./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/test-easy10.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330fe6aa-db34-4ec1-b164-37dd8941a3c1/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330fe6aa-db34-4ec1-b164-37dd8941a3c1/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330fe6aa-db34-4ec1-b164-37dd8941a3c1/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330fe6aa-db34-4ec1-b164-37dd8941a3c1/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy10.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330fe6aa-db34-4ec1-b164-37dd8941a3c1/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330fe6aa-db34-4ec1-b164-37dd8941a3c1/bin/uautomizer-DrprNOufMa --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 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:33:04,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:33:04,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:33:04,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:33:04,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:33:04,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:33:04,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:33:04,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:33:04,462 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:33:04,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:33:04,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:33:04,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:33:04,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:33:04,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:33:04,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:33:04,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:33:04,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:33:04,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:33:04,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:33:04,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:33:04,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:33:04,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:33:04,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:33:04,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:33:04,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:33:04,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:33:04,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:33:04,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:33:04,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:33:04,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:33:04,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:33:04,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:33:04,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:33:04,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:33:04,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:33:04,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:33:04,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:33:04,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:33:04,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:33:04,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:33:04,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:33:04,491 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330fe6aa-db34-4ec1-b164-37dd8941a3c1/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 00:33:04,509 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:33:04,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:33:04,509 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:33:04,509 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:33:04,510 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:33:04,510 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:33:04,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:33:04,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:33:04,511 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:33:04,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:33:04,511 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:33:04,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:33:04,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:33:04,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:33:04,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:33:04,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:33:04,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:33:04,512 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:33:04,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:33:04,512 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:33:04,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:33:04,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:33:04,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:33:04,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:33:04,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:33:04,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:33:04,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:33:04,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:33:04,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:33:04,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:33:04,513 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:33:04,513 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:33:04,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:33:04,514 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:33:04,514 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330fe6aa-db34-4ec1-b164-37dd8941a3c1/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330fe6aa-db34-4ec1-b164-37dd8941a3c1/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b [2021-12-07 00:33:04,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:33:04,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:33:04,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:33:04,706 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:33:04,707 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:33:04,708 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330fe6aa-db34-4ec1-b164-37dd8941a3c1/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/weaver/test-easy10.wvr.c [2021-12-07 00:33:04,757 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330fe6aa-db34-4ec1-b164-37dd8941a3c1/bin/uautomizer-DrprNOufMa/data/7a34279fa/0bab41ee335f4461a6d404a6af0280bd/FLAG3ef2e6e24 [2021-12-07 00:33:05,141 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:33:05,142 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330fe6aa-db34-4ec1-b164-37dd8941a3c1/sv-benchmarks/c/weaver/test-easy10.wvr.c [2021-12-07 00:33:05,147 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330fe6aa-db34-4ec1-b164-37dd8941a3c1/bin/uautomizer-DrprNOufMa/data/7a34279fa/0bab41ee335f4461a6d404a6af0280bd/FLAG3ef2e6e24 [2021-12-07 00:33:05,157 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330fe6aa-db34-4ec1-b164-37dd8941a3c1/bin/uautomizer-DrprNOufMa/data/7a34279fa/0bab41ee335f4461a6d404a6af0280bd [2021-12-07 00:33:05,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:33:05,160 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:33:05,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:33:05,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:33:05,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:33:05,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:33:05" (1/1) ... [2021-12-07 00:33:05,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d77c4e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:33:05, skipping insertion in model container [2021-12-07 00:33:05,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:33:05" (1/1) ... [2021-12-07 00:33:05,169 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:33:05,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:33:05,311 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330fe6aa-db34-4ec1-b164-37dd8941a3c1/sv-benchmarks/c/weaver/test-easy10.wvr.c[3907,3920] [2021-12-07 00:33:05,315 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:33:05,323 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:33:05,350 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330fe6aa-db34-4ec1-b164-37dd8941a3c1/sv-benchmarks/c/weaver/test-easy10.wvr.c[3907,3920] [2021-12-07 00:33:05,351 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:33:05,363 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:33:05,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:33:05 WrapperNode [2021-12-07 00:33:05,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:33:05,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:33:05,364 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:33:05,364 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:33:05,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:33:05" (1/1) ... [2021-12-07 00:33:05,377 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:33:05" (1/1) ... [2021-12-07 00:33:05,404 INFO L137 Inliner]: procedures = 23, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 188 [2021-12-07 00:33:05,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:33:05,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:33:05,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:33:05,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:33:05,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:33:05" (1/1) ... [2021-12-07 00:33:05,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:33:05" (1/1) ... [2021-12-07 00:33:05,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:33:05" (1/1) ... [2021-12-07 00:33:05,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:33:05" (1/1) ... [2021-12-07 00:33:05,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:33:05" (1/1) ... [2021-12-07 00:33:05,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:33:05" (1/1) ... [2021-12-07 00:33:05,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:33:05" (1/1) ... [2021-12-07 00:33:05,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:33:05,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:33:05,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:33:05,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:33:05,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:33:05" (1/1) ... [2021-12-07 00:33:05,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:33:05,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330fe6aa-db34-4ec1-b164-37dd8941a3c1/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:33:05,457 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330fe6aa-db34-4ec1-b164-37dd8941a3c1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:33:05,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330fe6aa-db34-4ec1-b164-37dd8941a3c1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:33:05,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:33:05,491 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-07 00:33:05,491 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-07 00:33:05,491 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-07 00:33:05,491 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-07 00:33:05,491 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-07 00:33:05,491 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-07 00:33:05,491 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-12-07 00:33:05,491 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-12-07 00:33:05,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:33:05,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 00:33:05,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-07 00:33:05,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-07 00:33:05,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-07 00:33:05,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:33:05,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:33:05,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-07 00:33:05,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 00:33:05,493 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-07 00:33:05,555 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:33:05,556 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:33:05,742 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:33:05,778 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:33:05,778 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-07 00:33:05,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:33:05 BoogieIcfgContainer [2021-12-07 00:33:05,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:33:05,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:33:05,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:33:05,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:33:05,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:33:05" (1/3) ... [2021-12-07 00:33:05,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af13896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:33:05, skipping insertion in model container [2021-12-07 00:33:05,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:33:05" (2/3) ... [2021-12-07 00:33:05,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af13896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:33:05, skipping insertion in model container [2021-12-07 00:33:05,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:33:05" (3/3) ... [2021-12-07 00:33:05,786 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2021-12-07 00:33:05,790 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-07 00:33:05,790 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:33:05,790 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 00:33:05,790 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-07 00:33:05,816 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,816 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,817 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,817 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,817 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,817 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,817 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,817 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,819 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,819 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,819 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,819 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,820 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,820 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,820 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,820 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,820 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,821 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,821 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,821 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,821 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,821 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,822 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,822 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,822 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,822 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,822 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,822 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,825 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,825 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,825 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,825 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,826 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,826 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,826 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,827 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,827 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,827 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,828 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,828 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,828 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,828 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,829 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,829 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:33:05,832 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-12-07 00:33:05,868 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:33:05,874 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 00:33:05,874 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-12-07 00:33:05,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 138 transitions, 308 flow [2021-12-07 00:33:05,947 INFO L129 PetriNetUnfolder]: 2/134 cut-off events. [2021-12-07 00:33:05,947 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-12-07 00:33:05,950 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 134 events. 2/134 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2021-12-07 00:33:05,950 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 138 transitions, 308 flow [2021-12-07 00:33:05,962 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 121 transitions, 266 flow [2021-12-07 00:33:05,986 INFO L129 PetriNetUnfolder]: 2/120 cut-off events. [2021-12-07 00:33:05,986 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-12-07 00:33:05,986 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:33:05,987 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:05,987 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-07 00:33:05,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:05,991 INFO L85 PathProgramCache]: Analyzing trace with hash -936094455, now seen corresponding path program 1 times [2021-12-07 00:33:05,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:05,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959856651] [2021-12-07 00:33:05,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:05,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:06,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:33:06,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:06,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959856651] [2021-12-07 00:33:06,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959856651] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:33:06,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:33:06,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:33:06,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721977851] [2021-12-07 00:33:06,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:33:06,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:33:06,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:06,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:33:06,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:33:06,457 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2021-12-07 00:33:06,460 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 121 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:06,460 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:33:06,460 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2021-12-07 00:33:06,461 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:33:06,570 INFO L129 PetriNetUnfolder]: 67/361 cut-off events. [2021-12-07 00:33:06,570 INFO L130 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2021-12-07 00:33:06,573 INFO L84 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 361 events. 67/361 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1415 event pairs, 19 based on Foata normal form. 9/362 useless extension candidates. Maximal degree in co-relation 406. Up to 96 conditions per place. [2021-12-07 00:33:06,576 INFO L132 encePairwiseOnDemand]: 133/138 looper letters, 17 selfloop transitions, 2 changer transitions 2/124 dead transitions. [2021-12-07 00:33:06,577 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 124 transitions, 319 flow [2021-12-07 00:33:06,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:33:06,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-07 00:33:06,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2021-12-07 00:33:06,589 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9299516908212561 [2021-12-07 00:33:06,590 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2021-12-07 00:33:06,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2021-12-07 00:33:06,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:33:06,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2021-12-07 00:33:06,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:06,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:06,606 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:06,608 INFO L186 Difference]: Start difference. First operand has 132 places, 121 transitions, 266 flow. Second operand 3 states and 385 transitions. [2021-12-07 00:33:06,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 124 transitions, 319 flow [2021-12-07 00:33:06,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 124 transitions, 297 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-12-07 00:33:06,619 INFO L242 Difference]: Finished difference. Result has 127 places, 117 transitions, 250 flow [2021-12-07 00:33:06,621 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=127, PETRI_TRANSITIONS=117} [2021-12-07 00:33:06,624 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, -5 predicate places. [2021-12-07 00:33:06,624 INFO L470 AbstractCegarLoop]: Abstraction has has 127 places, 117 transitions, 250 flow [2021-12-07 00:33:06,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:06,625 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:33:06,625 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:06,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 00:33:06,626 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-07 00:33:06,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:06,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1596816327, now seen corresponding path program 2 times [2021-12-07 00:33:06,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:06,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032798246] [2021-12-07 00:33:06,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:06,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:06,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:33:06,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:06,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032798246] [2021-12-07 00:33:06,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032798246] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:33:06,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:33:06,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:33:06,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142221229] [2021-12-07 00:33:06,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:33:06,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:33:06,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:06,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:33:06,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:33:06,786 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2021-12-07 00:33:06,787 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 117 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:06,787 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:33:06,787 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2021-12-07 00:33:06,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:33:06,852 INFO L129 PetriNetUnfolder]: 51/323 cut-off events. [2021-12-07 00:33:06,852 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-12-07 00:33:06,854 INFO L84 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 323 events. 51/323 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1138 event pairs, 28 based on Foata normal form. 11/329 useless extension candidates. Maximal degree in co-relation 343. Up to 72 conditions per place. [2021-12-07 00:33:06,856 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 16 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2021-12-07 00:33:06,856 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 121 transitions, 296 flow [2021-12-07 00:33:06,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:33:06,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-07 00:33:06,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2021-12-07 00:33:06,858 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9227053140096618 [2021-12-07 00:33:06,858 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2021-12-07 00:33:06,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2021-12-07 00:33:06,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:33:06,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2021-12-07 00:33:06,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:06,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:06,864 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:06,864 INFO L186 Difference]: Start difference. First operand has 127 places, 117 transitions, 250 flow. Second operand 3 states and 382 transitions. [2021-12-07 00:33:06,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 121 transitions, 296 flow [2021-12-07 00:33:06,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 121 transitions, 292 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-07 00:33:06,868 INFO L242 Difference]: Finished difference. Result has 126 places, 117 transitions, 254 flow [2021-12-07 00:33:06,868 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=126, PETRI_TRANSITIONS=117} [2021-12-07 00:33:06,869 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, -6 predicate places. [2021-12-07 00:33:06,869 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 117 transitions, 254 flow [2021-12-07 00:33:06,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:06,870 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:33:06,870 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:06,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 00:33:06,870 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-07 00:33:06,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:06,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1354294515, now seen corresponding path program 3 times [2021-12-07 00:33:06,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:06,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096364443] [2021-12-07 00:33:06,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:06,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:07,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:33:07,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:07,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096364443] [2021-12-07 00:33:07,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096364443] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:33:07,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:33:07,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:33:07,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197135124] [2021-12-07 00:33:07,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:33:07,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:33:07,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:07,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:33:07,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:33:07,038 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2021-12-07 00:33:07,039 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 117 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:07,039 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:33:07,039 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2021-12-07 00:33:07,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:33:07,103 INFO L129 PetriNetUnfolder]: 48/326 cut-off events. [2021-12-07 00:33:07,103 INFO L130 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2021-12-07 00:33:07,104 INFO L84 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 326 events. 48/326 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1235 event pairs, 43 based on Foata normal form. 7/321 useless extension candidates. Maximal degree in co-relation 275. Up to 87 conditions per place. [2021-12-07 00:33:07,106 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 16 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2021-12-07 00:33:07,106 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 121 transitions, 304 flow [2021-12-07 00:33:07,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:33:07,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-07 00:33:07,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2021-12-07 00:33:07,108 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9227053140096618 [2021-12-07 00:33:07,108 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2021-12-07 00:33:07,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2021-12-07 00:33:07,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:33:07,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2021-12-07 00:33:07,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:07,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:07,113 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:07,113 INFO L186 Difference]: Start difference. First operand has 126 places, 117 transitions, 254 flow. Second operand 3 states and 382 transitions. [2021-12-07 00:33:07,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 121 transitions, 304 flow [2021-12-07 00:33:07,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 121 transitions, 300 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-07 00:33:07,118 INFO L242 Difference]: Finished difference. Result has 127 places, 117 transitions, 258 flow [2021-12-07 00:33:07,118 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=127, PETRI_TRANSITIONS=117} [2021-12-07 00:33:07,119 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, -5 predicate places. [2021-12-07 00:33:07,119 INFO L470 AbstractCegarLoop]: Abstraction has has 127 places, 117 transitions, 258 flow [2021-12-07 00:33:07,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:07,120 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:33:07,120 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:07,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 00:33:07,121 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-07 00:33:07,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:07,122 INFO L85 PathProgramCache]: Analyzing trace with hash -2054714783, now seen corresponding path program 4 times [2021-12-07 00:33:07,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:07,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750695415] [2021-12-07 00:33:07,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:07,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:08,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:33:08,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:08,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750695415] [2021-12-07 00:33:08,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750695415] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:33:08,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:33:08,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-07 00:33:08,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91411628] [2021-12-07 00:33:08,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:33:08,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-07 00:33:08,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:08,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-07 00:33:08,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:33:08,316 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2021-12-07 00:33:08,319 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 117 transitions, 258 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:08,319 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:33:08,319 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2021-12-07 00:33:08,319 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:33:10,859 INFO L129 PetriNetUnfolder]: 4954/9843 cut-off events. [2021-12-07 00:33:10,859 INFO L130 PetriNetUnfolder]: For 1818/1818 co-relation queries the response was YES. [2021-12-07 00:33:10,885 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19099 conditions, 9843 events. 4954/9843 cut-off events. For 1818/1818 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 78364 event pairs, 1290 based on Foata normal form. 1/9735 useless extension candidates. Maximal degree in co-relation 7573. Up to 2338 conditions per place. [2021-12-07 00:33:10,939 INFO L132 encePairwiseOnDemand]: 119/138 looper letters, 180 selfloop transitions, 17 changer transitions 13/279 dead transitions. [2021-12-07 00:33:10,939 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 279 transitions, 1082 flow [2021-12-07 00:33:10,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 00:33:10,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-07 00:33:10,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1571 transitions. [2021-12-07 00:33:10,944 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7115036231884058 [2021-12-07 00:33:10,945 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1571 transitions. [2021-12-07 00:33:10,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1571 transitions. [2021-12-07 00:33:10,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:33:10,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1571 transitions. [2021-12-07 00:33:10,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 98.1875) internal successors, (1571), 16 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:10,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:10,956 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:10,956 INFO L186 Difference]: Start difference. First operand has 127 places, 117 transitions, 258 flow. Second operand 16 states and 1571 transitions. [2021-12-07 00:33:10,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 279 transitions, 1082 flow [2021-12-07 00:33:10,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 279 transitions, 1078 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-07 00:33:10,964 INFO L242 Difference]: Finished difference. Result has 154 places, 130 transitions, 381 flow [2021-12-07 00:33:10,964 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=381, PETRI_PLACES=154, PETRI_TRANSITIONS=130} [2021-12-07 00:33:10,965 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 22 predicate places. [2021-12-07 00:33:10,965 INFO L470 AbstractCegarLoop]: Abstraction has has 154 places, 130 transitions, 381 flow [2021-12-07 00:33:10,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:10,966 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:33:10,966 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:10,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 00:33:10,966 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-07 00:33:10,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:10,967 INFO L85 PathProgramCache]: Analyzing trace with hash 651551893, now seen corresponding path program 5 times [2021-12-07 00:33:10,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:10,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297949554] [2021-12-07 00:33:10,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:10,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:11,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:33:11,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:11,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297949554] [2021-12-07 00:33:11,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297949554] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:33:11,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:33:11,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:33:11,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947903824] [2021-12-07 00:33:11,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:33:11,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:33:11,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:11,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:33:11,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:33:11,058 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2021-12-07 00:33:11,058 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 130 transitions, 381 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:11,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:33:11,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2021-12-07 00:33:11,059 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:33:11,215 INFO L129 PetriNetUnfolder]: 226/1236 cut-off events. [2021-12-07 00:33:11,215 INFO L130 PetriNetUnfolder]: For 416/445 co-relation queries the response was YES. [2021-12-07 00:33:11,220 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2327 conditions, 1236 events. 226/1236 cut-off events. For 416/445 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9595 event pairs, 58 based on Foata normal form. 27/1220 useless extension candidates. Maximal degree in co-relation 2279. Up to 414 conditions per place. [2021-12-07 00:33:11,225 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 17 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2021-12-07 00:33:11,225 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 134 transitions, 430 flow [2021-12-07 00:33:11,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:33:11,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-07 00:33:11,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2021-12-07 00:33:11,226 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9251207729468599 [2021-12-07 00:33:11,226 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2021-12-07 00:33:11,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2021-12-07 00:33:11,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:33:11,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2021-12-07 00:33:11,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:11,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:11,229 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:11,229 INFO L186 Difference]: Start difference. First operand has 154 places, 130 transitions, 381 flow. Second operand 3 states and 383 transitions. [2021-12-07 00:33:11,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 134 transitions, 430 flow [2021-12-07 00:33:11,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 134 transitions, 417 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-12-07 00:33:11,234 INFO L242 Difference]: Finished difference. Result has 148 places, 129 transitions, 370 flow [2021-12-07 00:33:11,235 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=370, PETRI_PLACES=148, PETRI_TRANSITIONS=129} [2021-12-07 00:33:11,235 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 16 predicate places. [2021-12-07 00:33:11,235 INFO L470 AbstractCegarLoop]: Abstraction has has 148 places, 129 transitions, 370 flow [2021-12-07 00:33:11,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:11,236 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:33:11,236 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:11,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-07 00:33:11,236 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-07 00:33:11,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:11,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1242365405, now seen corresponding path program 6 times [2021-12-07 00:33:11,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:11,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857831743] [2021-12-07 00:33:11,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:11,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:11,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:12,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:33:12,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:12,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857831743] [2021-12-07 00:33:12,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857831743] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:33:12,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:33:12,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-07 00:33:12,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192601128] [2021-12-07 00:33:12,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:33:12,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-07 00:33:12,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:12,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-07 00:33:12,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:33:12,087 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2021-12-07 00:33:12,088 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 129 transitions, 370 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:12,089 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:33:12,089 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2021-12-07 00:33:12,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:33:15,028 INFO L129 PetriNetUnfolder]: 6674/14826 cut-off events. [2021-12-07 00:33:15,029 INFO L130 PetriNetUnfolder]: For 11335/11335 co-relation queries the response was YES. [2021-12-07 00:33:15,079 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36969 conditions, 14826 events. 6674/14826 cut-off events. For 11335/11335 co-relation queries the response was YES. Maximal size of possible extension queue 872. Compared 140726 event pairs, 2641 based on Foata normal form. 1/14687 useless extension candidates. Maximal degree in co-relation 26802. Up to 3174 conditions per place. [2021-12-07 00:33:15,149 INFO L132 encePairwiseOnDemand]: 121/138 looper letters, 201 selfloop transitions, 27 changer transitions 13/310 dead transitions. [2021-12-07 00:33:15,149 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 310 transitions, 1555 flow [2021-12-07 00:33:15,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 00:33:15,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-07 00:33:15,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1566 transitions. [2021-12-07 00:33:15,154 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7092391304347826 [2021-12-07 00:33:15,155 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1566 transitions. [2021-12-07 00:33:15,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1566 transitions. [2021-12-07 00:33:15,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:33:15,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1566 transitions. [2021-12-07 00:33:15,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 97.875) internal successors, (1566), 16 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:15,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:15,165 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:15,165 INFO L186 Difference]: Start difference. First operand has 148 places, 129 transitions, 370 flow. Second operand 16 states and 1566 transitions. [2021-12-07 00:33:15,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 310 transitions, 1555 flow [2021-12-07 00:33:15,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 310 transitions, 1551 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-07 00:33:15,239 INFO L242 Difference]: Finished difference. Result has 175 places, 152 transitions, 647 flow [2021-12-07 00:33:15,239 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=647, PETRI_PLACES=175, PETRI_TRANSITIONS=152} [2021-12-07 00:33:15,240 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 43 predicate places. [2021-12-07 00:33:15,240 INFO L470 AbstractCegarLoop]: Abstraction has has 175 places, 152 transitions, 647 flow [2021-12-07 00:33:15,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:15,241 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:33:15,241 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:15,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 00:33:15,241 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-07 00:33:15,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:15,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1131171131, now seen corresponding path program 7 times [2021-12-07 00:33:15,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:15,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943174166] [2021-12-07 00:33:15,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:15,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:16,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:33:16,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:16,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943174166] [2021-12-07 00:33:16,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943174166] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:33:16,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:33:16,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-07 00:33:16,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484679962] [2021-12-07 00:33:16,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:33:16,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-07 00:33:16,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:16,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-07 00:33:16,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:33:16,116 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2021-12-07 00:33:16,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 152 transitions, 647 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:16,117 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:33:16,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2021-12-07 00:33:16,117 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:33:20,894 INFO L129 PetriNetUnfolder]: 12734/31039 cut-off events. [2021-12-07 00:33:20,894 INFO L130 PetriNetUnfolder]: For 61063/61063 co-relation queries the response was YES. [2021-12-07 00:33:21,058 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90108 conditions, 31039 events. 12734/31039 cut-off events. For 61063/61063 co-relation queries the response was YES. Maximal size of possible extension queue 1766. Compared 356559 event pairs, 3437 based on Foata normal form. 1/30801 useless extension candidates. Maximal degree in co-relation 89632. Up to 5840 conditions per place. [2021-12-07 00:33:21,175 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 298 selfloop transitions, 36 changer transitions 8/411 dead transitions. [2021-12-07 00:33:21,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 411 transitions, 2852 flow [2021-12-07 00:33:21,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 00:33:21,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-07 00:33:21,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1598 transitions. [2021-12-07 00:33:21,180 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7237318840579711 [2021-12-07 00:33:21,180 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1598 transitions. [2021-12-07 00:33:21,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1598 transitions. [2021-12-07 00:33:21,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:33:21,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1598 transitions. [2021-12-07 00:33:21,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.875) internal successors, (1598), 16 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:21,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:21,189 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:21,189 INFO L186 Difference]: Start difference. First operand has 175 places, 152 transitions, 647 flow. Second operand 16 states and 1598 transitions. [2021-12-07 00:33:21,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 411 transitions, 2852 flow [2021-12-07 00:33:22,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 411 transitions, 2758 flow, removed 45 selfloop flow, removed 5 redundant places. [2021-12-07 00:33:22,039 INFO L242 Difference]: Finished difference. Result has 195 places, 177 transitions, 1028 flow [2021-12-07 00:33:22,040 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1028, PETRI_PLACES=195, PETRI_TRANSITIONS=177} [2021-12-07 00:33:22,040 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 63 predicate places. [2021-12-07 00:33:22,040 INFO L470 AbstractCegarLoop]: Abstraction has has 195 places, 177 transitions, 1028 flow [2021-12-07 00:33:22,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:22,041 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:33:22,041 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:22,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-07 00:33:22,041 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-07 00:33:22,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:22,042 INFO L85 PathProgramCache]: Analyzing trace with hash -343566183, now seen corresponding path program 8 times [2021-12-07 00:33:22,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:22,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405866843] [2021-12-07 00:33:22,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:22,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:22,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:33:22,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:22,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405866843] [2021-12-07 00:33:22,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405866843] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:33:22,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:33:22,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-07 00:33:22,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515523955] [2021-12-07 00:33:22,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:33:22,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-07 00:33:22,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:22,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-07 00:33:22,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:33:22,784 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2021-12-07 00:33:22,785 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 177 transitions, 1028 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:22,785 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:33:22,785 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2021-12-07 00:33:22,785 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:33:29,866 INFO L129 PetriNetUnfolder]: 17331/45503 cut-off events. [2021-12-07 00:33:29,866 INFO L130 PetriNetUnfolder]: For 154013/154013 co-relation queries the response was YES. [2021-12-07 00:33:30,204 INFO L84 FinitePrefix]: Finished finitePrefix Result has 146507 conditions, 45503 events. 17331/45503 cut-off events. For 154013/154013 co-relation queries the response was YES. Maximal size of possible extension queue 2891. Compared 585219 event pairs, 5038 based on Foata normal form. 1/44990 useless extension candidates. Maximal degree in co-relation 145636. Up to 10239 conditions per place. [2021-12-07 00:33:30,381 INFO L132 encePairwiseOnDemand]: 121/138 looper letters, 296 selfloop transitions, 47 changer transitions 8/420 dead transitions. [2021-12-07 00:33:30,381 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 420 transitions, 3353 flow [2021-12-07 00:33:30,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 00:33:30,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-07 00:33:30,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1597 transitions. [2021-12-07 00:33:30,386 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7232789855072463 [2021-12-07 00:33:30,386 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1597 transitions. [2021-12-07 00:33:30,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1597 transitions. [2021-12-07 00:33:30,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:33:30,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1597 transitions. [2021-12-07 00:33:30,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.8125) internal successors, (1597), 16 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:30,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:30,394 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:30,394 INFO L186 Difference]: Start difference. First operand has 195 places, 177 transitions, 1028 flow. Second operand 16 states and 1597 transitions. [2021-12-07 00:33:30,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 420 transitions, 3353 flow [2021-12-07 00:33:32,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 420 transitions, 3256 flow, removed 45 selfloop flow, removed 4 redundant places. [2021-12-07 00:33:32,608 INFO L242 Difference]: Finished difference. Result has 217 places, 206 transitions, 1544 flow [2021-12-07 00:33:32,609 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=990, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1544, PETRI_PLACES=217, PETRI_TRANSITIONS=206} [2021-12-07 00:33:32,609 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 85 predicate places. [2021-12-07 00:33:32,610 INFO L470 AbstractCegarLoop]: Abstraction has has 217 places, 206 transitions, 1544 flow [2021-12-07 00:33:32,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:32,610 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:33:32,611 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:32,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-07 00:33:32,611 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-07 00:33:32,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:32,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1442699581, now seen corresponding path program 9 times [2021-12-07 00:33:32,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:32,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610614401] [2021-12-07 00:33:32,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:32,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:33,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:33:33,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:33,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610614401] [2021-12-07 00:33:33,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610614401] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:33:33,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:33:33,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-07 00:33:33,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460077813] [2021-12-07 00:33:33,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:33:33,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-07 00:33:33,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:33,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-07 00:33:33,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:33:33,322 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2021-12-07 00:33:33,323 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 206 transitions, 1544 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:33,323 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:33:33,323 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2021-12-07 00:33:33,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:33:45,176 INFO L129 PetriNetUnfolder]: 25412/73374 cut-off events. [2021-12-07 00:33:45,176 INFO L130 PetriNetUnfolder]: For 379529/379537 co-relation queries the response was YES. [2021-12-07 00:33:45,809 INFO L84 FinitePrefix]: Finished finitePrefix Result has 261490 conditions, 73374 events. 25412/73374 cut-off events. For 379529/379537 co-relation queries the response was YES. Maximal size of possible extension queue 5092. Compared 1059841 event pairs, 6945 based on Foata normal form. 3/72592 useless extension candidates. Maximal degree in co-relation 258798. Up to 15776 conditions per place. [2021-12-07 00:33:46,050 INFO L132 encePairwiseOnDemand]: 119/138 looper letters, 451 selfloop transitions, 77 changer transitions 8/605 dead transitions. [2021-12-07 00:33:46,050 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 605 transitions, 6572 flow [2021-12-07 00:33:46,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 00:33:46,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-07 00:33:46,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1593 transitions. [2021-12-07 00:33:46,054 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7214673913043478 [2021-12-07 00:33:46,054 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1593 transitions. [2021-12-07 00:33:46,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1593 transitions. [2021-12-07 00:33:46,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:33:46,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1593 transitions. [2021-12-07 00:33:46,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.5625) internal successors, (1593), 16 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:46,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:46,062 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:46,062 INFO L186 Difference]: Start difference. First operand has 217 places, 206 transitions, 1544 flow. Second operand 16 states and 1593 transitions. [2021-12-07 00:33:46,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 605 transitions, 6572 flow [2021-12-07 00:33:53,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 605 transitions, 6224 flow, removed 169 selfloop flow, removed 4 redundant places. [2021-12-07 00:33:53,424 INFO L242 Difference]: Finished difference. Result has 239 places, 258 transitions, 2461 flow [2021-12-07 00:33:53,424 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=1450, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2461, PETRI_PLACES=239, PETRI_TRANSITIONS=258} [2021-12-07 00:33:53,425 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 107 predicate places. [2021-12-07 00:33:53,425 INFO L470 AbstractCegarLoop]: Abstraction has has 239 places, 258 transitions, 2461 flow [2021-12-07 00:33:53,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:53,426 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:33:53,426 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:53,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-07 00:33:53,426 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-07 00:33:53,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:53,427 INFO L85 PathProgramCache]: Analyzing trace with hash -211585563, now seen corresponding path program 10 times [2021-12-07 00:33:53,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:53,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899023058] [2021-12-07 00:33:53,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:53,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:54,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:33:54,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:54,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899023058] [2021-12-07 00:33:54,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899023058] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:33:54,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:33:54,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-07 00:33:54,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656365692] [2021-12-07 00:33:54,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:33:54,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-07 00:33:54,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:54,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-07 00:33:54,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:33:54,091 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2021-12-07 00:33:54,092 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 258 transitions, 2461 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:54,092 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:33:54,092 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2021-12-07 00:33:54,092 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:34:12,281 INFO L129 PetriNetUnfolder]: 31820/104308 cut-off events. [2021-12-07 00:34:12,281 INFO L130 PetriNetUnfolder]: For 707080/707080 co-relation queries the response was YES. [2021-12-07 00:34:13,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 395560 conditions, 104308 events. 31820/104308 cut-off events. For 707080/707080 co-relation queries the response was YES. Maximal size of possible extension queue 7719. Compared 1673345 event pairs, 10407 based on Foata normal form. 1/103263 useless extension candidates. Maximal degree in co-relation 389842. Up to 16749 conditions per place. [2021-12-07 00:34:13,699 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 560 selfloop transitions, 133 changer transitions 10/772 dead transitions. [2021-12-07 00:34:13,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 772 transitions, 9766 flow [2021-12-07 00:34:13,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 00:34:13,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-07 00:34:13,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1581 transitions. [2021-12-07 00:34:13,704 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7160326086956522 [2021-12-07 00:34:13,704 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1581 transitions. [2021-12-07 00:34:13,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1581 transitions. [2021-12-07 00:34:13,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:34:13,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1581 transitions. [2021-12-07 00:34:13,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 98.8125) internal successors, (1581), 16 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:34:13,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:34:13,712 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:34:13,712 INFO L186 Difference]: Start difference. First operand has 239 places, 258 transitions, 2461 flow. Second operand 16 states and 1581 transitions. [2021-12-07 00:34:13,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 772 transitions, 9766 flow [2021-12-07 00:34:33,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 772 transitions, 9598 flow, removed 69 selfloop flow, removed 4 redundant places. [2021-12-07 00:34:33,683 INFO L242 Difference]: Finished difference. Result has 261 places, 346 transitions, 4376 flow [2021-12-07 00:34:33,684 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=2408, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4376, PETRI_PLACES=261, PETRI_TRANSITIONS=346} [2021-12-07 00:34:33,684 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 129 predicate places. [2021-12-07 00:34:33,684 INFO L470 AbstractCegarLoop]: Abstraction has has 261 places, 346 transitions, 4376 flow [2021-12-07 00:34:33,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:34:33,685 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:34:33,685 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:34:33,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-07 00:34:33,685 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-07 00:34:33,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:34:33,686 INFO L85 PathProgramCache]: Analyzing trace with hash 2036413413, now seen corresponding path program 11 times [2021-12-07 00:34:33,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:34:33,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286029658] [2021-12-07 00:34:33,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:34:33,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:34:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:34,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:34:34,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:34:34,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286029658] [2021-12-07 00:34:34,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286029658] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:34:34,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:34:34,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-07 00:34:34,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753210415] [2021-12-07 00:34:34,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:34:34,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-07 00:34:34,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:34:34,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-07 00:34:34,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:34:34,420 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2021-12-07 00:34:34,421 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 346 transitions, 4376 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:34:34,421 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:34:34,421 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2021-12-07 00:34:34,421 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:35:08,576 INFO L129 PetriNetUnfolder]: 46058/168749 cut-off events. [2021-12-07 00:35:08,576 INFO L130 PetriNetUnfolder]: For 1418987/1418987 co-relation queries the response was YES. [2021-12-07 00:35:10,717 INFO L84 FinitePrefix]: Finished finitePrefix Result has 646565 conditions, 168749 events. 46058/168749 cut-off events. For 1418987/1418987 co-relation queries the response was YES. Maximal size of possible extension queue 12364. Compared 2991573 event pairs, 13827 based on Foata normal form. 1/166187 useless extension candidates. Maximal degree in co-relation 636616. Up to 31131 conditions per place. [2021-12-07 00:35:11,256 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 639 selfloop transitions, 128 changer transitions 9/845 dead transitions. [2021-12-07 00:35:11,256 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 845 transitions, 13022 flow [2021-12-07 00:35:11,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 00:35:11,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-07 00:35:11,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1584 transitions. [2021-12-07 00:35:11,258 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.717391304347826 [2021-12-07 00:35:11,258 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1584 transitions. [2021-12-07 00:35:11,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1584 transitions. [2021-12-07 00:35:11,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:35:11,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1584 transitions. [2021-12-07 00:35:11,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:11,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:11,265 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:11,265 INFO L186 Difference]: Start difference. First operand has 261 places, 346 transitions, 4376 flow. Second operand 16 states and 1584 transitions. [2021-12-07 00:35:11,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 845 transitions, 13022 flow [2021-12-07 00:35:51,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 845 transitions, 12769 flow, removed 114 selfloop flow, removed 5 redundant places. [2021-12-07 00:35:51,396 INFO L242 Difference]: Finished difference. Result has 282 places, 433 transitions, 6486 flow [2021-12-07 00:35:51,397 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=4297, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6486, PETRI_PLACES=282, PETRI_TRANSITIONS=433} [2021-12-07 00:35:51,397 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 150 predicate places. [2021-12-07 00:35:51,397 INFO L470 AbstractCegarLoop]: Abstraction has has 282 places, 433 transitions, 6486 flow [2021-12-07 00:35:51,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:51,398 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:35:51,398 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:51,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-07 00:35:51,398 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-07 00:35:51,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:51,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1824634105, now seen corresponding path program 12 times [2021-12-07 00:35:51,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:51,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185455336] [2021-12-07 00:35:51,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:51,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:52,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:35:52,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:52,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185455336] [2021-12-07 00:35:52,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185455336] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:52,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:52,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-07 00:35:52,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68137313] [2021-12-07 00:35:52,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:52,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-07 00:35:52,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:52,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-07 00:35:52,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:35:52,005 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2021-12-07 00:35:52,006 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 433 transitions, 6486 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:52,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:35:52,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2021-12-07 00:35:52,006 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:36:40,486 INFO L129 PetriNetUnfolder]: 53560/214011 cut-off events. [2021-12-07 00:36:40,487 INFO L130 PetriNetUnfolder]: For 2033424/2033424 co-relation queries the response was YES. [2021-12-07 00:36:43,620 INFO L84 FinitePrefix]: Finished finitePrefix Result has 843329 conditions, 214011 events. 53560/214011 cut-off events. For 2033424/2033424 co-relation queries the response was YES. Maximal size of possible extension queue 16695. Compared 4040459 event pairs, 22689 based on Foata normal form. 1/211524 useless extension candidates. Maximal degree in co-relation 837423. Up to 49385 conditions per place. [2021-12-07 00:36:44,296 INFO L132 encePairwiseOnDemand]: 121/138 looper letters, 784 selfloop transitions, 175 changer transitions 9/1037 dead transitions. [2021-12-07 00:36:44,296 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 1037 transitions, 17353 flow [2021-12-07 00:36:44,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 00:36:44,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-07 00:36:44,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1580 transitions. [2021-12-07 00:36:44,299 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7155797101449275 [2021-12-07 00:36:44,299 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1580 transitions. [2021-12-07 00:36:44,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1580 transitions. [2021-12-07 00:36:44,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:36:44,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1580 transitions. [2021-12-07 00:36:44,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 98.75) internal successors, (1580), 16 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:36:44,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:36:44,304 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:36:44,304 INFO L186 Difference]: Start difference. First operand has 282 places, 433 transitions, 6486 flow. Second operand 16 states and 1580 transitions. [2021-12-07 00:36:44,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 1037 transitions, 17353 flow [2021-12-07 00:37:57,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 1037 transitions, 16892 flow, removed 213 selfloop flow, removed 5 redundant places. [2021-12-07 00:37:57,695 INFO L242 Difference]: Finished difference. Result has 303 places, 553 transitions, 9375 flow [2021-12-07 00:37:57,696 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=6300, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=9375, PETRI_PLACES=303, PETRI_TRANSITIONS=553} [2021-12-07 00:37:57,696 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 171 predicate places. [2021-12-07 00:37:57,696 INFO L470 AbstractCegarLoop]: Abstraction has has 303 places, 553 transitions, 9375 flow [2021-12-07 00:37:57,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:37:57,697 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:37:57,697 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:37:57,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-07 00:37:57,697 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-07 00:37:57,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:37:57,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1409672555, now seen corresponding path program 13 times [2021-12-07 00:37:57,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:37:57,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086786906] [2021-12-07 00:37:57,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:37:57,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:37:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:58,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:37:58,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:37:58,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086786906] [2021-12-07 00:37:58,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086786906] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:37:58,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:37:58,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-07 00:37:58,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349047142] [2021-12-07 00:37:58,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:37:58,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-07 00:37:58,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:37:58,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-07 00:37:58,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:37:58,373 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2021-12-07 00:37:58,373 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 553 transitions, 9375 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:37:58,373 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:37:58,373 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2021-12-07 00:37:58,373 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:39:02,519 INFO L129 PetriNetUnfolder]: 58415/245354 cut-off events. [2021-12-07 00:39:02,519 INFO L130 PetriNetUnfolder]: For 2653108/2653108 co-relation queries the response was YES. [2021-12-07 00:39:06,590 INFO L84 FinitePrefix]: Finished finitePrefix Result has 991322 conditions, 245354 events. 58415/245354 cut-off events. For 2653108/2653108 co-relation queries the response was YES. Maximal size of possible extension queue 18517. Compared 4770105 event pairs, 21772 based on Foata normal form. 1/240917 useless extension candidates. Maximal degree in co-relation 982565. Up to 53115 conditions per place. [2021-12-07 00:39:07,381 INFO L132 encePairwiseOnDemand]: 121/138 looper letters, 864 selfloop transitions, 208 changer transitions 9/1150 dead transitions. [2021-12-07 00:39:07,382 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 1150 transitions, 21849 flow [2021-12-07 00:39:07,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 00:39:07,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-07 00:39:07,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1590 transitions. [2021-12-07 00:39:07,384 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.720108695652174 [2021-12-07 00:39:07,384 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1590 transitions. [2021-12-07 00:39:07,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1590 transitions. [2021-12-07 00:39:07,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:39:07,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1590 transitions. [2021-12-07 00:39:07,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.375) internal successors, (1590), 16 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:39:07,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:39:07,389 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:39:07,389 INFO L186 Difference]: Start difference. First operand has 303 places, 553 transitions, 9375 flow. Second operand 16 states and 1590 transitions. [2021-12-07 00:39:07,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 1150 transitions, 21849 flow [2021-12-07 00:40:17,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 1150 transitions, 21390 flow, removed 216 selfloop flow, removed 4 redundant places. [2021-12-07 00:40:17,995 INFO L242 Difference]: Finished difference. Result has 325 places, 664 transitions, 12221 flow [2021-12-07 00:40:17,996 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=9144, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=12221, PETRI_PLACES=325, PETRI_TRANSITIONS=664} [2021-12-07 00:40:17,996 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 193 predicate places. [2021-12-07 00:40:17,996 INFO L470 AbstractCegarLoop]: Abstraction has has 325 places, 664 transitions, 12221 flow [2021-12-07 00:40:17,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:40:17,997 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:40:17,997 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:40:17,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-07 00:40:17,997 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-07 00:40:17,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:40:17,997 INFO L85 PathProgramCache]: Analyzing trace with hash -511420619, now seen corresponding path program 14 times [2021-12-07 00:40:17,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:40:17,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128596485] [2021-12-07 00:40:17,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:40:17,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:40:18,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:18,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:40:18,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:40:18,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128596485] [2021-12-07 00:40:18,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128596485] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:40:18,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:40:18,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-07 00:40:18,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460785862] [2021-12-07 00:40:18,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:40:18,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-07 00:40:18,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:40:18,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-07 00:40:18,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:40:18,592 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2021-12-07 00:40:18,593 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 664 transitions, 12221 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:40:18,593 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:40:18,593 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2021-12-07 00:40:18,593 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:41:31,448 INFO L129 PetriNetUnfolder]: 58969/247581 cut-off events. [2021-12-07 00:41:31,449 INFO L130 PetriNetUnfolder]: For 3039369/3039369 co-relation queries the response was YES. [2021-12-07 00:41:35,882 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1043357 conditions, 247581 events. 58969/247581 cut-off events. For 3039369/3039369 co-relation queries the response was YES. Maximal size of possible extension queue 18599. Compared 4822830 event pairs, 24614 based on Foata normal form. 1/242270 useless extension candidates. Maximal degree in co-relation 1035335. Up to 63789 conditions per place. [2021-12-07 00:41:36,777 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 935 selfloop transitions, 221 changer transitions 13/1238 dead transitions. [2021-12-07 00:41:36,777 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 1238 transitions, 25348 flow [2021-12-07 00:41:36,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 00:41:36,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-07 00:41:36,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1579 transitions. [2021-12-07 00:41:36,779 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7151268115942029 [2021-12-07 00:41:36,779 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1579 transitions. [2021-12-07 00:41:36,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1579 transitions. [2021-12-07 00:41:36,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:41:36,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1579 transitions. [2021-12-07 00:41:36,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 98.6875) internal successors, (1579), 16 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:36,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:36,783 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:36,783 INFO L186 Difference]: Start difference. First operand has 325 places, 664 transitions, 12221 flow. Second operand 16 states and 1579 transitions. [2021-12-07 00:41:36,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 1238 transitions, 25348 flow [2021-12-07 00:43:14,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 1238 transitions, 25073 flow, removed 137 selfloop flow, removed 4 redundant places. [2021-12-07 00:43:14,840 INFO L242 Difference]: Finished difference. Result has 346 places, 732 transitions, 14613 flow [2021-12-07 00:43:14,840 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=12056, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=14613, PETRI_PLACES=346, PETRI_TRANSITIONS=732} [2021-12-07 00:43:14,841 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 214 predicate places. [2021-12-07 00:43:14,841 INFO L470 AbstractCegarLoop]: Abstraction has has 346 places, 732 transitions, 14613 flow [2021-12-07 00:43:14,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:43:14,841 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:43:14,841 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:43:14,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-07 00:43:14,841 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-07 00:43:14,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:43:14,842 INFO L85 PathProgramCache]: Analyzing trace with hash 734611909, now seen corresponding path program 15 times [2021-12-07 00:43:14,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:43:14,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900393830] [2021-12-07 00:43:14,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:43:14,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:43:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:15,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:43:15,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:43:15,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900393830] [2021-12-07 00:43:15,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900393830] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:43:15,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:43:15,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-07 00:43:15,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123695609] [2021-12-07 00:43:15,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:43:15,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-07 00:43:15,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:43:15,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-07 00:43:15,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:43:15,441 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2021-12-07 00:43:15,441 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 732 transitions, 14613 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:43:15,441 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:43:15,441 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2021-12-07 00:43:15,441 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand