transitions 47/319 dead transitions. [2022-07-19 21:26:05,553 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 319 transitions, 3350 flow [2022-07-19 21:26:05,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 21:26:05,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-19 21:26:05,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2532 transitions. [2022-07-19 21:26:05,558 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7658802177858439 [2022-07-19 21:26:05,558 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2532 transitions. [2022-07-19 21:26:05,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2532 transitions. [2022-07-19 21:26:05,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:05,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2532 transitions. [2022-07-19 21:26:05,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.26315789473685) internal successors, (2532), 19 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,562 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,562 INFO L186 Difference]: Start difference. First operand has 368 places, 280 transitions, 2630 flow. Second operand 19 states and 2532 transitions. [2022-07-19 21:26:05,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 319 transitions, 3350 flow [2022-07-19 21:26:05,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 319 transitions, 3221 flow, removed 46 selfloop flow, removed 7 redundant places. [2022-07-19 21:26:05,621 INFO L242 Difference]: Finished difference. Result has 374 places, 256 transitions, 2133 flow [2022-07-19 21:26:05,621 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2507, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2133, PETRI_PLACES=374, PETRI_TRANSITIONS=256} [2022-07-19 21:26:05,622 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 217 predicate places. [2022-07-19 21:26:05,622 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 256 transitions, 2133 flow [2022-07-19 21:26:05,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,623 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:05,623 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] [2022-07-19 21:26:05,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-19 21:26:05,624 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:05,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:05,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1977702522, now seen corresponding path program 33 times [2022-07-19 21:26:05,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:05,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079797772] [2022-07-19 21:26:05,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:05,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:05,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:05,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:05,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079797772] [2022-07-19 21:26:05,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079797772] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:05,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:05,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:05,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064373535] [2022-07-19 21:26:05,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:05,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:05,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:05,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:05,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:05,724 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:05,724 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 256 transitions, 2133 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,724 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:05,724 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:05,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:06,200 INFO L129 PetriNetUnfolder]: 372/1864 cut-off events. [2022-07-19 21:26:06,200 INFO L130 PetriNetUnfolder]: For 10777/10887 co-relation queries the response was YES. [2022-07-19 21:26:06,216 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7384 conditions, 1864 events. 372/1864 cut-off events. For 10777/10887 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14145 event pairs, 265 based on Foata normal form. 3/1775 useless extension candidates. Maximal degree in co-relation 7264. Up to 818 conditions per place. [2022-07-19 21:26:06,221 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 88 selfloop transitions, 23 changer transitions 41/297 dead transitions. [2022-07-19 21:26:06,221 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 297 transitions, 2936 flow [2022-07-19 21:26:06,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 21:26:06,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-19 21:26:06,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2795 transitions. [2022-07-19 21:26:06,223 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7649151614668857 [2022-07-19 21:26:06,223 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2795 transitions. [2022-07-19 21:26:06,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2795 transitions. [2022-07-19 21:26:06,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:06,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2795 transitions. [2022-07-19 21:26:06,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 133.0952380952381) internal successors, (2795), 21 states have internal predecessors, (2795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,227 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,227 INFO L186 Difference]: Start difference. First operand has 374 places, 256 transitions, 2133 flow. Second operand 21 states and 2795 transitions. [2022-07-19 21:26:06,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 297 transitions, 2936 flow [2022-07-19 21:26:06,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 297 transitions, 2720 flow, removed 33 selfloop flow, removed 24 redundant places. [2022-07-19 21:26:06,281 INFO L242 Difference]: Finished difference. Result has 350 places, 247 transitions, 1877 flow [2022-07-19 21:26:06,282 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1982, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1877, PETRI_PLACES=350, PETRI_TRANSITIONS=247} [2022-07-19 21:26:06,284 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 193 predicate places. [2022-07-19 21:26:06,284 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 247 transitions, 1877 flow [2022-07-19 21:26:06,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,284 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:06,284 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] [2022-07-19 21:26:06,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-19 21:26:06,284 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:06,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:06,285 INFO L85 PathProgramCache]: Analyzing trace with hash 297360238, now seen corresponding path program 34 times [2022-07-19 21:26:06,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:06,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208343891] [2022-07-19 21:26:06,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:06,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:06,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:06,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:06,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208343891] [2022-07-19 21:26:06,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208343891] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:06,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:06,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:06,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917679725] [2022-07-19 21:26:06,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:06,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:06,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:06,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:06,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:06,379 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:06,380 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 247 transitions, 1877 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,380 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:06,380 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:06,380 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:06,910 INFO L129 PetriNetUnfolder]: 363/1837 cut-off events. [2022-07-19 21:26:06,910 INFO L130 PetriNetUnfolder]: For 9577/9687 co-relation queries the response was YES. [2022-07-19 21:26:06,925 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6932 conditions, 1837 events. 363/1837 cut-off events. For 9577/9687 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 13955 event pairs, 266 based on Foata normal form. 3/1748 useless extension candidates. Maximal degree in co-relation 6820. Up to 812 conditions per place. [2022-07-19 21:26:06,929 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 75 selfloop transitions, 18 changer transitions 42/280 dead transitions. [2022-07-19 21:26:06,930 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 280 transitions, 2477 flow [2022-07-19 21:26:06,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:26:06,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:26:06,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2921 transitions. [2022-07-19 21:26:06,932 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7630616509926855 [2022-07-19 21:26:06,933 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2921 transitions. [2022-07-19 21:26:06,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2921 transitions. [2022-07-19 21:26:06,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:06,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2921 transitions. [2022-07-19 21:26:06,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.77272727272728) internal successors, (2921), 22 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,937 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,937 INFO L186 Difference]: Start difference. First operand has 350 places, 247 transitions, 1877 flow. Second operand 22 states and 2921 transitions. [2022-07-19 21:26:06,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 280 transitions, 2477 flow [2022-07-19 21:26:06,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 280 transitions, 2322 flow, removed 25 selfloop flow, removed 24 redundant places. [2022-07-19 21:26:06,978 INFO L242 Difference]: Finished difference. Result has 336 places, 230 transitions, 1544 flow [2022-07-19 21:26:06,978 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1544, PETRI_PLACES=336, PETRI_TRANSITIONS=230} [2022-07-19 21:26:06,979 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 179 predicate places. [2022-07-19 21:26:06,979 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 230 transitions, 1544 flow [2022-07-19 21:26:06,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,979 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:06,979 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] [2022-07-19 21:26:06,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-19 21:26:06,980 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:06,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:06,980 INFO L85 PathProgramCache]: Analyzing trace with hash -218078410, now seen corresponding path program 35 times [2022-07-19 21:26:06,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:06,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843589044] [2022-07-19 21:26:06,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:06,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:07,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:07,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:07,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843589044] [2022-07-19 21:26:07,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843589044] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:07,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:07,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:07,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123523799] [2022-07-19 21:26:07,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:07,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:07,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:07,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:07,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:07,084 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:07,085 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 230 transitions, 1544 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,085 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:07,085 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:07,085 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:07,522 INFO L129 PetriNetUnfolder]: 349/1752 cut-off events. [2022-07-19 21:26:07,522 INFO L130 PetriNetUnfolder]: For 8722/8832 co-relation queries the response was YES. [2022-07-19 21:26:07,535 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6473 conditions, 1752 events. 349/1752 cut-off events. For 8722/8832 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 13020 event pairs, 263 based on Foata normal form. 3/1665 useless extension candidates. Maximal degree in co-relation 6369. Up to 788 conditions per place. [2022-07-19 21:26:07,538 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 64 selfloop transitions, 2 changer transitions 49/258 dead transitions. [2022-07-19 21:26:07,539 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 258 transitions, 2015 flow [2022-07-19 21:26:07,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:26:07,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:26:07,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2653 transitions. [2022-07-19 21:26:07,541 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7623563218390804 [2022-07-19 21:26:07,541 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2653 transitions. [2022-07-19 21:26:07,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2653 transitions. [2022-07-19 21:26:07,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:07,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2653 transitions. [2022-07-19 21:26:07,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.65) internal successors, (2653), 20 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,545 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,545 INFO L186 Difference]: Start difference. First operand has 336 places, 230 transitions, 1544 flow. Second operand 20 states and 2653 transitions. [2022-07-19 21:26:07,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 258 transitions, 2015 flow [2022-07-19 21:26:07,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 258 transitions, 1885 flow, removed 25 selfloop flow, removed 25 redundant places. [2022-07-19 21:26:07,577 INFO L242 Difference]: Finished difference. Result has 311 places, 201 transitions, 1054 flow [2022-07-19 21:26:07,577 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1054, PETRI_PLACES=311, PETRI_TRANSITIONS=201} [2022-07-19 21:26:07,577 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 154 predicate places. [2022-07-19 21:26:07,578 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 201 transitions, 1054 flow [2022-07-19 21:26:07,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,578 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:07,578 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] [2022-07-19 21:26:07,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-19 21:26:07,578 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:07,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:07,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1844961244, now seen corresponding path program 2 times [2022-07-19 21:26:07,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:07,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362907260] [2022-07-19 21:26:07,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:07,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:07,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:07,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:07,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362907260] [2022-07-19 21:26:07,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362907260] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:07,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:07,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:07,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294786691] [2022-07-19 21:26:07,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:07,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:07,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:07,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:07,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:07,669 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:07,670 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 201 transitions, 1054 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,670 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:07,670 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:07,670 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:08,134 INFO L129 PetriNetUnfolder]: 373/1781 cut-off events. [2022-07-19 21:26:08,134 INFO L130 PetriNetUnfolder]: For 8172/8238 co-relation queries the response was YES. [2022-07-19 21:26:08,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6350 conditions, 1781 events. 373/1781 cut-off events. For 8172/8238 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13170 event pairs, 234 based on Foata normal form. 10/1699 useless extension candidates. Maximal degree in co-relation 6260. Up to 732 conditions per place. [2022-07-19 21:26:08,145 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 93 selfloop transitions, 14 changer transitions 32/283 dead transitions. [2022-07-19 21:26:08,145 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 283 transitions, 2087 flow [2022-07-19 21:26:08,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:26:08,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:26:08,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2926 transitions. [2022-07-19 21:26:08,147 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2022-07-19 21:26:08,147 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2926 transitions. [2022-07-19 21:26:08,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2926 transitions. [2022-07-19 21:26:08,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:08,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2926 transitions. [2022-07-19 21:26:08,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 133.0) internal successors, (2926), 22 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,152 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,152 INFO L186 Difference]: Start difference. First operand has 311 places, 201 transitions, 1054 flow. Second operand 22 states and 2926 transitions. [2022-07-19 21:26:08,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 283 transitions, 2087 flow [2022-07-19 21:26:08,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 283 transitions, 2001 flow, removed 35 selfloop flow, removed 25 redundant places. [2022-07-19 21:26:08,174 INFO L242 Difference]: Finished difference. Result has 285 places, 214 transitions, 1204 flow [2022-07-19 21:26:08,174 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1204, PETRI_PLACES=285, PETRI_TRANSITIONS=214} [2022-07-19 21:26:08,175 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 128 predicate places. [2022-07-19 21:26:08,175 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 214 transitions, 1204 flow [2022-07-19 21:26:08,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,175 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:08,175 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] [2022-07-19 21:26:08,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-19 21:26:08,176 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:08,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:08,176 INFO L85 PathProgramCache]: Analyzing trace with hash -206622138, now seen corresponding path program 3 times [2022-07-19 21:26:08,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:08,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459801049] [2022-07-19 21:26:08,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:08,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:08,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:08,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:08,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459801049] [2022-07-19 21:26:08,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459801049] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:08,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:08,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:08,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70911408] [2022-07-19 21:26:08,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:08,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:08,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:08,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:08,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:08,294 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:08,295 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 214 transitions, 1204 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,295 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:08,295 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:08,295 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:08,794 INFO L129 PetriNetUnfolder]: 372/1799 cut-off events. [2022-07-19 21:26:08,794 INFO L130 PetriNetUnfolder]: For 11216/11282 co-relation queries the response was YES. [2022-07-19 21:26:08,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7063 conditions, 1799 events. 372/1799 cut-off events. For 11216/11282 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13460 event pairs, 219 based on Foata normal form. 10/1725 useless extension candidates. Maximal degree in co-relation 6976. Up to 679 conditions per place. [2022-07-19 21:26:08,811 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 155 selfloop transitions, 12 changer transitions 46/357 dead transitions. [2022-07-19 21:26:08,811 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 357 transitions, 3090 flow [2022-07-19 21:26:08,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-19 21:26:08,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-19 21:26:08,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4111 transitions. [2022-07-19 21:26:08,813 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7621431219873934 [2022-07-19 21:26:08,813 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4111 transitions. [2022-07-19 21:26:08,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4111 transitions. [2022-07-19 21:26:08,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:08,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4111 transitions. [2022-07-19 21:26:08,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 132.61290322580646) internal successors, (4111), 31 states have internal predecessors, (4111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,819 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,819 INFO L186 Difference]: Start difference. First operand has 285 places, 214 transitions, 1204 flow. Second operand 31 states and 4111 transitions. [2022-07-19 21:26:08,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 357 transitions, 3090 flow [2022-07-19 21:26:08,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 357 transitions, 2902 flow, removed 94 selfloop flow, removed 9 redundant places. [2022-07-19 21:26:08,852 INFO L242 Difference]: Finished difference. Result has 319 places, 217 transitions, 1301 flow [2022-07-19 21:26:08,853 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1301, PETRI_PLACES=319, PETRI_TRANSITIONS=217} [2022-07-19 21:26:08,853 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 162 predicate places. [2022-07-19 21:26:08,853 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 217 transitions, 1301 flow [2022-07-19 21:26:08,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,854 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:08,854 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] [2022-07-19 21:26:08,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-19 21:26:08,854 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:08,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:08,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1403486140, now seen corresponding path program 4 times [2022-07-19 21:26:08,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:08,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061572942] [2022-07-19 21:26:08,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:08,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:08,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:08,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:08,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061572942] [2022-07-19 21:26:08,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061572942] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:08,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:08,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:08,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441852980] [2022-07-19 21:26:08,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:08,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:08,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:08,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:08,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:08,937 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:08,938 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 217 transitions, 1301 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,938 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:08,938 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:08,938 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:09,478 INFO L129 PetriNetUnfolder]: 393/1881 cut-off events. [2022-07-19 21:26:09,478 INFO L130 PetriNetUnfolder]: For 14911/14977 co-relation queries the response was YES. [2022-07-19 21:26:09,493 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7971 conditions, 1881 events. 393/1881 cut-off events. For 14911/14977 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 14275 event pairs, 246 based on Foata normal form. 10/1800 useless extension candidates. Maximal degree in co-relation 7866. Up to 787 conditions per place. [2022-07-19 21:26:09,498 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 112 selfloop transitions, 16 changer transitions 40/312 dead transitions. [2022-07-19 21:26:09,498 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 312 transitions, 3030 flow [2022-07-19 21:26:09,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-19 21:26:09,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-19 21:26:09,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3707 transitions. [2022-07-19 21:26:09,500 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7608784893267652 [2022-07-19 21:26:09,500 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3707 transitions. [2022-07-19 21:26:09,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3707 transitions. [2022-07-19 21:26:09,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:09,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3707 transitions. [2022-07-19 21:26:09,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.39285714285714) internal successors, (3707), 28 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,505 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,505 INFO L186 Difference]: Start difference. First operand has 319 places, 217 transitions, 1301 flow. Second operand 28 states and 3707 transitions. [2022-07-19 21:26:09,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 312 transitions, 3030 flow [2022-07-19 21:26:09,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 312 transitions, 2712 flow, removed 140 selfloop flow, removed 20 redundant places. [2022-07-19 21:26:09,548 INFO L242 Difference]: Finished difference. Result has 324 places, 227 transitions, 1444 flow [2022-07-19 21:26:09,549 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1231, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1444, PETRI_PLACES=324, PETRI_TRANSITIONS=227} [2022-07-19 21:26:09,549 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 167 predicate places. [2022-07-19 21:26:09,549 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 227 transitions, 1444 flow [2022-07-19 21:26:09,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,549 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:09,550 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] [2022-07-19 21:26:09,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-19 21:26:09,550 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:09,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:09,550 INFO L85 PathProgramCache]: Analyzing trace with hash -951681074, now seen corresponding path program 5 times [2022-07-19 21:26:09,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:09,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881202780] [2022-07-19 21:26:09,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:09,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:09,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:09,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:09,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:09,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881202780] [2022-07-19 21:26:09,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881202780] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:09,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:09,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:09,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732413337] [2022-07-19 21:26:09,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:09,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:09,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:09,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:09,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:09,643 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:09,643 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 227 transitions, 1444 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,643 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:09,644 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:09,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:10,237 INFO L129 PetriNetUnfolder]: 420/2018 cut-off events. [2022-07-19 21:26:10,237 INFO L130 PetriNetUnfolder]: For 16269/16340 co-relation queries the response was YES. [2022-07-19 21:26:10,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8639 conditions, 2018 events. 420/2018 cut-off events. For 16269/16340 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 15563 event pairs, 267 based on Foata normal form. 10/1939 useless extension candidates. Maximal degree in co-relation 8532. Up to 742 conditions per place. [2022-07-19 21:26:10,259 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 102 selfloop transitions, 24 changer transitions 40/310 dead transitions. [2022-07-19 21:26:10,259 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 310 transitions, 3043 flow [2022-07-19 21:26:10,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 21:26:10,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-19 21:26:10,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3449 transitions. [2022-07-19 21:26:10,261 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7623784261715296 [2022-07-19 21:26:10,261 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3449 transitions. [2022-07-19 21:26:10,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3449 transitions. [2022-07-19 21:26:10,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:10,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3449 transitions. [2022-07-19 21:26:10,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.65384615384616) internal successors, (3449), 26 states have internal predecessors, (3449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:10,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:10,266 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:10,266 INFO L186 Difference]: Start difference. First operand has 324 places, 227 transitions, 1444 flow. Second operand 26 states and 3449 transitions. [2022-07-19 21:26:10,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 310 transitions, 3043 flow [2022-07-19 21:26:10,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 310 transitions, 2791 flow, removed 126 selfloop flow, removed 17 redundant places. [2022-07-19 21:26:10,312 INFO L242 Difference]: Finished difference. Result has 335 places, 237 transitions, 1670 flow [2022-07-19 21:26:10,312 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1388, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1670, PETRI_PLACES=335, PETRI_TRANSITIONS=237} [2022-07-19 21:26:10,313 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 178 predicate places. [2022-07-19 21:26:10,313 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 237 transitions, 1670 flow [2022-07-19 21:26:10,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:10,313 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:10,313 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] [2022-07-19 21:26:10,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-19 21:26:10,314 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:10,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:10,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1565654670, now seen corresponding path program 6 times [2022-07-19 21:26:10,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:10,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311122212] [2022-07-19 21:26:10,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:10,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:10,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:10,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:10,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311122212] [2022-07-19 21:26:10,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311122212] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:10,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:10,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:10,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940490040] [2022-07-19 21:26:10,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:10,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:10,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:10,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:10,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:10,405 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:10,405 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 237 transitions, 1670 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:10,405 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:10,405 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:10,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:10,990 INFO L129 PetriNetUnfolder]: 413/1953 cut-off events. [2022-07-19 21:26:10,997 INFO L130 PetriNetUnfolder]: For 18007/18086 co-relation queries the response was YES. [2022-07-19 21:26:11,014 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8933 conditions, 1953 events. 413/1953 cut-off events. For 18007/18086 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 14975 event pairs, 263 based on Foata normal form. 11/1864 useless extension candidates. Maximal degree in co-relation 8819. Up to 832 conditions per place. [2022-07-19 21:26:11,018 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 118 selfloop transitions, 30 changer transitions 36/328 dead transitions. [2022-07-19 21:26:11,018 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 328 transitions, 3657 flow [2022-07-19 21:26:11,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-19 21:26:11,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-07-19 21:26:11,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3312 transitions. [2022-07-19 21:26:11,020 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7613793103448275 [2022-07-19 21:26:11,020 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3312 transitions. [2022-07-19 21:26:11,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3312 transitions. [2022-07-19 21:26:11,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:11,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3312 transitions. [2022-07-19 21:26:11,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 132.48) internal successors, (3312), 25 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:11,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:11,024 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:11,024 INFO L186 Difference]: Start difference. First operand has 335 places, 237 transitions, 1670 flow. Second operand 25 states and 3312 transitions. [2022-07-19 21:26:11,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 328 transitions, 3657 flow [2022-07-19 21:26:11,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 328 transitions, 3270 flow, removed 184 selfloop flow, removed 16 redundant places. [2022-07-19 21:26:11,131 INFO L242 Difference]: Finished difference. Result has 346 places, 254 transitions, 2026 flow [2022-07-19 21:26:11,132 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2026, PETRI_PLACES=346, PETRI_TRANSITIONS=254} [2022-07-19 21:26:11,132 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 189 predicate places. [2022-07-19 21:26:11,132 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 254 transitions, 2026 flow [2022-07-19 21:26:11,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:11,132 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:11,132 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] [2022-07-19 21:26:11,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-19 21:26:11,132 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:11,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:11,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1053349864, now seen corresponding path program 7 times [2022-07-19 21:26:11,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:11,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344819487] [2022-07-19 21:26:11,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:11,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:11,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:11,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:11,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344819487] [2022-07-19 21:26:11,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344819487] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:11,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:11,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:11,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351808369] [2022-07-19 21:26:11,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:11,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:11,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:11,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:11,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:11,261 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:11,267 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 254 transitions, 2026 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:11,267 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:11,267 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:11,267 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:11,795 INFO L129 PetriNetUnfolder]: 409/1958 cut-off events. [2022-07-19 21:26:11,795 INFO L130 PetriNetUnfolder]: For 18408/18495 co-relation queries the response was YES. [2022-07-19 21:26:11,813 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8973 conditions, 1958 events. 409/1958 cut-off events. For 18408/18495 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 15071 event pairs, 254 based on Foata normal form. 16/1878 useless extension candidates. Maximal degree in co-relation 8853. Up to 816 conditions per place. [2022-07-19 21:26:11,818 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 123 selfloop transitions, 34 changer transitions 34/335 dead transitions. [2022-07-19 21:26:11,818 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 335 transitions, 3754 flow [2022-07-19 21:26:11,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:26:11,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:26:11,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3183 transitions. [2022-07-19 21:26:11,820 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7622126436781609 [2022-07-19 21:26:11,820 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3183 transitions. [2022-07-19 21:26:11,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3183 transitions. [2022-07-19 21:26:11,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:11,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3183 transitions. [2022-07-19 21:26:11,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.625) internal successors, (3183), 24 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:11,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:11,824 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:11,824 INFO L186 Difference]: Start difference. First operand has 346 places, 254 transitions, 2026 flow. Second operand 24 states and 3183 transitions. [2022-07-19 21:26:11,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 335 transitions, 3754 flow [2022-07-19 21:26:11,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 335 transitions, 3292 flow, removed 214 selfloop flow, removed 14 redundant places. [2022-07-19 21:26:11,884 INFO L242 Difference]: Finished difference. Result has 355 places, 261 transitions, 2068 flow [2022-07-19 21:26:11,884 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1824, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2068, PETRI_PLACES=355, PETRI_TRANSITIONS=261} [2022-07-19 21:26:11,884 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 198 predicate places. [2022-07-19 21:26:11,884 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 261 transitions, 2068 flow [2022-07-19 21:26:11,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:11,885 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:11,885 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] [2022-07-19 21:26:11,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-19 21:26:11,885 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:11,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:11,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1020921776, now seen corresponding path program 8 times [2022-07-19 21:26:11,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:11,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558283983] [2022-07-19 21:26:11,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:11,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:11,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:11,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:11,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558283983] [2022-07-19 21:26:11,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558283983] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:11,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:11,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:11,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174747019] [2022-07-19 21:26:11,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:11,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:11,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:11,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:11,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:11,967 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:11,968 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 261 transitions, 2068 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:11,968 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:11,968 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:11,968 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:12,528 INFO L129 PetriNetUnfolder]: 408/2015 cut-off events. [2022-07-19 21:26:12,529 INFO L130 PetriNetUnfolder]: For 17400/17481 co-relation queries the response was YES. [2022-07-19 21:26:12,546 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8873 conditions, 2015 events. 408/2015 cut-off events. For 17400/17481 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 15661 event pairs, 275 based on Foata normal form. 10/1933 useless extension candidates. Maximal degree in co-relation 8751. Up to 803 conditions per place. [2022-07-19 21:26:12,551 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 122 selfloop transitions, 28 changer transitions 43/337 dead transitions. [2022-07-19 21:26:12,551 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 337 transitions, 3618 flow [2022-07-19 21:26:12,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-19 21:26:12,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-19 21:26:12,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3580 transitions. [2022-07-19 21:26:12,553 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7620263942103023 [2022-07-19 21:26:12,553 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3580 transitions. [2022-07-19 21:26:12,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3580 transitions. [2022-07-19 21:26:12,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:12,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3580 transitions. [2022-07-19 21:26:12,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.59259259259258) internal successors, (3580), 27 states have internal predecessors, (3580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:12,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:12,558 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:12,558 INFO L186 Difference]: Start difference. First operand has 355 places, 261 transitions, 2068 flow. Second operand 27 states and 3580 transitions. [2022-07-19 21:26:12,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 337 transitions, 3618 flow [2022-07-19 21:26:12,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 337 transitions, 3469 flow, removed 64 selfloop flow, removed 11 redundant places. [2022-07-19 21:26:12,619 INFO L242 Difference]: Finished difference. Result has 377 places, 265 transitions, 2217 flow [2022-07-19 21:26:12,619 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1999, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2217, PETRI_PLACES=377, PETRI_TRANSITIONS=265} [2022-07-19 21:26:12,620 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 220 predicate places. [2022-07-19 21:26:12,620 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 265 transitions, 2217 flow [2022-07-19 21:26:12,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:12,620 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:12,620 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] [2022-07-19 21:26:12,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-19 21:26:12,620 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:12,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:12,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1494954714, now seen corresponding path program 9 times [2022-07-19 21:26:12,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:12,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240894622] [2022-07-19 21:26:12,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:12,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:12,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:12,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:12,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240894622] [2022-07-19 21:26:12,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240894622] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:12,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:12,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:12,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541961555] [2022-07-19 21:26:12,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:12,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:12,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:12,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:12,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:12,727 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:12,728 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 265 transitions, 2217 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:12,728 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:12,728 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:12,728 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:13,214 INFO L129 PetriNetUnfolder]: 398/1963 cut-off events. [2022-07-19 21:26:13,214 INFO L130 PetriNetUnfolder]: For 17968/18066 co-relation queries the response was YES. [2022-07-19 21:26:13,233 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8828 conditions, 1963 events. 398/1963 cut-off events. For 17968/18066 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 15185 event pairs, 257 based on Foata normal form. 20/1887 useless extension candidates. Maximal degree in co-relation 8694. Up to 822 conditions per place. [2022-07-19 21:26:13,238 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 118 selfloop transitions, 36 changer transitions 32/330 dead transitions. [2022-07-19 21:26:13,238 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 330 transitions, 3617 flow [2022-07-19 21:26:13,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 21:26:13,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-19 21:26:13,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2529 transitions. [2022-07-19 21:26:13,240 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.76497277676951 [2022-07-19 21:26:13,240 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2529 transitions. [2022-07-19 21:26:13,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2529 transitions. [2022-07-19 21:26:13,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:13,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2529 transitions. [2022-07-19 21:26:13,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.10526315789474) internal successors, (2529), 19 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,243 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,243 INFO L186 Difference]: Start difference. First operand has 377 places, 265 transitions, 2217 flow. Second operand 19 states and 2529 transitions. [2022-07-19 21:26:13,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 330 transitions, 3617 flow [2022-07-19 21:26:13,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 330 transitions, 3423 flow, removed 75 selfloop flow, removed 21 redundant places. [2022-07-19 21:26:13,311 INFO L242 Difference]: Finished difference. Result has 364 places, 268 transitions, 2266 flow [2022-07-19 21:26:13,311 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2111, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2266, PETRI_PLACES=364, PETRI_TRANSITIONS=268} [2022-07-19 21:26:13,311 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 207 predicate places. [2022-07-19 21:26:13,311 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 268 transitions, 2266 flow [2022-07-19 21:26:13,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,312 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:13,312 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] [2022-07-19 21:26:13,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-19 21:26:13,312 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:13,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:13,312 INFO L85 PathProgramCache]: Analyzing trace with hash 2070079914, now seen corresponding path program 10 times [2022-07-19 21:26:13,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:13,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693666356] [2022-07-19 21:26:13,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:13,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:13,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:13,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:13,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693666356] [2022-07-19 21:26:13,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693666356] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:13,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:13,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:13,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077030188] [2022-07-19 21:26:13,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:13,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:13,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:13,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:13,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:13,390 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:13,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 268 transitions, 2266 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:13,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:13,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:13,889 INFO L129 PetriNetUnfolder]: 384/1916 cut-off events. [2022-07-19 21:26:13,889 INFO L130 PetriNetUnfolder]: For 15782/15870 co-relation queries the response was YES. [2022-07-19 21:26:13,903 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8339 conditions, 1916 events. 384/1916 cut-off events. For 15782/15870 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 14677 event pairs, 250 based on Foata normal form. 12/1836 useless extension candidates. Maximal degree in co-relation 8215. Up to 805 conditions per place. [2022-07-19 21:26:13,907 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 113 selfloop transitions, 20 changer transitions 36/313 dead transitions. [2022-07-19 21:26:13,907 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 313 transitions, 3214 flow [2022-07-19 21:26:13,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:26:13,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:26:13,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2651 transitions. [2022-07-19 21:26:13,909 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7617816091954023 [2022-07-19 21:26:13,909 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2651 transitions. [2022-07-19 21:26:13,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2651 transitions. [2022-07-19 21:26:13,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:13,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2651 transitions. [2022-07-19 21:26:13,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.55) internal successors, (2651), 20 states have internal predecessors, (2651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,912 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,912 INFO L186 Difference]: Start difference. First operand has 364 places, 268 transitions, 2266 flow. Second operand 20 states and 2651 transitions. [2022-07-19 21:26:13,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 313 transitions, 3214 flow [2022-07-19 21:26:13,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 313 transitions, 3019 flow, removed 47 selfloop flow, removed 15 redundant places. [2022-07-19 21:26:13,967 INFO L242 Difference]: Finished difference. Result has 367 places, 247 transitions, 1854 flow [2022-07-19 21:26:13,967 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2111, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1854, PETRI_PLACES=367, PETRI_TRANSITIONS=247} [2022-07-19 21:26:13,968 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 210 predicate places. [2022-07-19 21:26:13,968 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 247 transitions, 1854 flow [2022-07-19 21:26:13,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,968 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:13,968 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] [2022-07-19 21:26:13,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-19 21:26:13,968 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:13,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:13,969 INFO L85 PathProgramCache]: Analyzing trace with hash 832462464, now seen corresponding path program 11 times [2022-07-19 21:26:13,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:13,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145673612] [2022-07-19 21:26:13,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:13,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:14,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:14,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:14,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145673612] [2022-07-19 21:26:14,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145673612] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:14,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:14,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:14,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931288367] [2022-07-19 21:26:14,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:14,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:14,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:14,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:14,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:14,051 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:14,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 247 transitions, 1854 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:14,051 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:14,051 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:14,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:14,545 INFO L129 PetriNetUnfolder]: 388/1877 cut-off events. [2022-07-19 21:26:14,545 INFO L130 PetriNetUnfolder]: For 15179/15262 co-relation queries the response was YES. [2022-07-19 21:26:14,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8323 conditions, 1877 events. 388/1877 cut-off events. For 15179/15262 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 14228 event pairs, 262 based on Foata normal form. 12/1791 useless extension candidates. Maximal degree in co-relation 8201. Up to 805 conditions per place. [2022-07-19 21:26:14,566 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 101 selfloop transitions, 31 changer transitions 27/303 dead transitions. [2022-07-19 21:26:14,566 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 303 transitions, 3080 flow [2022-07-19 21:26:14,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:26:14,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:26:14,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2919 transitions. [2022-07-19 21:26:14,567 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.762539184952978 [2022-07-19 21:26:14,568 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2919 transitions. [2022-07-19 21:26:14,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2919 transitions. [2022-07-19 21:26:14,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:14,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2919 transitions. [2022-07-19 21:26:14,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.6818181818182) internal successors, (2919), 22 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:14,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:14,571 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:14,571 INFO L186 Difference]: Start difference. First operand has 367 places, 247 transitions, 1854 flow. Second operand 22 states and 2919 transitions. [2022-07-19 21:26:14,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 303 transitions, 3080 flow [2022-07-19 21:26:14,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 303 transitions, 2884 flow, removed 32 selfloop flow, removed 20 redundant places. [2022-07-19 21:26:14,624 INFO L242 Difference]: Finished difference. Result has 349 places, 259 transitions, 2093 flow [2022-07-19 21:26:14,624 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2093, PETRI_PLACES=349, PETRI_TRANSITIONS=259} [2022-07-19 21:26:14,625 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 192 predicate places. [2022-07-19 21:26:14,625 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 259 transitions, 2093 flow [2022-07-19 21:26:14,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:14,625 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:14,625 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] [2022-07-19 21:26:14,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-07-19 21:26:14,625 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:14,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:14,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1639997654, now seen corresponding path program 12 times [2022-07-19 21:26:14,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:14,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173816043] [2022-07-19 21:26:14,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:14,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:14,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:14,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:14,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173816043] [2022-07-19 21:26:14,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173816043] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:14,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:14,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:14,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509810651] [2022-07-19 21:26:14,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:14,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:14,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:14,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:14,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:14,715 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:14,715 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 259 transitions, 2093 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:14,715 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:14,715 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:14,715 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:15,228 INFO L129 PetriNetUnfolder]: 394/1938 cut-off events. [2022-07-19 21:26:15,228 INFO L130 PetriNetUnfolder]: For 14957/15036 co-relation queries the response was YES. [2022-07-19 21:26:15,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8434 conditions, 1938 events. 394/1938 cut-off events. For 14957/15036 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 14839 event pairs, 280 based on Foata normal form. 10/1852 useless extension candidates. Maximal degree in co-relation 8317. Up to 805 conditions per place. [2022-07-19 21:26:15,250 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 107 selfloop transitions, 38 changer transitions 27/316 dead transitions. [2022-07-19 21:26:15,251 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 316 transitions, 3351 flow [2022-07-19 21:26:15,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:26:15,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:26:15,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2662 transitions. [2022-07-19 21:26:15,253 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7649425287356322 [2022-07-19 21:26:15,253 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2662 transitions. [2022-07-19 21:26:15,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2662 transitions. [2022-07-19 21:26:15,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:15,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2662 transitions. [2022-07-19 21:26:15,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.1) internal successors, (2662), 20 states have internal predecessors, (2662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:15,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:15,257 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:15,257 INFO L186 Difference]: Start difference. First operand has 349 places, 259 transitions, 2093 flow. Second operand 20 states and 2662 transitions. [2022-07-19 21:26:15,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 316 transitions, 3351 flow [2022-07-19 21:26:15,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 316 transitions, 3151 flow, removed 92 selfloop flow, removed 5 redundant places. [2022-07-19 21:26:15,319 INFO L242 Difference]: Finished difference. Result has 365 places, 271 transitions, 2319 flow [2022-07-19 21:26:15,319 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1983, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2319, PETRI_PLACES=365, PETRI_TRANSITIONS=271} [2022-07-19 21:26:15,319 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 208 predicate places. [2022-07-19 21:26:15,319 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 271 transitions, 2319 flow [2022-07-19 21:26:15,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:15,320 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:15,320 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] [2022-07-19 21:26:15,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-07-19 21:26:15,320 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:15,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:15,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1097966978, now seen corresponding path program 13 times [2022-07-19 21:26:15,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:15,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170457416] [2022-07-19 21:26:15,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:15,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:15,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:15,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:15,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170457416] [2022-07-19 21:26:15,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170457416] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:15,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:15,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:15,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256536147] [2022-07-19 21:26:15,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:15,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:15,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:15,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:15,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:15,431 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:15,432 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 271 transitions, 2319 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:15,432 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:15,432 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:15,432 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:15,972 INFO L129 PetriNetUnfolder]: 390/1902 cut-off events. [2022-07-19 21:26:15,972 INFO L130 PetriNetUnfolder]: For 14768/14851 co-relation queries the response was YES. [2022-07-19 21:26:15,990 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8402 conditions, 1902 events. 390/1902 cut-off events. For 14768/14851 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 14481 event pairs, 261 based on Foata normal form. 12/1816 useless extension candidates. Maximal degree in co-relation 8276. Up to 805 conditions per place. [2022-07-19 21:26:15,995 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 111 selfloop transitions, 37 changer transitions 29/321 dead transitions. [2022-07-19 21:26:15,995 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 321 transitions, 3495 flow [2022-07-19 21:26:15,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 21:26:15,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-19 21:26:15,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2792 transitions. [2022-07-19 21:26:15,997 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7640941434044882 [2022-07-19 21:26:15,997 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2792 transitions. [2022-07-19 21:26:15,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2792 transitions. [2022-07-19 21:26:15,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:15,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2792 transitions. [2022-07-19 21:26:15,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.95238095238096) internal successors, (2792), 21 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:16,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:16,000 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:16,000 INFO L186 Difference]: Start difference. First operand has 365 places, 271 transitions, 2319 flow. Second operand 21 states and 2792 transitions. [2022-07-19 21:26:16,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 321 transitions, 3495 flow [2022-07-19 21:26:16,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 321 transitions, 3371 flow, removed 38 selfloop flow, removed 8 redundant places. [2022-07-19 21:26:16,068 INFO L242 Difference]: Finished difference. Result has 380 places, 277 transitions, 2487 flow [2022-07-19 21:26:16,068 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2232, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2487, PETRI_PLACES=380, PETRI_TRANSITIONS=277} [2022-07-19 21:26:16,068 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 223 predicate places. [2022-07-19 21:26:16,068 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 277 transitions, 2487 flow [2022-07-19 21:26:16,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:16,069 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:16,069 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] [2022-07-19 21:26:16,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-07-19 21:26:16,069 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:16,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:16,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1918666362, now seen corresponding path program 14 times [2022-07-19 21:26:16,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:16,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014120583] [2022-07-19 21:26:16,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:16,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:16,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:16,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:16,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014120583] [2022-07-19 21:26:16,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014120583] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:16,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:16,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:16,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937760641] [2022-07-19 21:26:16,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:16,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:16,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:16,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:16,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:16,161 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:16,161 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 277 transitions, 2487 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:16,161 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:16,161 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:16,161 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:16,769 INFO L129 PetriNetUnfolder]: 398/1951 cut-off events. [2022-07-19 21:26:16,769 INFO L130 PetriNetUnfolder]: For 15501/15582 co-relation queries the response was YES. [2022-07-19 21:26:16,785 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8645 conditions, 1951 events. 398/1951 cut-off events. For 15501/15582 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 15002 event pairs, 259 based on Foata normal form. 12/1866 useless extension candidates. Maximal degree in co-relation 8513. Up to 808 conditions per place. [2022-07-19 21:26:16,790 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 115 selfloop transitions, 41 changer transitions 38/338 dead transitions. [2022-07-19 21:26:16,790 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 338 transitions, 3784 flow [2022-07-19 21:26:16,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:26:16,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:26:16,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3187 transitions. [2022-07-19 21:26:16,792 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7631704980842912 [2022-07-19 21:26:16,792 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3187 transitions. [2022-07-19 21:26:16,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3187 transitions. [2022-07-19 21:26:16,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:16,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3187 transitions. [2022-07-19 21:26:16,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.79166666666666) internal successors, (3187), 24 states have internal predecessors, (3187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:16,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:16,796 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:16,796 INFO L186 Difference]: Start difference. First operand has 380 places, 277 transitions, 2487 flow. Second operand 24 states and 3187 transitions. [2022-07-19 21:26:16,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 338 transitions, 3784 flow [2022-07-19 21:26:16,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 338 transitions, 3654 flow, removed 38 selfloop flow, removed 8 redundant places. [2022-07-19 21:26:16,866 INFO L242 Difference]: Finished difference. Result has 400 places, 282 transitions, 2628 flow [2022-07-19 21:26:16,866 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2391, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2628, PETRI_PLACES=400, PETRI_TRANSITIONS=282} [2022-07-19 21:26:16,867 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 243 predicate places. [2022-07-19 21:26:16,867 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 282 transitions, 2628 flow [2022-07-19 21:26:16,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:16,867 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:16,867 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] [2022-07-19 21:26:16,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-07-19 21:26:16,868 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:16,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:16,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1461453300, now seen corresponding path program 15 times [2022-07-19 21:26:16,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:16,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654258168] [2022-07-19 21:26:16,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:16,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:16,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:16,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:16,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654258168] [2022-07-19 21:26:16,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654258168] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:16,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:16,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:16,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009494207] [2022-07-19 21:26:16,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:16,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:16,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:16,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:16,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:16,962 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:16,963 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 282 transitions, 2628 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:16,963 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:16,963 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:16,963 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:17,541 INFO L129 PetriNetUnfolder]: 394/1971 cut-off events. [2022-07-19 21:26:17,541 INFO L130 PetriNetUnfolder]: For 16835/16911 co-relation queries the response was YES. [2022-07-19 21:26:17,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8738 conditions, 1971 events. 394/1971 cut-off events. For 16835/16911 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 15253 event pairs, 274 based on Foata normal form. 10/1884 useless extension candidates. Maximal degree in co-relation 8598. Up to 804 conditions per place. [2022-07-19 21:26:17,566 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 119 selfloop transitions, 36 changer transitions 43/342 dead transitions. [2022-07-19 21:26:17,566 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 342 transitions, 3967 flow [2022-07-19 21:26:17,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-19 21:26:17,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-19 21:26:17,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3056 transitions. [2022-07-19 21:26:17,568 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7636181909045477 [2022-07-19 21:26:17,568 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3056 transitions. [2022-07-19 21:26:17,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3056 transitions. [2022-07-19 21:26:17,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:17,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3056 transitions. [2022-07-19 21:26:17,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.8695652173913) internal successors, (3056), 23 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:17,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:17,573 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:17,573 INFO L186 Difference]: Start difference. First operand has 400 places, 282 transitions, 2628 flow. Second operand 23 states and 3056 transitions. [2022-07-19 21:26:17,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 342 transitions, 3967 flow [2022-07-19 21:26:17,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 342 transitions, 3774 flow, removed 52 selfloop flow, removed 16 redundant places. [2022-07-19 21:26:17,647 INFO L242 Difference]: Finished difference. Result has 404 places, 281 transitions, 2606 flow [2022-07-19 21:26:17,648 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2501, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2606, PETRI_PLACES=404, PETRI_TRANSITIONS=281} [2022-07-19 21:26:17,648 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 247 predicate places. [2022-07-19 21:26:17,648 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 281 transitions, 2606 flow [2022-07-19 21:26:17,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:17,649 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:17,649 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] [2022-07-19 21:26:17,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-07-19 21:26:17,649 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:17,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:17,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1776543720, now seen corresponding path program 16 times [2022-07-19 21:26:17,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:17,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856188689] [2022-07-19 21:26:17,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:17,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:17,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:17,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:17,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856188689] [2022-07-19 21:26:17,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856188689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:17,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:17,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:17,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294787145] [2022-07-19 21:26:17,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:17,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:17,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:17,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:17,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:17,746 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:17,746 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 281 transitions, 2606 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:17,746 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:17,746 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:17,746 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:18,284 INFO L129 PetriNetUnfolder]: 379/1918 cut-off events. [2022-07-19 21:26:18,284 INFO L130 PetriNetUnfolder]: For 15723/15799 co-relation queries the response was YES. [2022-07-19 21:26:18,306 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8343 conditions, 1918 events. 379/1918 cut-off events. For 15723/15799 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 14719 event pairs, 275 based on Foata normal form. 10/1833 useless extension candidates. Maximal degree in co-relation 8202. Up to 801 conditions per place. [2022-07-19 21:26:18,311 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 107 selfloop transitions, 25 changer transitions 36/312 dead transitions. [2022-07-19 21:26:18,311 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 312 transitions, 3348 flow [2022-07-19 21:26:18,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:26:18,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:26:18,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2658 transitions. [2022-07-19 21:26:18,313 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7637931034482759 [2022-07-19 21:26:18,313 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2658 transitions. [2022-07-19 21:26:18,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2658 transitions. [2022-07-19 21:26:18,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:18,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2658 transitions. [2022-07-19 21:26:18,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.9) internal successors, (2658), 20 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:18,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:18,316 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:18,316 INFO L186 Difference]: Start difference. First operand has 404 places, 281 transitions, 2606 flow. Second operand 20 states and 2658 transitions. [2022-07-19 21:26:18,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 312 transitions, 3348 flow [2022-07-19 21:26:18,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 312 transitions, 3150 flow, removed 37 selfloop flow, removed 22 redundant places. [2022-07-19 21:26:18,380 INFO L242 Difference]: Finished difference. Result has 394 places, 263 transitions, 2191 flow [2022-07-19 21:26:18,381 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2439, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2191, PETRI_PLACES=394, PETRI_TRANSITIONS=263} [2022-07-19 21:26:18,381 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 237 predicate places. [2022-07-19 21:26:18,381 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 263 transitions, 2191 flow [2022-07-19 21:26:18,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:18,381 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:18,381 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] [2022-07-19 21:26:18,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-07-19 21:26:18,381 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:18,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:18,382 INFO L85 PathProgramCache]: Analyzing trace with hash 64360534, now seen corresponding path program 17 times [2022-07-19 21:26:18,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:18,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538077112] [2022-07-19 21:26:18,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:18,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:18,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:18,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:18,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538077112] [2022-07-19 21:26:18,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538077112] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:18,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:18,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:18,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848628810] [2022-07-19 21:26:18,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:18,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:18,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:18,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:18,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:18,503 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:18,504 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 263 transitions, 2191 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:18,504 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:18,504 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:18,504 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:19,014 INFO L129 PetriNetUnfolder]: 374/1862 cut-off events. [2022-07-19 21:26:19,014 INFO L130 PetriNetUnfolder]: For 14373/14454 co-relation queries the response was YES. [2022-07-19 21:26:19,033 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8009 conditions, 1862 events. 374/1862 cut-off events. For 14373/14454 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 14164 event pairs, 257 based on Foata normal form. 12/1778 useless extension candidates. Maximal degree in co-relation 7877. Up to 801 conditions per place. [2022-07-19 21:26:19,037 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 100 selfloop transitions, 21 changer transitions 34/299 dead transitions. [2022-07-19 21:26:19,038 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 299 transitions, 2997 flow [2022-07-19 21:26:19,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:26:19,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:26:19,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2656 transitions. [2022-07-19 21:26:19,039 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7632183908045977 [2022-07-19 21:26:19,039 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2656 transitions. [2022-07-19 21:26:19,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2656 transitions. [2022-07-19 21:26:19,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:19,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2656 transitions. [2022-07-19 21:26:19,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.8) internal successors, (2656), 20 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:19,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:19,043 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:19,043 INFO L186 Difference]: Start difference. First operand has 394 places, 263 transitions, 2191 flow. Second operand 20 states and 2656 transitions. [2022-07-19 21:26:19,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 299 transitions, 2997 flow [2022-07-19 21:26:19,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 299 transitions, 2775 flow, removed 24 selfloop flow, removed 23 redundant places. [2022-07-19 21:26:19,104 INFO L242 Difference]: Finished difference. Result has 373 places, 252 transitions, 1906 flow [2022-07-19 21:26:19,104 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2019, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1906, PETRI_PLACES=373, PETRI_TRANSITIONS=252} [2022-07-19 21:26:19,104 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 216 predicate places. [2022-07-19 21:26:19,105 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 252 transitions, 1906 flow [2022-07-19 21:26:19,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:19,105 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:19,105 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] [2022-07-19 21:26:19,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-07-19 21:26:19,105 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:19,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:19,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1103255976, now seen corresponding path program 18 times [2022-07-19 21:26:19,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:19,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325311999] [2022-07-19 21:26:19,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:19,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:19,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:19,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:19,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325311999] [2022-07-19 21:26:19,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325311999] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:19,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:19,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:19,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979616922] [2022-07-19 21:26:19,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:19,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:19,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:19,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:19,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:19,186 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:19,186 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 252 transitions, 1906 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:19,187 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:19,187 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:19,187 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:19,612 INFO L129 PetriNetUnfolder]: 360/1805 cut-off events. [2022-07-19 21:26:19,612 INFO L130 PetriNetUnfolder]: For 13070/13151 co-relation queries the response was YES. [2022-07-19 21:26:19,629 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7539 conditions, 1805 events. 360/1805 cut-off events. For 13070/13151 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13546 event pairs, 254 based on Foata normal form. 12/1724 useless extension candidates. Maximal degree in co-relation 7413. Up to 783 conditions per place. [2022-07-19 21:26:19,633 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 90 selfloop transitions, 6 changer transitions 38/278 dead transitions. [2022-07-19 21:26:19,633 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 278 transitions, 2483 flow [2022-07-19 21:26:19,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 21:26:19,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-19 21:26:19,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2516 transitions. [2022-07-19 21:26:19,634 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7610405323653963 [2022-07-19 21:26:19,634 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2516 transitions. [2022-07-19 21:26:19,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2516 transitions. [2022-07-19 21:26:19,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:19,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2516 transitions. [2022-07-19 21:26:19,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 132.42105263157896) internal successors, (2516), 19 states have internal predecessors, (2516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:19,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:19,638 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:19,638 INFO L186 Difference]: Start difference. First operand has 373 places, 252 transitions, 1906 flow. Second operand 19 states and 2516 transitions. [2022-07-19 21:26:19,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 278 transitions, 2483 flow [2022-07-19 21:26:19,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 278 transitions, 2353 flow, removed 24 selfloop flow, removed 23 redundant places. [2022-07-19 21:26:19,688 INFO L242 Difference]: Finished difference. Result has 354 places, 227 transitions, 1467 flow [2022-07-19 21:26:19,688 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1797, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1467, PETRI_PLACES=354, PETRI_TRANSITIONS=227} [2022-07-19 21:26:19,689 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 197 predicate places. [2022-07-19 21:26:19,689 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 227 transitions, 1467 flow [2022-07-19 21:26:19,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:19,689 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:19,689 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] [2022-07-19 21:26:19,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-07-19 21:26:19,689 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:19,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:19,690 INFO L85 PathProgramCache]: Analyzing trace with hash 692010612, now seen corresponding path program 19 times [2022-07-19 21:26:19,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:19,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222328819] [2022-07-19 21:26:19,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:19,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:19,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:19,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:19,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222328819] [2022-07-19 21:26:19,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222328819] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:19,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:19,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:19,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235354179] [2022-07-19 21:26:19,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:19,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:19,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:19,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:19,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:19,793 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:19,793 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 227 transitions, 1467 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:19,793 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:19,793 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:19,793 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:20,307 INFO L129 PetriNetUnfolder]: 375/1839 cut-off events. [2022-07-19 21:26:20,307 INFO L130 PetriNetUnfolder]: For 13344/13416 co-relation queries the response was YES. [2022-07-19 21:26:20,323 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7719 conditions, 1839 events. 375/1839 cut-off events. For 13344/13416 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13826 event pairs, 235 based on Foata normal form. 10/1763 useless extension candidates. Maximal degree in co-relation 7603. Up to 732 conditions per place. [2022-07-19 21:26:20,328 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 108 selfloop transitions, 30 changer transitions 38/320 dead transitions. [2022-07-19 21:26:20,328 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 320 transitions, 3059 flow [2022-07-19 21:26:20,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-19 21:26:20,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-19 21:26:20,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3703 transitions. [2022-07-19 21:26:20,330 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7600574712643678 [2022-07-19 21:26:20,330 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3703 transitions. [2022-07-19 21:26:20,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3703 transitions. [2022-07-19 21:26:20,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:20,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3703 transitions. [2022-07-19 21:26:20,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.25) internal successors, (3703), 28 states have internal predecessors, (3703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:20,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:20,336 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:20,336 INFO L186 Difference]: Start difference. First operand has 354 places, 227 transitions, 1467 flow. Second operand 28 states and 3703 transitions. [2022-07-19 21:26:20,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 320 transitions, 3059 flow [2022-07-19 21:26:20,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 320 transitions, 2879 flow, removed 39 selfloop flow, removed 19 redundant places. [2022-07-19 21:26:20,378 INFO L242 Difference]: Finished difference. Result has 343 places, 242 transitions, 1737 flow [2022-07-19 21:26:20,378 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1401, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1737, PETRI_PLACES=343, PETRI_TRANSITIONS=242} [2022-07-19 21:26:20,379 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 186 predicate places. [2022-07-19 21:26:20,379 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 242 transitions, 1737 flow [2022-07-19 21:26:20,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:20,379 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:20,379 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] [2022-07-19 21:26:20,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-07-19 21:26:20,379 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:20,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:20,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1243327188, now seen corresponding path program 20 times [2022-07-19 21:26:20,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:20,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005111588] [2022-07-19 21:26:20,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:20,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:20,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:20,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:20,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005111588] [2022-07-19 21:26:20,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005111588] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:20,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:20,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:20,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530228859] [2022-07-19 21:26:20,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:20,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:20,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:20,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:20,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:20,464 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:20,464 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 242 transitions, 1737 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:20,465 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:20,465 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:20,465 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:21,017 INFO L129 PetriNetUnfolder]: 375/1828 cut-off events. [2022-07-19 21:26:21,018 INFO L130 PetriNetUnfolder]: For 12637/12709 co-relation queries the response was YES. [2022-07-19 21:26:21,034 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7789 conditions, 1828 events. 375/1828 cut-off events. For 12637/12709 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13763 event pairs, 242 based on Foata normal form. 10/1743 useless extension candidates. Maximal degree in co-relation 7669. Up to 738 conditions per place. [2022-07-19 21:26:21,040 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 101 selfloop transitions, 34 changer transitions 35/314 dead transitions. [2022-07-19 21:26:21,040 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 314 transitions, 3162 flow [2022-07-19 21:26:21,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 21:26:21,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-19 21:26:21,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3446 transitions. [2022-07-19 21:26:21,042 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7617152961980548 [2022-07-19 21:26:21,042 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3446 transitions. [2022-07-19 21:26:21,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3446 transitions. [2022-07-19 21:26:21,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:21,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3446 transitions. [2022-07-19 21:26:21,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.53846153846155) internal successors, (3446), 26 states have internal predecessors, (3446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:21,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:21,047 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:21,047 INFO L186 Difference]: Start difference. First operand has 343 places, 242 transitions, 1737 flow. Second operand 26 states and 3446 transitions. [2022-07-19 21:26:21,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 314 transitions, 3162 flow [2022-07-19 21:26:21,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 314 transitions, 2981 flow, removed 71 selfloop flow, removed 17 redundant places. [2022-07-19 21:26:21,100 INFO L242 Difference]: Finished difference. Result has 354 places, 256 transitions, 2053 flow [2022-07-19 21:26:21,100 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1654, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2053, PETRI_PLACES=354, PETRI_TRANSITIONS=256} [2022-07-19 21:26:21,101 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 197 predicate places. [2022-07-19 21:26:21,101 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 256 transitions, 2053 flow [2022-07-19 21:26:21,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:21,101 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:21,101 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] [2022-07-19 21:26:21,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-07-19 21:26:21,102 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:21,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:21,102 INFO L85 PathProgramCache]: Analyzing trace with hash 282742496, now seen corresponding path program 21 times [2022-07-19 21:26:21,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:21,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098677630] [2022-07-19 21:26:21,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:21,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:21,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:21,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:21,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098677630] [2022-07-19 21:26:21,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098677630] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:21,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:21,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:21,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241823505] [2022-07-19 21:26:21,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:21,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:21,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:21,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:21,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:21,190 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:21,190 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 256 transitions, 2053 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:21,191 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:21,191 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:21,191 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:21,794 INFO L129 PetriNetUnfolder]: 371/1831 cut-off events. [2022-07-19 21:26:21,794 INFO L130 PetriNetUnfolder]: For 13978/14050 co-relation queries the response was YES. [2022-07-19 21:26:21,812 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7956 conditions, 1831 events. 371/1831 cut-off events. For 13978/14050 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13851 event pairs, 240 based on Foata normal form. 10/1748 useless extension candidates. Maximal degree in co-relation 7831. Up to 736 conditions per place. [2022-07-19 21:26:21,817 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 105 selfloop transitions, 36 changer transitions 39/324 dead transitions. [2022-07-19 21:26:21,817 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 324 transitions, 3432 flow [2022-07-19 21:26:21,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-19 21:26:21,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-19 21:26:21,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3575 transitions. [2022-07-19 21:26:21,819 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7609621115368241 [2022-07-19 21:26:21,819 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3575 transitions. [2022-07-19 21:26:21,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3575 transitions. [2022-07-19 21:26:21,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:21,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3575 transitions. [2022-07-19 21:26:21,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.40740740740742) internal successors, (3575), 27 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:21,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:21,824 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:21,824 INFO L186 Difference]: Start difference. First operand has 354 places, 256 transitions, 2053 flow. Second operand 27 states and 3575 transitions. [2022-07-19 21:26:21,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 324 transitions, 3432 flow [2022-07-19 21:26:21,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 324 transitions, 3192 flow, removed 100 selfloop flow, removed 14 redundant places. [2022-07-19 21:26:21,887 INFO L242 Difference]: Finished difference. Result has 369 places, 259 transitions, 2131 flow [2022-07-19 21:26:21,887 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1908, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2131, PETRI_PLACES=369, PETRI_TRANSITIONS=259} [2022-07-19 21:26:21,888 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 212 predicate places. [2022-07-19 21:26:21,888 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 259 transitions, 2131 flow [2022-07-19 21:26:21,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:21,888 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:21,888 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] [2022-07-19 21:26:21,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-07-19 21:26:21,888 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:21,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:21,889 INFO L85 PathProgramCache]: Analyzing trace with hash -612796028, now seen corresponding path program 22 times [2022-07-19 21:26:21,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:21,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933587335] [2022-07-19 21:26:21,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:21,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:21,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:21,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:21,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933587335] [2022-07-19 21:26:21,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933587335] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:21,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:21,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:21,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072444805] [2022-07-19 21:26:21,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:21,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:21,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:21,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:21,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:21,966 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:21,966 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 259 transitions, 2131 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:21,966 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:21,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:21,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:22,467 INFO L129 PetriNetUnfolder]: 364/1793 cut-off events. [2022-07-19 21:26:22,467 INFO L130 PetriNetUnfolder]: For 13755/13827 co-relation queries the response was YES. [2022-07-19 21:26:22,485 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7810 conditions, 1793 events. 364/1793 cut-off events. For 13755/13827 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13452 event pairs, 231 based on Foata normal form. 10/1714 useless extension candidates. Maximal degree in co-relation 7678. Up to 738 conditions per place. [2022-07-19 21:26:22,490 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 110 selfloop transitions, 39 changer transitions 31/324 dead transitions. [2022-07-19 21:26:22,491 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 324 transitions, 3396 flow [2022-07-19 21:26:22,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:26:22,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:26:22,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2920 transitions. [2022-07-19 21:26:22,493 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7628004179728317 [2022-07-19 21:26:22,493 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2920 transitions. [2022-07-19 21:26:22,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2920 transitions. [2022-07-19 21:26:22,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:22,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2920 transitions. [2022-07-19 21:26:22,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.72727272727272) internal successors, (2920), 22 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:22,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:22,497 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:22,497 INFO L186 Difference]: Start difference. First operand has 369 places, 259 transitions, 2131 flow. Second operand 22 states and 2920 transitions. [2022-07-19 21:26:22,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 324 transitions, 3396 flow [2022-07-19 21:26:22,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 324 transitions, 3144 flow, removed 88 selfloop flow, removed 21 redundant places. [2022-07-19 21:26:22,566 INFO L242 Difference]: Finished difference. Result has 363 places, 266 transitions, 2213 flow [2022-07-19 21:26:22,567 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1973, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2213, PETRI_PLACES=363, PETRI_TRANSITIONS=266} [2022-07-19 21:26:22,567 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 206 predicate places. [2022-07-19 21:26:22,567 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 266 transitions, 2213 flow [2022-07-19 21:26:22,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:22,567 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:22,568 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] [2022-07-19 21:26:22,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-07-19 21:26:22,568 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:22,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:22,568 INFO L85 PathProgramCache]: Analyzing trace with hash 44964614, now seen corresponding path program 23 times [2022-07-19 21:26:22,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:22,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525208167] [2022-07-19 21:26:22,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:22,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:22,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:22,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:22,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:22,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525208167] [2022-07-19 21:26:22,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525208167] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:22,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:22,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:22,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161006767] [2022-07-19 21:26:22,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:22,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:22,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:22,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:22,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:22,649 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:22,650 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 266 transitions, 2213 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:22,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:22,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:22,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:23,155 INFO L129 PetriNetUnfolder]: 368/1806 cut-off events. [2022-07-19 21:26:23,155 INFO L130 PetriNetUnfolder]: For 12283/12355 co-relation queries the response was YES. [2022-07-19 21:26:23,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7784 conditions, 1806 events. 368/1806 cut-off events. For 12283/12355 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13534 event pairs, 238 based on Foata normal form. 10/1723 useless extension candidates. Maximal degree in co-relation 7660. Up to 740 conditions per place. [2022-07-19 21:26:23,177 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 104 selfloop transitions, 46 changer transitions 30/324 dead transitions. [2022-07-19 21:26:23,177 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 324 transitions, 3386 flow [2022-07-19 21:26:23,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 21:26:23,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-19 21:26:23,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2792 transitions. [2022-07-19 21:26:23,179 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7640941434044882 [2022-07-19 21:26:23,179 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2792 transitions. [2022-07-19 21:26:23,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2792 transitions. [2022-07-19 21:26:23,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:23,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2792 transitions. [2022-07-19 21:26:23,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.95238095238096) internal successors, (2792), 21 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:23,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:23,183 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:23,183 INFO L186 Difference]: Start difference. First operand has 363 places, 266 transitions, 2213 flow. Second operand 21 states and 2792 transitions. [2022-07-19 21:26:23,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 324 transitions, 3386 flow [2022-07-19 21:26:23,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 324 transitions, 3287 flow, removed 34 selfloop flow, removed 7 redundant places. [2022-07-19 21:26:23,246 INFO L242 Difference]: Finished difference. Result has 377 places, 276 transitions, 2461 flow [2022-07-19 21:26:23,246 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2145, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2461, PETRI_PLACES=377, PETRI_TRANSITIONS=276} [2022-07-19 21:26:23,247 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 220 predicate places. [2022-07-19 21:26:23,247 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 276 transitions, 2461 flow [2022-07-19 21:26:23,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:23,247 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:23,247 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] [2022-07-19 21:26:23,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-07-19 21:26:23,248 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:23,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:23,248 INFO L85 PathProgramCache]: Analyzing trace with hash -601232756, now seen corresponding path program 24 times [2022-07-19 21:26:23,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:23,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541651840] [2022-07-19 21:26:23,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:23,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:23,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:23,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:23,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541651840] [2022-07-19 21:26:23,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541651840] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:23,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:23,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:23,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824536421] [2022-07-19 21:26:23,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:23,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:23,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:23,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:23,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:23,330 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:23,331 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 276 transitions, 2461 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:23,331 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:23,331 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:23,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:23,868 INFO L129 PetriNetUnfolder]: 364/1800 cut-off events. [2022-07-19 21:26:23,868 INFO L130 PetriNetUnfolder]: For 12577/12649 co-relation queries the response was YES. [2022-07-19 21:26:23,889 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7849 conditions, 1800 events. 364/1800 cut-off events. For 12577/12649 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13540 event pairs, 236 based on Foata normal form. 10/1717 useless extension candidates. Maximal degree in co-relation 7718. Up to 738 conditions per place. [2022-07-19 21:26:23,895 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 112 selfloop transitions, 41 changer transitions 31/328 dead transitions. [2022-07-19 21:26:23,895 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 328 transitions, 3615 flow [2022-07-19 21:26:23,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:26:23,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:26:23,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2923 transitions. [2022-07-19 21:26:23,897 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7635841170323929 [2022-07-19 21:26:23,897 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2923 transitions. [2022-07-19 21:26:23,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2923 transitions. [2022-07-19 21:26:23,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:23,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2923 transitions. [2022-07-19 21:26:23,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.86363636363637) internal successors, (2923), 22 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:23,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:23,901 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:23,902 INFO L186 Difference]: Start difference. First operand has 377 places, 276 transitions, 2461 flow. Second operand 22 states and 2923 transitions. [2022-07-19 21:26:23,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 328 transitions, 3615 flow [2022-07-19 21:26:23,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 328 transitions, 3478 flow, removed 39 selfloop flow, removed 9 redundant places. [2022-07-19 21:26:23,977 INFO L242 Difference]: Finished difference. Result has 390 places, 280 transitions, 2576 flow [2022-07-19 21:26:23,978 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2364, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2576, PETRI_PLACES=390, PETRI_TRANSITIONS=280} [2022-07-19 21:26:23,978 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 233 predicate places. [2022-07-19 21:26:23,978 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 280 transitions, 2576 flow [2022-07-19 21:26:23,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:23,979 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:23,979 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] [2022-07-19 21:26:23,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-07-19 21:26:23,979 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:23,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:23,979 INFO L85 PathProgramCache]: Analyzing trace with hash 945410318, now seen corresponding path program 25 times [2022-07-19 21:26:23,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:23,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843649692] [2022-07-19 21:26:23,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:23,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:24,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:24,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:24,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843649692] [2022-07-19 21:26:24,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843649692] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:24,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:24,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:24,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086618772] [2022-07-19 21:26:24,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:24,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:24,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:24,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:24,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:24,093 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:24,094 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 280 transitions, 2576 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:24,094 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:24,094 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:24,094 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:24,558 INFO L129 PetriNetUnfolder]: 370/1818 cut-off events. [2022-07-19 21:26:24,558 INFO L130 PetriNetUnfolder]: For 13333/13405 co-relation queries the response was YES. [2022-07-19 21:26:24,575 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8078 conditions, 1818 events. 370/1818 cut-off events. For 13333/13405 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13695 event pairs, 235 based on Foata normal form. 10/1733 useless extension candidates. Maximal degree in co-relation 7942. Up to 740 conditions per place. [2022-07-19 21:26:24,580 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 104 selfloop transitions, 56 changer transitions 28/332 dead transitions. [2022-07-19 21:26:24,580 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 332 transitions, 3785 flow [2022-07-19 21:26:24,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:26:24,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:26:24,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2663 transitions. [2022-07-19 21:26:24,582 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7652298850574712 [2022-07-19 21:26:24,582 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2663 transitions. [2022-07-19 21:26:24,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2663 transitions. [2022-07-19 21:26:24,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:24,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2663 transitions. [2022-07-19 21:26:24,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.15) internal successors, (2663), 20 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:24,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:24,586 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:24,586 INFO L186 Difference]: Start difference. First operand has 390 places, 280 transitions, 2576 flow. Second operand 20 states and 2663 transitions. [2022-07-19 21:26:24,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 332 transitions, 3785 flow [2022-07-19 21:26:24,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 332 transitions, 3642 flow, removed 54 selfloop flow, removed 7 redundant places. [2022-07-19 21:26:24,658 INFO L242 Difference]: Finished difference. Result has 404 places, 292 transitions, 2904 flow [2022-07-19 21:26:24,659 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2480, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2904, PETRI_PLACES=404, PETRI_TRANSITIONS=292} [2022-07-19 21:26:24,659 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 247 predicate places. [2022-07-19 21:26:24,659 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 292 transitions, 2904 flow [2022-07-19 21:26:24,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:24,659 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:24,660 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] [2022-07-19 21:26:24,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-07-19 21:26:24,660 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:24,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:24,660 INFO L85 PathProgramCache]: Analyzing trace with hash -982971076, now seen corresponding path program 26 times [2022-07-19 21:26:24,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:24,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631005261] [2022-07-19 21:26:24,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:24,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:24,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:24,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:24,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631005261] [2022-07-19 21:26:24,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631005261] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:24,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:24,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:24,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265208909] [2022-07-19 21:26:24,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:24,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:24,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:24,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:24,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:24,757 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:24,758 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 292 transitions, 2904 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:24,758 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:24,758 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:24,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:25,281 INFO L129 PetriNetUnfolder]: 374/1839 cut-off events. [2022-07-19 21:26:25,281 INFO L130 PetriNetUnfolder]: For 14041/14113 co-relation queries the response was YES. [2022-07-19 21:26:25,299 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8365 conditions, 1839 events. 374/1839 cut-off events. For 14041/14113 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13876 event pairs, 234 based on Foata normal form. 10/1753 useless extension candidates. Maximal degree in co-relation 8221. Up to 742 conditions per place. [2022-07-19 21:26:25,303 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 124 selfloop transitions, 46 changer transitions 28/342 dead transitions. [2022-07-19 21:26:25,303 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 342 transitions, 4179 flow [2022-07-19 21:26:25,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:26:25,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:26:25,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2924 transitions. [2022-07-19 21:26:25,305 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7638453500522466 [2022-07-19 21:26:25,305 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2924 transitions. [2022-07-19 21:26:25,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2924 transitions. [2022-07-19 21:26:25,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:25,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2924 transitions. [2022-07-19 21:26:25,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.9090909090909) internal successors, (2924), 22 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:25,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:25,309 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:25,309 INFO L186 Difference]: Start difference. First operand has 404 places, 292 transitions, 2904 flow. Second operand 22 states and 2924 transitions. [2022-07-19 21:26:25,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 342 transitions, 4179 flow [2022-07-19 21:26:25,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 342 transitions, 3961 flow, removed 61 selfloop flow, removed 9 redundant places. [2022-07-19 21:26:25,392 INFO L242 Difference]: Finished difference. Result has 417 places, 304 transitions, 3140 flow [2022-07-19 21:26:25,392 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2732, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3140, PETRI_PLACES=417, PETRI_TRANSITIONS=304} [2022-07-19 21:26:25,392 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 260 predicate places. [2022-07-19 21:26:25,392 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 304 transitions, 3140 flow [2022-07-19 21:26:25,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:25,393 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:25,393 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] [2022-07-19 21:26:25,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-07-19 21:26:25,393 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:25,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:25,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1984360848, now seen corresponding path program 27 times [2022-07-19 21:26:25,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:25,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038039104] [2022-07-19 21:26:25,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:25,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:25,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:25,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:25,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038039104] [2022-07-19 21:26:25,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038039104] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:25,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:25,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:25,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137389047] [2022-07-19 21:26:25,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:25,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:25,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:25,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:25,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:25,497 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:25,497 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 304 transitions, 3140 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:25,497 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:25,498 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:25,498 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:26,012 INFO L129 PetriNetUnfolder]: 370/1829 cut-off events. [2022-07-19 21:26:26,012 INFO L130 PetriNetUnfolder]: For 14026/14098 co-relation queries the response was YES. [2022-07-19 21:26:26,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8321 conditions, 1829 events. 370/1829 cut-off events. For 14026/14098 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13811 event pairs, 235 based on Foata normal form. 10/1742 useless extension candidates. Maximal degree in co-relation 8173. Up to 740 conditions per place. [2022-07-19 21:26:26,037 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 127 selfloop transitions, 48 changer transitions 30/349 dead transitions. [2022-07-19 21:26:26,037 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 349 transitions, 4364 flow [2022-07-19 21:26:26,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 21:26:26,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-19 21:26:26,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2797 transitions. [2022-07-19 21:26:26,039 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7654625068418172 [2022-07-19 21:26:26,039 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2797 transitions. [2022-07-19 21:26:26,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2797 transitions. [2022-07-19 21:26:26,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:26,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2797 transitions. [2022-07-19 21:26:26,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 133.1904761904762) internal successors, (2797), 21 states have internal predecessors, (2797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:26,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:26,043 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:26,043 INFO L186 Difference]: Start difference. First operand has 417 places, 304 transitions, 3140 flow. Second operand 21 states and 2797 transitions. [2022-07-19 21:26:26,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 349 transitions, 4364 flow [2022-07-19 21:26:26,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 349 transitions, 4133 flow, removed 96 selfloop flow, removed 6 redundant places. [2022-07-19 21:26:26,133 INFO L242 Difference]: Finished difference. Result has 432 places, 311 transitions, 3285 flow [2022-07-19 21:26:26,134 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2986, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3285, PETRI_PLACES=432, PETRI_TRANSITIONS=311} [2022-07-19 21:26:26,134 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 275 predicate places. [2022-07-19 21:26:26,134 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 311 transitions, 3285 flow [2022-07-19 21:26:26,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:26,135 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:26,135 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] [2022-07-19 21:26:26,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-07-19 21:26:26,135 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:26,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:26,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1967535438, now seen corresponding path program 28 times [2022-07-19 21:26:26,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:26,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147493929] [2022-07-19 21:26:26,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:26,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:26,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:26,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:26,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147493929] [2022-07-19 21:26:26,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147493929] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:26,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:26,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:26,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450800027] [2022-07-19 21:26:26,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:26,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:26,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:26,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:26,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:26,241 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:26,241 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 311 transitions, 3285 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:26,241 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:26,241 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:26,242 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:26,762 INFO L129 PetriNetUnfolder]: 361/1805 cut-off events. [2022-07-19 21:26:26,762 INFO L130 PetriNetUnfolder]: For 13575/13647 co-relation queries the response was YES. [2022-07-19 21:26:26,781 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8109 conditions, 1805 events. 361/1805 cut-off events. For 13575/13647 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13642 event pairs, 228 based on Foata normal form. 10/1725 useless extension candidates. Maximal degree in co-relation 7953. Up to 737 conditions per place. [2022-07-19 21:26:26,786 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 130 selfloop transitions, 36 changer transitions 40/350 dead transitions. [2022-07-19 21:26:26,786 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 350 transitions, 4154 flow [2022-07-19 21:26:26,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:26:26,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:26:26,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2400 transitions. [2022-07-19 21:26:26,788 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7662835249042146 [2022-07-19 21:26:26,788 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2400 transitions. [2022-07-19 21:26:26,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2400 transitions. [2022-07-19 21:26:26,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:26,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2400 transitions. [2022-07-19 21:26:26,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 133.33333333333334) internal successors, (2400), 18 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:26,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:26,791 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:26,791 INFO L186 Difference]: Start difference. First operand has 432 places, 311 transitions, 3285 flow. Second operand 18 states and 2400 transitions. [2022-07-19 21:26:26,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 350 transitions, 4154 flow [2022-07-19 21:26:26,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 350 transitions, 4034 flow, removed 39 selfloop flow, removed 10 redundant places. [2022-07-19 21:26:26,873 INFO L242 Difference]: Finished difference. Result has 434 places, 291 transitions, 2868 flow [2022-07-19 21:26:26,873 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3171, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2868, PETRI_PLACES=434, PETRI_TRANSITIONS=291} [2022-07-19 21:26:26,873 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 277 predicate places. [2022-07-19 21:26:26,873 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 291 transitions, 2868 flow [2022-07-19 21:26:26,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:26,874 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:26,874 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] [2022-07-19 21:26:26,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-07-19 21:26:26,874 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:26,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:26,874 INFO L85 PathProgramCache]: Analyzing trace with hash -318225270, now seen corresponding path program 29 times [2022-07-19 21:26:26,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:26,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743046943] [2022-07-19 21:26:26,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:26,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:26,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:26,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:26,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743046943] [2022-07-19 21:26:26,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743046943] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:26,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:26,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:26,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250567120] [2022-07-19 21:26:26,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:26,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:26,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:26,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:26,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:26,954 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:26,954 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 291 transitions, 2868 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:26,955 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:26,955 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:26,955 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:27,556 INFO L129 PetriNetUnfolder]: 356/1798 cut-off events. [2022-07-19 21:26:27,556 INFO L130 PetriNetUnfolder]: For 13312/13384 co-relation queries the response was YES. [2022-07-19 21:26:27,570 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7970 conditions, 1798 events. 356/1798 cut-off events. For 13312/13384 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13601 event pairs, 232 based on Foata normal form. 10/1715 useless extension candidates. Maximal degree in co-relation 7817. Up to 735 conditions per place. [2022-07-19 21:26:27,574 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 120 selfloop transitions, 28 changer transitions 37/329 dead transitions. [2022-07-19 21:26:27,574 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 329 transitions, 3734 flow [2022-07-19 21:26:27,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:26:27,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:26:27,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2660 transitions. [2022-07-19 21:26:27,576 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2022-07-19 21:26:27,576 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2660 transitions. [2022-07-19 21:26:27,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2660 transitions. [2022-07-19 21:26:27,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:27,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2660 transitions. [2022-07-19 21:26:27,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.0) internal successors, (2660), 20 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:27,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:27,580 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:27,580 INFO L186 Difference]: Start difference. First operand has 434 places, 291 transitions, 2868 flow. Second operand 20 states and 2660 transitions. [2022-07-19 21:26:27,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 329 transitions, 3734 flow [2022-07-19 21:26:27,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 329 transitions, 3467 flow, removed 25 selfloop flow, removed 22 redundant places. [2022-07-19 21:26:27,654 INFO L242 Difference]: Finished difference. Result has 415 places, 280 transitions, 2532 flow [2022-07-19 21:26:27,655 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2654, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2532, PETRI_PLACES=415, PETRI_TRANSITIONS=280} [2022-07-19 21:26:27,655 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 258 predicate places. [2022-07-19 21:26:27,655 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 280 transitions, 2532 flow [2022-07-19 21:26:27,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:27,656 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:27,656 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] [2022-07-19 21:26:27,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-07-19 21:26:27,656 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:27,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:27,656 INFO L85 PathProgramCache]: Analyzing trace with hash 562491692, now seen corresponding path program 30 times [2022-07-19 21:26:27,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:27,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000711636] [2022-07-19 21:26:27,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:27,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:27,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:27,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:27,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000711636] [2022-07-19 21:26:27,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000711636] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:27,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:27,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:27,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839267349] [2022-07-19 21:26:27,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:27,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:27,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:27,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:27,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:27,742 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:27,743 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 280 transitions, 2532 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:27,743 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:27,743 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:27,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:28,258 INFO L129 PetriNetUnfolder]: 343/1746 cut-off events. [2022-07-19 21:26:28,258 INFO L130 PetriNetUnfolder]: For 11705/11777 co-relation queries the response was YES. [2022-07-19 21:26:28,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7358 conditions, 1746 events. 343/1746 cut-off events. For 11705/11777 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13039 event pairs, 231 based on Foata normal form. 10/1665 useless extension candidates. Maximal degree in co-relation 7210. Up to 731 conditions per place. [2022-07-19 21:26:28,281 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 110 selfloop transitions, 15 changer transitions 40/309 dead transitions. [2022-07-19 21:26:28,281 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 309 transitions, 3160 flow [2022-07-19 21:26:28,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 21:26:28,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-19 21:26:28,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2523 transitions. [2022-07-19 21:26:28,283 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7631578947368421 [2022-07-19 21:26:28,283 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2523 transitions. [2022-07-19 21:26:28,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2523 transitions. [2022-07-19 21:26:28,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:28,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2523 transitions. [2022-07-19 21:26:28,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 132.78947368421052) internal successors, (2523), 19 states have internal predecessors, (2523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:28,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:28,287 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:28,287 INFO L186 Difference]: Start difference. First operand has 415 places, 280 transitions, 2532 flow. Second operand 19 states and 2523 transitions. [2022-07-19 21:26:28,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 309 transitions, 3160 flow [2022-07-19 21:26:28,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 309 transitions, 3008 flow, removed 24 selfloop flow, removed 22 redundant places. [2022-07-19 21:26:28,358 INFO L242 Difference]: Finished difference. Result has 397 places, 257 transitions, 2066 flow [2022-07-19 21:26:28,358 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2402, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2066, PETRI_PLACES=397, PETRI_TRANSITIONS=257} [2022-07-19 21:26:28,358 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 240 predicate places. [2022-07-19 21:26:28,358 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 257 transitions, 2066 flow [2022-07-19 21:26:28,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:28,359 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:28,359 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] [2022-07-19 21:26:28,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-07-19 21:26:28,359 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:28,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:28,360 INFO L85 PathProgramCache]: Analyzing trace with hash -2141377916, now seen corresponding path program 31 times [2022-07-19 21:26:28,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:28,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909873136] [2022-07-19 21:26:28,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:28,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:28,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:28,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:28,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909873136] [2022-07-19 21:26:28,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909873136] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:28,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:28,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:28,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505715789] [2022-07-19 21:26:28,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:28,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:28,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:28,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:28,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:28,448 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:28,449 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 257 transitions, 2066 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:28,449 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:28,449 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:28,449 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:28,966 INFO L129 PetriNetUnfolder]: 351/1788 cut-off events. [2022-07-19 21:26:28,966 INFO L130 PetriNetUnfolder]: For 11695/11767 co-relation queries the response was YES. [2022-07-19 21:26:28,986 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7427 conditions, 1788 events. 351/1788 cut-off events. For 11695/11767 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13449 event pairs, 231 based on Foata normal form. 10/1706 useless extension candidates. Maximal degree in co-relation 7289. Up to 731 conditions per place. [2022-07-19 21:26:28,990 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 96 selfloop transitions, 33 changer transitions 43/316 dead transitions. [2022-07-19 21:26:28,990 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 316 transitions, 3279 flow [2022-07-19 21:26:28,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-19 21:26:28,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-19 21:26:28,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3057 transitions. [2022-07-19 21:26:28,992 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7638680659670165 [2022-07-19 21:26:28,992 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3057 transitions. [2022-07-19 21:26:28,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3057 transitions. [2022-07-19 21:26:28,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:28,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3057 transitions. [2022-07-19 21:26:28,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.91304347826087) internal successors, (3057), 23 states have internal predecessors, (3057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:28,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:28,996 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:28,996 INFO L186 Difference]: Start difference. First operand has 397 places, 257 transitions, 2066 flow. Second operand 23 states and 3057 transitions. [2022-07-19 21:26:28,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 316 transitions, 3279 flow [2022-07-19 21:26:29,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 316 transitions, 3071 flow, removed 25 selfloop flow, removed 20 redundant places. [2022-07-19 21:26:29,063 INFO L242 Difference]: Finished difference. Result has 380 places, 262 transitions, 2167 flow [2022-07-19 21:26:29,063 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1955, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2167, PETRI_PLACES=380, PETRI_TRANSITIONS=262} [2022-07-19 21:26:29,065 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 223 predicate places. [2022-07-19 21:26:29,065 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 262 transitions, 2167 flow [2022-07-19 21:26:29,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:29,065 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:29,065 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] [2022-07-19 21:26:29,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-07-19 21:26:29,066 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:29,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:29,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1314758992, now seen corresponding path program 32 times [2022-07-19 21:26:29,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:29,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187462695] [2022-07-19 21:26:29,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:29,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:29,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:29,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:29,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187462695] [2022-07-19 21:26:29,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187462695] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:29,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:29,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:29,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549466182] [2022-07-19 21:26:29,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:29,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:29,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:29,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:29,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:29,179 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:29,180 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 262 transitions, 2167 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:29,180 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:29,180 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:29,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:29,701 INFO L129 PetriNetUnfolder]: 347/1766 cut-off events. [2022-07-19 21:26:29,702 INFO L130 PetriNetUnfolder]: For 11060/11132 co-relation queries the response was YES. [2022-07-19 21:26:29,718 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7190 conditions, 1766 events. 347/1766 cut-off events. For 11060/11132 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13303 event pairs, 230 based on Foata normal form. 10/1682 useless extension candidates. Maximal degree in co-relation 7052. Up to 731 conditions per place. [2022-07-19 21:26:29,722 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 93 selfloop transitions, 35 changer transitions 41/313 dead transitions. [2022-07-19 21:26:29,722 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 313 transitions, 3186 flow [2022-07-19 21:26:29,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:26:29,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:26:29,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3188 transitions. [2022-07-19 21:26:29,724 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7634099616858238 [2022-07-19 21:26:29,724 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3188 transitions. [2022-07-19 21:26:29,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3188 transitions. [2022-07-19 21:26:29,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:29,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3188 transitions. [2022-07-19 21:26:29,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.83333333333334) internal successors, (3188), 24 states have internal predecessors, (3188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:29,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:29,729 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:29,729 INFO L186 Difference]: Start difference. First operand has 380 places, 262 transitions, 2167 flow. Second operand 24 states and 3188 transitions. [2022-07-19 21:26:29,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 313 transitions, 3186 flow [2022-07-19 21:26:29,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 313 transitions, 3035 flow, removed 39 selfloop flow, removed 16 redundant places. [2022-07-19 21:26:29,777 INFO L242 Difference]: Finished difference. Result has 386 places, 261 transitions, 2168 flow [2022-07-19 21:26:29,777 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2065, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2168, PETRI_PLACES=386, PETRI_TRANSITIONS=261} [2022-07-19 21:26:29,777 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 229 predicate places. [2022-07-19 21:26:29,778 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 261 transitions, 2168 flow [2022-07-19 21:26:29,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:29,778 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:29,778 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] [2022-07-19 21:26:29,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-07-19 21:26:29,778 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:29,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:29,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1535074004, now seen corresponding path program 33 times [2022-07-19 21:26:29,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:29,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534460013] [2022-07-19 21:26:29,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:29,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:29,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:29,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:29,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534460013] [2022-07-19 21:26:29,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534460013] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:29,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:29,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:29,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731513017] [2022-07-19 21:26:29,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:29,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:29,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:29,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:29,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:29,863 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:29,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 261 transitions, 2168 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:29,864 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:29,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:29,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:30,370 INFO L129 PetriNetUnfolder]: 339/1736 cut-off events. [2022-07-19 21:26:30,370 INFO L130 PetriNetUnfolder]: For 10669/10741 co-relation queries the response was YES. [2022-07-19 21:26:30,386 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7009 conditions, 1736 events. 339/1736 cut-off events. For 10669/10741 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 12985 event pairs, 232 based on Foata normal form. 10/1651 useless extension candidates. Maximal degree in co-relation 6871. Up to 729 conditions per place. [2022-07-19 21:26:30,390 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 87 selfloop transitions, 25 changer transitions 37/293 dead transitions. [2022-07-19 21:26:30,390 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 293 transitions, 2866 flow [2022-07-19 21:26:30,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 21:26:30,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-19 21:26:30,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2529 transitions. [2022-07-19 21:26:30,392 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.76497277676951 [2022-07-19 21:26:30,392 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2529 transitions. [2022-07-19 21:26:30,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2529 transitions. [2022-07-19 21:26:30,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:30,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2529 transitions. [2022-07-19 21:26:30,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.10526315789474) internal successors, (2529), 19 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:30,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:30,396 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:30,396 INFO L186 Difference]: Start difference. First operand has 386 places, 261 transitions, 2168 flow. Second operand 19 states and 2529 transitions. [2022-07-19 21:26:30,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 293 transitions, 2866 flow [2022-07-19 21:26:30,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 293 transitions, 2706 flow, removed 39 selfloop flow, removed 18 redundant places. [2022-07-19 21:26:30,444 INFO L242 Difference]: Finished difference. Result has 378 places, 250 transitions, 1917 flow [2022-07-19 21:26:30,445 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2045, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1917, PETRI_PLACES=378, PETRI_TRANSITIONS=250} [2022-07-19 21:26:30,445 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 221 predicate places. [2022-07-19 21:26:30,445 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 250 transitions, 1917 flow [2022-07-19 21:26:30,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:30,445 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:30,446 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] [2022-07-19 21:26:30,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-07-19 21:26:30,446 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:30,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:30,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1592779014, now seen corresponding path program 34 times [2022-07-19 21:26:30,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:30,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466135256] [2022-07-19 21:26:30,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:30,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:30,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:30,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:30,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466135256] [2022-07-19 21:26:30,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466135256] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:30,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:30,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:30,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69628042] [2022-07-19 21:26:30,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:30,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:30,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:30,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:30,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:30,540 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:30,540 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 250 transitions, 1917 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:30,540 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:30,541 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:30,541 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:31,039 INFO L129 PetriNetUnfolder]: 327/1689 cut-off events. [2022-07-19 21:26:31,039 INFO L130 PetriNetUnfolder]: For 9776/9848 co-relation queries the response was YES. [2022-07-19 21:26:31,056 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6637 conditions, 1689 events. 327/1689 cut-off events. For 9776/9848 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 12616 event pairs, 230 based on Foata normal form. 10/1607 useless extension candidates. Maximal degree in co-relation 6506. Up to 727 conditions per place. [2022-07-19 21:26:31,060 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 81 selfloop transitions, 13 changer transitions 37/275 dead transitions. [2022-07-19 21:26:31,060 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 275 transitions, 2447 flow [2022-07-19 21:26:31,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:26:31,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:26:31,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2656 transitions. [2022-07-19 21:26:31,063 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7632183908045977 [2022-07-19 21:26:31,063 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2656 transitions. [2022-07-19 21:26:31,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2656 transitions. [2022-07-19 21:26:31,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:31,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2656 transitions. [2022-07-19 21:26:31,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.8) internal successors, (2656), 20 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:31,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:31,067 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:31,067 INFO L186 Difference]: Start difference. First operand has 378 places, 250 transitions, 1917 flow. Second operand 20 states and 2656 transitions. [2022-07-19 21:26:31,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 275 transitions, 2447 flow [2022-07-19 21:26:31,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 275 transitions, 2277 flow, removed 26 selfloop flow, removed 23 redundant places. [2022-07-19 21:26:31,106 INFO L242 Difference]: Finished difference. Result has 363 places, 232 transitions, 1547 flow [2022-07-19 21:26:31,107 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1783, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1547, PETRI_PLACES=363, PETRI_TRANSITIONS=232} [2022-07-19 21:26:31,107 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 206 predicate places. [2022-07-19 21:26:31,107 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 232 transitions, 1547 flow [2022-07-19 21:26:31,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:31,107 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:31,108 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] [2022-07-19 21:26:31,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-07-19 21:26:31,108 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:31,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:31,108 INFO L85 PathProgramCache]: Analyzing trace with hash 542274912, now seen corresponding path program 35 times [2022-07-19 21:26:31,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:31,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838541557] [2022-07-19 21:26:31,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:31,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:31,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:31,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:31,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:31,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838541557] [2022-07-19 21:26:31,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838541557] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:31,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:31,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:31,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050999803] [2022-07-19 21:26:31,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:31,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:31,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:31,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:31,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:31,187 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-19 21:26:31,188 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 232 transitions, 1547 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:31,188 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:31,188 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-19 21:26:31,188 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:31,613 INFO L129 PetriNetUnfolder]: 314/1615 cut-off events. [2022-07-19 21:26:31,614 INFO L130 PetriNetUnfolder]: For 9104/9176 co-relation queries the response was YES. [2022-07-19 21:26:31,628 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6209 conditions, 1615 events. 314/1615 cut-off events. For 9104/9176 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 11855 event pairs, 224 based on Foata normal form. 10/1537 useless extension candidates. Maximal degree in co-relation 6085. Up to 707 conditions per place. [2022-07-19 21:26:31,632 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 67 selfloop transitions, 2 changer transitions 40/251 dead transitions. [2022-07-19 21:26:31,632 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 251 transitions, 1922 flow [2022-07-19 21:26:31,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:26:31,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:26:31,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2645 transitions. [2022-07-19 21:26:31,634 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7600574712643678 [2022-07-19 21:26:31,634 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2645 transitions. [2022-07-19 21:26:31,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2645 transitions. [2022-07-19 21:26:31,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:31,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2645 transitions. [2022-07-19 21:26:31,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.25) internal successors, (2645), 20 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:31,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:31,638 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:31,638 INFO L186 Difference]: Start difference. First operand has 363 places, 232 transitions, 1547 flow. Second operand 20 states and 2645 transitions. [2022-07-19 21:26:31,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 251 transitions, 1922 flow [2022-07-19 21:26:31,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 251 transitions, 1833 flow, removed 16 selfloop flow, removed 21 redundant places. [2022-07-19 21:26:31,674 INFO L242 Difference]: Finished difference. Result has 341 places, 205 transitions, 1134 flow [2022-07-19 21:26:31,674 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1134, PETRI_PLACES=341, PETRI_TRANSITIONS=205} [2022-07-19 21:26:31,674 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 184 predicate places. [2022-07-19 21:26:31,674 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 205 transitions, 1134 flow [2022-07-19 21:26:31,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:31,675 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:31,675 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] [2022-07-19 21:26:31,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-07-19 21:26:31,675 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:31,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:31,675 INFO L85 PathProgramCache]: Analyzing trace with hash -690803015, now seen corresponding path program 1 times [2022-07-19 21:26:31,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:31,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090703510] [2022-07-19 21:26:31,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:31,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:31,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:31,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:31,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090703510] [2022-07-19 21:26:31,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090703510] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:31,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:31,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:26:31,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151462835] [2022-07-19 21:26:31,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:31,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:26:31,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:31,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:26:31,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:26:31,885 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:26:31,886 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 205 transitions, 1134 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:31,886 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:31,886 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:26:31,886 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:33,221 INFO L129 PetriNetUnfolder]: 887/3697 cut-off events. [2022-07-19 21:26:33,221 INFO L130 PetriNetUnfolder]: For 16466/16507 co-relation queries the response was YES. [2022-07-19 21:26:33,256 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11999 conditions, 3697 events. 887/3697 cut-off events. For 16466/16507 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 32120 event pairs, 247 based on Foata normal form. 41/3607 useless extension candidates. Maximal degree in co-relation 11883. Up to 569 conditions per place. [2022-07-19 21:26:33,266 INFO L132 encePairwiseOnDemand]: 145/174 looper letters, 301 selfloop transitions, 40 changer transitions 39/471 dead transitions. [2022-07-19 21:26:33,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 471 transitions, 3902 flow [2022-07-19 21:26:33,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-19 21:26:33,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-19 21:26:33,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3045 transitions. [2022-07-19 21:26:33,268 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.625 [2022-07-19 21:26:33,268 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3045 transitions. [2022-07-19 21:26:33,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3045 transitions. [2022-07-19 21:26:33,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:33,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3045 transitions. [2022-07-19 21:26:33,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 108.75) internal successors, (3045), 28 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:33,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:33,273 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:33,273 INFO L186 Difference]: Start difference. First operand has 341 places, 205 transitions, 1134 flow. Second operand 28 states and 3045 transitions. [2022-07-19 21:26:33,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 471 transitions, 3902 flow [2022-07-19 21:26:33,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 471 transitions, 3711 flow, removed 73 selfloop flow, removed 28 redundant places. [2022-07-19 21:26:33,317 INFO L242 Difference]: Finished difference. Result has 329 places, 227 transitions, 1433 flow [2022-07-19 21:26:33,317 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1433, PETRI_PLACES=329, PETRI_TRANSITIONS=227} [2022-07-19 21:26:33,318 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 172 predicate places. [2022-07-19 21:26:33,318 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 227 transitions, 1433 flow [2022-07-19 21:26:33,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:33,318 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:33,319 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] [2022-07-19 21:26:33,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-07-19 21:26:33,319 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:33,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:33,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1500441663, now seen corresponding path program 2 times [2022-07-19 21:26:33,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:33,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746371016] [2022-07-19 21:26:33,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:33,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:33,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:33,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:33,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746371016] [2022-07-19 21:26:33,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746371016] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:33,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:33,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:26:33,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059480968] [2022-07-19 21:26:33,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:33,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:26:33,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:33,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:26:33,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:26:33,594 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:26:33,595 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 227 transitions, 1433 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:33,595 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:33,595 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:26:33,595 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:36,272 INFO L129 PetriNetUnfolder]: 1269/5705 cut-off events. [2022-07-19 21:26:36,273 INFO L130 PetriNetUnfolder]: For 34766/34812 co-relation queries the response was YES. [2022-07-19 21:26:36,325 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20601 conditions, 5705 events. 1269/5705 cut-off events. For 34766/34812 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 57551 event pairs, 337 based on Foata normal form. 51/5603 useless extension candidates. Maximal degree in co-relation 20483. Up to 741 conditions per place. [2022-07-19 21:26:36,339 INFO L132 encePairwiseOnDemand]: 142/174 looper letters, 338 selfloop transitions, 190 changer transitions 115/734 dead transitions. [2022-07-19 21:26:36,339 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 734 transitions, 6866 flow [2022-07-19 21:26:36,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-19 21:26:36,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-07-19 21:26:36,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 4373 transitions. [2022-07-19 21:26:36,342 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6283045977011494 [2022-07-19 21:26:36,342 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 4373 transitions. [2022-07-19 21:26:36,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 4373 transitions. [2022-07-19 21:26:36,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:36,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 4373 transitions. [2022-07-19 21:26:36,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 109.325) internal successors, (4373), 40 states have internal predecessors, (4373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:36,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 174.0) internal successors, (7134), 41 states have internal predecessors, (7134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:36,349 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 174.0) internal successors, (7134), 41 states have internal predecessors, (7134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:36,349 INFO L186 Difference]: Start difference. First operand has 329 places, 227 transitions, 1433 flow. Second operand 40 states and 4373 transitions. [2022-07-19 21:26:36,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 734 transitions, 6866 flow [2022-07-19 21:26:36,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 734 transitions, 6574 flow, removed 143 selfloop flow, removed 14 redundant places. [2022-07-19 21:26:36,476 INFO L242 Difference]: Finished difference. Result has 377 places, 389 transitions, 3725 flow [2022-07-19 21:26:36,492 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1353, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=3725, PETRI_PLACES=377, PETRI_TRANSITIONS=389} [2022-07-19 21:26:36,492 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 220 predicate places. [2022-07-19 21:26:36,492 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 389 transitions, 3725 flow [2022-07-19 21:26:36,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:36,493 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:36,493 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] [2022-07-19 21:26:36,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-07-19 21:26:36,493 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:36,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:36,493 INFO L85 PathProgramCache]: Analyzing trace with hash 961265543, now seen corresponding path program 3 times [2022-07-19 21:26:36,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:36,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929331027] [2022-07-19 21:26:36,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:36,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:36,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:36,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:36,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929331027] [2022-07-19 21:26:36,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929331027] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:36,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:36,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:26:36,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422944760] [2022-07-19 21:26:36,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:36,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:26:36,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:36,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:26:36,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:26:36,775 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:26:36,776 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 389 transitions, 3725 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:36,776 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:36,776 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:26:36,776 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:38,943 INFO L129 PetriNetUnfolder]: 1334/5870 cut-off events. [2022-07-19 21:26:38,944 INFO L130 PetriNetUnfolder]: For 58585/58636 co-relation queries the response was YES. [2022-07-19 21:26:39,002 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24794 conditions, 5870 events. 1334/5870 cut-off events. For 58585/58636 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 59169 event pairs, 436 based on Foata normal form. 51/5721 useless extension candidates. Maximal degree in co-relation 24652. Up to 1334 conditions per place. [2022-07-19 21:26:39,019 INFO L132 encePairwiseOnDemand]: 142/174 looper letters, 369 selfloop transitions, 131 changer transitions 109/700 dead transitions. [2022-07-19 21:26:39,019 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 700 transitions, 8101 flow [2022-07-19 21:26:39,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-19 21:26:39,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-07-19 21:26:39,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3872 transitions. [2022-07-19 21:26:39,023 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6181353767560664 [2022-07-19 21:26:39,023 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3872 transitions. [2022-07-19 21:26:39,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3872 transitions. [2022-07-19 21:26:39,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:39,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3872 transitions. [2022-07-19 21:26:39,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 107.55555555555556) internal successors, (3872), 36 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:39,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 174.0) internal successors, (6438), 37 states have internal predecessors, (6438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:39,029 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 174.0) internal successors, (6438), 37 states have internal predecessors, (6438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:39,029 INFO L186 Difference]: Start difference. First operand has 377 places, 389 transitions, 3725 flow. Second operand 36 states and 3872 transitions. [2022-07-19 21:26:39,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 700 transitions, 8101 flow [2022-07-19 21:26:39,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 700 transitions, 7638 flow, removed 219 selfloop flow, removed 7 redundant places. [2022-07-19 21:26:39,269 INFO L242 Difference]: Finished difference. Result has 433 places, 404 transitions, 4104 flow [2022-07-19 21:26:39,270 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3316, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=4104, PETRI_PLACES=433, PETRI_TRANSITIONS=404} [2022-07-19 21:26:39,270 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 276 predicate places. [2022-07-19 21:26:39,270 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 404 transitions, 4104 flow [2022-07-19 21:26:39,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:39,270 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:39,272 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] [2022-07-19 21:26:39,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-07-19 21:26:39,272 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:39,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:39,272 INFO L85 PathProgramCache]: Analyzing trace with hash -898014253, now seen corresponding path program 4 times [2022-07-19 21:26:39,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:39,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145894209] [2022-07-19 21:26:39,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:39,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:39,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:39,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:39,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145894209] [2022-07-19 21:26:39,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145894209] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:39,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:39,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:26:39,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043844355] [2022-07-19 21:26:39,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:39,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:26:39,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:39,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:26:39,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:26:39,516 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:26:39,517 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 404 transitions, 4104 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:39,517 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:39,517 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:26:39,517 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:41,964 INFO L129 PetriNetUnfolder]: 1304/5598 cut-off events. [2022-07-19 21:26:41,965 INFO L130 PetriNetUnfolder]: For 66916/66971 co-relation queries the response was YES. [2022-07-19 21:26:42,034 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25576 conditions, 5598 events. 1304/5598 cut-off events. For 66916/66971 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 55581 event pairs, 474 based on Foata normal form. 55/5441 useless extension candidates. Maximal degree in co-relation 25408. Up to 1334 conditions per place. [2022-07-19 21:26:42,166 INFO L132 encePairwiseOnDemand]: 142/174 looper letters, 362 selfloop transitions, 133 changer transitions 104/690 dead transitions. [2022-07-19 21:26:42,167 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 690 transitions, 8604 flow [2022-07-19 21:26:42,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-19 21:26:42,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-19 21:26:42,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3774 transitions. [2022-07-19 21:26:42,169 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6197044334975369 [2022-07-19 21:26:42,169 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3774 transitions. [2022-07-19 21:26:42,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3774 transitions. [2022-07-19 21:26:42,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:42,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3774 transitions. [2022-07-19 21:26:42,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 107.82857142857142) internal successors, (3774), 35 states have internal predecessors, (3774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:42,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 174.0) internal successors, (6264), 36 states have internal predecessors, (6264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:42,175 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 174.0) internal successors, (6264), 36 states have internal predecessors, (6264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:42,175 INFO L186 Difference]: Start difference. First operand has 433 places, 404 transitions, 4104 flow. Second operand 35 states and 3774 transitions. [2022-07-19 21:26:42,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 690 transitions, 8604 flow [2022-07-19 21:26:42,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 690 transitions, 8140 flow, removed 225 selfloop flow, removed 29 redundant places. [2022-07-19 21:26:42,422 INFO L242 Difference]: Finished difference. Result has 438 places, 405 transitions, 4434 flow [2022-07-19 21:26:42,422 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=4002, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4434, PETRI_PLACES=438, PETRI_TRANSITIONS=405} [2022-07-19 21:26:42,423 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 281 predicate places. [2022-07-19 21:26:42,423 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 405 transitions, 4434 flow [2022-07-19 21:26:42,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:42,423 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:42,423 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] [2022-07-19 21:26:42,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-07-19 21:26:42,423 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:42,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:42,424 INFO L85 PathProgramCache]: Analyzing trace with hash -2133687005, now seen corresponding path program 1 times [2022-07-19 21:26:42,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:42,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195769364] [2022-07-19 21:26:42,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:42,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:42,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:42,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:42,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195769364] [2022-07-19 21:26:42,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195769364] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:42,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:42,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:26:42,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838056231] [2022-07-19 21:26:42,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:42,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:26:42,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:42,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:26:42,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:26:42,518 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2022-07-19 21:26:42,519 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 405 transitions, 4434 flow. Second operand has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:42,519 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:42,519 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2022-07-19 21:26:42,519 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:43,050 INFO L129 PetriNetUnfolder]: 377/2806 cut-off events. [2022-07-19 21:26:43,050 INFO L130 PetriNetUnfolder]: For 38042/38141 co-relation queries the response was YES. [2022-07-19 21:26:43,084 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12496 conditions, 2806 events. 377/2806 cut-off events. For 38042/38141 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 24662 event pairs, 170 based on Foata normal form. 39/2717 useless extension candidates. Maximal degree in co-relation 12328. Up to 172 conditions per place. [2022-07-19 21:26:43,092 INFO L132 encePairwiseOnDemand]: 166/174 looper letters, 62 selfloop transitions, 30 changer transitions 1/422 dead transitions. [2022-07-19 21:26:43,092 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 422 transitions, 4759 flow [2022-07-19 21:26:43,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:26:43,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:26:43,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 751 transitions. [2022-07-19 21:26:43,094 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8632183908045977 [2022-07-19 21:26:43,094 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 751 transitions. [2022-07-19 21:26:43,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 751 transitions. [2022-07-19 21:26:43,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:43,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 751 transitions. [2022-07-19 21:26:43,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.2) internal successors, (751), 5 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:43,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:43,095 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:43,095 INFO L186 Difference]: Start difference. First operand has 438 places, 405 transitions, 4434 flow. Second operand 5 states and 751 transitions. [2022-07-19 21:26:43,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 422 transitions, 4759 flow [2022-07-19 21:26:43,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 422 transitions, 4350 flow, removed 43 selfloop flow, removed 34 redundant places. [2022-07-19 21:26:43,233 INFO L242 Difference]: Finished difference. Result has 384 places, 405 transitions, 4151 flow [2022-07-19 21:26:43,233 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3994, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4151, PETRI_PLACES=384, PETRI_TRANSITIONS=405} [2022-07-19 21:26:43,234 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 227 predicate places. [2022-07-19 21:26:43,234 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 405 transitions, 4151 flow [2022-07-19 21:26:43,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:43,234 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:43,234 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] [2022-07-19 21:26:43,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-07-19 21:26:43,234 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:43,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:43,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1744949675, now seen corresponding path program 2 times [2022-07-19 21:26:43,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:43,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650469573] [2022-07-19 21:26:43,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:43,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:43,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:43,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:43,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650469573] [2022-07-19 21:26:43,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650469573] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:43,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:43,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:26:43,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249169147] [2022-07-19 21:26:43,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:43,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:26:43,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:43,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:26:43,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:26:43,278 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2022-07-19 21:26:43,279 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 405 transitions, 4151 flow. Second operand has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:43,279 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:43,279 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2022-07-19 21:26:43,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:43,651 INFO L129 PetriNetUnfolder]: 234/1955 cut-off events. [2022-07-19 21:26:43,651 INFO L130 PetriNetUnfolder]: For 19371/19429 co-relation queries the response was YES. [2022-07-19 21:26:43,672 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7663 conditions, 1955 events. 234/1955 cut-off events. For 19371/19429 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 15594 event pairs, 108 based on Foata normal form. 31/1895 useless extension candidates. Maximal degree in co-relation 7520. Up to 106 conditions per place. [2022-07-19 21:26:43,677 INFO L132 encePairwiseOnDemand]: 162/174 looper letters, 51 selfloop transitions, 12 changer transitions 34/352 dead transitions. [2022-07-19 21:26:43,677 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 352 transitions, 3457 flow [2022-07-19 21:26:43,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:26:43,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:26:43,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 749 transitions. [2022-07-19 21:26:43,678 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.860919540229885 [2022-07-19 21:26:43,678 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 749 transitions. [2022-07-19 21:26:43,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 749 transitions. [2022-07-19 21:26:43,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:43,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 749 transitions. [2022-07-19 21:26:43,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.8) internal successors, (749), 5 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:43,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:43,679 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:43,680 INFO L186 Difference]: Start difference. First operand has 384 places, 405 transitions, 4151 flow. Second operand 5 states and 749 transitions. [2022-07-19 21:26:43,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 352 transitions, 3457 flow [2022-07-19 21:26:43,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 352 transitions, 3187 flow, removed 75 selfloop flow, removed 10 redundant places. [2022-07-19 21:26:43,760 INFO L242 Difference]: Finished difference. Result has 379 places, 308 transitions, 2676 flow [2022-07-19 21:26:43,760 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2924, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2676, PETRI_PLACES=379, PETRI_TRANSITIONS=308} [2022-07-19 21:26:43,761 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 222 predicate places. [2022-07-19 21:26:43,761 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 308 transitions, 2676 flow [2022-07-19 21:26:43,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:43,761 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:43,761 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] [2022-07-19 21:26:43,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-07-19 21:26:43,762 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:43,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:43,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1469610441, now seen corresponding path program 5 times [2022-07-19 21:26:43,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:43,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688664984] [2022-07-19 21:26:43,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:43,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:43,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:43,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:43,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688664984] [2022-07-19 21:26:43,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688664984] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:43,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:43,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:26:43,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954439890] [2022-07-19 21:26:43,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:43,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:26:43,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:43,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:26:43,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:26:43,971 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:26:43,971 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 308 transitions, 2676 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:43,971 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:43,972 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:26:43,972 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:45,705 INFO L129 PetriNetUnfolder]: 777/3417 cut-off events. [2022-07-19 21:26:45,705 INFO L130 PetriNetUnfolder]: For 31100/31129 co-relation queries the response was YES. [2022-07-19 21:26:45,735 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14462 conditions, 3417 events. 777/3417 cut-off events. For 31100/31129 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 30334 event pairs, 347 based on Foata normal form. 31/3284 useless extension candidates. Maximal degree in co-relation 14326. Up to 777 conditions per place. [2022-07-19 21:26:45,742 INFO L132 encePairwiseOnDemand]: 146/174 looper letters, 261 selfloop transitions, 91 changer transitions 73/512 dead transitions. [2022-07-19 21:26:45,743 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 512 transitions, 5540 flow [2022-07-19 21:26:45,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-19 21:26:45,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-07-19 21:26:45,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3534 transitions. [2022-07-19 21:26:45,745 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6154649947753396 [2022-07-19 21:26:45,745 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3534 transitions. [2022-07-19 21:26:45,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3534 transitions. [2022-07-19 21:26:45,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:45,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3534 transitions. [2022-07-19 21:26:45,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 107.0909090909091) internal successors, (3534), 33 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:45,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:45,750 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:45,751 INFO L186 Difference]: Start difference. First operand has 379 places, 308 transitions, 2676 flow. Second operand 33 states and 3534 transitions. [2022-07-19 21:26:45,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 512 transitions, 5540 flow [2022-07-19 21:26:45,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 512 transitions, 5228 flow, removed 122 selfloop flow, removed 20 redundant places. [2022-07-19 21:26:45,830 INFO L242 Difference]: Finished difference. Result has 393 places, 317 transitions, 2986 flow [2022-07-19 21:26:45,830 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2546, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2986, PETRI_PLACES=393, PETRI_TRANSITIONS=317} [2022-07-19 21:26:45,831 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 236 predicate places. [2022-07-19 21:26:45,831 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 317 transitions, 2986 flow [2022-07-19 21:26:45,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:45,831 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:45,831 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] [2022-07-19 21:26:45,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-07-19 21:26:45,832 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:45,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:45,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1553984415, now seen corresponding path program 6 times [2022-07-19 21:26:45,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:45,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137745740] [2022-07-19 21:26:45,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:45,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:45,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:45,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:45,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137745740] [2022-07-19 21:26:45,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137745740] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:45,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:45,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:26:45,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762584570] [2022-07-19 21:26:45,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:45,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:26:45,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:45,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:26:45,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:26:45,874 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2022-07-19 21:26:45,875 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 317 transitions, 2986 flow. Second operand has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:45,875 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:45,875 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2022-07-19 21:26:45,875 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:46,034 INFO L129 PetriNetUnfolder]: 91/902 cut-off events. [2022-07-19 21:26:46,034 INFO L130 PetriNetUnfolder]: For 7711/7734 co-relation queries the response was YES. [2022-07-19 21:26:46,042 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3309 conditions, 902 events. 91/902 cut-off events. For 7711/7734 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 5434 event pairs, 56 based on Foata normal form. 22/879 useless extension candidates. Maximal degree in co-relation 3165. Up to 79 conditions per place. [2022-07-19 21:26:46,044 INFO L132 encePairwiseOnDemand]: 166/174 looper letters, 36 selfloop transitions, 4 changer transitions 22/211 dead transitions. [2022-07-19 21:26:46,044 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 211 transitions, 1514 flow [2022-07-19 21:26:46,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:26:46,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:26:46,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 740 transitions. [2022-07-19 21:26:46,045 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8505747126436781 [2022-07-19 21:26:46,045 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 740 transitions. [2022-07-19 21:26:46,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 740 transitions. [2022-07-19 21:26:46,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:46,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 740 transitions. [2022-07-19 21:26:46,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:46,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:46,047 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:46,047 INFO L186 Difference]: Start difference. First operand has 393 places, 317 transitions, 2986 flow. Second operand 5 states and 740 transitions. [2022-07-19 21:26:46,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 211 transitions, 1514 flow [2022-07-19 21:26:46,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 211 transitions, 1293 flow, removed 83 selfloop flow, removed 59 redundant places. [2022-07-19 21:26:46,069 INFO L242 Difference]: Finished difference. Result has 277 places, 184 transitions, 940 flow [2022-07-19 21:26:46,069 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1145, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=940, PETRI_PLACES=277, PETRI_TRANSITIONS=184} [2022-07-19 21:26:46,069 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 120 predicate places. [2022-07-19 21:26:46,070 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 184 transitions, 940 flow [2022-07-19 21:26:46,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:46,070 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:46,070 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] [2022-07-19 21:26:46,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-07-19 21:26:46,070 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:46,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:46,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1250025809, now seen corresponding path program 7 times [2022-07-19 21:26:46,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:46,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080777017] [2022-07-19 21:26:46,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:46,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:46,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:46,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:46,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080777017] [2022-07-19 21:26:46,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080777017] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:46,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:46,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:26:46,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588108817] [2022-07-19 21:26:46,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:46,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:26:46,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:46,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:26:46,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:26:46,270 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:26:46,271 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 184 transitions, 940 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:46,271 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:46,271 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:26:46,271 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:48,092 INFO L129 PetriNetUnfolder]: 395/1772 cut-off events. [2022-07-19 21:26:48,092 INFO L130 PetriNetUnfolder]: For 7619/7619 co-relation queries the response was YES. [2022-07-19 21:26:48,105 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5813 conditions, 1772 events. 395/1772 cut-off events. For 7619/7619 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 12641 event pairs, 160 based on Foata normal form. 1/1713 useless extension candidates. Maximal degree in co-relation 5724. Up to 432 conditions per place. [2022-07-19 21:26:48,109 INFO L132 encePairwiseOnDemand]: 148/174 looper letters, 183 selfloop transitions, 20 changer transitions 78/366 dead transitions. [2022-07-19 21:26:48,109 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 366 transitions, 2584 flow [2022-07-19 21:26:48,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-19 21:26:48,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-19 21:26:48,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 4022 transitions. [2022-07-19 21:26:48,112 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6082879612825166 [2022-07-19 21:26:48,112 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 4022 transitions. [2022-07-19 21:26:48,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 4022 transitions. [2022-07-19 21:26:48,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:48,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 4022 transitions. [2022-07-19 21:26:48,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 105.84210526315789) internal successors, (4022), 38 states have internal predecessors, (4022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:48,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 174.0) internal successors, (6786), 39 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:48,118 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 174.0) internal successors, (6786), 39 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:48,118 INFO L186 Difference]: Start difference. First operand has 277 places, 184 transitions, 940 flow. Second operand 38 states and 4022 transitions. [2022-07-19 21:26:48,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 366 transitions, 2584 flow [2022-07-19 21:26:48,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 366 transitions, 2416 flow, removed 36 selfloop flow, removed 17 redundant places. [2022-07-19 21:26:48,137 INFO L242 Difference]: Finished difference. Result has 320 places, 184 transitions, 972 flow [2022-07-19 21:26:48,137 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=972, PETRI_PLACES=320, PETRI_TRANSITIONS=184} [2022-07-19 21:26:48,137 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 163 predicate places. [2022-07-19 21:26:48,137 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 184 transitions, 972 flow [2022-07-19 21:26:48,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:48,138 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:48,138 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] [2022-07-19 21:26:48,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-07-19 21:26:48,138 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:48,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:48,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1744371307, now seen corresponding path program 3 times [2022-07-19 21:26:48,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:48,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585385167] [2022-07-19 21:26:48,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:48,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:48,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:48,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:48,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585385167] [2022-07-19 21:26:48,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585385167] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:48,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:48,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:26:48,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691805571] [2022-07-19 21:26:48,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:48,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:26:48,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:48,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:26:48,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:26:48,191 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2022-07-19 21:26:48,191 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 184 transitions, 972 flow. Second operand has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:48,191 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:48,192 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2022-07-19 21:26:48,192 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:48,357 INFO L129 PetriNetUnfolder]: 76/729 cut-off events. [2022-07-19 21:26:48,357 INFO L130 PetriNetUnfolder]: For 2445/2452 co-relation queries the response was YES. [2022-07-19 21:26:48,363 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2189 conditions, 729 events. 76/729 cut-off events. For 2445/2452 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3990 event pairs, 46 based on Foata normal form. 5/692 useless extension candidates. Maximal degree in co-relation 2081. Up to 79 conditions per place. [2022-07-19 21:26:48,364 INFO L132 encePairwiseOnDemand]: 169/174 looper letters, 32 selfloop transitions, 1 changer transitions 6/183 dead transitions. [2022-07-19 21:26:48,364 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 183 transitions, 1023 flow [2022-07-19 21:26:48,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:26:48,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:26:48,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 729 transitions. [2022-07-19 21:26:48,365 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8379310344827586 [2022-07-19 21:26:48,365 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 729 transitions. [2022-07-19 21:26:48,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 729 transitions. [2022-07-19 21:26:48,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:48,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 729 transitions. [2022-07-19 21:26:48,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.8) internal successors, (729), 5 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:48,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:48,367 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:48,367 INFO L186 Difference]: Start difference. First operand has 320 places, 184 transitions, 972 flow. Second operand 5 states and 729 transitions. [2022-07-19 21:26:48,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 183 transitions, 1023 flow [2022-07-19 21:26:48,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 183 transitions, 932 flow, removed 31 selfloop flow, removed 34 redundant places. [2022-07-19 21:26:48,377 INFO L242 Difference]: Finished difference. Result has 257 places, 175 transitions, 799 flow [2022-07-19 21:26:48,377 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=799, PETRI_PLACES=257, PETRI_TRANSITIONS=175} [2022-07-19 21:26:48,377 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 100 predicate places. [2022-07-19 21:26:48,377 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 175 transitions, 799 flow [2022-07-19 21:26:48,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:48,378 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:48,378 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] [2022-07-19 21:26:48,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-07-19 21:26:48,378 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:48,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:48,378 INFO L85 PathProgramCache]: Analyzing trace with hash -367912345, now seen corresponding path program 8 times [2022-07-19 21:26:48,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:48,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191088713] [2022-07-19 21:26:48,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:48,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:48,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:48,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:48,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191088713] [2022-07-19 21:26:48,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191088713] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:48,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:48,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:26:48,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536320828] [2022-07-19 21:26:48,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:48,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:26:48,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:48,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:26:48,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:26:48,560 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:26:48,561 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 175 transitions, 799 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:48,561 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:48,561 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:26:48,561 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:49,586 INFO L129 PetriNetUnfolder]: 343/1321 cut-off events. [2022-07-19 21:26:49,586 INFO L130 PetriNetUnfolder]: For 4469/4469 co-relation queries the response was YES. [2022-07-19 21:26:49,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4466 conditions, 1321 events. 343/1321 cut-off events. For 4469/4469 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 8239 event pairs, 156 based on Foata normal form. 1/1258 useless extension candidates. Maximal degree in co-relation 4388. Up to 432 conditions per place. [2022-07-19 21:26:49,598 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 143 selfloop transitions, 35 changer transitions 35/298 dead transitions. [2022-07-19 21:26:49,598 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 298 transitions, 2187 flow [2022-07-19 21:26:49,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 21:26:49,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-19 21:26:49,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2756 transitions. [2022-07-19 21:26:49,600 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6091954022988506 [2022-07-19 21:26:49,600 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2756 transitions. [2022-07-19 21:26:49,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2756 transitions. [2022-07-19 21:26:49,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:49,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2756 transitions. [2022-07-19 21:26:49,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 106.0) internal successors, (2756), 26 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:49,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:49,604 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:49,605 INFO L186 Difference]: Start difference. First operand has 257 places, 175 transitions, 799 flow. Second operand 26 states and 2756 transitions. [2022-07-19 21:26:49,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 298 transitions, 2187 flow [2022-07-19 21:26:49,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 298 transitions, 2138 flow, removed 5 selfloop flow, removed 8 redundant places. [2022-07-19 21:26:49,616 INFO L242 Difference]: Finished difference. Result has 284 places, 195 transitions, 1190 flow [2022-07-19 21:26:49,616 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1190, PETRI_PLACES=284, PETRI_TRANSITIONS=195} [2022-07-19 21:26:49,616 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 127 predicate places. [2022-07-19 21:26:49,617 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 195 transitions, 1190 flow [2022-07-19 21:26:49,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:49,617 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:49,617 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] [2022-07-19 21:26:49,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-07-19 21:26:49,617 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:49,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:49,618 INFO L85 PathProgramCache]: Analyzing trace with hash 596934951, now seen corresponding path program 9 times [2022-07-19 21:26:49,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:49,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2855310] [2022-07-19 21:26:49,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:49,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:49,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:49,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:49,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2855310] [2022-07-19 21:26:49,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2855310] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:49,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:49,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:26:49,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246698669] [2022-07-19 21:26:49,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:49,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:26:49,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:49,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:26:49,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:26:49,887 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:26:49,888 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 195 transitions, 1190 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:49,888 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:49,888 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:26:49,888 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:51,250 INFO L129 PetriNetUnfolder]: 424/1698 cut-off events. [2022-07-19 21:26:51,250 INFO L130 PetriNetUnfolder]: For 9372/9372 co-relation queries the response was YES. [2022-07-19 21:26:51,262 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6552 conditions, 1698 events. 424/1698 cut-off events. For 9372/9372 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 11896 event pairs, 201 based on Foata normal form. 1/1616 useless extension candidates. Maximal degree in co-relation 6462. Up to 432 conditions per place. [2022-07-19 21:26:51,265 INFO L132 encePairwiseOnDemand]: 149/174 looper letters, 196 selfloop transitions, 31 changer transitions 74/386 dead transitions. [2022-07-19 21:26:51,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 386 transitions, 3272 flow [2022-07-19 21:26:51,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-19 21:26:51,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-07-19 21:26:51,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3823 transitions. [2022-07-19 21:26:51,268 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6103128991060025 [2022-07-19 21:26:51,268 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3823 transitions. [2022-07-19 21:26:51,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3823 transitions. [2022-07-19 21:26:51,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:51,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3823 transitions. [2022-07-19 21:26:51,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 106.19444444444444) internal successors, (3823), 36 states have internal predecessors, (3823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:51,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 174.0) internal successors, (6438), 37 states have internal predecessors, (6438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:51,275 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 174.0) internal successors, (6438), 37 states have internal predecessors, (6438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:51,275 INFO L186 Difference]: Start difference. First operand has 284 places, 195 transitions, 1190 flow. Second operand 36 states and 3823 transitions. [2022-07-19 21:26:51,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 386 transitions, 3272 flow [2022-07-19 21:26:51,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 386 transitions, 2969 flow, removed 112 selfloop flow, removed 17 redundant places. [2022-07-19 21:26:51,300 INFO L242 Difference]: Finished difference. Result has 321 places, 201 transitions, 1327 flow [2022-07-19 21:26:51,300 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=1327, PETRI_PLACES=321, PETRI_TRANSITIONS=201} [2022-07-19 21:26:51,301 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 164 predicate places. [2022-07-19 21:26:51,301 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 201 transitions, 1327 flow [2022-07-19 21:26:51,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:51,301 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:51,301 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] [2022-07-19 21:26:51,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-07-19 21:26:51,302 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:51,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:51,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1161914407, now seen corresponding path program 10 times [2022-07-19 21:26:51,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:51,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568167614] [2022-07-19 21:26:51,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:51,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:51,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:51,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:51,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:51,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568167614] [2022-07-19 21:26:51,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568167614] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:51,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:51,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:26:51,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075482527] [2022-07-19 21:26:51,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:51,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:26:51,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:51,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:26:51,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:26:51,489 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:26:51,490 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 201 transitions, 1327 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:51,490 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:51,490 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:26:51,490 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:52,780 INFO L129 PetriNetUnfolder]: 423/1689 cut-off events. [2022-07-19 21:26:52,781 INFO L130 PetriNetUnfolder]: For 10565/10565 co-relation queries the response was YES. [2022-07-19 21:26:52,795 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6911 conditions, 1689 events. 423/1689 cut-off events. For 10565/10565 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 11834 event pairs, 179 based on Foata normal form. 1/1612 useless extension candidates. Maximal degree in co-relation 6800. Up to 432 conditions per place. [2022-07-19 21:26:52,799 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 162 selfloop transitions, 36 changer transitions 74/357 dead transitions. [2022-07-19 21:26:52,799 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 357 transitions, 3252 flow [2022-07-19 21:26:52,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-19 21:26:52,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-19 21:26:52,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3690 transitions. [2022-07-19 21:26:52,802 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6059113300492611 [2022-07-19 21:26:52,802 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3690 transitions. [2022-07-19 21:26:52,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3690 transitions. [2022-07-19 21:26:52,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:52,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3690 transitions. [2022-07-19 21:26:52,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 105.42857142857143) internal successors, (3690), 35 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:52,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 174.0) internal successors, (6264), 36 states have internal predecessors, (6264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:52,807 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 174.0) internal successors, (6264), 36 states have internal predecessors, (6264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:52,808 INFO L186 Difference]: Start difference. First operand has 321 places, 201 transitions, 1327 flow. Second operand 35 states and 3690 transitions. [2022-07-19 21:26:52,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 357 transitions, 3252 flow [2022-07-19 21:26:52,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 357 transitions, 2898 flow, removed 155 selfloop flow, removed 30 redundant places. [2022-07-19 21:26:52,836 INFO L242 Difference]: Finished difference. Result has 326 places, 201 transitions, 1406 flow [2022-07-19 21:26:52,836 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1236, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1406, PETRI_PLACES=326, PETRI_TRANSITIONS=201} [2022-07-19 21:26:52,836 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 169 predicate places. [2022-07-19 21:26:52,836 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 201 transitions, 1406 flow [2022-07-19 21:26:52,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:52,837 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:52,837 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] [2022-07-19 21:26:52,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-07-19 21:26:52,837 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:52,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:52,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1886932905, now seen corresponding path program 11 times [2022-07-19 21:26:52,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:52,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140591875] [2022-07-19 21:26:52,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:52,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:53,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:53,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:53,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140591875] [2022-07-19 21:26:53,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140591875] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:53,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:53,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:26:53,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864663126] [2022-07-19 21:26:53,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:53,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:26:53,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:53,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:26:53,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:26:53,034 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:26:53,034 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 201 transitions, 1406 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:53,034 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:53,034 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:26:53,034 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:54,371 INFO L129 PetriNetUnfolder]: 449/1830 cut-off events. [2022-07-19 21:26:54,371 INFO L130 PetriNetUnfolder]: For 14939/14939 co-relation queries the response was YES. [2022-07-19 21:26:54,386 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7738 conditions, 1830 events. 449/1830 cut-off events. For 14939/14939 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 13159 event pairs, 186 based on Foata normal form. 1/1741 useless extension candidates. Maximal degree in co-relation 7625. Up to 432 conditions per place. [2022-07-19 21:26:54,391 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 180 selfloop transitions, 34 changer transitions 63/362 dead transitions. [2022-07-19 21:26:54,391 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 362 transitions, 3620 flow [2022-07-19 21:26:54,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-19 21:26:54,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-19 21:26:54,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3385 transitions. [2022-07-19 21:26:54,393 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6079382183908046 [2022-07-19 21:26:54,393 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3385 transitions. [2022-07-19 21:26:54,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3385 transitions. [2022-07-19 21:26:54,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:54,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3385 transitions. [2022-07-19 21:26:54,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 105.78125) internal successors, (3385), 32 states have internal predecessors, (3385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:54,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 174.0) internal successors, (5742), 33 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:54,399 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 174.0) internal successors, (5742), 33 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:54,399 INFO L186 Difference]: Start difference. First operand has 326 places, 201 transitions, 1406 flow. Second operand 32 states and 3385 transitions. [2022-07-19 21:26:54,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 362 transitions, 3620 flow [2022-07-19 21:26:54,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 362 transitions, 3236 flow, removed 135 selfloop flow, removed 34 redundant places. [2022-07-19 21:26:54,431 INFO L242 Difference]: Finished difference. Result has 321 places, 207 transitions, 1602 flow [2022-07-19 21:26:54,431 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1284, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1602, PETRI_PLACES=321, PETRI_TRANSITIONS=207} [2022-07-19 21:26:54,431 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 164 predicate places. [2022-07-19 21:26:54,431 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 207 transitions, 1602 flow [2022-07-19 21:26:54,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:54,432 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:54,432 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] [2022-07-19 21:26:54,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-07-19 21:26:54,432 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:54,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:54,432 INFO L85 PathProgramCache]: Analyzing trace with hash 230531765, now seen corresponding path program 12 times [2022-07-19 21:26:54,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:54,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12552742] [2022-07-19 21:26:54,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:54,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:54,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:54,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:54,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12552742] [2022-07-19 21:26:54,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12552742] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:54,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:54,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:26:54,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404707553] [2022-07-19 21:26:54,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:54,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:26:54,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:54,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:26:54,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:26:54,638 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:26:54,638 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 207 transitions, 1602 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:54,638 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:54,638 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:26:54,639 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:56,170 INFO L129 PetriNetUnfolder]: 542/2282 cut-off events. [2022-07-19 21:26:56,170 INFO L130 PetriNetUnfolder]: For 21847/21855 co-relation queries the response was YES. [2022-07-19 21:26:56,186 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10148 conditions, 2282 events. 542/2282 cut-off events. For 21847/21855 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 18177 event pairs, 240 based on Foata normal form. 2/2175 useless extension candidates. Maximal degree in co-relation 10038. Up to 432 conditions per place. [2022-07-19 21:26:56,191 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 191 selfloop transitions, 40 changer transitions 84/400 dead transitions. [2022-07-19 21:26:56,191 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 400 transitions, 4346 flow [2022-07-19 21:26:56,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-19 21:26:56,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-19 21:26:56,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3614 transitions. [2022-07-19 21:26:56,193 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6108857336037864 [2022-07-19 21:26:56,193 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3614 transitions. [2022-07-19 21:26:56,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3614 transitions. [2022-07-19 21:26:56,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:56,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3614 transitions. [2022-07-19 21:26:56,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 106.29411764705883) internal successors, (3614), 34 states have internal predecessors, (3614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:56,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 174.0) internal successors, (6090), 35 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:56,199 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 174.0) internal successors, (6090), 35 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:56,199 INFO L186 Difference]: Start difference. First operand has 321 places, 207 transitions, 1602 flow. Second operand 34 states and 3614 transitions. [2022-07-19 21:26:56,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 400 transitions, 4346 flow [2022-07-19 21:26:56,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 400 transitions, 3923 flow, removed 195 selfloop flow, removed 26 redundant places. [2022-07-19 21:26:56,244 INFO L242 Difference]: Finished difference. Result has 335 places, 213 transitions, 1838 flow [2022-07-19 21:26:56,244 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1523, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1838, PETRI_PLACES=335, PETRI_TRANSITIONS=213} [2022-07-19 21:26:56,245 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 178 predicate places. [2022-07-19 21:26:56,245 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 213 transitions, 1838 flow [2022-07-19 21:26:56,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:56,245 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:56,245 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] [2022-07-19 21:26:56,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-07-19 21:26:56,245 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:56,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:56,246 INFO L85 PathProgramCache]: Analyzing trace with hash 573426529, now seen corresponding path program 13 times [2022-07-19 21:26:56,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:56,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308659243] [2022-07-19 21:26:56,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:56,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:56,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:56,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:56,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308659243] [2022-07-19 21:26:56,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308659243] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:56,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:56,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:26:56,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891970663] [2022-07-19 21:26:56,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:56,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:26:56,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:56,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:26:56,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:26:56,467 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:26:56,468 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 213 transitions, 1838 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:56,468 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:56,468 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:26:56,468 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:57,844 INFO L129 PetriNetUnfolder]: 504/2181 cut-off events. [2022-07-19 21:26:57,844 INFO L130 PetriNetUnfolder]: For 21365/21371 co-relation queries the response was YES. [2022-07-19 21:26:57,865 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9628 conditions, 2181 events. 504/2181 cut-off events. For 21365/21371 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 16989 event pairs, 249 based on Foata normal form. 3/2081 useless extension candidates. Maximal degree in co-relation 9510. Up to 432 conditions per place. [2022-07-19 21:26:57,871 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 182 selfloop transitions, 39 changer transitions 73/379 dead transitions. [2022-07-19 21:26:57,871 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 379 transitions, 3986 flow [2022-07-19 21:26:57,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-19 21:26:57,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-19 21:26:57,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3599 transitions. [2022-07-19 21:26:57,873 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6083502366463827 [2022-07-19 21:26:57,873 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3599 transitions. [2022-07-19 21:26:57,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3599 transitions. [2022-07-19 21:26:57,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:57,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3599 transitions. [2022-07-19 21:26:57,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 105.8529411764706) internal successors, (3599), 34 states have internal predecessors, (3599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:57,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 174.0) internal successors, (6090), 35 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:57,879 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 174.0) internal successors, (6090), 35 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:57,879 INFO L186 Difference]: Start difference. First operand has 335 places, 213 transitions, 1838 flow. Second operand 34 states and 3599 transitions. [2022-07-19 21:26:57,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 379 transitions, 3986 flow [2022-07-19 21:26:57,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 379 transitions, 3637 flow, removed 150 selfloop flow, removed 28 redundant places. [2022-07-19 21:26:57,929 INFO L242 Difference]: Finished difference. Result has 342 places, 214 transitions, 1943 flow [2022-07-19 21:26:57,929 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1743, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1943, PETRI_PLACES=342, PETRI_TRANSITIONS=214} [2022-07-19 21:26:57,930 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 185 predicate places. [2022-07-19 21:26:57,930 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 214 transitions, 1943 flow [2022-07-19 21:26:57,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:57,930 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:57,930 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] [2022-07-19 21:26:57,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-07-19 21:26:57,932 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:57,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:57,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1327899901, now seen corresponding path program 14 times [2022-07-19 21:26:57,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:57,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23598073] [2022-07-19 21:26:57,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:57,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:58,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:58,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:58,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23598073] [2022-07-19 21:26:58,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23598073] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:58,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:58,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:26:58,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513422323] [2022-07-19 21:26:58,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:58,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:26:58,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:58,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:26:58,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:26:58,131 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:26:58,131 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 214 transitions, 1943 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:58,131 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:58,131 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:26:58,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:59,281 INFO L129 PetriNetUnfolder]: 529/2162 cut-off events. [2022-07-19 21:26:59,281 INFO L130 PetriNetUnfolder]: For 24316/24327 co-relation queries the response was YES. [2022-07-19 21:26:59,301 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10075 conditions, 2162 events. 529/2162 cut-off events. For 24316/24327 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 16793 event pairs, 264 based on Foata normal form. 4/2047 useless extension candidates. Maximal degree in co-relation 9954. Up to 432 conditions per place. [2022-07-19 21:26:59,306 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 188 selfloop transitions, 42 changer transitions 77/392 dead transitions. [2022-07-19 21:26:59,307 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 392 transitions, 4537 flow [2022-07-19 21:26:59,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-19 21:26:59,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-07-19 21:26:59,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3507 transitions. [2022-07-19 21:26:59,309 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6107628004179728 [2022-07-19 21:26:59,309 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3507 transitions. [2022-07-19 21:26:59,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3507 transitions. [2022-07-19 21:26:59,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:59,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3507 transitions. [2022-07-19 21:26:59,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 106.27272727272727) internal successors, (3507), 33 states have internal predecessors, (3507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:59,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:59,315 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:59,315 INFO L186 Difference]: Start difference. First operand has 342 places, 214 transitions, 1943 flow. Second operand 33 states and 3507 transitions. [2022-07-19 21:26:59,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 392 transitions, 4537 flow [2022-07-19 21:26:59,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 392 transitions, 3880 flow, removed 171 selfloop flow, removed 35 redundant places. [2022-07-19 21:26:59,364 INFO L242 Difference]: Finished difference. Result has 339 places, 215 transitions, 1856 flow [2022-07-19 21:26:59,365 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1688, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1856, PETRI_PLACES=339, PETRI_TRANSITIONS=215} [2022-07-19 21:26:59,373 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 182 predicate places. [2022-07-19 21:26:59,373 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 215 transitions, 1856 flow [2022-07-19 21:26:59,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:59,373 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:59,374 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] [2022-07-19 21:26:59,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-07-19 21:26:59,374 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:59,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:59,374 INFO L85 PathProgramCache]: Analyzing trace with hash -530843921, now seen corresponding path program 15 times [2022-07-19 21:26:59,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:59,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348180648] [2022-07-19 21:26:59,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:59,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:59,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:59,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:59,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348180648] [2022-07-19 21:26:59,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348180648] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:59,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:59,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:26:59,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038457496] [2022-07-19 21:26:59,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:59,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:26:59,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:59,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:26:59,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:26:59,539 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:26:59,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 215 transitions, 1856 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:59,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:59,540 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:26:59,540 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:00,607 INFO L129 PetriNetUnfolder]: 499/2095 cut-off events. [2022-07-19 21:27:00,607 INFO L130 PetriNetUnfolder]: For 18900/18913 co-relation queries the response was YES. [2022-07-19 21:27:00,622 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9511 conditions, 2095 events. 499/2095 cut-off events. For 18900/18913 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 16185 event pairs, 228 based on Foata normal form. 5/2005 useless extension candidates. Maximal degree in co-relation 9394. Up to 432 conditions per place. [2022-07-19 21:27:00,627 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 181 selfloop transitions, 43 changer transitions 72/381 dead transitions. [2022-07-19 21:27:00,627 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 381 transitions, 4259 flow [2022-07-19 21:27:00,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-19 21:27:00,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-19 21:27:00,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3398 transitions. [2022-07-19 21:27:00,629 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6102729885057471 [2022-07-19 21:27:00,629 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3398 transitions. [2022-07-19 21:27:00,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3398 transitions. [2022-07-19 21:27:00,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:00,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3398 transitions. [2022-07-19 21:27:00,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 106.1875) internal successors, (3398), 32 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:00,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 174.0) internal successors, (5742), 33 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:00,634 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 174.0) internal successors, (5742), 33 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:00,634 INFO L186 Difference]: Start difference. First operand has 339 places, 215 transitions, 1856 flow. Second operand 32 states and 3398 transitions. [2022-07-19 21:27:00,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 381 transitions, 4259 flow [2022-07-19 21:27:00,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 381 transitions, 3785 flow, removed 155 selfloop flow, removed 31 redundant places. [2022-07-19 21:27:00,672 INFO L242 Difference]: Finished difference. Result has 339 places, 216 transitions, 1870 flow [2022-07-19 21:27:00,673 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1706, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1870, PETRI_PLACES=339, PETRI_TRANSITIONS=216} [2022-07-19 21:27:00,673 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 182 predicate places. [2022-07-19 21:27:00,673 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 216 transitions, 1870 flow [2022-07-19 21:27:00,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:00,674 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:00,674 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] [2022-07-19 21:27:00,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-07-19 21:27:00,674 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:00,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:00,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1247392525, now seen corresponding path program 16 times [2022-07-19 21:27:00,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:00,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512362060] [2022-07-19 21:27:00,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:00,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:00,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:00,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:00,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512362060] [2022-07-19 21:27:00,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512362060] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:00,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:00,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:27:00,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426930869] [2022-07-19 21:27:00,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:00,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:27:00,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:00,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:27:00,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:27:00,915 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:27:00,916 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 216 transitions, 1870 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:00,916 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:00,916 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:27:00,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:02,016 INFO L129 PetriNetUnfolder]: 475/1998 cut-off events. [2022-07-19 21:27:02,017 INFO L130 PetriNetUnfolder]: For 17746/17759 co-relation queries the response was YES. [2022-07-19 21:27:02,036 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8945 conditions, 1998 events. 475/1998 cut-off events. For 17746/17759 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 14911 event pairs, 248 based on Foata normal form. 4/1887 useless extension candidates. Maximal degree in co-relation 8829. Up to 432 conditions per place. [2022-07-19 21:27:02,042 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 156 selfloop transitions, 68 changer transitions 42/351 dead transitions. [2022-07-19 21:27:02,042 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 351 transitions, 4335 flow [2022-07-19 21:27:02,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:27:02,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:27:02,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2555 transitions. [2022-07-19 21:27:02,044 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6118295019157088 [2022-07-19 21:27:02,044 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2555 transitions. [2022-07-19 21:27:02,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2555 transitions. [2022-07-19 21:27:02,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:02,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2555 transitions. [2022-07-19 21:27:02,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 106.45833333333333) internal successors, (2555), 24 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:02,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:02,049 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:02,049 INFO L186 Difference]: Start difference. First operand has 339 places, 216 transitions, 1870 flow. Second operand 24 states and 2555 transitions. [2022-07-19 21:27:02,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 351 transitions, 4335 flow [2022-07-19 21:27:02,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 351 transitions, 3871 flow, removed 113 selfloop flow, removed 30 redundant places. [2022-07-19 21:27:02,094 INFO L242 Difference]: Finished difference. Result has 326 places, 245 transitions, 2567 flow [2022-07-19 21:27:02,095 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2567, PETRI_PLACES=326, PETRI_TRANSITIONS=245} [2022-07-19 21:27:02,095 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 169 predicate places. [2022-07-19 21:27:02,095 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 245 transitions, 2567 flow [2022-07-19 21:27:02,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:02,095 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:02,096 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] [2022-07-19 21:27:02,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-07-19 21:27:02,096 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:02,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:02,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1564357863, now seen corresponding path program 17 times [2022-07-19 21:27:02,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:02,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895536589] [2022-07-19 21:27:02,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:02,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:02,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:02,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:02,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895536589] [2022-07-19 21:27:02,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895536589] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:02,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:02,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:27:02,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486717416] [2022-07-19 21:27:02,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:02,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:27:02,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:02,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:27:02,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:27:02,287 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:27:02,287 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 245 transitions, 2567 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:02,287 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:02,288 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:27:02,288 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:03,601 INFO L129 PetriNetUnfolder]: 485/2002 cut-off events. [2022-07-19 21:27:03,601 INFO L130 PetriNetUnfolder]: For 17072/17085 co-relation queries the response was YES. [2022-07-19 21:27:03,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9219 conditions, 2002 events. 485/2002 cut-off events. For 17072/17085 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 15020 event pairs, 243 based on Foata normal form. 4/1902 useless extension candidates. Maximal degree in co-relation 9110. Up to 432 conditions per place. [2022-07-19 21:27:03,624 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 180 selfloop transitions, 60 changer transitions 63/388 dead transitions. [2022-07-19 21:27:03,625 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 388 transitions, 4635 flow [2022-07-19 21:27:03,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-19 21:27:03,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-19 21:27:03,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3288 transitions. [2022-07-19 21:27:03,627 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6095661846496107 [2022-07-19 21:27:03,627 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3288 transitions. [2022-07-19 21:27:03,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3288 transitions. [2022-07-19 21:27:03,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:03,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3288 transitions. [2022-07-19 21:27:03,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 106.06451612903226) internal successors, (3288), 31 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:03,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:03,632 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:03,632 INFO L186 Difference]: Start difference. First operand has 326 places, 245 transitions, 2567 flow. Second operand 31 states and 3288 transitions. [2022-07-19 21:27:03,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 388 transitions, 4635 flow [2022-07-19 21:27:03,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 388 transitions, 3801 flow, removed 345 selfloop flow, removed 15 redundant places. [2022-07-19 21:27:03,684 INFO L242 Difference]: Finished difference. Result has 353 places, 243 transitions, 2285 flow [2022-07-19 21:27:03,684 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2117, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2285, PETRI_PLACES=353, PETRI_TRANSITIONS=243} [2022-07-19 21:27:03,684 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 196 predicate places. [2022-07-19 21:27:03,685 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 243 transitions, 2285 flow [2022-07-19 21:27:03,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:03,685 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:03,685 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] [2022-07-19 21:27:03,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-07-19 21:27:03,685 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:03,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:03,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1449984001, now seen corresponding path program 18 times [2022-07-19 21:27:03,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:03,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018006521] [2022-07-19 21:27:03,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:03,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:03,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:03,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:03,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:03,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018006521] [2022-07-19 21:27:03,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018006521] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:03,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:03,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:27:03,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693286277] [2022-07-19 21:27:03,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:03,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:27:03,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:03,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:27:03,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:27:03,880 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:27:03,881 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 243 transitions, 2285 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:03,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:03,882 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:27:03,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:05,144 INFO L129 PetriNetUnfolder]: 467/1979 cut-off events. [2022-07-19 21:27:05,144 INFO L130 PetriNetUnfolder]: For 15745/15755 co-relation queries the response was YES. [2022-07-19 21:27:05,229 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8710 conditions, 1979 events. 467/1979 cut-off events. For 15745/15755 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 14730 event pairs, 217 based on Foata normal form. 5/1894 useless extension candidates. Maximal degree in co-relation 8589. Up to 432 conditions per place. [2022-07-19 21:27:05,233 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 161 selfloop transitions, 62 changer transitions 58/366 dead transitions. [2022-07-19 21:27:05,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 366 transitions, 4010 flow [2022-07-19 21:27:05,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-19 21:27:05,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-19 21:27:05,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3169 transitions. [2022-07-19 21:27:05,235 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6070881226053639 [2022-07-19 21:27:05,236 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3169 transitions. [2022-07-19 21:27:05,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3169 transitions. [2022-07-19 21:27:05,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:05,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3169 transitions. [2022-07-19 21:27:05,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 105.63333333333334) internal successors, (3169), 30 states have internal predecessors, (3169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:05,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:05,241 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:05,241 INFO L186 Difference]: Start difference. First operand has 353 places, 243 transitions, 2285 flow. Second operand 30 states and 3169 transitions. [2022-07-19 21:27:05,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 366 transitions, 4010 flow [2022-07-19 21:27:05,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 366 transitions, 3656 flow, removed 74 selfloop flow, removed 30 redundant places. [2022-07-19 21:27:05,284 INFO L242 Difference]: Finished difference. Result has 351 places, 245 transitions, 2314 flow [2022-07-19 21:27:05,285 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2091, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2314, PETRI_PLACES=351, PETRI_TRANSITIONS=245} [2022-07-19 21:27:05,285 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 194 predicate places. [2022-07-19 21:27:05,285 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 245 transitions, 2314 flow [2022-07-19 21:27:05,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:05,285 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:05,286 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] [2022-07-19 21:27:05,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-07-19 21:27:05,286 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:05,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:05,286 INFO L85 PathProgramCache]: Analyzing trace with hash 31822443, now seen corresponding path program 19 times [2022-07-19 21:27:05,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:05,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429419809] [2022-07-19 21:27:05,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:05,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:05,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:05,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:05,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429419809] [2022-07-19 21:27:05,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429419809] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:05,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:05,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:27:05,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883005112] [2022-07-19 21:27:05,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:05,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:27:05,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:05,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:27:05,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:27:05,478 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:27:05,479 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 245 transitions, 2314 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:05,479 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:05,479 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:27:05,479 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:06,541 INFO L129 PetriNetUnfolder]: 459/1932 cut-off events. [2022-07-19 21:27:06,541 INFO L130 PetriNetUnfolder]: For 15451/15462 co-relation queries the response was YES. [2022-07-19 21:27:06,562 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8608 conditions, 1932 events. 459/1932 cut-off events. For 15451/15462 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 14262 event pairs, 231 based on Foata normal form. 4/1840 useless extension candidates. Maximal degree in co-relation 8489. Up to 432 conditions per place. [2022-07-19 21:27:06,568 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 153 selfloop transitions, 67 changer transitions 46/351 dead transitions. [2022-07-19 21:27:06,568 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 351 transitions, 3900 flow [2022-07-19 21:27:06,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 21:27:06,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-19 21:27:06,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2756 transitions. [2022-07-19 21:27:06,570 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6091954022988506 [2022-07-19 21:27:06,570 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2756 transitions. [2022-07-19 21:27:06,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2756 transitions. [2022-07-19 21:27:06,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:06,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2756 transitions. [2022-07-19 21:27:06,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 106.0) internal successors, (2756), 26 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:06,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:06,575 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:06,575 INFO L186 Difference]: Start difference. First operand has 351 places, 245 transitions, 2314 flow. Second operand 26 states and 2756 transitions. [2022-07-19 21:27:06,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 351 transitions, 3900 flow [2022-07-19 21:27:06,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 351 transitions, 3712 flow, removed 53 selfloop flow, removed 24 redundant places. [2022-07-19 21:27:06,625 INFO L242 Difference]: Finished difference. Result has 345 places, 251 transitions, 2493 flow [2022-07-19 21:27:06,625 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2196, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2493, PETRI_PLACES=345, PETRI_TRANSITIONS=251} [2022-07-19 21:27:06,626 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 188 predicate places. [2022-07-19 21:27:06,626 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 251 transitions, 2493 flow [2022-07-19 21:27:06,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:06,626 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:06,626 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] [2022-07-19 21:27:06,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-07-19 21:27:06,627 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:06,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:06,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1524091547, now seen corresponding path program 20 times [2022-07-19 21:27:06,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:06,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357941399] [2022-07-19 21:27:06,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:06,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:06,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:06,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:06,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357941399] [2022-07-19 21:27:06,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357941399] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:06,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:06,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:27:06,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145872877] [2022-07-19 21:27:06,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:06,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:27:06,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:06,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:27:06,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:27:06,822 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:27:06,823 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 251 transitions, 2493 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:06,823 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:06,823 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:27:06,823 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:07,925 INFO L129 PetriNetUnfolder]: 433/1845 cut-off events. [2022-07-19 21:27:07,925 INFO L130 PetriNetUnfolder]: For 14721/14732 co-relation queries the response was YES. [2022-07-19 21:27:07,943 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8105 conditions, 1845 events. 433/1845 cut-off events. For 14721/14732 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 13340 event pairs, 222 based on Foata normal form. 4/1762 useless extension candidates. Maximal degree in co-relation 7991. Up to 432 conditions per place. [2022-07-19 21:27:07,948 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 152 selfloop transitions, 57 changer transitions 52/346 dead transitions. [2022-07-19 21:27:07,948 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 346 transitions, 3787 flow [2022-07-19 21:27:07,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-19 21:27:07,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-19 21:27:07,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2958 transitions. [2022-07-19 21:27:07,950 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2022-07-19 21:27:07,950 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2958 transitions. [2022-07-19 21:27:07,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2958 transitions. [2022-07-19 21:27:07,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:07,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2958 transitions. [2022-07-19 21:27:07,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 105.64285714285714) internal successors, (2958), 28 states have internal predecessors, (2958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:07,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:07,955 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:07,955 INFO L186 Difference]: Start difference. First operand has 345 places, 251 transitions, 2493 flow. Second operand 28 states and 2958 transitions. [2022-07-19 21:27:07,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 346 transitions, 3787 flow [2022-07-19 21:27:08,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 346 transitions, 3537 flow, removed 42 selfloop flow, removed 19 redundant places. [2022-07-19 21:27:08,003 INFO L242 Difference]: Finished difference. Result has 356 places, 243 transitions, 2271 flow [2022-07-19 21:27:08,004 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2311, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2271, PETRI_PLACES=356, PETRI_TRANSITIONS=243} [2022-07-19 21:27:08,004 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 199 predicate places. [2022-07-19 21:27:08,004 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 243 transitions, 2271 flow [2022-07-19 21:27:08,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:08,005 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:08,005 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] [2022-07-19 21:27:08,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-07-19 21:27:08,005 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:08,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:08,005 INFO L85 PathProgramCache]: Analyzing trace with hash 362925875, now seen corresponding path program 21 times [2022-07-19 21:27:08,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:08,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343753014] [2022-07-19 21:27:08,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:08,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:08,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:08,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:08,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343753014] [2022-07-19 21:27:08,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343753014] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:08,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:08,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:27:08,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839021494] [2022-07-19 21:27:08,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:08,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:27:08,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:08,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:27:08,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:27:08,205 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:27:08,205 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 243 transitions, 2271 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:08,205 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:08,205 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:27:08,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:09,258 INFO L129 PetriNetUnfolder]: 391/1627 cut-off events. [2022-07-19 21:27:09,258 INFO L130 PetriNetUnfolder]: For 13138/13142 co-relation queries the response was YES. [2022-07-19 21:27:09,273 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7068 conditions, 1627 events. 391/1627 cut-off events. For 13138/13142 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 11154 event pairs, 207 based on Foata normal form. 3/1546 useless extension candidates. Maximal degree in co-relation 6948. Up to 432 conditions per place. [2022-07-19 21:27:09,277 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 131 selfloop transitions, 29 changer transitions 61/306 dead transitions. [2022-07-19 21:27:09,278 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 306 transitions, 3066 flow [2022-07-19 21:27:09,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 21:27:09,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-19 21:27:09,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2739 transitions. [2022-07-19 21:27:09,280 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6054376657824934 [2022-07-19 21:27:09,280 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2739 transitions. [2022-07-19 21:27:09,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2739 transitions. [2022-07-19 21:27:09,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:09,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2739 transitions. [2022-07-19 21:27:09,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 105.34615384615384) internal successors, (2739), 26 states have internal predecessors, (2739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:09,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:09,284 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:09,284 INFO L186 Difference]: Start difference. First operand has 356 places, 243 transitions, 2271 flow. Second operand 26 states and 2739 transitions. [2022-07-19 21:27:09,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 306 transitions, 3066 flow [2022-07-19 21:27:09,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 306 transitions, 2883 flow, removed 44 selfloop flow, removed 22 redundant places. [2022-07-19 21:27:09,324 INFO L242 Difference]: Finished difference. Result has 348 places, 201 transitions, 1533 flow [2022-07-19 21:27:09,325 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2116, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1533, PETRI_PLACES=348, PETRI_TRANSITIONS=201} [2022-07-19 21:27:09,325 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 191 predicate places. [2022-07-19 21:27:09,325 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 201 transitions, 1533 flow [2022-07-19 21:27:09,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:09,326 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:09,326 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] [2022-07-19 21:27:09,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-07-19 21:27:09,326 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:09,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:09,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1782701479, now seen corresponding path program 22 times [2022-07-19 21:27:09,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:09,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596459793] [2022-07-19 21:27:09,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:09,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:09,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:09,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:09,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596459793] [2022-07-19 21:27:09,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596459793] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:09,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:09,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:27:09,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113146470] [2022-07-19 21:27:09,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:09,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:27:09,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:09,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:27:09,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:27:09,585 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:27:09,585 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 201 transitions, 1533 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:09,585 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:09,586 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:27:09,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:10,927 INFO L129 PetriNetUnfolder]: 438/1849 cut-off events. [2022-07-19 21:27:10,927 INFO L130 PetriNetUnfolder]: For 15431/15438 co-relation queries the response was YES. [2022-07-19 21:27:10,941 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7948 conditions, 1849 events. 438/1849 cut-off events. For 15431/15438 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 13540 event pairs, 208 based on Foata normal form. 3/1770 useless extension candidates. Maximal degree in co-relation 7837. Up to 432 conditions per place. [2022-07-19 21:27:10,945 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 170 selfloop transitions, 39 changer transitions 65/359 dead transitions. [2022-07-19 21:27:10,945 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 359 transitions, 3604 flow [2022-07-19 21:27:10,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-19 21:27:10,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-07-19 21:27:10,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3487 transitions. [2022-07-19 21:27:10,948 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.60727969348659 [2022-07-19 21:27:10,948 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3487 transitions. [2022-07-19 21:27:10,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3487 transitions. [2022-07-19 21:27:10,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:10,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3487 transitions. [2022-07-19 21:27:10,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 105.66666666666667) internal successors, (3487), 33 states have internal predecessors, (3487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:10,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:10,956 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:10,956 INFO L186 Difference]: Start difference. First operand has 348 places, 201 transitions, 1533 flow. Second operand 33 states and 3487 transitions. [2022-07-19 21:27:10,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 359 transitions, 3604 flow [2022-07-19 21:27:10,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 359 transitions, 3118 flow, removed 111 selfloop flow, removed 27 redundant places. [2022-07-19 21:27:10,988 INFO L242 Difference]: Finished difference. Result has 332 places, 207 transitions, 1666 flow [2022-07-19 21:27:10,990 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1666, PETRI_PLACES=332, PETRI_TRANSITIONS=207} [2022-07-19 21:27:10,990 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 175 predicate places. [2022-07-19 21:27:10,990 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 207 transitions, 1666 flow [2022-07-19 21:27:10,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:10,991 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:10,991 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] [2022-07-19 21:27:10,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-07-19 21:27:10,991 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:10,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:10,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1855099201, now seen corresponding path program 23 times [2022-07-19 21:27:10,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:10,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028834197] [2022-07-19 21:27:10,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:10,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:11,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:11,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:11,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028834197] [2022-07-19 21:27:11,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028834197] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:11,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:11,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:27:11,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682639250] [2022-07-19 21:27:11,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:11,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:27:11,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:11,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:27:11,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:27:11,155 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:27:11,155 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 207 transitions, 1666 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,155 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:11,155 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:27:11,155 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:12,148 INFO L129 PetriNetUnfolder]: 451/1849 cut-off events. [2022-07-19 21:27:12,149 INFO L130 PetriNetUnfolder]: For 17790/17794 co-relation queries the response was YES. [2022-07-19 21:27:12,165 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8455 conditions, 1849 events. 451/1849 cut-off events. For 17790/17794 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 13556 event pairs, 240 based on Foata normal form. 2/1750 useless extension candidates. Maximal degree in co-relation 8336. Up to 432 conditions per place. [2022-07-19 21:27:12,170 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 176 selfloop transitions, 44 changer transitions 52/357 dead transitions. [2022-07-19 21:27:12,171 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 357 transitions, 3850 flow [2022-07-19 21:27:12,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-19 21:27:12,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-19 21:27:12,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3287 transitions. [2022-07-19 21:27:12,173 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6093807934742306 [2022-07-19 21:27:12,173 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3287 transitions. [2022-07-19 21:27:12,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3287 transitions. [2022-07-19 21:27:12,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:12,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3287 transitions. [2022-07-19 21:27:12,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 106.03225806451613) internal successors, (3287), 31 states have internal predecessors, (3287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:12,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:12,178 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:12,178 INFO L186 Difference]: Start difference. First operand has 332 places, 207 transitions, 1666 flow. Second operand 31 states and 3287 transitions. [2022-07-19 21:27:12,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 357 transitions, 3850 flow [2022-07-19 21:27:12,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 357 transitions, 3382 flow, removed 226 selfloop flow, removed 28 redundant places. [2022-07-19 21:27:12,216 INFO L242 Difference]: Finished difference. Result has 335 places, 216 transitions, 1953 flow [2022-07-19 21:27:12,216 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1579, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1953, PETRI_PLACES=335, PETRI_TRANSITIONS=216} [2022-07-19 21:27:12,217 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 178 predicate places. [2022-07-19 21:27:12,217 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 216 transitions, 1953 flow [2022-07-19 21:27:12,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:12,217 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:12,217 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] [2022-07-19 21:27:12,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-07-19 21:27:12,218 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:12,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:12,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1287307459, now seen corresponding path program 24 times [2022-07-19 21:27:12,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:12,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142706751] [2022-07-19 21:27:12,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:12,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:12,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:12,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:12,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142706751] [2022-07-19 21:27:12,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142706751] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:12,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:12,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:27:12,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763967116] [2022-07-19 21:27:12,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:12,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:27:12,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:12,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:27:12,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:27:12,361 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:27:12,362 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 216 transitions, 1953 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:12,362 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:12,362 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:27:12,362 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:13,392 INFO L129 PetriNetUnfolder]: 452/1875 cut-off events. [2022-07-19 21:27:13,393 INFO L130 PetriNetUnfolder]: For 16948/16957 co-relation queries the response was YES. [2022-07-19 21:27:13,410 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8528 conditions, 1875 events. 452/1875 cut-off events. For 16948/16957 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 13872 event pairs, 227 based on Foata normal form. 3/1779 useless extension candidates. Maximal degree in co-relation 8408. Up to 432 conditions per place. [2022-07-19 21:27:13,415 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 183 selfloop transitions, 42 changer transitions 64/374 dead transitions. [2022-07-19 21:27:13,415 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 374 transitions, 4005 flow [2022-07-19 21:27:13,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-19 21:27:13,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-07-19 21:27:13,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3500 transitions. [2022-07-19 21:27:13,419 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6095437129919888 [2022-07-19 21:27:13,419 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3500 transitions. [2022-07-19 21:27:13,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3500 transitions. [2022-07-19 21:27:13,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:13,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3500 transitions. [2022-07-19 21:27:13,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 106.06060606060606) internal successors, (3500), 33 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:13,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:13,425 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:13,425 INFO L186 Difference]: Start difference. First operand has 335 places, 216 transitions, 1953 flow. Second operand 33 states and 3500 transitions. [2022-07-19 21:27:13,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 374 transitions, 4005 flow [2022-07-19 21:27:13,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 374 transitions, 3524 flow, removed 196 selfloop flow, removed 24 redundant places. [2022-07-19 21:27:13,467 INFO L242 Difference]: Finished difference. Result has 348 places, 215 transitions, 1905 flow [2022-07-19 21:27:13,467 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1770, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1905, PETRI_PLACES=348, PETRI_TRANSITIONS=215} [2022-07-19 21:27:13,467 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 191 predicate places. [2022-07-19 21:27:13,467 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 215 transitions, 1905 flow [2022-07-19 21:27:13,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:13,468 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:13,468 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] [2022-07-19 21:27:13,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-07-19 21:27:13,468 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:13,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:13,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1597305123, now seen corresponding path program 25 times [2022-07-19 21:27:13,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:13,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292150803] [2022-07-19 21:27:13,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:13,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:13,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:13,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:13,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292150803] [2022-07-19 21:27:13,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292150803] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:13,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:13,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:27:13,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337911957] [2022-07-19 21:27:13,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:13,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:27:13,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:13,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:27:13,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:27:13,705 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:27:13,706 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 215 transitions, 1905 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:13,706 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:13,706 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:27:13,706 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:14,917 INFO L129 PetriNetUnfolder]: 416/1694 cut-off events. [2022-07-19 21:27:14,918 INFO L130 PetriNetUnfolder]: For 14928/14939 co-relation queries the response was YES. [2022-07-19 21:27:14,929 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7688 conditions, 1694 events. 416/1694 cut-off events. For 14928/14939 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 11950 event pairs, 208 based on Foata normal form. 4/1614 useless extension candidates. Maximal degree in co-relation 7563. Up to 432 conditions per place. [2022-07-19 21:27:14,933 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 174 selfloop transitions, 38 changer transitions 61/358 dead transitions. [2022-07-19 21:27:14,933 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 358 transitions, 3717 flow [2022-07-19 21:27:14,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-19 21:27:14,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-19 21:27:14,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3390 transitions. [2022-07-19 21:27:14,936 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6088362068965517 [2022-07-19 21:27:14,936 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3390 transitions. [2022-07-19 21:27:14,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3390 transitions. [2022-07-19 21:27:14,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:14,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3390 transitions. [2022-07-19 21:27:14,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 105.9375) internal successors, (3390), 32 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:14,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 174.0) internal successors, (5742), 33 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:14,941 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 174.0) internal successors, (5742), 33 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:14,941 INFO L186 Difference]: Start difference. First operand has 348 places, 215 transitions, 1905 flow. Second operand 32 states and 3390 transitions. [2022-07-19 21:27:14,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 358 transitions, 3717 flow [2022-07-19 21:27:14,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 358 transitions, 3229 flow, removed 146 selfloop flow, removed 33 redundant places. [2022-07-19 21:27:14,975 INFO L242 Difference]: Finished difference. Result has 345 places, 210 transitions, 1703 flow [2022-07-19 21:27:14,975 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1677, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1703, PETRI_PLACES=345, PETRI_TRANSITIONS=210} [2022-07-19 21:27:14,975 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 188 predicate places. [2022-07-19 21:27:14,975 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 210 transitions, 1703 flow [2022-07-19 21:27:14,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:14,976 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:14,976 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] [2022-07-19 21:27:14,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-07-19 21:27:14,976 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:14,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:14,976 INFO L85 PathProgramCache]: Analyzing trace with hash 607871383, now seen corresponding path program 26 times [2022-07-19 21:27:14,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:14,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308496719] [2022-07-19 21:27:14,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:14,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:15,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:15,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:15,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308496719] [2022-07-19 21:27:15,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308496719] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:15,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:15,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:27:15,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663413123] [2022-07-19 21:27:15,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:15,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:27:15,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:15,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:27:15,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:27:15,189 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:27:15,190 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 210 transitions, 1703 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:15,190 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:15,190 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:27:15,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:16,127 INFO L129 PetriNetUnfolder]: 398/1604 cut-off events. [2022-07-19 21:27:16,128 INFO L130 PetriNetUnfolder]: For 12933/12938 co-relation queries the response was YES. [2022-07-19 21:27:16,143 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7169 conditions, 1604 events. 398/1604 cut-off events. For 12933/12938 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 11012 event pairs, 224 based on Foata normal form. 1/1516 useless extension candidates. Maximal degree in co-relation 7047. Up to 432 conditions per place. [2022-07-19 21:27:16,147 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 142 selfloop transitions, 55 changer transitions 33/315 dead transitions. [2022-07-19 21:27:16,148 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 315 transitions, 3388 flow [2022-07-19 21:27:16,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:27:16,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:27:16,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2548 transitions. [2022-07-19 21:27:16,150 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6101532567049809 [2022-07-19 21:27:16,150 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2548 transitions. [2022-07-19 21:27:16,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2548 transitions. [2022-07-19 21:27:16,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:16,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2548 transitions. [2022-07-19 21:27:16,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 106.16666666666667) internal successors, (2548), 24 states have internal predecessors, (2548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:16,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:16,154 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:16,154 INFO L186 Difference]: Start difference. First operand has 345 places, 210 transitions, 1703 flow. Second operand 24 states and 2548 transitions. [2022-07-19 21:27:16,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 315 transitions, 3388 flow [2022-07-19 21:27:16,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 315 transitions, 2979 flow, removed 93 selfloop flow, removed 35 redundant places. [2022-07-19 21:27:16,187 INFO L242 Difference]: Finished difference. Result has 326 places, 228 transitions, 2057 flow [2022-07-19 21:27:16,187 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1558, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2057, PETRI_PLACES=326, PETRI_TRANSITIONS=228} [2022-07-19 21:27:16,187 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 169 predicate places. [2022-07-19 21:27:16,188 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 228 transitions, 2057 flow [2022-07-19 21:27:16,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:16,188 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:16,188 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] [2022-07-19 21:27:16,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-07-19 21:27:16,188 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:16,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:16,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1143784635, now seen corresponding path program 27 times [2022-07-19 21:27:16,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:16,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896346547] [2022-07-19 21:27:16,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:16,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:16,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:16,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:16,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896346547] [2022-07-19 21:27:16,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896346547] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:16,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:16,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:27:16,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900532938] [2022-07-19 21:27:16,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:16,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:27:16,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:16,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:27:16,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:27:16,410 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:27:16,411 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 228 transitions, 2057 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:16,411 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:16,411 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:27:16,411 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:17,496 INFO L129 PetriNetUnfolder]: 403/1629 cut-off events. [2022-07-19 21:27:17,496 INFO L130 PetriNetUnfolder]: For 12445/12450 co-relation queries the response was YES. [2022-07-19 21:27:17,510 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7256 conditions, 1629 events. 403/1629 cut-off events. For 12445/12450 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 11202 event pairs, 209 based on Foata normal form. 1/1545 useless extension candidates. Maximal degree in co-relation 7144. Up to 432 conditions per place. [2022-07-19 21:27:17,514 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 155 selfloop transitions, 50 changer transitions 48/338 dead transitions. [2022-07-19 21:27:17,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 338 transitions, 3597 flow [2022-07-19 21:27:17,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-19 21:27:17,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-19 21:27:17,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3164 transitions. [2022-07-19 21:27:17,516 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6061302681992338 [2022-07-19 21:27:17,516 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3164 transitions. [2022-07-19 21:27:17,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3164 transitions. [2022-07-19 21:27:17,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:17,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3164 transitions. [2022-07-19 21:27:17,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 105.46666666666667) internal successors, (3164), 30 states have internal predecessors, (3164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:17,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:17,521 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:17,521 INFO L186 Difference]: Start difference. First operand has 326 places, 228 transitions, 2057 flow. Second operand 30 states and 3164 transitions. [2022-07-19 21:27:17,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 338 transitions, 3597 flow [2022-07-19 21:27:17,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 338 transitions, 3072 flow, removed 211 selfloop flow, removed 16 redundant places. [2022-07-19 21:27:17,558 INFO L242 Difference]: Finished difference. Result has 349 places, 230 transitions, 1957 flow [2022-07-19 21:27:17,558 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1774, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1957, PETRI_PLACES=349, PETRI_TRANSITIONS=230} [2022-07-19 21:27:17,558 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 192 predicate places. [2022-07-19 21:27:17,558 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 230 transitions, 1957 flow [2022-07-19 21:27:17,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:17,559 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:17,559 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] [2022-07-19 21:27:17,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-07-19 21:27:17,559 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:17,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:17,560 INFO L85 PathProgramCache]: Analyzing trace with hash -376384443, now seen corresponding path program 28 times [2022-07-19 21:27:17,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:17,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141739016] [2022-07-19 21:27:17,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:17,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:17,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:17,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:17,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141739016] [2022-07-19 21:27:17,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141739016] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:17,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:17,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:27:17,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550160020] [2022-07-19 21:27:17,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:17,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:27:17,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:17,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:27:17,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:27:17,797 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:27:17,798 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 230 transitions, 1957 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:17,798 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:17,798 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:27:17,798 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:18,752 INFO L129 PetriNetUnfolder]: 399/1597 cut-off events. [2022-07-19 21:27:18,752 INFO L130 PetriNetUnfolder]: For 12230/12234 co-relation queries the response was YES. [2022-07-19 21:27:18,767 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7098 conditions, 1597 events. 399/1597 cut-off events. For 12230/12234 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 10902 event pairs, 220 based on Foata normal form. 2/1511 useless extension candidates. Maximal degree in co-relation 6976. Up to 432 conditions per place. [2022-07-19 21:27:18,771 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 144 selfloop transitions, 55 changer transitions 37/321 dead transitions. [2022-07-19 21:27:18,771 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 321 transitions, 3195 flow [2022-07-19 21:27:18,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 21:27:18,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-19 21:27:18,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2751 transitions. [2022-07-19 21:27:18,773 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6080901856763926 [2022-07-19 21:27:18,773 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2751 transitions. [2022-07-19 21:27:18,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2751 transitions. [2022-07-19 21:27:18,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:18,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2751 transitions. [2022-07-19 21:27:18,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 105.8076923076923) internal successors, (2751), 26 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:18,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:18,778 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:18,778 INFO L186 Difference]: Start difference. First operand has 349 places, 230 transitions, 1957 flow. Second operand 26 states and 2751 transitions. [2022-07-19 21:27:18,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 321 transitions, 3195 flow [2022-07-19 21:27:18,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 321 transitions, 3003 flow, removed 57 selfloop flow, removed 24 redundant places. [2022-07-19 21:27:18,817 INFO L242 Difference]: Finished difference. Result has 343 places, 234 transitions, 2049 flow [2022-07-19 21:27:18,818 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1837, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2049, PETRI_PLACES=343, PETRI_TRANSITIONS=234} [2022-07-19 21:27:18,818 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 186 predicate places. [2022-07-19 21:27:18,818 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 234 transitions, 2049 flow [2022-07-19 21:27:18,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:18,818 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:18,819 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] [2022-07-19 21:27:18,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-07-19 21:27:18,819 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:18,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:18,819 INFO L85 PathProgramCache]: Analyzing trace with hash 991564081, now seen corresponding path program 29 times [2022-07-19 21:27:18,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:18,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431805099] [2022-07-19 21:27:18,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:18,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:19,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:19,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:19,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431805099] [2022-07-19 21:27:19,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431805099] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:19,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:19,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:27:19,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651667819] [2022-07-19 21:27:19,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:19,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:27:19,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:19,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:27:19,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:27:19,031 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:27:19,032 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 234 transitions, 2049 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:19,032 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:19,032 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:27:19,032 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:19,863 INFO L129 PetriNetUnfolder]: 386/1565 cut-off events. [2022-07-19 21:27:19,864 INFO L130 PetriNetUnfolder]: For 11749/11754 co-relation queries the response was YES. [2022-07-19 21:27:19,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6853 conditions, 1565 events. 386/1565 cut-off events. For 11749/11754 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 10624 event pairs, 214 based on Foata normal form. 1/1484 useless extension candidates. Maximal degree in co-relation 6736. Up to 432 conditions per place. [2022-07-19 21:27:19,879 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 145 selfloop transitions, 49 changer transitions 42/321 dead transitions. [2022-07-19 21:27:19,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 321 transitions, 3161 flow [2022-07-19 21:27:19,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-19 21:27:19,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-19 21:27:19,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2953 transitions. [2022-07-19 21:27:19,881 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6061165845648604 [2022-07-19 21:27:19,881 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2953 transitions. [2022-07-19 21:27:19,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2953 transitions. [2022-07-19 21:27:19,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:19,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2953 transitions. [2022-07-19 21:27:19,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 105.46428571428571) internal successors, (2953), 28 states have internal predecessors, (2953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:19,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:19,886 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:19,886 INFO L186 Difference]: Start difference. First operand has 343 places, 234 transitions, 2049 flow. Second operand 28 states and 2953 transitions. [2022-07-19 21:27:19,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 321 transitions, 3161 flow [2022-07-19 21:27:19,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 321 transitions, 2955 flow, removed 39 selfloop flow, removed 19 redundant places. [2022-07-19 21:27:19,924 INFO L242 Difference]: Finished difference. Result has 354 places, 231 transitions, 1960 flow [2022-07-19 21:27:19,924 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1900, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1960, PETRI_PLACES=354, PETRI_TRANSITIONS=231} [2022-07-19 21:27:19,925 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 197 predicate places. [2022-07-19 21:27:19,925 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 231 transitions, 1960 flow [2022-07-19 21:27:19,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:19,925 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:19,925 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] [2022-07-19 21:27:19,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-07-19 21:27:19,926 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:19,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:19,926 INFO L85 PathProgramCache]: Analyzing trace with hash -946938325, now seen corresponding path program 30 times [2022-07-19 21:27:19,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:19,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611033711] [2022-07-19 21:27:19,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:19,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:19,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:20,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:20,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:20,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611033711] [2022-07-19 21:27:20,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611033711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:20,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:20,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:27:20,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159016088] [2022-07-19 21:27:20,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:20,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:27:20,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:20,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:27:20,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:27:20,057 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:27:20,058 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 231 transitions, 1960 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:20,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:20,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:27:20,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:20,900 INFO L129 PetriNetUnfolder]: 365/1482 cut-off events. [2022-07-19 21:27:20,900 INFO L130 PetriNetUnfolder]: For 11189/11194 co-relation queries the response was YES. [2022-07-19 21:27:20,914 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6394 conditions, 1482 events. 365/1482 cut-off events. For 11189/11194 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 9775 event pairs, 196 based on Foata normal form. 1/1403 useless extension candidates. Maximal degree in co-relation 6271. Up to 432 conditions per place. [2022-07-19 21:27:20,918 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 127 selfloop transitions, 30 changer transitions 49/291 dead transitions. [2022-07-19 21:27:20,918 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 291 transitions, 2713 flow [2022-07-19 21:27:20,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 21:27:20,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-19 21:27:20,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2734 transitions. [2022-07-19 21:27:20,920 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6043324491600354 [2022-07-19 21:27:20,920 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2734 transitions. [2022-07-19 21:27:20,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2734 transitions. [2022-07-19 21:27:20,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:20,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2734 transitions. [2022-07-19 21:27:20,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 105.15384615384616) internal successors, (2734), 26 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:20,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:20,925 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:20,925 INFO L186 Difference]: Start difference. First operand has 354 places, 231 transitions, 1960 flow. Second operand 26 states and 2734 transitions. [2022-07-19 21:27:20,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 291 transitions, 2713 flow [2022-07-19 21:27:20,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 291 transitions, 2550 flow, removed 38 selfloop flow, removed 22 redundant places. [2022-07-19 21:27:20,961 INFO L242 Difference]: Finished difference. Result has 346 places, 201 transitions, 1501 flow [2022-07-19 21:27:20,961 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1825, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1501, PETRI_PLACES=346, PETRI_TRANSITIONS=201} [2022-07-19 21:27:20,961 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 189 predicate places. [2022-07-19 21:27:20,962 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 201 transitions, 1501 flow [2022-07-19 21:27:20,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:20,962 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:20,962 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] [2022-07-19 21:27:20,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-07-19 21:27:20,962 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:20,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:20,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1696444989, now seen corresponding path program 31 times [2022-07-19 21:27:20,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:20,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738369312] [2022-07-19 21:27:20,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:20,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:21,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:21,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:21,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738369312] [2022-07-19 21:27:21,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738369312] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:21,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:21,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:27:21,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140524843] [2022-07-19 21:27:21,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:21,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:27:21,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:21,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:27:21,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:27:21,138 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:27:21,139 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 201 transitions, 1501 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:21,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:21,139 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:27:21,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:22,090 INFO L129 PetriNetUnfolder]: 372/1480 cut-off events. [2022-07-19 21:27:22,090 INFO L130 PetriNetUnfolder]: For 11102/11109 co-relation queries the response was YES. [2022-07-19 21:27:22,104 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6433 conditions, 1480 events. 372/1480 cut-off events. For 11102/11109 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9859 event pairs, 189 based on Foata normal form. 2/1413 useless extension candidates. Maximal degree in co-relation 6319. Up to 432 conditions per place. [2022-07-19 21:27:22,108 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 170 selfloop transitions, 34 changer transitions 60/349 dead transitions. [2022-07-19 21:27:22,108 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 349 transitions, 3396 flow [2022-07-19 21:27:22,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-19 21:27:22,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-19 21:27:22,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3387 transitions. [2022-07-19 21:27:22,111 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6082974137931034 [2022-07-19 21:27:22,111 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3387 transitions. [2022-07-19 21:27:22,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3387 transitions. [2022-07-19 21:27:22,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:22,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3387 transitions. [2022-07-19 21:27:22,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 105.84375) internal successors, (3387), 32 states have internal predecessors, (3387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:22,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 174.0) internal successors, (5742), 33 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:22,116 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 174.0) internal successors, (5742), 33 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:22,116 INFO L186 Difference]: Start difference. First operand has 346 places, 201 transitions, 1501 flow. Second operand 32 states and 3387 transitions. [2022-07-19 21:27:22,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 349 transitions, 3396 flow [2022-07-19 21:27:22,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 349 transitions, 2992 flow, removed 119 selfloop flow, removed 25 redundant places. [2022-07-19 21:27:22,143 INFO L242 Difference]: Finished difference. Result has 333 places, 202 transitions, 1496 flow [2022-07-19 21:27:22,144 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1339, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1496, PETRI_PLACES=333, PETRI_TRANSITIONS=202} [2022-07-19 21:27:22,144 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 176 predicate places. [2022-07-19 21:27:22,144 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 202 transitions, 1496 flow [2022-07-19 21:27:22,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:22,144 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:22,144 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] [2022-07-19 21:27:22,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-07-19 21:27:22,145 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:22,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:22,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1127173249, now seen corresponding path program 32 times [2022-07-19 21:27:22,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:22,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449257861] [2022-07-19 21:27:22,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:22,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:22,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:22,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:22,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449257861] [2022-07-19 21:27:22,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449257861] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:22,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:22,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:27:22,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009256132] [2022-07-19 21:27:22,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:22,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:27:22,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:22,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:27:22,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:27:22,275 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:27:22,276 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 202 transitions, 1496 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:22,276 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:22,276 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:27:22,276 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:23,021 INFO L129 PetriNetUnfolder]: 360/1428 cut-off events. [2022-07-19 21:27:23,021 INFO L130 PetriNetUnfolder]: For 10483/10489 co-relation queries the response was YES. [2022-07-19 21:27:23,033 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6188 conditions, 1428 events. 360/1428 cut-off events. For 10483/10489 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9325 event pairs, 199 based on Foata normal form. 1/1348 useless extension candidates. Maximal degree in co-relation 6068. Up to 432 conditions per place. [2022-07-19 21:27:23,037 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 137 selfloop transitions, 52 changer transitions 33/307 dead transitions. [2022-07-19 21:27:23,037 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 307 transitions, 3202 flow [2022-07-19 21:27:23,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:27:23,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:27:23,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2546 transitions. [2022-07-19 21:27:23,039 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6096743295019157 [2022-07-19 21:27:23,039 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2546 transitions. [2022-07-19 21:27:23,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2546 transitions. [2022-07-19 21:27:23,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:23,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2546 transitions. [2022-07-19 21:27:23,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 106.08333333333333) internal successors, (2546), 24 states have internal predecessors, (2546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,043 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,043 INFO L186 Difference]: Start difference. First operand has 333 places, 202 transitions, 1496 flow. Second operand 24 states and 2546 transitions. [2022-07-19 21:27:23,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 307 transitions, 3202 flow [2022-07-19 21:27:23,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 307 transitions, 2737 flow, removed 133 selfloop flow, removed 31 redundant places. [2022-07-19 21:27:23,070 INFO L242 Difference]: Finished difference. Result has 319 places, 222 transitions, 1841 flow [2022-07-19 21:27:23,070 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1305, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1841, PETRI_PLACES=319, PETRI_TRANSITIONS=222} [2022-07-19 21:27:23,071 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 162 predicate places. [2022-07-19 21:27:23,071 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 222 transitions, 1841 flow [2022-07-19 21:27:23,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,071 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:23,071 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] [2022-07-19 21:27:23,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-07-19 21:27:23,072 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:23,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:23,072 INFO L85 PathProgramCache]: Analyzing trace with hash -755832695, now seen corresponding path program 33 times [2022-07-19 21:27:23,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:23,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789000987] [2022-07-19 21:27:23,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:23,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:23,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:23,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:23,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789000987] [2022-07-19 21:27:23,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789000987] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:23,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:23,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:23,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189693966] [2022-07-19 21:27:23,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:23,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:23,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:23,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:23,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:23,127 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2022-07-19 21:27:23,128 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 222 transitions, 1841 flow. Second operand has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,128 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:23,128 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2022-07-19 21:27:23,128 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:23,235 INFO L129 PetriNetUnfolder]: 43/494 cut-off events. [2022-07-19 21:27:23,235 INFO L130 PetriNetUnfolder]: For 1334/1334 co-relation queries the response was YES. [2022-07-19 21:27:23,238 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1318 conditions, 494 events. 43/494 cut-off events. For 1334/1334 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2088 event pairs, 26 based on Foata normal form. 1/471 useless extension candidates. Maximal degree in co-relation 1206. Up to 57 conditions per place. [2022-07-19 21:27:23,238 INFO L132 encePairwiseOnDemand]: 168/174 looper letters, 28 selfloop transitions, 5 changer transitions 1/153 dead transitions. [2022-07-19 21:27:23,238 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 153 transitions, 639 flow [2022-07-19 21:27:23,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:27:23,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:27:23,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 731 transitions. [2022-07-19 21:27:23,239 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8402298850574713 [2022-07-19 21:27:23,239 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 731 transitions. [2022-07-19 21:27:23,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 731 transitions. [2022-07-19 21:27:23,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:23,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 731 transitions. [2022-07-19 21:27:23,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.2) internal successors, (731), 5 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,241 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,241 INFO L186 Difference]: Start difference. First operand has 319 places, 222 transitions, 1841 flow. Second operand 5 states and 731 transitions. [2022-07-19 21:27:23,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 153 transitions, 639 flow [2022-07-19 21:27:23,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 153 transitions, 541 flow, removed 34 selfloop flow, removed 33 redundant places. [2022-07-19 21:27:23,246 INFO L242 Difference]: Finished difference. Result has 237 places, 147 transitions, 450 flow [2022-07-19 21:27:23,246 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=450, PETRI_PLACES=237, PETRI_TRANSITIONS=147} [2022-07-19 21:27:23,246 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 80 predicate places. [2022-07-19 21:27:23,246 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 147 transitions, 450 flow [2022-07-19 21:27:23,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,246 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:23,247 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:23,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-07-19 21:27:23,247 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:23,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:23,247 INFO L85 PathProgramCache]: Analyzing trace with hash 664491577, now seen corresponding path program 1 times [2022-07-19 21:27:23,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:23,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303295833] [2022-07-19 21:27:23,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:23,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:23,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:23,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:23,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303295833] [2022-07-19 21:27:23,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303295833] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:23,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:23,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-19 21:27:23,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901475194] [2022-07-19 21:27:23,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:23,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-19 21:27:23,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:23,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-19 21:27:23,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-07-19 21:27:23,722 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-19 21:27:23,723 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 147 transitions, 450 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,723 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:23,723 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-19 21:27:23,723 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:32,927 INFO L129 PetriNetUnfolder]: 586/1832 cut-off events. [2022-07-19 21:27:32,927 INFO L130 PetriNetUnfolder]: For 2595/2595 co-relation queries the response was YES. [2022-07-19 21:27:32,935 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4627 conditions, 1832 events. 586/1832 cut-off events. For 2595/2595 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 10950 event pairs, 0 based on Foata normal form. 1/1807 useless extension candidates. Maximal degree in co-relation 4544. Up to 135 conditions per place. [2022-07-19 21:27:32,938 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 342 selfloop transitions, 20 changer transitions 183/616 dead transitions. [2022-07-19 21:27:32,939 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 616 transitions, 3610 flow [2022-07-19 21:27:32,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-07-19 21:27:32,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2022-07-19 21:27:32,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 7849 transitions. [2022-07-19 21:27:32,943 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5126044932079414 [2022-07-19 21:27:32,944 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 7849 transitions. [2022-07-19 21:27:32,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 7849 transitions. [2022-07-19 21:27:32,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:32,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 7849 transitions. [2022-07-19 21:27:32,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 89.19318181818181) internal successors, (7849), 88 states have internal predecessors, (7849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:32,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:32,958 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:32,958 INFO L186 Difference]: Start difference. First operand has 237 places, 147 transitions, 450 flow. Second operand 88 states and 7849 transitions. [2022-07-19 21:27:32,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 616 transitions, 3610 flow [2022-07-19 21:27:32,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 616 transitions, 3596 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-19 21:27:32,968 INFO L242 Difference]: Finished difference. Result has 387 places, 147 transitions, 627 flow [2022-07-19 21:27:32,968 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=627, PETRI_PLACES=387, PETRI_TRANSITIONS=147} [2022-07-19 21:27:32,968 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 230 predicate places. [2022-07-19 21:27:32,968 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 147 transitions, 627 flow [2022-07-19 21:27:32,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:32,969 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:32,969 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:32,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-07-19 21:27:32,969 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:32,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:32,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1559279357, now seen corresponding path program 2 times [2022-07-19 21:27:32,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:32,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362703669] [2022-07-19 21:27:32,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:32,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:33,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:33,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:33,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362703669] [2022-07-19 21:27:33,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362703669] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:33,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:33,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-19 21:27:33,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537019572] [2022-07-19 21:27:33,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:33,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-19 21:27:33,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:33,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-19 21:27:33,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2022-07-19 21:27:33,504 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-19 21:27:33,505 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 147 transitions, 627 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:33,505 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:33,505 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-19 21:27:33,505 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:43,398 INFO L129 PetriNetUnfolder]: 889/2794 cut-off events. [2022-07-19 21:27:43,399 INFO L130 PetriNetUnfolder]: For 16705/16705 co-relation queries the response was YES. [2022-07-19 21:27:43,424 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10741 conditions, 2794 events. 889/2794 cut-off events. For 16705/16705 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 19428 event pairs, 50 based on Foata normal form. 1/2736 useless extension candidates. Maximal degree in co-relation 10587. Up to 895 conditions per place. [2022-07-19 21:27:43,430 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 361 selfloop transitions, 20 changer transitions 160/612 dead transitions. [2022-07-19 21:27:43,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 612 transitions, 4972 flow [2022-07-19 21:27:43,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-07-19 21:27:43,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2022-07-19 21:27:43,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 7845 transitions. [2022-07-19 21:27:43,434 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5123432601880877 [2022-07-19 21:27:43,435 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 7845 transitions. [2022-07-19 21:27:43,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 7845 transitions. [2022-07-19 21:27:43,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:43,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 7845 transitions. [2022-07-19 21:27:43,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 89.14772727272727) internal successors, (7845), 88 states have internal predecessors, (7845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:43,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:43,447 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:43,448 INFO L186 Difference]: Start difference. First operand has 387 places, 147 transitions, 627 flow. Second operand 88 states and 7845 transitions. [2022-07-19 21:27:43,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 612 transitions, 4972 flow [2022-07-19 21:27:43,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 612 transitions, 3579 flow, removed 457 selfloop flow, removed 82 redundant places. [2022-07-19 21:27:43,478 INFO L242 Difference]: Finished difference. Result has 406 places, 160 transitions, 863 flow [2022-07-19 21:27:43,478 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=863, PETRI_PLACES=406, PETRI_TRANSITIONS=160} [2022-07-19 21:27:43,479 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 249 predicate places. [2022-07-19 21:27:43,479 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 160 transitions, 863 flow [2022-07-19 21:27:43,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:43,479 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:43,479 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:43,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-07-19 21:27:43,480 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:43,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:43,480 INFO L85 PathProgramCache]: Analyzing trace with hash -918801979, now seen corresponding path program 3 times [2022-07-19 21:27:43,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:43,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581894112] [2022-07-19 21:27:43,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:43,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:43,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:43,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:43,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:43,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581894112] [2022-07-19 21:27:43,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581894112] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:43,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:43,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-19 21:27:43,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888104812] [2022-07-19 21:27:43,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:43,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-19 21:27:43,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:43,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-19 21:27:43,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2022-07-19 21:27:43,910 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-19 21:27:43,911 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 160 transitions, 863 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:43,911 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:43,911 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-19 21:27:43,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:54,434 INFO L129 PetriNetUnfolder]: 983/3177 cut-off events. [2022-07-19 21:27:54,434 INFO L130 PetriNetUnfolder]: For 34130/34130 co-relation queries the response was YES. [2022-07-19 21:27:54,463 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14062 conditions, 3177 events. 983/3177 cut-off events. For 34130/34130 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 23224 event pairs, 44 based on Foata normal form. 1/3142 useless extension candidates. Maximal degree in co-relation 13890. Up to 262 conditions per place. [2022-07-19 21:27:54,470 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 461 selfloop transitions, 25 changer transitions 158/715 dead transitions. [2022-07-19 21:27:54,471 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 715 transitions, 7419 flow [2022-07-19 21:27:54,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-07-19 21:27:54,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-07-19 21:27:54,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7508 transitions. [2022-07-19 21:27:54,475 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5136836343732896 [2022-07-19 21:27:54,475 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7508 transitions. [2022-07-19 21:27:54,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7508 transitions. [2022-07-19 21:27:54,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:54,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7508 transitions. [2022-07-19 21:27:54,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.38095238095238) internal successors, (7508), 84 states have internal predecessors, (7508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:54,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:54,488 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:54,488 INFO L186 Difference]: Start difference. First operand has 406 places, 160 transitions, 863 flow. Second operand 84 states and 7508 transitions. [2022-07-19 21:27:54,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 715 transitions, 7419 flow [2022-07-19 21:27:54,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 715 transitions, 6780 flow, removed 314 selfloop flow, removed 34 redundant places. [2022-07-19 21:27:54,577 INFO L242 Difference]: Finished difference. Result has 453 places, 166 transitions, 1060 flow [2022-07-19 21:27:54,577 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1060, PETRI_PLACES=453, PETRI_TRANSITIONS=166} [2022-07-19 21:27:54,578 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 296 predicate places. [2022-07-19 21:27:54,578 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 166 transitions, 1060 flow [2022-07-19 21:27:54,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:54,578 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:54,578 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:54,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-07-19 21:27:54,579 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:54,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:54,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1258355779, now seen corresponding path program 4 times [2022-07-19 21:27:54,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:54,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481423488] [2022-07-19 21:27:54,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:54,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:55,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:55,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:55,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481423488] [2022-07-19 21:27:55,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481423488] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:55,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:55,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-19 21:27:55,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514902513] [2022-07-19 21:27:55,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:55,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-19 21:27:55,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:55,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-19 21:27:55,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2022-07-19 21:27:55,095 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-19 21:27:55,096 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 166 transitions, 1060 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:55,096 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:55,096 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-19 21:27:55,096 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:05,570 INFO L129 PetriNetUnfolder]: 1272/4038 cut-off events. [2022-07-19 21:28:05,570 INFO L130 PetriNetUnfolder]: For 44588/44588 co-relation queries the response was YES. [2022-07-19 21:28:05,617 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19927 conditions, 4038 events. 1272/4038 cut-off events. For 44588/44588 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 31570 event pairs, 116 based on Foata normal form. 1/3957 useless extension candidates. Maximal degree in co-relation 19718. Up to 1520 conditions per place. [2022-07-19 21:28:05,626 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 430 selfloop transitions, 22 changer transitions 156/679 dead transitions. [2022-07-19 21:28:05,627 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 679 transitions, 8464 flow [2022-07-19 21:28:05,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-07-19 21:28:05,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-07-19 21:28:05,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7490 transitions. [2022-07-19 21:28:05,631 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5124521072796935 [2022-07-19 21:28:05,631 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7490 transitions. [2022-07-19 21:28:05,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7490 transitions. [2022-07-19 21:28:05,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:05,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7490 transitions. [2022-07-19 21:28:05,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.16666666666667) internal successors, (7490), 84 states have internal predecessors, (7490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:05,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:05,643 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:05,643 INFO L186 Difference]: Start difference. First operand has 453 places, 166 transitions, 1060 flow. Second operand 84 states and 7490 transitions. [2022-07-19 21:28:05,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 679 transitions, 8464 flow [2022-07-19 21:28:05,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 679 transitions, 7142 flow, removed 582 selfloop flow, removed 69 redundant places. [2022-07-19 21:28:05,760 INFO L242 Difference]: Finished difference. Result has 481 places, 179 transitions, 1339 flow [2022-07-19 21:28:05,760 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1339, PETRI_PLACES=481, PETRI_TRANSITIONS=179} [2022-07-19 21:28:05,760 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 324 predicate places. [2022-07-19 21:28:05,761 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 179 transitions, 1339 flow [2022-07-19 21:28:05,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:05,761 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:05,761 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:28:05,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-07-19 21:28:05,761 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:28:05,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:05,762 INFO L85 PathProgramCache]: Analyzing trace with hash -248690663, now seen corresponding path program 5 times [2022-07-19 21:28:05,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:05,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087315696] [2022-07-19 21:28:05,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:05,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:06,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:06,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:06,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087315696] [2022-07-19 21:28:06,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087315696] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:06,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:06,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-19 21:28:06,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627622343] [2022-07-19 21:28:06,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:06,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-19 21:28:06,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:06,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-19 21:28:06,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-07-19 21:28:06,291 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-19 21:28:06,292 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 179 transitions, 1339 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:06,292 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:06,292 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-19 21:28:06,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:17,338 INFO L129 PetriNetUnfolder]: 1263/4070 cut-off events. [2022-07-19 21:28:17,338 INFO L130 PetriNetUnfolder]: For 74887/74887 co-relation queries the response was YES. [2022-07-19 21:28:17,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22745 conditions, 4070 events. 1263/4070 cut-off events. For 74887/74887 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 32119 event pairs, 106 based on Foata normal form. 1/3960 useless extension candidates. Maximal degree in co-relation 22518. Up to 895 conditions per place. [2022-07-19 21:28:17,407 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 321 selfloop transitions, 58 changer transitions 51/501 dead transitions. [2022-07-19 21:28:17,407 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 501 transitions, 7259 flow [2022-07-19 21:28:17,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-19 21:28:17,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-07-19 21:28:17,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 3696 transitions. [2022-07-19 21:28:17,409 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5310344827586206 [2022-07-19 21:28:17,409 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 3696 transitions. [2022-07-19 21:28:17,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 3696 transitions. [2022-07-19 21:28:17,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:17,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 3696 transitions. [2022-07-19 21:28:17,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 92.4) internal successors, (3696), 40 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:17,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 174.0) internal successors, (7134), 41 states have internal predecessors, (7134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:17,415 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 174.0) internal successors, (7134), 41 states have internal predecessors, (7134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:17,416 INFO L186 Difference]: Start difference. First operand has 481 places, 179 transitions, 1339 flow. Second operand 40 states and 3696 transitions. [2022-07-19 21:28:17,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 501 transitions, 7259 flow [2022-07-19 21:28:17,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 501 transitions, 6504 flow, removed 366 selfloop flow, removed 34 redundant places. [2022-07-19 21:28:17,620 INFO L242 Difference]: Finished difference. Result has 445 places, 205 transitions, 2105 flow [2022-07-19 21:28:17,620 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1246, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=2105, PETRI_PLACES=445, PETRI_TRANSITIONS=205} [2022-07-19 21:28:17,621 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 288 predicate places. [2022-07-19 21:28:17,621 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 205 transitions, 2105 flow [2022-07-19 21:28:17,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:17,621 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:17,621 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:28:17,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-07-19 21:28:17,622 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:28:17,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:17,622 INFO L85 PathProgramCache]: Analyzing trace with hash -719380667, now seen corresponding path program 6 times [2022-07-19 21:28:17,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:17,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917698808] [2022-07-19 21:28:17,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:17,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:18,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:18,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:18,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917698808] [2022-07-19 21:28:18,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917698808] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:18,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:18,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-19 21:28:18,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477461443] [2022-07-19 21:28:18,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:18,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-19 21:28:18,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:18,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-19 21:28:18,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2022-07-19 21:28:18,026 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-19 21:28:18,027 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 205 transitions, 2105 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:18,027 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:18,027 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-19 21:28:18,027 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:28,988 INFO L129 PetriNetUnfolder]: 1425/4615 cut-off events. [2022-07-19 21:28:28,988 INFO L130 PetriNetUnfolder]: For 79565/79565 co-relation queries the response was YES. [2022-07-19 21:28:29,049 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26174 conditions, 4615 events. 1425/4615 cut-off events. For 79565/79565 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 37459 event pairs, 110 based on Foata normal form. 1/4557 useless extension candidates. Maximal degree in co-relation 25953. Up to 471 conditions per place. [2022-07-19 21:28:29,063 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 543 selfloop transitions, 38 changer transitions 163/815 dead transitions. [2022-07-19 21:28:29,064 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 815 transitions, 11723 flow [2022-07-19 21:28:29,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-07-19 21:28:29,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-07-19 21:28:29,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7507 transitions. [2022-07-19 21:28:29,068 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5136152162014231 [2022-07-19 21:28:29,068 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7507 transitions. [2022-07-19 21:28:29,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7507 transitions. [2022-07-19 21:28:29,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:29,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7507 transitions. [2022-07-19 21:28:29,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.36904761904762) internal successors, (7507), 84 states have internal predecessors, (7507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:29,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:29,081 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:29,081 INFO L186 Difference]: Start difference. First operand has 445 places, 205 transitions, 2105 flow. Second operand 84 states and 7507 transitions. [2022-07-19 21:28:29,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 815 transitions, 11723 flow [2022-07-19 21:28:29,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 815 transitions, 10492 flow, removed 328 selfloop flow, removed 21 redundant places. [2022-07-19 21:28:29,385 INFO L242 Difference]: Finished difference. Result has 563 places, 212 transitions, 1922 flow [2022-07-19 21:28:29,385 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1922, PETRI_PLACES=563, PETRI_TRANSITIONS=212} [2022-07-19 21:28:29,386 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 406 predicate places. [2022-07-19 21:28:29,386 INFO L495 AbstractCegarLoop]: Abstraction has has 563 places, 212 transitions, 1922 flow [2022-07-19 21:28:29,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:29,386 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:29,386 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:28:29,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-07-19 21:28:29,387 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:28:29,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:29,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1821997415, now seen corresponding path program 7 times [2022-07-19 21:28:29,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:29,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049237928] [2022-07-19 21:28:29,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:29,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:29,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:29,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:29,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049237928] [2022-07-19 21:28:29,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049237928] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:29,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:29,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-19 21:28:29,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714726654] [2022-07-19 21:28:29,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:29,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-19 21:28:29,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:29,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-19 21:28:29,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-07-19 21:28:29,915 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-19 21:28:29,916 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 212 transitions, 1922 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:29,916 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:29,916 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-19 21:28:29,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:40,743 INFO L129 PetriNetUnfolder]: 1821/5775 cut-off events. [2022-07-19 21:28:40,743 INFO L130 PetriNetUnfolder]: For 147606/147610 co-relation queries the response was YES. [2022-07-19 21:28:40,838 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38056 conditions, 5775 events. 1821/5775 cut-off events. For 147606/147610 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 50044 event pairs, 275 based on Foata normal form. 1/5633 useless extension candidates. Maximal degree in co-relation 37775. Up to 1517 conditions per place. [2022-07-19 21:28:40,857 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 460 selfloop transitions, 27 changer transitions 156/714 dead transitions. [2022-07-19 21:28:40,857 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 714 transitions, 12026 flow [2022-07-19 21:28:40,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-07-19 21:28:40,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-07-19 21:28:40,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7541 transitions. [2022-07-19 21:28:40,861 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5159414340448824 [2022-07-19 21:28:40,862 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7541 transitions. [2022-07-19 21:28:40,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7541 transitions. [2022-07-19 21:28:40,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:40,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7541 transitions. [2022-07-19 21:28:40,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.77380952380952) internal successors, (7541), 84 states have internal predecessors, (7541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:40,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:40,874 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:40,875 INFO L186 Difference]: Start difference. First operand has 563 places, 212 transitions, 1922 flow. Second operand 84 states and 7541 transitions. [2022-07-19 21:28:40,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 714 transitions, 12026 flow [2022-07-19 21:28:41,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 714 transitions, 11169 flow, removed 336 selfloop flow, removed 65 redundant places. [2022-07-19 21:28:41,466 INFO L242 Difference]: Finished difference. Result has 593 places, 223 transitions, 2219 flow [2022-07-19 21:28:41,466 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1679, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=2219, PETRI_PLACES=593, PETRI_TRANSITIONS=223} [2022-07-19 21:28:41,466 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 436 predicate places. [2022-07-19 21:28:41,467 INFO L495 AbstractCegarLoop]: Abstraction has has 593 places, 223 transitions, 2219 flow [2022-07-19 21:28:41,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:41,467 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:41,467 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:28:41,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-07-19 21:28:41,467 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:28:41,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:41,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1707406083, now seen corresponding path program 8 times [2022-07-19 21:28:41,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:41,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964568184] [2022-07-19 21:28:41,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:41,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:41,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:41,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:41,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964568184] [2022-07-19 21:28:41,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964568184] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:41,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:41,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-19 21:28:41,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086035265] [2022-07-19 21:28:41,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:41,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-19 21:28:41,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:41,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-19 21:28:41,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2022-07-19 21:28:41,938 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-19 21:28:41,939 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 223 transitions, 2219 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:41,939 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:41,939 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-19 21:28:41,939 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:50,859 INFO L129 PetriNetUnfolder]: 1961/6274 cut-off events. [2022-07-19 21:28:50,859 INFO L130 PetriNetUnfolder]: For 243987/243991 co-relation queries the response was YES. [2022-07-19 21:28:50,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46125 conditions, 6274 events. 1961/6274 cut-off events. For 243987/243991 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 55137 event pairs, 269 based on Foata normal form. 1/6190 useless extension candidates. Maximal degree in co-relation 45824. Up to 993 conditions per place. [2022-07-19 21:28:51,020 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 578 selfloop transitions, 38 changer transitions 168/855 dead transitions. [2022-07-19 21:28:51,021 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 855 transitions, 14009 flow [2022-07-19 21:28:51,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-07-19 21:28:51,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-07-19 21:28:51,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7505 transitions. [2022-07-19 21:28:51,026 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5134783798576902 [2022-07-19 21:28:51,026 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7505 transitions. [2022-07-19 21:28:51,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7505 transitions. [2022-07-19 21:28:51,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:51,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7505 transitions. [2022-07-19 21:28:51,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.3452380952381) internal successors, (7505), 84 states have internal predecessors, (7505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:51,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:51,042 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:51,042 INFO L186 Difference]: Start difference. First operand has 593 places, 223 transitions, 2219 flow. Second operand 84 states and 7505 transitions. [2022-07-19 21:28:51,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 855 transitions, 14009 flow [2022-07-19 21:28:51,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 855 transitions, 12423 flow, removed 749 selfloop flow, removed 70 redundant places. [2022-07-19 21:28:52,003 INFO L242 Difference]: Finished difference. Result has 613 places, 231 transitions, 2461 flow [2022-07-19 21:28:52,003 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1958, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=2461, PETRI_PLACES=613, PETRI_TRANSITIONS=231} [2022-07-19 21:28:52,003 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 456 predicate places. [2022-07-19 21:28:52,003 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 231 transitions, 2461 flow [2022-07-19 21:28:52,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:52,004 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:52,004 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:28:52,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-07-19 21:28:52,004 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:28:52,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:52,004 INFO L85 PathProgramCache]: Analyzing trace with hash -2056909789, now seen corresponding path program 9 times [2022-07-19 21:28:52,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:52,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83685836] [2022-07-19 21:28:52,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:52,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:52,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:52,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:52,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83685836] [2022-07-19 21:28:52,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83685836] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:52,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:52,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-19 21:28:52,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244805796] [2022-07-19 21:28:52,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:52,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-19 21:28:52,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:52,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-19 21:28:52,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2022-07-19 21:28:52,535 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-19 21:28:52,536 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 231 transitions, 2461 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:52,536 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:52,536 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-19 21:28:52,536 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:02,246 INFO L129 PetriNetUnfolder]: 2196/7052 cut-off events. [2022-07-19 21:29:02,247 INFO L130 PetriNetUnfolder]: For 245128/245140 co-relation queries the response was YES. [2022-07-19 21:29:02,414 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50787 conditions, 7052 events. 2196/7052 cut-off events. For 245128/245140 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 63852 event pairs, 701 based on Foata normal form. 3/6862 useless extension candidates. Maximal degree in co-relation 50479. Up to 1872 conditions per place. [2022-07-19 21:29:02,439 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 470 selfloop transitions, 28 changer transitions 161/730 dead transitions. [2022-07-19 21:29:02,440 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 730 transitions, 13762 flow [2022-07-19 21:29:02,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-07-19 21:29:02,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-07-19 21:29:02,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7543 transitions. [2022-07-19 21:29:02,444 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5160782703886152 [2022-07-19 21:29:02,444 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7543 transitions. [2022-07-19 21:29:02,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7543 transitions. [2022-07-19 21:29:02,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:02,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7543 transitions. [2022-07-19 21:29:02,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.79761904761905) internal successors, (7543), 84 states have internal predecessors, (7543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:02,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:02,456 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:02,456 INFO L186 Difference]: Start difference. First operand has 613 places, 231 transitions, 2461 flow. Second operand 84 states and 7543 transitions. [2022-07-19 21:29:02,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 730 transitions, 13762 flow [2022-07-19 21:29:03,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 730 transitions, 12454 flow, removed 561 selfloop flow, removed 66 redundant places. [2022-07-19 21:29:03,365 INFO L242 Difference]: Finished difference. Result has 643 places, 243 transitions, 2749 flow [2022-07-19 21:29:03,365 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2169, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=2749, PETRI_PLACES=643, PETRI_TRANSITIONS=243} [2022-07-19 21:29:03,366 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 486 predicate places. [2022-07-19 21:29:03,366 INFO L495 AbstractCegarLoop]: Abstraction has has 643 places, 243 transitions, 2749 flow [2022-07-19 21:29:03,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:03,366 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:03,366 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:29:03,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-07-19 21:29:03,367 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:29:03,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:03,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1243536633, now seen corresponding path program 10 times [2022-07-19 21:29:03,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:03,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339336284] [2022-07-19 21:29:03,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:03,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:03,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:03,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:03,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339336284] [2022-07-19 21:29:03,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339336284] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:03,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:03,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-19 21:29:03,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878871709] [2022-07-19 21:29:03,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:03,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-19 21:29:03,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:03,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-19 21:29:03,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2022-07-19 21:29:03,928 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-19 21:29:03,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 643 places, 243 transitions, 2749 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:03,929 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:03,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-19 21:29:03,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:16,326 INFO L129 PetriNetUnfolder]: 2370/7588 cut-off events. [2022-07-19 21:29:16,326 INFO L130 PetriNetUnfolder]: For 332609/332613 co-relation queries the response was YES. [2022-07-19 21:29:16,483 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58557 conditions, 7588 events. 2370/7588 cut-off events. For 332609/332613 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 70195 event pairs, 423 based on Foata normal form. 1/7481 useless extension candidates. Maximal degree in co-relation 58229. Up to 1751 conditions per place. [2022-07-19 21:29:16,510 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 602 selfloop transitions, 36 changer transitions 173/882 dead transitions. [2022-07-19 21:29:16,510 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 661 places, 882 transitions, 15503 flow [2022-07-19 21:29:16,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-07-19 21:29:16,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-07-19 21:29:16,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7504 transitions. [2022-07-19 21:29:16,514 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5134099616858238 [2022-07-19 21:29:16,514 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7504 transitions. [2022-07-19 21:29:16,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7504 transitions. [2022-07-19 21:29:16,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:16,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7504 transitions. [2022-07-19 21:29:16,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.33333333333333) internal successors, (7504), 84 states have internal predecessors, (7504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:16,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:16,526 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:16,526 INFO L186 Difference]: Start difference. First operand has 643 places, 243 transitions, 2749 flow. Second operand 84 states and 7504 transitions. [2022-07-19 21:29:16,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 661 places, 882 transitions, 15503 flow [2022-07-19 21:29:17,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 882 transitions, 13951 flow, removed 750 selfloop flow, removed 70 redundant places. [2022-07-19 21:29:17,957 INFO L242 Difference]: Finished difference. Result has 665 places, 252 transitions, 3046 flow [2022-07-19 21:29:17,958 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2461, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=3046, PETRI_PLACES=665, PETRI_TRANSITIONS=252} [2022-07-19 21:29:17,958 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 508 predicate places. [2022-07-19 21:29:17,958 INFO L495 AbstractCegarLoop]: Abstraction has has 665 places, 252 transitions, 3046 flow [2022-07-19 21:29:17,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:17,959 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:17,959 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:29:17,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-07-19 21:29:17,959 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:29:17,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:17,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1234404879, now seen corresponding path program 11 times [2022-07-19 21:29:17,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:17,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440338543] [2022-07-19 21:29:17,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:17,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:18,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:18,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:18,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440338543] [2022-07-19 21:29:18,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440338543] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:18,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:18,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-19 21:29:18,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131359524] [2022-07-19 21:29:18,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:18,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-19 21:29:18,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:18,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-19 21:29:18,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2022-07-19 21:29:18,477 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-19 21:29:18,478 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 665 places, 252 transitions, 3046 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:18,478 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:18,478 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-19 21:29:18,478 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:32,103 INFO L129 PetriNetUnfolder]: 2354/7347 cut-off events. [2022-07-19 21:29:32,104 INFO L130 PetriNetUnfolder]: For 325645/325653 co-relation queries the response was YES. [2022-07-19 21:29:32,283 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58387 conditions, 7347 events. 2354/7347 cut-off events. For 325645/325653 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 66049 event pairs, 1308 based on Foata normal form. 3/7185 useless extension candidates. Maximal degree in co-relation 58050. Up to 1903 conditions per place. [2022-07-19 21:29:32,317 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 483 selfloop transitions, 29 changer transitions 151/734 dead transitions. [2022-07-19 21:29:32,317 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 683 places, 734 transitions, 15238 flow [2022-07-19 21:29:32,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-07-19 21:29:32,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-07-19 21:29:32,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7545 transitions. [2022-07-19 21:29:32,322 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5162151067323482 [2022-07-19 21:29:32,323 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7545 transitions. [2022-07-19 21:29:32,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7545 transitions. [2022-07-19 21:29:32,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:32,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7545 transitions. [2022-07-19 21:29:32,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.82142857142857) internal successors, (7545), 84 states have internal predecessors, (7545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:32,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:32,339 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:32,339 INFO L186 Difference]: Start difference. First operand has 665 places, 252 transitions, 3046 flow. Second operand 84 states and 7545 transitions. [2022-07-19 21:29:32,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 683 places, 734 transitions, 15238 flow [2022-07-19 21:29:34,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 621 places, 734 transitions, 13735 flow, removed 659 selfloop flow, removed 62 redundant places. [2022-07-19 21:29:34,135 INFO L242 Difference]: Finished difference. Result has 700 places, 265 transitions, 3357 flow [2022-07-19 21:29:34,135 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2721, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=3357, PETRI_PLACES=700, PETRI_TRANSITIONS=265} [2022-07-19 21:29:34,135 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 543 predicate places. [2022-07-19 21:29:34,135 INFO L495 AbstractCegarLoop]: Abstraction has has 700 places, 265 transitions, 3357 flow [2022-07-19 21:29:34,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:34,136 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:34,136 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:29:34,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-07-19 21:29:34,136 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:29:34,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:34,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1351584869, now seen corresponding path program 12 times [2022-07-19 21:29:34,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:34,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113219557] [2022-07-19 21:29:34,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:34,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:34,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:34,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:34,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:34,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113219557] [2022-07-19 21:29:34,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113219557] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:34,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:34,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-19 21:29:34,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315063579] [2022-07-19 21:29:34,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:34,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-19 21:29:34,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:34,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-19 21:29:34,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2022-07-19 21:29:34,676 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-19 21:29:34,677 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 700 places, 265 transitions, 3357 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:34,677 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:34,677 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-19 21:29:34,677 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:42,428 INFO L129 PetriNetUnfolder]: 2818/8960 cut-off events. [2022-07-19 21:29:42,428 INFO L130 PetriNetUnfolder]: For 456442/456442 co-relation queries the response was YES. [2022-07-19 21:29:42,667 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73979 conditions, 8960 events. 2818/8960 cut-off events. For 456442/456442 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 85377 event pairs, 214 based on Foata normal form. 1/8825 useless extension candidates. Maximal degree in co-relation 73617. Up to 2410 conditions per place. [2022-07-19 21:29:42,705 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 626 selfloop transitions, 59 changer transitions 94/850 dead transitions. [2022-07-19 21:29:42,706 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 678 places, 850 transitions, 17560 flow [2022-07-19 21:29:42,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-19 21:29:42,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-07-19 21:29:42,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 4066 transitions. [2022-07-19 21:29:42,708 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5310867293625914 [2022-07-19 21:29:42,708 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 4066 transitions. [2022-07-19 21:29:42,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 4066 transitions. [2022-07-19 21:29:42,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:42,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 4066 transitions. [2022-07-19 21:29:42,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 92.4090909090909) internal successors, (4066), 44 states have internal predecessors, (4066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:42,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 174.0) internal successors, (7830), 45 states have internal predecessors, (7830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:42,715 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 174.0) internal successors, (7830), 45 states have internal predecessors, (7830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:42,715 INFO L186 Difference]: Start difference. First operand has 700 places, 265 transitions, 3357 flow. Second operand 44 states and 4066 transitions. [2022-07-19 21:29:42,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 678 places, 850 transitions, 17560 flow [2022-07-19 21:29:44,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 850 transitions, 15619 flow, removed 953 selfloop flow, removed 70 redundant places. [2022-07-19 21:29:44,881 INFO L242 Difference]: Finished difference. Result has 644 places, 302 transitions, 4390 flow [2022-07-19 21:29:44,882 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3032, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=4390, PETRI_PLACES=644, PETRI_TRANSITIONS=302} [2022-07-19 21:29:44,882 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 487 predicate places. [2022-07-19 21:29:44,882 INFO L495 AbstractCegarLoop]: Abstraction has has 644 places, 302 transitions, 4390 flow [2022-07-19 21:29:44,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:44,882 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:44,883 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:29:44,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-07-19 21:29:44,883 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:29:44,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:44,883 INFO L85 PathProgramCache]: Analyzing trace with hash -2122268321, now seen corresponding path program 13 times [2022-07-19 21:29:44,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:44,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223423927] [2022-07-19 21:29:44,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:44,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:45,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:45,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:45,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223423927] [2022-07-19 21:29:45,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223423927] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:45,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:45,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-19 21:29:45,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888706528] [2022-07-19 21:29:45,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:45,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-19 21:29:45,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:45,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-19 21:29:45,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2022-07-19 21:29:45,402 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-19 21:29:45,403 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 644 places, 302 transitions, 4390 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:45,403 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:45,403 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-19 21:29:45,403 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand