./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483de3f9-82a6-452c-8e5b-1f21d0a43c75/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483de3f9-82a6-452c-8e5b-1f21d0a43c75/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483de3f9-82a6-452c-8e5b-1f21d0a43c75/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483de3f9-82a6-452c-8e5b-1f21d0a43c75/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483de3f9-82a6-452c-8e5b-1f21d0a43c75/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483de3f9-82a6-452c-8e5b-1f21d0a43c75/bin/uautomizer-GMMbpWq8iD --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 c361ebc03d879240d418527d643e8a7b3c7ac084ceb3e66857b21a687a1c7f90 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:24:51,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:24:51,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:24:51,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:24:51,970 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:24:51,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:24:51,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:24:51,976 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:24:51,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:24:51,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:24:51,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:24:51,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:24:51,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:24:51,985 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:24:51,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:24:51,989 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:24:51,990 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:24:51,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:24:51,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:24:51,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:24:51,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:24:52,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:24:52,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:24:52,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:24:52,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:24:52,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:24:52,016 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:24:52,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:24:52,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:24:52,020 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:24:52,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:24:52,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:24:52,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:24:52,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:24:52,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:24:52,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:24:52,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:24:52,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:24:52,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:24:52,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:24:52,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:24:52,034 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483de3f9-82a6-452c-8e5b-1f21d0a43c75/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:24:52,078 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:24:52,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:24:52,082 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:24:52,082 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:24:52,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:24:52,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:24:52,087 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:24:52,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:24:52,088 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:24:52,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:24:52,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:24:52,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:24:52,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:24:52,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:24:52,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:24:52,091 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:24:52,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:24:52,091 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:24:52,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:24:52,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:24:52,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:24:52,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:24:52,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:24:52,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:24:52,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:24:52,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:24:52,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:24:52,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:24:52,094 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:24:52,094 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:24:52,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:24:52,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:24:52,095 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_483de3f9-82a6-452c-8e5b-1f21d0a43c75/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483de3f9-82a6-452c-8e5b-1f21d0a43c75/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c361ebc03d879240d418527d643e8a7b3c7ac084ceb3e66857b21a687a1c7f90 [2021-10-28 23:24:52,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:24:52,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:24:52,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:24:52,431 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:24:52,432 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:24:52,433 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483de3f9-82a6-452c-8e5b-1f21d0a43c75/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c [2021-10-28 23:24:52,507 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483de3f9-82a6-452c-8e5b-1f21d0a43c75/bin/uautomizer-GMMbpWq8iD/data/9f61f0e83/c7ec7754f22a469a911de6a2750c1701/FLAG3d106b451 [2021-10-28 23:24:53,084 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:24:53,087 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483de3f9-82a6-452c-8e5b-1f21d0a43c75/sv-benchmarks/c/weaver/chl-sre-symm.wvr.c [2021-10-28 23:24:53,098 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483de3f9-82a6-452c-8e5b-1f21d0a43c75/bin/uautomizer-GMMbpWq8iD/data/9f61f0e83/c7ec7754f22a469a911de6a2750c1701/FLAG3d106b451 [2021-10-28 23:24:53,417 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483de3f9-82a6-452c-8e5b-1f21d0a43c75/bin/uautomizer-GMMbpWq8iD/data/9f61f0e83/c7ec7754f22a469a911de6a2750c1701 [2021-10-28 23:24:53,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:24:53,425 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:24:53,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:24:53,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:24:53,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:24:53,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:24:53" (1/1) ... [2021-10-28 23:24:53,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bec3325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:24:53, skipping insertion in model container [2021-10-28 23:24:53,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:24:53" (1/1) ... [2021-10-28 23:24:53,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:24:53,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:24:53,753 WARN L228 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_483de3f9-82a6-452c-8e5b-1f21d0a43c75/sv-benchmarks/c/weaver/chl-sre-symm.wvr.c[2133,2146] [2021-10-28 23:24:53,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:24:53,773 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:24:53,812 WARN L228 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_483de3f9-82a6-452c-8e5b-1f21d0a43c75/sv-benchmarks/c/weaver/chl-sre-symm.wvr.c[2133,2146] [2021-10-28 23:24:53,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:24:53,834 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:24:53,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:24:53 WrapperNode [2021-10-28 23:24:53,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:24:53,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:24:53,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:24:53,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:24:53,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:24:53" (1/1) ... [2021-10-28 23:24:53,854 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:24:53" (1/1) ... [2021-10-28 23:24:53,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:24:53,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:24:53,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:24:53,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:24:53,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:24:53" (1/1) ... [2021-10-28 23:24:53,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:24:53" (1/1) ... [2021-10-28 23:24:53,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:24:53" (1/1) ... [2021-10-28 23:24:53,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:24:53" (1/1) ... [2021-10-28 23:24:53,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:24:53" (1/1) ... [2021-10-28 23:24:53,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:24:53" (1/1) ... [2021-10-28 23:24:53,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:24:53" (1/1) ... [2021-10-28 23:24:53,939 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:24:53,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:24:53,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:24:53,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:24:53,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:24:53" (1/1) ... [2021-10-28 23:24:53,951 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:24:53,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483de3f9-82a6-452c-8e5b-1f21d0a43c75/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:24:53,978 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483de3f9-82a6-452c-8e5b-1f21d0a43c75/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:24:54,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483de3f9-82a6-452c-8e5b-1f21d0a43c75/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:24:54,042 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-28 23:24:54,042 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-28 23:24:54,042 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-28 23:24:54,043 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-28 23:24:54,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:24:54,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:24:54,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:24:54,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:24:54,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:24:54,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:24:54,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:24:54,047 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 23:24:54,467 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:24:54,467 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-28 23:24:54,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:24:54 BoogieIcfgContainer [2021-10-28 23:24:54,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:24:54,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:24:54,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:24:54,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:24:54,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:24:53" (1/3) ... [2021-10-28 23:24:54,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f99167a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:24:54, skipping insertion in model container [2021-10-28 23:24:54,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:24:53" (2/3) ... [2021-10-28 23:24:54,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f99167a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:24:54, skipping insertion in model container [2021-10-28 23:24:54,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:24:54" (3/3) ... [2021-10-28 23:24:54,483 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-sre-symm.wvr.c [2021-10-28 23:24:54,488 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 23:24:54,489 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:24:54,489 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:24:54,489 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 23:24:54,526 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,527 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,532 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,532 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,533 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,533 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,533 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,533 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,534 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,534 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,534 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,534 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,534 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,535 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,535 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,535 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,535 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,535 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,536 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,536 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,537 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,537 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,537 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,538 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,538 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,538 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,538 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,539 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,539 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,539 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,539 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,539 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,540 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,540 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,540 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,540 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,540 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,541 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,541 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,541 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,544 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,550 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,551 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,551 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,564 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,565 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,568 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,569 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:24:54,577 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-28 23:24:54,625 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:24:54,631 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 [2021-10-28 23:24:54,632 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-28 23:24:54,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 92 transitions, 200 flow [2021-10-28 23:24:54,707 INFO L129 PetriNetUnfolder]: 7/90 cut-off events. [2021-10-28 23:24:54,707 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-28 23:24:54,711 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 90 events. 7/90 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2021-10-28 23:24:54,712 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 92 transitions, 200 flow [2021-10-28 23:24:54,717 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 82 transitions, 176 flow [2021-10-28 23:24:54,746 INFO L129 PetriNetUnfolder]: 7/81 cut-off events. [2021-10-28 23:24:54,746 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-28 23:24:54,747 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:24:54,748 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] [2021-10-28 23:24:54,748 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:24:54,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:24:54,754 INFO L85 PathProgramCache]: Analyzing trace with hash -2107598189, now seen corresponding path program 1 times [2021-10-28 23:24:54,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:24:54,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871523531] [2021-10-28 23:24:54,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:24:54,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:24:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:24:55,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:24:55,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:24:55,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871523531] [2021-10-28 23:24:55,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871523531] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:24:55,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:24:55,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:24:55,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011709638] [2021-10-28 23:24:55,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:24:55,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:24:55,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:24:55,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:24:55,318 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 92 [2021-10-28 23:24:55,330 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 82 transitions, 176 flow. Second operand has 8 states, 8 states have (on average 63.75) internal successors, (510), 8 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:55,330 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:24:55,330 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 92 [2021-10-28 23:24:55,332 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:24:55,736 INFO L129 PetriNetUnfolder]: 44/254 cut-off events. [2021-10-28 23:24:55,740 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-10-28 23:24:55,742 INFO L84 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 254 events. 44/254 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 991 event pairs, 9 based on Foata normal form. 9/247 useless extension candidates. Maximal degree in co-relation 265. Up to 38 conditions per place. [2021-10-28 23:24:55,745 INFO L132 encePairwiseOnDemand]: 76/92 looper letters, 46 selfloop transitions, 10 changer transitions 32/140 dead transitions. [2021-10-28 23:24:55,745 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 140 transitions, 477 flow [2021-10-28 23:24:55,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 23:24:55,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-28 23:24:55,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1013 transitions. [2021-10-28 23:24:55,775 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7340579710144928 [2021-10-28 23:24:55,776 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1013 transitions. [2021-10-28 23:24:55,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1013 transitions. [2021-10-28 23:24:55,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:24:55,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1013 transitions. [2021-10-28 23:24:55,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 67.53333333333333) internal successors, (1013), 15 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:55,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 92.0) internal successors, (1472), 16 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:55,801 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 92.0) internal successors, (1472), 16 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:55,803 INFO L186 Difference]: Start difference. First operand has 82 places, 82 transitions, 176 flow. Second operand 15 states and 1013 transitions. [2021-10-28 23:24:55,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 140 transitions, 477 flow [2021-10-28 23:24:55,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 140 transitions, 463 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-28 23:24:55,812 INFO L242 Difference]: Finished difference. Result has 102 places, 84 transitions, 235 flow [2021-10-28 23:24:55,813 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=235, PETRI_PLACES=102, PETRI_TRANSITIONS=84} [2021-10-28 23:24:55,814 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 20 predicate places. [2021-10-28 23:24:55,815 INFO L470 AbstractCegarLoop]: Abstraction has has 102 places, 84 transitions, 235 flow [2021-10-28 23:24:55,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 63.75) internal successors, (510), 8 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:55,815 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:24:55,816 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] [2021-10-28 23:24:55,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:24:55,816 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:24:55,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:24:55,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1392608778, now seen corresponding path program 1 times [2021-10-28 23:24:55,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:24:55,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874121282] [2021-10-28 23:24:55,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:24:55,818 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:24:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:24:55,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:24:55,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:24:55,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874121282] [2021-10-28 23:24:55,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874121282] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:24:55,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:24:55,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:24:55,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241622738] [2021-10-28 23:24:55,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:24:55,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:24:55,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:24:55,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:24:55,935 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 92 [2021-10-28 23:24:55,936 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 84 transitions, 235 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:55,936 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:24:55,936 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 92 [2021-10-28 23:24:55,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:24:56,019 INFO L129 PetriNetUnfolder]: 28/285 cut-off events. [2021-10-28 23:24:56,020 INFO L130 PetriNetUnfolder]: For 75/76 co-relation queries the response was YES. [2021-10-28 23:24:56,022 INFO L84 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 285 events. 28/285 cut-off events. For 75/76 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1310 event pairs, 11 based on Foata normal form. 0/261 useless extension candidates. Maximal degree in co-relation 459. Up to 29 conditions per place. [2021-10-28 23:24:56,025 INFO L132 encePairwiseOnDemand]: 88/92 looper letters, 14 selfloop transitions, 2 changer transitions 2/90 dead transitions. [2021-10-28 23:24:56,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 90 transitions, 283 flow [2021-10-28 23:24:56,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:24:56,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-28 23:24:56,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2021-10-28 23:24:56,027 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8985507246376812 [2021-10-28 23:24:56,028 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2021-10-28 23:24:56,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2021-10-28 23:24:56,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:24:56,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2021-10-28 23:24:56,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:56,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:56,032 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:56,033 INFO L186 Difference]: Start difference. First operand has 102 places, 84 transitions, 235 flow. Second operand 3 states and 248 transitions. [2021-10-28 23:24:56,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 90 transitions, 283 flow [2021-10-28 23:24:56,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 90 transitions, 272 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-10-28 23:24:56,046 INFO L242 Difference]: Finished difference. Result has 90 places, 84 transitions, 234 flow [2021-10-28 23:24:56,046 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2021-10-28 23:24:56,047 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 8 predicate places. [2021-10-28 23:24:56,047 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 234 flow [2021-10-28 23:24:56,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:56,048 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:24:56,048 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] [2021-10-28 23:24:56,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:24:56,077 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:24:56,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:24:56,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1415695118, now seen corresponding path program 2 times [2021-10-28 23:24:56,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:24:56,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832864163] [2021-10-28 23:24:56,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:24:56,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:24:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:24:56,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:24:56,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:24:56,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832864163] [2021-10-28 23:24:56,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832864163] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:24:56,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:24:56,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:24:56,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839984110] [2021-10-28 23:24:56,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:24:56,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:24:56,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:24:56,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:24:56,240 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 92 [2021-10-28 23:24:56,240 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:56,241 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:24:56,241 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 92 [2021-10-28 23:24:56,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:24:56,289 INFO L129 PetriNetUnfolder]: 17/152 cut-off events. [2021-10-28 23:24:56,289 INFO L130 PetriNetUnfolder]: For 55/67 co-relation queries the response was YES. [2021-10-28 23:24:56,290 INFO L84 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 152 events. 17/152 cut-off events. For 55/67 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 429 event pairs, 8 based on Foata normal form. 4/143 useless extension candidates. Maximal degree in co-relation 226. Up to 24 conditions per place. [2021-10-28 23:24:56,292 INFO L132 encePairwiseOnDemand]: 88/92 looper letters, 10 selfloop transitions, 2 changer transitions 8/82 dead transitions. [2021-10-28 23:24:56,292 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 82 transitions, 252 flow [2021-10-28 23:24:56,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:24:56,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-28 23:24:56,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2021-10-28 23:24:56,294 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8840579710144928 [2021-10-28 23:24:56,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2021-10-28 23:24:56,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2021-10-28 23:24:56,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:24:56,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2021-10-28 23:24:56,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:56,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:56,298 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:56,298 INFO L186 Difference]: Start difference. First operand has 90 places, 84 transitions, 234 flow. Second operand 3 states and 244 transitions. [2021-10-28 23:24:56,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 82 transitions, 252 flow [2021-10-28 23:24:56,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 82 transitions, 242 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-10-28 23:24:56,303 INFO L242 Difference]: Finished difference. Result has 90 places, 74 transitions, 186 flow [2021-10-28 23:24:56,303 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=90, PETRI_TRANSITIONS=74} [2021-10-28 23:24:56,304 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 8 predicate places. [2021-10-28 23:24:56,304 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 74 transitions, 186 flow [2021-10-28 23:24:56,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:56,305 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:24:56,305 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] [2021-10-28 23:24:56,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:24:56,306 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:24:56,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:24:56,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1952965175, now seen corresponding path program 1 times [2021-10-28 23:24:56,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:24:56,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231704163] [2021-10-28 23:24:56,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:24:56,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:24:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:24:56,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:24:56,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:24:56,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231704163] [2021-10-28 23:24:56,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231704163] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:24:56,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:24:56,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:24:56,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228358458] [2021-10-28 23:24:56,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:24:56,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:24:56,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:24:56,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:24:56,665 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:24:56,667 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 74 transitions, 186 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:56,668 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:24:56,668 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:24:56,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:24:57,136 INFO L129 PetriNetUnfolder]: 75/301 cut-off events. [2021-10-28 23:24:57,137 INFO L130 PetriNetUnfolder]: For 127/129 co-relation queries the response was YES. [2021-10-28 23:24:57,138 INFO L84 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 301 events. 75/301 cut-off events. For 127/129 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1203 event pairs, 30 based on Foata normal form. 1/294 useless extension candidates. Maximal degree in co-relation 565. Up to 99 conditions per place. [2021-10-28 23:24:57,141 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 66 selfloop transitions, 5 changer transitions 28/145 dead transitions. [2021-10-28 23:24:57,141 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 145 transitions, 627 flow [2021-10-28 23:24:57,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-28 23:24:57,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-10-28 23:24:57,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1420 transitions. [2021-10-28 23:24:57,148 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6431159420289855 [2021-10-28 23:24:57,148 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1420 transitions. [2021-10-28 23:24:57,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1420 transitions. [2021-10-28 23:24:57,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:24:57,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1420 transitions. [2021-10-28 23:24:57,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 59.166666666666664) internal successors, (1420), 24 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:57,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 92.0) internal successors, (2300), 25 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:57,162 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 92.0) internal successors, (2300), 25 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:57,162 INFO L186 Difference]: Start difference. First operand has 90 places, 74 transitions, 186 flow. Second operand 24 states and 1420 transitions. [2021-10-28 23:24:57,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 145 transitions, 627 flow [2021-10-28 23:24:57,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 145 transitions, 566 flow, removed 29 selfloop flow, removed 5 redundant places. [2021-10-28 23:24:57,168 INFO L242 Difference]: Finished difference. Result has 123 places, 78 transitions, 265 flow [2021-10-28 23:24:57,169 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=265, PETRI_PLACES=123, PETRI_TRANSITIONS=78} [2021-10-28 23:24:57,169 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 41 predicate places. [2021-10-28 23:24:57,170 INFO L470 AbstractCegarLoop]: Abstraction has has 123 places, 78 transitions, 265 flow [2021-10-28 23:24:57,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:57,170 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:24:57,171 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] [2021-10-28 23:24:57,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:24:57,171 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:24:57,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:24:57,172 INFO L85 PathProgramCache]: Analyzing trace with hash -191362153, now seen corresponding path program 2 times [2021-10-28 23:24:57,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:24:57,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767387146] [2021-10-28 23:24:57,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:24:57,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:24:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:24:57,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:24:57,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:24:57,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767387146] [2021-10-28 23:24:57,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767387146] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:24:57,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:24:57,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:24:57,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048349463] [2021-10-28 23:24:57,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:24:57,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:24:57,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:24:57,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:24:57,418 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:24:57,419 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 78 transitions, 265 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:57,419 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:24:57,419 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:24:57,419 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:24:57,829 INFO L129 PetriNetUnfolder]: 115/486 cut-off events. [2021-10-28 23:24:57,829 INFO L130 PetriNetUnfolder]: For 1313/1313 co-relation queries the response was YES. [2021-10-28 23:24:57,833 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1622 conditions, 486 events. 115/486 cut-off events. For 1313/1313 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2712 event pairs, 55 based on Foata normal form. 1/479 useless extension candidates. Maximal degree in co-relation 1514. Up to 164 conditions per place. [2021-10-28 23:24:57,839 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 95 selfloop transitions, 5 changer transitions 28/174 dead transitions. [2021-10-28 23:24:57,840 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 174 transitions, 1161 flow [2021-10-28 23:24:57,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-28 23:24:57,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-10-28 23:24:57,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1425 transitions. [2021-10-28 23:24:57,847 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6453804347826086 [2021-10-28 23:24:57,847 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1425 transitions. [2021-10-28 23:24:57,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1425 transitions. [2021-10-28 23:24:57,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:24:57,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1425 transitions. [2021-10-28 23:24:57,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 59.375) internal successors, (1425), 24 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:57,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 92.0) internal successors, (2300), 25 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:57,866 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 92.0) internal successors, (2300), 25 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:57,867 INFO L186 Difference]: Start difference. First operand has 123 places, 78 transitions, 265 flow. Second operand 24 states and 1425 transitions. [2021-10-28 23:24:57,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 174 transitions, 1161 flow [2021-10-28 23:24:57,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 174 transitions, 1037 flow, removed 59 selfloop flow, removed 12 redundant places. [2021-10-28 23:24:57,883 INFO L242 Difference]: Finished difference. Result has 139 places, 82 transitions, 345 flow [2021-10-28 23:24:57,884 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=345, PETRI_PLACES=139, PETRI_TRANSITIONS=82} [2021-10-28 23:24:57,884 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 57 predicate places. [2021-10-28 23:24:57,885 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 82 transitions, 345 flow [2021-10-28 23:24:57,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:57,885 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:24:57,886 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] [2021-10-28 23:24:57,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:24:57,886 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:24:57,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:24:57,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1778161647, now seen corresponding path program 3 times [2021-10-28 23:24:57,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:24:57,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958090470] [2021-10-28 23:24:57,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:24:57,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:24:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:24:58,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:24:58,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:24:58,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958090470] [2021-10-28 23:24:58,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958090470] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:24:58,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:24:58,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:24:58,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989408044] [2021-10-28 23:24:58,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:24:58,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:24:58,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:24:58,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:24:58,069 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:24:58,071 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 82 transitions, 345 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:58,071 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:24:58,071 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:24:58,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:24:58,450 INFO L129 PetriNetUnfolder]: 122/491 cut-off events. [2021-10-28 23:24:58,450 INFO L130 PetriNetUnfolder]: For 2467/2467 co-relation queries the response was YES. [2021-10-28 23:24:58,455 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2058 conditions, 491 events. 122/491 cut-off events. For 2467/2467 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2624 event pairs, 69 based on Foata normal form. 1/479 useless extension candidates. Maximal degree in co-relation 1939. Up to 215 conditions per place. [2021-10-28 23:24:58,460 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 60 selfloop transitions, 12 changer transitions 23/141 dead transitions. [2021-10-28 23:24:58,460 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 141 transitions, 1157 flow [2021-10-28 23:24:58,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-28 23:24:58,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-10-28 23:24:58,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1294 transitions. [2021-10-28 23:24:58,469 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6393280632411067 [2021-10-28 23:24:58,469 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1294 transitions. [2021-10-28 23:24:58,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1294 transitions. [2021-10-28 23:24:58,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:24:58,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1294 transitions. [2021-10-28 23:24:58,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 58.81818181818182) internal successors, (1294), 22 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:58,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 92.0) internal successors, (2116), 23 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:58,482 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 92.0) internal successors, (2116), 23 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:58,483 INFO L186 Difference]: Start difference. First operand has 139 places, 82 transitions, 345 flow. Second operand 22 states and 1294 transitions. [2021-10-28 23:24:58,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 141 transitions, 1157 flow [2021-10-28 23:24:58,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 141 transitions, 1084 flow, removed 35 selfloop flow, removed 11 redundant places. [2021-10-28 23:24:58,500 INFO L242 Difference]: Finished difference. Result has 146 places, 92 transitions, 498 flow [2021-10-28 23:24:58,500 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=498, PETRI_PLACES=146, PETRI_TRANSITIONS=92} [2021-10-28 23:24:58,500 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 64 predicate places. [2021-10-28 23:24:58,501 INFO L470 AbstractCegarLoop]: Abstraction has has 146 places, 92 transitions, 498 flow [2021-10-28 23:24:58,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:58,501 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:24:58,502 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] [2021-10-28 23:24:58,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:24:58,502 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:24:58,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:24:58,503 INFO L85 PathProgramCache]: Analyzing trace with hash 2131811099, now seen corresponding path program 4 times [2021-10-28 23:24:58,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:24:58,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982755037] [2021-10-28 23:24:58,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:24:58,504 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:24:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:24:58,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:24:58,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:24:58,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982755037] [2021-10-28 23:24:58,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982755037] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:24:58,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:24:58,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:24:58,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601850347] [2021-10-28 23:24:58,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:24:58,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:24:58,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:24:58,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:24:58,662 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:24:58,663 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 92 transitions, 498 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:58,663 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:24:58,663 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:24:58,663 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:24:59,100 INFO L129 PetriNetUnfolder]: 135/540 cut-off events. [2021-10-28 23:24:59,100 INFO L130 PetriNetUnfolder]: For 3474/3474 co-relation queries the response was YES. [2021-10-28 23:24:59,105 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2517 conditions, 540 events. 135/540 cut-off events. For 3474/3474 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3047 event pairs, 79 based on Foata normal form. 1/531 useless extension candidates. Maximal degree in co-relation 2394. Up to 219 conditions per place. [2021-10-28 23:24:59,111 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 59 selfloop transitions, 19 changer transitions 23/147 dead transitions. [2021-10-28 23:24:59,111 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 147 transitions, 1403 flow [2021-10-28 23:24:59,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-28 23:24:59,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-10-28 23:24:59,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1184 transitions. [2021-10-28 23:24:59,117 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6434782608695652 [2021-10-28 23:24:59,117 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1184 transitions. [2021-10-28 23:24:59,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1184 transitions. [2021-10-28 23:24:59,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:24:59,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1184 transitions. [2021-10-28 23:24:59,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 59.2) internal successors, (1184), 20 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:59,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 92.0) internal successors, (1932), 21 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:59,128 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 92.0) internal successors, (1932), 21 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:59,128 INFO L186 Difference]: Start difference. First operand has 146 places, 92 transitions, 498 flow. Second operand 20 states and 1184 transitions. [2021-10-28 23:24:59,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 147 transitions, 1403 flow [2021-10-28 23:24:59,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 147 transitions, 1255 flow, removed 74 selfloop flow, removed 9 redundant places. [2021-10-28 23:24:59,152 INFO L242 Difference]: Finished difference. Result has 159 places, 102 transitions, 682 flow [2021-10-28 23:24:59,152 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=682, PETRI_PLACES=159, PETRI_TRANSITIONS=102} [2021-10-28 23:24:59,153 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 77 predicate places. [2021-10-28 23:24:59,153 INFO L470 AbstractCegarLoop]: Abstraction has has 159 places, 102 transitions, 682 flow [2021-10-28 23:24:59,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:59,153 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:24:59,154 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] [2021-10-28 23:24:59,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:24:59,154 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:24:59,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:24:59,155 INFO L85 PathProgramCache]: Analyzing trace with hash 661882649, now seen corresponding path program 5 times [2021-10-28 23:24:59,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:24:59,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166039048] [2021-10-28 23:24:59,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:24:59,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:24:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:24:59,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:24:59,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:24:59,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166039048] [2021-10-28 23:24:59,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166039048] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:24:59,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:24:59,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:24:59,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299477804] [2021-10-28 23:24:59,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:24:59,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:24:59,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:24:59,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:24:59,306 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:24:59,307 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 102 transitions, 682 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:59,307 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:24:59,307 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:24:59,308 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:24:59,735 INFO L129 PetriNetUnfolder]: 132/533 cut-off events. [2021-10-28 23:24:59,735 INFO L130 PetriNetUnfolder]: For 4872/4875 co-relation queries the response was YES. [2021-10-28 23:24:59,741 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2789 conditions, 533 events. 132/533 cut-off events. For 4872/4875 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2997 event pairs, 71 based on Foata normal form. 1/522 useless extension candidates. Maximal degree in co-relation 2657. Up to 229 conditions per place. [2021-10-28 23:24:59,747 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 69 selfloop transitions, 22 changer transitions 26/163 dead transitions. [2021-10-28 23:24:59,747 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 163 transitions, 1854 flow [2021-10-28 23:24:59,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-28 23:24:59,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-10-28 23:24:59,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1183 transitions. [2021-10-28 23:24:59,752 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6429347826086956 [2021-10-28 23:24:59,752 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1183 transitions. [2021-10-28 23:24:59,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1183 transitions. [2021-10-28 23:24:59,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:24:59,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1183 transitions. [2021-10-28 23:24:59,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 59.15) internal successors, (1183), 20 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:59,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 92.0) internal successors, (1932), 21 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:59,761 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 92.0) internal successors, (1932), 21 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:59,761 INFO L186 Difference]: Start difference. First operand has 159 places, 102 transitions, 682 flow. Second operand 20 states and 1183 transitions. [2021-10-28 23:24:59,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 163 transitions, 1854 flow [2021-10-28 23:24:59,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 163 transitions, 1665 flow, removed 85 selfloop flow, removed 10 redundant places. [2021-10-28 23:24:59,794 INFO L242 Difference]: Finished difference. Result has 172 places, 113 transitions, 882 flow [2021-10-28 23:24:59,794 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=882, PETRI_PLACES=172, PETRI_TRANSITIONS=113} [2021-10-28 23:24:59,795 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 90 predicate places. [2021-10-28 23:24:59,795 INFO L470 AbstractCegarLoop]: Abstraction has has 172 places, 113 transitions, 882 flow [2021-10-28 23:24:59,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:59,795 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:24:59,796 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] [2021-10-28 23:24:59,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 23:24:59,796 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:24:59,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:24:59,797 INFO L85 PathProgramCache]: Analyzing trace with hash -276423075, now seen corresponding path program 1 times [2021-10-28 23:24:59,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:24:59,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006540121] [2021-10-28 23:24:59,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:24:59,797 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:24:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:24:59,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:24:59,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:24:59,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006540121] [2021-10-28 23:24:59,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006540121] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:24:59,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:24:59,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:24:59,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201784346] [2021-10-28 23:24:59,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:24:59,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:24:59,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:24:59,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:24:59,859 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 92 [2021-10-28 23:24:59,860 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 113 transitions, 882 flow. Second operand has 5 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:59,860 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:24:59,860 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 92 [2021-10-28 23:24:59,861 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:24:59,980 INFO L129 PetriNetUnfolder]: 60/403 cut-off events. [2021-10-28 23:24:59,980 INFO L130 PetriNetUnfolder]: For 3349/3380 co-relation queries the response was YES. [2021-10-28 23:24:59,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1779 conditions, 403 events. 60/403 cut-off events. For 3349/3380 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2268 event pairs, 38 based on Foata normal form. 13/394 useless extension candidates. Maximal degree in co-relation 1676. Up to 57 conditions per place. [2021-10-28 23:24:59,988 INFO L132 encePairwiseOnDemand]: 84/92 looper letters, 10 selfloop transitions, 8 changer transitions 0/119 dead transitions. [2021-10-28 23:24:59,989 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 119 transitions, 934 flow [2021-10-28 23:24:59,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:24:59,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-28 23:24:59,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 400 transitions. [2021-10-28 23:24:59,990 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8695652173913043 [2021-10-28 23:24:59,990 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 400 transitions. [2021-10-28 23:24:59,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 400 transitions. [2021-10-28 23:24:59,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:24:59,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 400 transitions. [2021-10-28 23:24:59,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:24:59,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 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) [2021-10-28 23:24:59,994 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 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) [2021-10-28 23:24:59,994 INFO L186 Difference]: Start difference. First operand has 172 places, 113 transitions, 882 flow. Second operand 5 states and 400 transitions. [2021-10-28 23:24:59,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 119 transitions, 934 flow [2021-10-28 23:25:00,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 119 transitions, 818 flow, removed 50 selfloop flow, removed 11 redundant places. [2021-10-28 23:25:00,021 INFO L242 Difference]: Finished difference. Result has 156 places, 117 transitions, 814 flow [2021-10-28 23:25:00,022 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=814, PETRI_PLACES=156, PETRI_TRANSITIONS=117} [2021-10-28 23:25:00,022 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 74 predicate places. [2021-10-28 23:25:00,022 INFO L470 AbstractCegarLoop]: Abstraction has has 156 places, 117 transitions, 814 flow [2021-10-28 23:25:00,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:00,023 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:00,023 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] [2021-10-28 23:25:00,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 23:25:00,023 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:00,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:00,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1685080521, now seen corresponding path program 2 times [2021-10-28 23:25:00,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:00,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587874596] [2021-10-28 23:25:00,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:00,025 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:00,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:00,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:00,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587874596] [2021-10-28 23:25:00,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587874596] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:00,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:00,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:25:00,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490113670] [2021-10-28 23:25:00,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:25:00,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:00,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:25:00,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:25:00,080 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 92 [2021-10-28 23:25:00,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 117 transitions, 814 flow. Second operand has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:00,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:00,081 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 92 [2021-10-28 23:25:00,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:00,184 INFO L129 PetriNetUnfolder]: 50/352 cut-off events. [2021-10-28 23:25:00,184 INFO L130 PetriNetUnfolder]: For 2146/2170 co-relation queries the response was YES. [2021-10-28 23:25:00,188 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1433 conditions, 352 events. 50/352 cut-off events. For 2146/2170 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1872 event pairs, 27 based on Foata normal form. 13/350 useless extension candidates. Maximal degree in co-relation 1262. Up to 49 conditions per place. [2021-10-28 23:25:00,191 INFO L132 encePairwiseOnDemand]: 84/92 looper letters, 14 selfloop transitions, 7 changer transitions 0/122 dead transitions. [2021-10-28 23:25:00,192 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 122 transitions, 880 flow [2021-10-28 23:25:00,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:25:00,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-28 23:25:00,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 322 transitions. [2021-10-28 23:25:00,193 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.875 [2021-10-28 23:25:00,194 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 322 transitions. [2021-10-28 23:25:00,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 322 transitions. [2021-10-28 23:25:00,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:00,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 322 transitions. [2021-10-28 23:25:00,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:00,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:00,197 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:00,197 INFO L186 Difference]: Start difference. First operand has 156 places, 117 transitions, 814 flow. Second operand 4 states and 322 transitions. [2021-10-28 23:25:00,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 122 transitions, 880 flow [2021-10-28 23:25:00,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 122 transitions, 862 flow, removed 8 selfloop flow, removed 1 redundant places. [2021-10-28 23:25:00,217 INFO L242 Difference]: Finished difference. Result has 160 places, 119 transitions, 834 flow [2021-10-28 23:25:00,218 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=834, PETRI_PLACES=160, PETRI_TRANSITIONS=119} [2021-10-28 23:25:00,218 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 78 predicate places. [2021-10-28 23:25:00,218 INFO L470 AbstractCegarLoop]: Abstraction has has 160 places, 119 transitions, 834 flow [2021-10-28 23:25:00,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:00,219 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:00,219 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] [2021-10-28 23:25:00,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 23:25:00,219 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:00,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:00,220 INFO L85 PathProgramCache]: Analyzing trace with hash 240417249, now seen corresponding path program 1 times [2021-10-28 23:25:00,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:00,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83038090] [2021-10-28 23:25:00,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:00,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:00,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:00,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:00,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83038090] [2021-10-28 23:25:00,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83038090] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:00,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:00,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:25:00,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034909891] [2021-10-28 23:25:00,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:25:00,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:00,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:25:00,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:25:00,285 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 92 [2021-10-28 23:25:00,286 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 119 transitions, 834 flow. Second operand has 5 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:00,286 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:00,286 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 92 [2021-10-28 23:25:00,286 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:00,391 INFO L129 PetriNetUnfolder]: 49/358 cut-off events. [2021-10-28 23:25:00,392 INFO L130 PetriNetUnfolder]: For 1971/1996 co-relation queries the response was YES. [2021-10-28 23:25:00,396 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1433 conditions, 358 events. 49/358 cut-off events. For 1971/1996 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1898 event pairs, 27 based on Foata normal form. 11/356 useless extension candidates. Maximal degree in co-relation 1255. Up to 50 conditions per place. [2021-10-28 23:25:00,399 INFO L132 encePairwiseOnDemand]: 87/92 looper letters, 15 selfloop transitions, 6 changer transitions 0/122 dead transitions. [2021-10-28 23:25:00,399 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 122 transitions, 892 flow [2021-10-28 23:25:00,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:25:00,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-28 23:25:00,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 398 transitions. [2021-10-28 23:25:00,401 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8652173913043478 [2021-10-28 23:25:00,401 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 398 transitions. [2021-10-28 23:25:00,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 398 transitions. [2021-10-28 23:25:00,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:00,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 398 transitions. [2021-10-28 23:25:00,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:00,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 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) [2021-10-28 23:25:00,405 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 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) [2021-10-28 23:25:00,405 INFO L186 Difference]: Start difference. First operand has 160 places, 119 transitions, 834 flow. Second operand 5 states and 398 transitions. [2021-10-28 23:25:00,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 122 transitions, 892 flow [2021-10-28 23:25:00,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 122 transitions, 874 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-10-28 23:25:00,426 INFO L242 Difference]: Finished difference. Result has 162 places, 121 transitions, 852 flow [2021-10-28 23:25:00,426 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=852, PETRI_PLACES=162, PETRI_TRANSITIONS=121} [2021-10-28 23:25:00,427 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 80 predicate places. [2021-10-28 23:25:00,427 INFO L470 AbstractCegarLoop]: Abstraction has has 162 places, 121 transitions, 852 flow [2021-10-28 23:25:00,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:00,428 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:00,428 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] [2021-10-28 23:25:00,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 23:25:00,428 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:00,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:00,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1922588559, now seen corresponding path program 6 times [2021-10-28 23:25:00,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:00,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509196768] [2021-10-28 23:25:00,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:00,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:00,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:00,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:00,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509196768] [2021-10-28 23:25:00,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509196768] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:00,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:00,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:00,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120436161] [2021-10-28 23:25:00,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:00,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:00,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:00,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:00,582 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:00,583 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 121 transitions, 852 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:00,583 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:00,583 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:00,584 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:00,967 INFO L129 PetriNetUnfolder]: 120/528 cut-off events. [2021-10-28 23:25:00,967 INFO L130 PetriNetUnfolder]: For 3392/3398 co-relation queries the response was YES. [2021-10-28 23:25:00,973 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2529 conditions, 528 events. 120/528 cut-off events. For 3392/3398 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3035 event pairs, 75 based on Foata normal form. 1/521 useless extension candidates. Maximal degree in co-relation 2403. Up to 216 conditions per place. [2021-10-28 23:25:00,978 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 65 selfloop transitions, 27 changer transitions 24/170 dead transitions. [2021-10-28 23:25:00,978 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 170 transitions, 1684 flow [2021-10-28 23:25:00,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-28 23:25:00,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-28 23:25:00,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1241 transitions. [2021-10-28 23:25:00,981 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6423395445134575 [2021-10-28 23:25:00,982 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1241 transitions. [2021-10-28 23:25:00,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1241 transitions. [2021-10-28 23:25:00,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:00,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1241 transitions. [2021-10-28 23:25:00,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 59.095238095238095) internal successors, (1241), 21 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:00,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 92.0) internal successors, (2024), 22 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:00,991 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 92.0) internal successors, (2024), 22 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:00,991 INFO L186 Difference]: Start difference. First operand has 162 places, 121 transitions, 852 flow. Second operand 21 states and 1241 transitions. [2021-10-28 23:25:00,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 170 transitions, 1684 flow [2021-10-28 23:25:01,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 170 transitions, 1670 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-10-28 23:25:01,022 INFO L242 Difference]: Finished difference. Result has 196 places, 131 transitions, 1076 flow [2021-10-28 23:25:01,023 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1076, PETRI_PLACES=196, PETRI_TRANSITIONS=131} [2021-10-28 23:25:01,023 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 114 predicate places. [2021-10-28 23:25:01,023 INFO L470 AbstractCegarLoop]: Abstraction has has 196 places, 131 transitions, 1076 flow [2021-10-28 23:25:01,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:01,024 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:01,024 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] [2021-10-28 23:25:01,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 23:25:01,025 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:01,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:01,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1785571825, now seen corresponding path program 2 times [2021-10-28 23:25:01,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:01,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264734283] [2021-10-28 23:25:01,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:01,026 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:01,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:01,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:01,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264734283] [2021-10-28 23:25:01,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264734283] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:01,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:01,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:25:01,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272079159] [2021-10-28 23:25:01,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:25:01,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:01,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:25:01,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:25:01,074 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 92 [2021-10-28 23:25:01,075 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 131 transitions, 1076 flow. Second operand has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:01,075 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:01,075 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 92 [2021-10-28 23:25:01,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:01,174 INFO L129 PetriNetUnfolder]: 48/340 cut-off events. [2021-10-28 23:25:01,175 INFO L130 PetriNetUnfolder]: For 2472/2495 co-relation queries the response was YES. [2021-10-28 23:25:01,179 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1556 conditions, 340 events. 48/340 cut-off events. For 2472/2495 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1798 event pairs, 20 based on Foata normal form. 12/342 useless extension candidates. Maximal degree in co-relation 1464. Up to 51 conditions per place. [2021-10-28 23:25:01,182 INFO L132 encePairwiseOnDemand]: 87/92 looper letters, 17 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2021-10-28 23:25:01,183 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 132 transitions, 1122 flow [2021-10-28 23:25:01,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:25:01,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-28 23:25:01,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 321 transitions. [2021-10-28 23:25:01,184 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8722826086956522 [2021-10-28 23:25:01,184 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 321 transitions. [2021-10-28 23:25:01,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 321 transitions. [2021-10-28 23:25:01,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:01,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 321 transitions. [2021-10-28 23:25:01,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:01,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:01,187 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:01,188 INFO L186 Difference]: Start difference. First operand has 196 places, 131 transitions, 1076 flow. Second operand 4 states and 321 transitions. [2021-10-28 23:25:01,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 132 transitions, 1122 flow [2021-10-28 23:25:01,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 132 transitions, 1024 flow, removed 33 selfloop flow, removed 16 redundant places. [2021-10-28 23:25:01,215 INFO L242 Difference]: Finished difference. Result has 171 places, 131 transitions, 990 flow [2021-10-28 23:25:01,216 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=990, PETRI_PLACES=171, PETRI_TRANSITIONS=131} [2021-10-28 23:25:01,216 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 89 predicate places. [2021-10-28 23:25:01,216 INFO L470 AbstractCegarLoop]: Abstraction has has 171 places, 131 transitions, 990 flow [2021-10-28 23:25:01,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:01,217 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:01,217 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] [2021-10-28 23:25:01,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 23:25:01,217 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:01,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:01,218 INFO L85 PathProgramCache]: Analyzing trace with hash 13541387, now seen corresponding path program 1 times [2021-10-28 23:25:01,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:01,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337708089] [2021-10-28 23:25:01,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:01,218 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:01,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:01,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:01,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337708089] [2021-10-28 23:25:01,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337708089] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:01,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:01,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:01,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852958015] [2021-10-28 23:25:01,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:01,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:01,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:01,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:01,347 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:01,348 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 131 transitions, 990 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:01,348 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:01,348 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:01,348 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:01,740 INFO L129 PetriNetUnfolder]: 94/442 cut-off events. [2021-10-28 23:25:01,741 INFO L130 PetriNetUnfolder]: For 2364/2380 co-relation queries the response was YES. [2021-10-28 23:25:01,747 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2048 conditions, 442 events. 94/442 cut-off events. For 2364/2380 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2346 event pairs, 35 based on Foata normal form. 1/434 useless extension candidates. Maximal degree in co-relation 1922. Up to 188 conditions per place. [2021-10-28 23:25:01,752 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 106 selfloop transitions, 5 changer transitions 32/197 dead transitions. [2021-10-28 23:25:01,752 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 197 transitions, 1748 flow [2021-10-28 23:25:01,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-28 23:25:01,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-10-28 23:25:01,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1419 transitions. [2021-10-28 23:25:01,759 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6426630434782609 [2021-10-28 23:25:01,760 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1419 transitions. [2021-10-28 23:25:01,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1419 transitions. [2021-10-28 23:25:01,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:01,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1419 transitions. [2021-10-28 23:25:01,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 59.125) internal successors, (1419), 24 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:01,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 92.0) internal successors, (2300), 25 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:01,773 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 92.0) internal successors, (2300), 25 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:01,774 INFO L186 Difference]: Start difference. First operand has 171 places, 131 transitions, 990 flow. Second operand 24 states and 1419 transitions. [2021-10-28 23:25:01,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 197 transitions, 1748 flow [2021-10-28 23:25:01,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 197 transitions, 1688 flow, removed 27 selfloop flow, removed 5 redundant places. [2021-10-28 23:25:01,804 INFO L242 Difference]: Finished difference. Result has 207 places, 131 transitions, 1029 flow [2021-10-28 23:25:01,804 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1029, PETRI_PLACES=207, PETRI_TRANSITIONS=131} [2021-10-28 23:25:01,805 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 125 predicate places. [2021-10-28 23:25:01,805 INFO L470 AbstractCegarLoop]: Abstraction has has 207 places, 131 transitions, 1029 flow [2021-10-28 23:25:01,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:01,806 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:01,806 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] [2021-10-28 23:25:01,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-28 23:25:01,806 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:01,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:01,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1106046871, now seen corresponding path program 2 times [2021-10-28 23:25:01,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:01,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736979648] [2021-10-28 23:25:01,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:01,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:01,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:01,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:01,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736979648] [2021-10-28 23:25:01,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736979648] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:01,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:01,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:01,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423033634] [2021-10-28 23:25:01,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:01,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:01,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:01,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:01,995 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:01,997 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 131 transitions, 1029 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:01,997 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:01,997 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:01,997 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:02,547 INFO L129 PetriNetUnfolder]: 91/454 cut-off events. [2021-10-28 23:25:02,548 INFO L130 PetriNetUnfolder]: For 2893/2910 co-relation queries the response was YES. [2021-10-28 23:25:02,556 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2230 conditions, 454 events. 91/454 cut-off events. For 2893/2910 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2517 event pairs, 30 based on Foata normal form. 1/451 useless extension candidates. Maximal degree in co-relation 2134. Up to 188 conditions per place. [2021-10-28 23:25:02,561 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 108 selfloop transitions, 5 changer transitions 35/202 dead transitions. [2021-10-28 23:25:02,562 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 202 transitions, 1908 flow [2021-10-28 23:25:02,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-28 23:25:02,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-10-28 23:25:02,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1424 transitions. [2021-10-28 23:25:02,567 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.644927536231884 [2021-10-28 23:25:02,567 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1424 transitions. [2021-10-28 23:25:02,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1424 transitions. [2021-10-28 23:25:02,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:02,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1424 transitions. [2021-10-28 23:25:02,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 59.333333333333336) internal successors, (1424), 24 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:02,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 92.0) internal successors, (2300), 25 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:02,582 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 92.0) internal successors, (2300), 25 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:02,582 INFO L186 Difference]: Start difference. First operand has 207 places, 131 transitions, 1029 flow. Second operand 24 states and 1424 transitions. [2021-10-28 23:25:02,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 202 transitions, 1908 flow [2021-10-28 23:25:02,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 202 transitions, 1620 flow, removed 86 selfloop flow, removed 22 redundant places. [2021-10-28 23:25:02,622 INFO L242 Difference]: Finished difference. Result has 209 places, 131 transitions, 992 flow [2021-10-28 23:25:02,623 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=941, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=992, PETRI_PLACES=209, PETRI_TRANSITIONS=131} [2021-10-28 23:25:02,623 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 127 predicate places. [2021-10-28 23:25:02,624 INFO L470 AbstractCegarLoop]: Abstraction has has 209 places, 131 transitions, 992 flow [2021-10-28 23:25:02,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:02,625 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:02,625 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] [2021-10-28 23:25:02,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-28 23:25:02,625 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:02,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:02,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1269362189, now seen corresponding path program 3 times [2021-10-28 23:25:02,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:02,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113106848] [2021-10-28 23:25:02,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:02,628 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:02,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:02,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:02,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113106848] [2021-10-28 23:25:02,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113106848] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:02,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:02,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:02,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2325714] [2021-10-28 23:25:02,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:02,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:02,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:02,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:02,816 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:02,817 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 131 transitions, 992 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:02,817 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:02,818 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:02,818 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:03,197 INFO L129 PetriNetUnfolder]: 92/463 cut-off events. [2021-10-28 23:25:03,198 INFO L130 PetriNetUnfolder]: For 2856/2877 co-relation queries the response was YES. [2021-10-28 23:25:03,204 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2224 conditions, 463 events. 92/463 cut-off events. For 2856/2877 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2568 event pairs, 35 based on Foata normal form. 2/460 useless extension candidates. Maximal degree in co-relation 2127. Up to 212 conditions per place. [2021-10-28 23:25:03,208 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 86 selfloop transitions, 14 changer transitions 20/174 dead transitions. [2021-10-28 23:25:03,208 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 174 transitions, 1708 flow [2021-10-28 23:25:03,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 23:25:03,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-28 23:25:03,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 956 transitions. [2021-10-28 23:25:03,211 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6494565217391305 [2021-10-28 23:25:03,212 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 956 transitions. [2021-10-28 23:25:03,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 956 transitions. [2021-10-28 23:25:03,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:03,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 956 transitions. [2021-10-28 23:25:03,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 59.75) internal successors, (956), 16 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:03,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:03,228 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:03,229 INFO L186 Difference]: Start difference. First operand has 209 places, 131 transitions, 992 flow. Second operand 16 states and 956 transitions. [2021-10-28 23:25:03,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 174 transitions, 1708 flow [2021-10-28 23:25:03,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 174 transitions, 1446 flow, removed 89 selfloop flow, removed 22 redundant places. [2021-10-28 23:25:03,263 INFO L242 Difference]: Finished difference. Result has 196 places, 141 transitions, 1046 flow [2021-10-28 23:25:03,263 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=897, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1046, PETRI_PLACES=196, PETRI_TRANSITIONS=141} [2021-10-28 23:25:03,264 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 114 predicate places. [2021-10-28 23:25:03,264 INFO L470 AbstractCegarLoop]: Abstraction has has 196 places, 141 transitions, 1046 flow [2021-10-28 23:25:03,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:03,265 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:03,265 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] [2021-10-28 23:25:03,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-28 23:25:03,265 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:03,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:03,266 INFO L85 PathProgramCache]: Analyzing trace with hash 559582597, now seen corresponding path program 4 times [2021-10-28 23:25:03,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:03,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288102211] [2021-10-28 23:25:03,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:03,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:03,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:03,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:03,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288102211] [2021-10-28 23:25:03,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288102211] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:03,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:03,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:03,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905988363] [2021-10-28 23:25:03,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:03,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:03,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:03,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:03,399 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:03,400 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 141 transitions, 1046 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:03,400 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:03,400 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:03,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:03,863 INFO L129 PetriNetUnfolder]: 111/515 cut-off events. [2021-10-28 23:25:03,863 INFO L130 PetriNetUnfolder]: For 2759/2779 co-relation queries the response was YES. [2021-10-28 23:25:03,869 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2369 conditions, 515 events. 111/515 cut-off events. For 2759/2779 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3032 event pairs, 42 based on Foata normal form. 2/511 useless extension candidates. Maximal degree in co-relation 2278. Up to 217 conditions per place. [2021-10-28 23:25:03,874 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 101 selfloop transitions, 15 changer transitions 27/197 dead transitions. [2021-10-28 23:25:03,874 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 197 transitions, 1885 flow [2021-10-28 23:25:03,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-28 23:25:03,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-28 23:25:03,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1245 transitions. [2021-10-28 23:25:03,880 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6444099378881988 [2021-10-28 23:25:03,881 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1245 transitions. [2021-10-28 23:25:03,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1245 transitions. [2021-10-28 23:25:03,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:03,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1245 transitions. [2021-10-28 23:25:03,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 59.285714285714285) internal successors, (1245), 21 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:03,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 92.0) internal successors, (2024), 22 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:03,891 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 92.0) internal successors, (2024), 22 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:03,891 INFO L186 Difference]: Start difference. First operand has 196 places, 141 transitions, 1046 flow. Second operand 21 states and 1245 transitions. [2021-10-28 23:25:03,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 197 transitions, 1885 flow [2021-10-28 23:25:03,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 197 transitions, 1740 flow, removed 58 selfloop flow, removed 8 redundant places. [2021-10-28 23:25:03,919 INFO L242 Difference]: Finished difference. Result has 217 places, 153 transitions, 1214 flow [2021-10-28 23:25:03,919 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1214, PETRI_PLACES=217, PETRI_TRANSITIONS=153} [2021-10-28 23:25:03,920 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 135 predicate places. [2021-10-28 23:25:03,920 INFO L470 AbstractCegarLoop]: Abstraction has has 217 places, 153 transitions, 1214 flow [2021-10-28 23:25:03,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:03,920 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:03,921 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] [2021-10-28 23:25:03,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-28 23:25:03,921 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:03,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:03,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1573883247, now seen corresponding path program 5 times [2021-10-28 23:25:03,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:03,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130616909] [2021-10-28 23:25:03,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:03,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:04,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:04,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:04,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130616909] [2021-10-28 23:25:04,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130616909] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:04,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:04,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:04,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286994205] [2021-10-28 23:25:04,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:04,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:04,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:04,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:04,062 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:04,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 153 transitions, 1214 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:04,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:04,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:04,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:04,504 INFO L129 PetriNetUnfolder]: 108/561 cut-off events. [2021-10-28 23:25:04,504 INFO L130 PetriNetUnfolder]: For 3483/3509 co-relation queries the response was YES. [2021-10-28 23:25:04,512 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2607 conditions, 561 events. 108/561 cut-off events. For 3483/3509 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3502 event pairs, 48 based on Foata normal form. 1/555 useless extension candidates. Maximal degree in co-relation 2506. Up to 222 conditions per place. [2021-10-28 23:25:04,543 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 101 selfloop transitions, 20 changer transitions 27/202 dead transitions. [2021-10-28 23:25:04,544 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 202 transitions, 2128 flow [2021-10-28 23:25:04,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-28 23:25:04,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-10-28 23:25:04,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1186 transitions. [2021-10-28 23:25:04,558 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6445652173913043 [2021-10-28 23:25:04,559 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1186 transitions. [2021-10-28 23:25:04,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1186 transitions. [2021-10-28 23:25:04,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:04,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1186 transitions. [2021-10-28 23:25:04,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 59.3) internal successors, (1186), 20 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:04,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 92.0) internal successors, (1932), 21 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:04,575 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 92.0) internal successors, (1932), 21 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:04,575 INFO L186 Difference]: Start difference. First operand has 217 places, 153 transitions, 1214 flow. Second operand 20 states and 1186 transitions. [2021-10-28 23:25:04,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 202 transitions, 2128 flow [2021-10-28 23:25:04,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 202 transitions, 1904 flow, removed 112 selfloop flow, removed 10 redundant places. [2021-10-28 23:25:04,612 INFO L242 Difference]: Finished difference. Result has 230 places, 162 transitions, 1345 flow [2021-10-28 23:25:04,612 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1130, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1345, PETRI_PLACES=230, PETRI_TRANSITIONS=162} [2021-10-28 23:25:04,613 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 148 predicate places. [2021-10-28 23:25:04,613 INFO L470 AbstractCegarLoop]: Abstraction has has 230 places, 162 transitions, 1345 flow [2021-10-28 23:25:04,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:04,613 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:04,614 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] [2021-10-28 23:25:04,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-28 23:25:04,614 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:04,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:04,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1939505159, now seen corresponding path program 6 times [2021-10-28 23:25:04,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:04,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112452214] [2021-10-28 23:25:04,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:04,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:04,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:04,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:04,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:04,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112452214] [2021-10-28 23:25:04,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112452214] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:04,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:04,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:04,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172346453] [2021-10-28 23:25:04,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:04,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:04,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:04,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:04,741 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:04,742 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 162 transitions, 1345 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:04,742 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:04,742 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:04,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:05,165 INFO L129 PetriNetUnfolder]: 105/528 cut-off events. [2021-10-28 23:25:05,165 INFO L130 PetriNetUnfolder]: For 3883/3907 co-relation queries the response was YES. [2021-10-28 23:25:05,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2659 conditions, 528 events. 105/528 cut-off events. For 3883/3907 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3205 event pairs, 39 based on Foata normal form. 1/523 useless extension candidates. Maximal degree in co-relation 2550. Up to 227 conditions per place. [2021-10-28 23:25:05,177 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 105 selfloop transitions, 25 changer transitions 30/214 dead transitions. [2021-10-28 23:25:05,177 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 214 transitions, 2293 flow [2021-10-28 23:25:05,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-28 23:25:05,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-10-28 23:25:05,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1187 transitions. [2021-10-28 23:25:05,181 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6451086956521739 [2021-10-28 23:25:05,181 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1187 transitions. [2021-10-28 23:25:05,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1187 transitions. [2021-10-28 23:25:05,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:05,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1187 transitions. [2021-10-28 23:25:05,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 59.35) internal successors, (1187), 20 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:05,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 92.0) internal successors, (1932), 21 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:05,191 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 92.0) internal successors, (1932), 21 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:05,191 INFO L186 Difference]: Start difference. First operand has 230 places, 162 transitions, 1345 flow. Second operand 20 states and 1187 transitions. [2021-10-28 23:25:05,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 214 transitions, 2293 flow [2021-10-28 23:25:05,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 214 transitions, 2124 flow, removed 75 selfloop flow, removed 11 redundant places. [2021-10-28 23:25:05,253 INFO L242 Difference]: Finished difference. Result has 241 places, 171 transitions, 1473 flow [2021-10-28 23:25:05,253 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1473, PETRI_PLACES=241, PETRI_TRANSITIONS=171} [2021-10-28 23:25:05,255 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 159 predicate places. [2021-10-28 23:25:05,255 INFO L470 AbstractCegarLoop]: Abstraction has has 241 places, 171 transitions, 1473 flow [2021-10-28 23:25:05,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:05,255 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:05,256 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] [2021-10-28 23:25:05,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-28 23:25:05,256 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:05,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:05,257 INFO L85 PathProgramCache]: Analyzing trace with hash -197444507, now seen corresponding path program 7 times [2021-10-28 23:25:05,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:05,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96718145] [2021-10-28 23:25:05,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:05,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:05,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:05,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:05,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96718145] [2021-10-28 23:25:05,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96718145] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:05,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:05,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:05,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625332180] [2021-10-28 23:25:05,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:05,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:05,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:05,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:05,402 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:05,403 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 171 transitions, 1473 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:05,403 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:05,404 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:05,404 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:05,883 INFO L129 PetriNetUnfolder]: 102/513 cut-off events. [2021-10-28 23:25:05,884 INFO L130 PetriNetUnfolder]: For 3633/3664 co-relation queries the response was YES. [2021-10-28 23:25:05,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2601 conditions, 513 events. 102/513 cut-off events. For 3633/3664 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3116 event pairs, 35 based on Foata normal form. 7/515 useless extension candidates. Maximal degree in co-relation 2487. Up to 219 conditions per place. [2021-10-28 23:25:05,896 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 106 selfloop transitions, 26 changer transitions 33/219 dead transitions. [2021-10-28 23:25:05,896 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 219 transitions, 2375 flow [2021-10-28 23:25:05,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-28 23:25:05,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-10-28 23:25:05,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1298 transitions. [2021-10-28 23:25:05,900 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6413043478260869 [2021-10-28 23:25:05,900 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1298 transitions. [2021-10-28 23:25:05,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1298 transitions. [2021-10-28 23:25:05,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:05,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1298 transitions. [2021-10-28 23:25:05,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 59.0) internal successors, (1298), 22 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:05,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 92.0) internal successors, (2116), 23 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:05,910 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 92.0) internal successors, (2116), 23 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:05,910 INFO L186 Difference]: Start difference. First operand has 241 places, 171 transitions, 1473 flow. Second operand 22 states and 1298 transitions. [2021-10-28 23:25:05,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 219 transitions, 2375 flow [2021-10-28 23:25:05,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 219 transitions, 2172 flow, removed 83 selfloop flow, removed 16 redundant places. [2021-10-28 23:25:05,956 INFO L242 Difference]: Finished difference. Result has 248 places, 171 transitions, 1483 flow [2021-10-28 23:25:05,957 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1483, PETRI_PLACES=248, PETRI_TRANSITIONS=171} [2021-10-28 23:25:05,957 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 166 predicate places. [2021-10-28 23:25:05,957 INFO L470 AbstractCegarLoop]: Abstraction has has 248 places, 171 transitions, 1483 flow [2021-10-28 23:25:05,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:05,958 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:05,958 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] [2021-10-28 23:25:05,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-28 23:25:05,959 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:05,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:05,959 INFO L85 PathProgramCache]: Analyzing trace with hash -317309847, now seen corresponding path program 8 times [2021-10-28 23:25:05,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:05,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352131689] [2021-10-28 23:25:05,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:05,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:06,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:06,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:06,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352131689] [2021-10-28 23:25:06,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352131689] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:06,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:06,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:06,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951798274] [2021-10-28 23:25:06,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:06,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:06,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:06,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:06,124 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:06,125 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 171 transitions, 1483 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:06,125 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:06,125 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:06,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:06,464 INFO L129 PetriNetUnfolder]: 93/480 cut-off events. [2021-10-28 23:25:06,464 INFO L130 PetriNetUnfolder]: For 3084/3117 co-relation queries the response was YES. [2021-10-28 23:25:06,470 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2383 conditions, 480 events. 93/480 cut-off events. For 3084/3117 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2791 event pairs, 35 based on Foata normal form. 6/481 useless extension candidates. Maximal degree in co-relation 2269. Up to 218 conditions per place. [2021-10-28 23:25:06,474 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 98 selfloop transitions, 14 changer transitions 31/197 dead transitions. [2021-10-28 23:25:06,474 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 197 transitions, 2031 flow [2021-10-28 23:25:06,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 23:25:06,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-28 23:25:06,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1063 transitions. [2021-10-28 23:25:06,478 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6419082125603864 [2021-10-28 23:25:06,478 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1063 transitions. [2021-10-28 23:25:06,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1063 transitions. [2021-10-28 23:25:06,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:06,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1063 transitions. [2021-10-28 23:25:06,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 59.05555555555556) internal successors, (1063), 18 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:06,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:06,486 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:06,486 INFO L186 Difference]: Start difference. First operand has 248 places, 171 transitions, 1483 flow. Second operand 18 states and 1063 transitions. [2021-10-28 23:25:06,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 197 transitions, 2031 flow [2021-10-28 23:25:06,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 197 transitions, 1912 flow, removed 42 selfloop flow, removed 15 redundant places. [2021-10-28 23:25:06,529 INFO L242 Difference]: Finished difference. Result has 243 places, 156 transitions, 1272 flow [2021-10-28 23:25:06,529 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1408, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1272, PETRI_PLACES=243, PETRI_TRANSITIONS=156} [2021-10-28 23:25:06,529 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 161 predicate places. [2021-10-28 23:25:06,530 INFO L470 AbstractCegarLoop]: Abstraction has has 243 places, 156 transitions, 1272 flow [2021-10-28 23:25:06,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:06,530 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:06,530 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] [2021-10-28 23:25:06,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-28 23:25:06,531 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:06,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:06,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1111382289, now seen corresponding path program 9 times [2021-10-28 23:25:06,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:06,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811861014] [2021-10-28 23:25:06,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:06,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:06,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:06,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:06,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811861014] [2021-10-28 23:25:06,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811861014] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:06,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:06,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:06,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572327763] [2021-10-28 23:25:06,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:06,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:06,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:06,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:06,690 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:06,691 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 156 transitions, 1272 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:06,691 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:06,692 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:06,692 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:07,066 INFO L129 PetriNetUnfolder]: 96/495 cut-off events. [2021-10-28 23:25:07,066 INFO L130 PetriNetUnfolder]: For 2951/2971 co-relation queries the response was YES. [2021-10-28 23:25:07,072 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2409 conditions, 495 events. 96/495 cut-off events. For 2951/2971 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2877 event pairs, 41 based on Foata normal form. 1/490 useless extension candidates. Maximal degree in co-relation 2325. Up to 218 conditions per place. [2021-10-28 23:25:07,104 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 95 selfloop transitions, 22 changer transitions 23/194 dead transitions. [2021-10-28 23:25:07,105 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 194 transitions, 1987 flow [2021-10-28 23:25:07,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 23:25:07,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-28 23:25:07,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1071 transitions. [2021-10-28 23:25:07,109 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6467391304347826 [2021-10-28 23:25:07,109 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1071 transitions. [2021-10-28 23:25:07,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1071 transitions. [2021-10-28 23:25:07,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:07,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1071 transitions. [2021-10-28 23:25:07,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 59.5) internal successors, (1071), 18 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:07,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:07,116 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:07,117 INFO L186 Difference]: Start difference. First operand has 243 places, 156 transitions, 1272 flow. Second operand 18 states and 1071 transitions. [2021-10-28 23:25:07,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 194 transitions, 1987 flow [2021-10-28 23:25:07,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 194 transitions, 1793 flow, removed 41 selfloop flow, removed 19 redundant places. [2021-10-28 23:25:07,160 INFO L242 Difference]: Finished difference. Result has 227 places, 165 transitions, 1361 flow [2021-10-28 23:25:07,161 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1361, PETRI_PLACES=227, PETRI_TRANSITIONS=165} [2021-10-28 23:25:07,161 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 145 predicate places. [2021-10-28 23:25:07,161 INFO L470 AbstractCegarLoop]: Abstraction has has 227 places, 165 transitions, 1361 flow [2021-10-28 23:25:07,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:07,162 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:07,162 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] [2021-10-28 23:25:07,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-28 23:25:07,163 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:07,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:07,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1520587631, now seen corresponding path program 10 times [2021-10-28 23:25:07,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:07,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012791798] [2021-10-28 23:25:07,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:07,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:07,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:07,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:07,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012791798] [2021-10-28 23:25:07,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012791798] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:07,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:07,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:07,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430894477] [2021-10-28 23:25:07,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:07,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:07,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:07,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:07,325 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:07,326 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 165 transitions, 1361 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:07,326 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:07,326 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:07,326 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:07,721 INFO L129 PetriNetUnfolder]: 93/482 cut-off events. [2021-10-28 23:25:07,722 INFO L130 PetriNetUnfolder]: For 2440/2460 co-relation queries the response was YES. [2021-10-28 23:25:07,727 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2279 conditions, 482 events. 93/482 cut-off events. For 2440/2460 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2796 event pairs, 39 based on Foata normal form. 1/477 useless extension candidates. Maximal degree in co-relation 2200. Up to 218 conditions per place. [2021-10-28 23:25:07,731 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 96 selfloop transitions, 24 changer transitions 24/198 dead transitions. [2021-10-28 23:25:07,732 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 198 transitions, 1986 flow [2021-10-28 23:25:07,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 23:25:07,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-28 23:25:07,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1015 transitions. [2021-10-28 23:25:07,734 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6489769820971867 [2021-10-28 23:25:07,735 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1015 transitions. [2021-10-28 23:25:07,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1015 transitions. [2021-10-28 23:25:07,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:07,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1015 transitions. [2021-10-28 23:25:07,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 59.705882352941174) internal successors, (1015), 17 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:07,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:07,742 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:07,742 INFO L186 Difference]: Start difference. First operand has 227 places, 165 transitions, 1361 flow. Second operand 17 states and 1015 transitions. [2021-10-28 23:25:07,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 198 transitions, 1986 flow [2021-10-28 23:25:07,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 198 transitions, 1915 flow, removed 30 selfloop flow, removed 5 redundant places. [2021-10-28 23:25:07,776 INFO L242 Difference]: Finished difference. Result has 239 places, 169 transitions, 1451 flow [2021-10-28 23:25:07,777 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1317, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1451, PETRI_PLACES=239, PETRI_TRANSITIONS=169} [2021-10-28 23:25:07,777 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 157 predicate places. [2021-10-28 23:25:07,778 INFO L470 AbstractCegarLoop]: Abstraction has has 239 places, 169 transitions, 1451 flow [2021-10-28 23:25:07,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:07,778 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:07,778 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] [2021-10-28 23:25:07,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-28 23:25:07,779 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:07,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:07,779 INFO L85 PathProgramCache]: Analyzing trace with hash -303811921, now seen corresponding path program 11 times [2021-10-28 23:25:07,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:07,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594885214] [2021-10-28 23:25:07,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:07,780 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:07,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:07,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:07,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594885214] [2021-10-28 23:25:07,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594885214] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:07,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:07,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:07,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589040998] [2021-10-28 23:25:07,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:07,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:07,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:07,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:07,911 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:07,912 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 169 transitions, 1451 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:07,912 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:07,912 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:07,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:08,257 INFO L129 PetriNetUnfolder]: 89/471 cut-off events. [2021-10-28 23:25:08,257 INFO L130 PetriNetUnfolder]: For 2507/2533 co-relation queries the response was YES. [2021-10-28 23:25:08,262 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2255 conditions, 471 events. 89/471 cut-off events. For 2507/2533 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2722 event pairs, 37 based on Foata normal form. 3/468 useless extension candidates. Maximal degree in co-relation 2170. Up to 218 conditions per place. [2021-10-28 23:25:08,267 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 96 selfloop transitions, 14 changer transitions 30/194 dead transitions. [2021-10-28 23:25:08,267 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 194 transitions, 1969 flow [2021-10-28 23:25:08,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 23:25:08,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-28 23:25:08,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1012 transitions. [2021-10-28 23:25:08,272 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2021-10-28 23:25:08,272 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1012 transitions. [2021-10-28 23:25:08,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1012 transitions. [2021-10-28 23:25:08,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:08,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1012 transitions. [2021-10-28 23:25:08,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 59.529411764705884) internal successors, (1012), 17 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:08,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:08,281 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:08,281 INFO L186 Difference]: Start difference. First operand has 239 places, 169 transitions, 1451 flow. Second operand 17 states and 1012 transitions. [2021-10-28 23:25:08,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 194 transitions, 1969 flow [2021-10-28 23:25:08,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 194 transitions, 1876 flow, removed 25 selfloop flow, removed 8 redundant places. [2021-10-28 23:25:08,317 INFO L242 Difference]: Finished difference. Result has 246 places, 160 transitions, 1306 flow [2021-10-28 23:25:08,317 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1306, PETRI_PLACES=246, PETRI_TRANSITIONS=160} [2021-10-28 23:25:08,318 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 164 predicate places. [2021-10-28 23:25:08,318 INFO L470 AbstractCegarLoop]: Abstraction has has 246 places, 160 transitions, 1306 flow [2021-10-28 23:25:08,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:08,318 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:08,318 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] [2021-10-28 23:25:08,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-28 23:25:08,319 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:08,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:08,319 INFO L85 PathProgramCache]: Analyzing trace with hash 820857339, now seen corresponding path program 12 times [2021-10-28 23:25:08,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:08,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167948836] [2021-10-28 23:25:08,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:08,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:08,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:08,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:08,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167948836] [2021-10-28 23:25:08,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167948836] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:08,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:08,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:08,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598467752] [2021-10-28 23:25:08,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:08,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:08,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:08,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:08,442 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:08,443 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 160 transitions, 1306 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:08,443 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:08,443 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:08,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:08,757 INFO L129 PetriNetUnfolder]: 82/441 cut-off events. [2021-10-28 23:25:08,757 INFO L130 PetriNetUnfolder]: For 2357/2377 co-relation queries the response was YES. [2021-10-28 23:25:08,762 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2062 conditions, 441 events. 82/441 cut-off events. For 2357/2377 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2424 event pairs, 39 based on Foata normal form. 1/436 useless extension candidates. Maximal degree in co-relation 1976. Up to 211 conditions per place. [2021-10-28 23:25:08,766 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 86 selfloop transitions, 3 changer transitions 33/176 dead transitions. [2021-10-28 23:25:08,766 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 176 transitions, 1679 flow [2021-10-28 23:25:08,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 23:25:08,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-28 23:25:08,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1059 transitions. [2021-10-28 23:25:08,770 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6394927536231884 [2021-10-28 23:25:08,770 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1059 transitions. [2021-10-28 23:25:08,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1059 transitions. [2021-10-28 23:25:08,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:08,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1059 transitions. [2021-10-28 23:25:08,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.833333333333336) internal successors, (1059), 18 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:08,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:08,777 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:08,777 INFO L186 Difference]: Start difference. First operand has 246 places, 160 transitions, 1306 flow. Second operand 18 states and 1059 transitions. [2021-10-28 23:25:08,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 176 transitions, 1679 flow [2021-10-28 23:25:08,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 176 transitions, 1561 flow, removed 25 selfloop flow, removed 22 redundant places. [2021-10-28 23:25:08,809 INFO L242 Difference]: Finished difference. Result has 230 places, 140 transitions, 1028 flow [2021-10-28 23:25:08,810 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1028, PETRI_PLACES=230, PETRI_TRANSITIONS=140} [2021-10-28 23:25:08,810 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 148 predicate places. [2021-10-28 23:25:08,810 INFO L470 AbstractCegarLoop]: Abstraction has has 230 places, 140 transitions, 1028 flow [2021-10-28 23:25:08,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:08,812 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:08,812 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] [2021-10-28 23:25:08,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-28 23:25:08,814 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:08,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:08,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1298365229, now seen corresponding path program 13 times [2021-10-28 23:25:08,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:08,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739891716] [2021-10-28 23:25:08,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:08,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:08,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:08,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:08,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739891716] [2021-10-28 23:25:08,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739891716] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:08,932 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:08,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:08,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126790826] [2021-10-28 23:25:08,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:08,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:08,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:08,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:08,935 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:08,935 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 140 transitions, 1028 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:08,935 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:08,936 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:08,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:09,284 INFO L129 PetriNetUnfolder]: 88/460 cut-off events. [2021-10-28 23:25:09,285 INFO L130 PetriNetUnfolder]: For 2339/2356 co-relation queries the response was YES. [2021-10-28 23:25:09,290 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2086 conditions, 460 events. 88/460 cut-off events. For 2339/2356 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2583 event pairs, 34 based on Foata normal form. 1/457 useless extension candidates. Maximal degree in co-relation 2009. Up to 198 conditions per place. [2021-10-28 23:25:09,300 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 90 selfloop transitions, 19 changer transitions 28/191 dead transitions. [2021-10-28 23:25:09,300 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 191 transitions, 1822 flow [2021-10-28 23:25:09,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-28 23:25:09,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-10-28 23:25:09,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1295 transitions. [2021-10-28 23:25:09,303 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6398221343873518 [2021-10-28 23:25:09,303 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1295 transitions. [2021-10-28 23:25:09,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1295 transitions. [2021-10-28 23:25:09,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:09,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1295 transitions. [2021-10-28 23:25:09,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 58.86363636363637) internal successors, (1295), 22 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:09,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 92.0) internal successors, (2116), 23 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:09,315 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 92.0) internal successors, (2116), 23 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:09,315 INFO L186 Difference]: Start difference. First operand has 230 places, 140 transitions, 1028 flow. Second operand 22 states and 1295 transitions. [2021-10-28 23:25:09,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 191 transitions, 1822 flow [2021-10-28 23:25:09,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 191 transitions, 1607 flow, removed 39 selfloop flow, removed 23 redundant places. [2021-10-28 23:25:09,341 INFO L242 Difference]: Finished difference. Result has 214 places, 151 transitions, 1136 flow [2021-10-28 23:25:09,342 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1136, PETRI_PLACES=214, PETRI_TRANSITIONS=151} [2021-10-28 23:25:09,342 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 132 predicate places. [2021-10-28 23:25:09,342 INFO L470 AbstractCegarLoop]: Abstraction has has 214 places, 151 transitions, 1136 flow [2021-10-28 23:25:09,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:09,343 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:09,343 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] [2021-10-28 23:25:09,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-28 23:25:09,343 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:09,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:09,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1557370829, now seen corresponding path program 14 times [2021-10-28 23:25:09,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:09,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661524085] [2021-10-28 23:25:09,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:09,345 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:09,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:09,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:09,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661524085] [2021-10-28 23:25:09,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661524085] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:09,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:09,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:09,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867477441] [2021-10-28 23:25:09,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:09,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:09,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:09,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:09,466 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:09,466 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 151 transitions, 1136 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:09,467 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:09,467 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:09,467 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:09,861 INFO L129 PetriNetUnfolder]: 85/444 cut-off events. [2021-10-28 23:25:09,862 INFO L130 PetriNetUnfolder]: For 2049/2066 co-relation queries the response was YES. [2021-10-28 23:25:09,866 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2036 conditions, 444 events. 85/444 cut-off events. For 2049/2066 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2445 event pairs, 34 based on Foata normal form. 1/441 useless extension candidates. Maximal degree in co-relation 1963. Up to 196 conditions per place. [2021-10-28 23:25:09,872 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 87 selfloop transitions, 21 changer transitions 29/191 dead transitions. [2021-10-28 23:25:09,872 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 191 transitions, 1810 flow [2021-10-28 23:25:09,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-28 23:25:09,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-28 23:25:09,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1239 transitions. [2021-10-28 23:25:09,875 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6413043478260869 [2021-10-28 23:25:09,875 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1239 transitions. [2021-10-28 23:25:09,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1239 transitions. [2021-10-28 23:25:09,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:09,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1239 transitions. [2021-10-28 23:25:09,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 59.0) internal successors, (1239), 21 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:09,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 92.0) internal successors, (2024), 22 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:09,882 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 92.0) internal successors, (2024), 22 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:09,882 INFO L186 Difference]: Start difference. First operand has 214 places, 151 transitions, 1136 flow. Second operand 21 states and 1239 transitions. [2021-10-28 23:25:09,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 191 transitions, 1810 flow [2021-10-28 23:25:09,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 191 transitions, 1682 flow, removed 58 selfloop flow, removed 11 redundant places. [2021-10-28 23:25:09,908 INFO L242 Difference]: Finished difference. Result has 223 places, 153 transitions, 1207 flow [2021-10-28 23:25:09,909 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1207, PETRI_PLACES=223, PETRI_TRANSITIONS=153} [2021-10-28 23:25:09,909 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 141 predicate places. [2021-10-28 23:25:09,909 INFO L470 AbstractCegarLoop]: Abstraction has has 223 places, 153 transitions, 1207 flow [2021-10-28 23:25:09,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:09,910 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:09,910 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] [2021-10-28 23:25:09,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-10-28 23:25:09,911 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:09,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:09,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1253576493, now seen corresponding path program 15 times [2021-10-28 23:25:09,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:09,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740702146] [2021-10-28 23:25:09,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:09,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:10,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:10,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:10,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740702146] [2021-10-28 23:25:10,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740702146] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:10,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:10,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:10,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498957901] [2021-10-28 23:25:10,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:10,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:10,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:10,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:10,043 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:10,043 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 153 transitions, 1207 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:10,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:10,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:10,044 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:10,351 INFO L129 PetriNetUnfolder]: 80/445 cut-off events. [2021-10-28 23:25:10,351 INFO L130 PetriNetUnfolder]: For 2204/2221 co-relation queries the response was YES. [2021-10-28 23:25:10,356 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2055 conditions, 445 events. 80/445 cut-off events. For 2204/2221 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2498 event pairs, 32 based on Foata normal form. 1/442 useless extension candidates. Maximal degree in co-relation 1978. Up to 201 conditions per place. [2021-10-28 23:25:10,359 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 85 selfloop transitions, 22 changer transitions 25/186 dead transitions. [2021-10-28 23:25:10,359 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 186 transitions, 1816 flow [2021-10-28 23:25:10,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 23:25:10,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-28 23:25:10,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 953 transitions. [2021-10-28 23:25:10,362 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6474184782608695 [2021-10-28 23:25:10,362 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 953 transitions. [2021-10-28 23:25:10,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 953 transitions. [2021-10-28 23:25:10,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:10,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 953 transitions. [2021-10-28 23:25:10,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 59.5625) internal successors, (953), 16 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:10,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:10,368 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:10,368 INFO L186 Difference]: Start difference. First operand has 223 places, 153 transitions, 1207 flow. Second operand 16 states and 953 transitions. [2021-10-28 23:25:10,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 186 transitions, 1816 flow [2021-10-28 23:25:10,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 186 transitions, 1667 flow, removed 49 selfloop flow, removed 18 redundant places. [2021-10-28 23:25:10,396 INFO L242 Difference]: Finished difference. Result has 216 places, 158 transitions, 1256 flow [2021-10-28 23:25:10,396 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1256, PETRI_PLACES=216, PETRI_TRANSITIONS=158} [2021-10-28 23:25:10,397 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 134 predicate places. [2021-10-28 23:25:10,397 INFO L470 AbstractCegarLoop]: Abstraction has has 216 places, 158 transitions, 1256 flow [2021-10-28 23:25:10,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:10,397 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:10,398 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] [2021-10-28 23:25:10,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-10-28 23:25:10,398 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:10,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:10,399 INFO L85 PathProgramCache]: Analyzing trace with hash 968773801, now seen corresponding path program 16 times [2021-10-28 23:25:10,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:10,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560081952] [2021-10-28 23:25:10,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:10,399 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:10,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:10,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:10,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560081952] [2021-10-28 23:25:10,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560081952] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:10,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:10,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:10,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122941605] [2021-10-28 23:25:10,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:10,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:10,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:10,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:10,519 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:10,519 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 158 transitions, 1256 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:10,520 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:10,520 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:10,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:10,845 INFO L129 PetriNetUnfolder]: 73/405 cut-off events. [2021-10-28 23:25:10,845 INFO L130 PetriNetUnfolder]: For 1876/1893 co-relation queries the response was YES. [2021-10-28 23:25:10,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1880 conditions, 405 events. 73/405 cut-off events. For 1876/1893 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2166 event pairs, 32 based on Foata normal form. 1/402 useless extension candidates. Maximal degree in co-relation 1809. Up to 195 conditions per place. [2021-10-28 23:25:10,852 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 82 selfloop transitions, 10 changer transitions 30/176 dead transitions. [2021-10-28 23:25:10,852 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 176 transitions, 1641 flow [2021-10-28 23:25:10,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 23:25:10,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-28 23:25:10,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1060 transitions. [2021-10-28 23:25:10,855 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6400966183574879 [2021-10-28 23:25:10,855 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1060 transitions. [2021-10-28 23:25:10,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1060 transitions. [2021-10-28 23:25:10,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:10,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1060 transitions. [2021-10-28 23:25:10,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.888888888888886) internal successors, (1060), 18 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:10,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:10,861 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:10,862 INFO L186 Difference]: Start difference. First operand has 216 places, 158 transitions, 1256 flow. Second operand 18 states and 1060 transitions. [2021-10-28 23:25:10,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 176 transitions, 1641 flow [2021-10-28 23:25:10,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 176 transitions, 1539 flow, removed 29 selfloop flow, removed 9 redundant places. [2021-10-28 23:25:10,889 INFO L242 Difference]: Finished difference. Result has 224 places, 143 transitions, 1058 flow [2021-10-28 23:25:10,890 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1058, PETRI_PLACES=224, PETRI_TRANSITIONS=143} [2021-10-28 23:25:10,892 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 142 predicate places. [2021-10-28 23:25:10,893 INFO L470 AbstractCegarLoop]: Abstraction has has 224 places, 143 transitions, 1058 flow [2021-10-28 23:25:10,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:10,893 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:10,893 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] [2021-10-28 23:25:10,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-10-28 23:25:10,894 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:10,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:10,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1141183217, now seen corresponding path program 17 times [2021-10-28 23:25:10,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:10,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921583711] [2021-10-28 23:25:10,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:10,895 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:11,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:11,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:11,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921583711] [2021-10-28 23:25:11,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921583711] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:11,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:11,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:11,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974000179] [2021-10-28 23:25:11,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:11,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:11,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:11,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:11,015 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:11,016 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 143 transitions, 1058 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:11,016 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:11,016 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:11,016 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:11,367 INFO L129 PetriNetUnfolder]: 76/416 cut-off events. [2021-10-28 23:25:11,367 INFO L130 PetriNetUnfolder]: For 1938/1955 co-relation queries the response was YES. [2021-10-28 23:25:11,371 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1904 conditions, 416 events. 76/416 cut-off events. For 1938/1955 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2252 event pairs, 32 based on Foata normal form. 1/413 useless extension candidates. Maximal degree in co-relation 1832. Up to 195 conditions per place. [2021-10-28 23:25:11,374 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 80 selfloop transitions, 20 changer transitions 23/177 dead transitions. [2021-10-28 23:25:11,374 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 177 transitions, 1646 flow [2021-10-28 23:25:11,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 23:25:11,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-28 23:25:11,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1065 transitions. [2021-10-28 23:25:11,376 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6431159420289855 [2021-10-28 23:25:11,377 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1065 transitions. [2021-10-28 23:25:11,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1065 transitions. [2021-10-28 23:25:11,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:11,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1065 transitions. [2021-10-28 23:25:11,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 59.166666666666664) internal successors, (1065), 18 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:11,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:11,382 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:11,383 INFO L186 Difference]: Start difference. First operand has 224 places, 143 transitions, 1058 flow. Second operand 18 states and 1065 transitions. [2021-10-28 23:25:11,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 177 transitions, 1646 flow [2021-10-28 23:25:11,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 177 transitions, 1500 flow, removed 25 selfloop flow, removed 18 redundant places. [2021-10-28 23:25:11,408 INFO L242 Difference]: Finished difference. Result has 209 places, 152 transitions, 1171 flow [2021-10-28 23:25:11,408 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=994, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1171, PETRI_PLACES=209, PETRI_TRANSITIONS=152} [2021-10-28 23:25:11,409 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 127 predicate places. [2021-10-28 23:25:11,409 INFO L470 AbstractCegarLoop]: Abstraction has has 209 places, 152 transitions, 1171 flow [2021-10-28 23:25:11,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:11,410 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:11,410 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:25:11,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-10-28 23:25:11,411 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:11,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:11,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1725666035, now seen corresponding path program 18 times [2021-10-28 23:25:11,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:11,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672702650] [2021-10-28 23:25:11,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:11,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:11,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:11,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:11,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672702650] [2021-10-28 23:25:11,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672702650] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:11,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:11,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:11,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521118913] [2021-10-28 23:25:11,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:11,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:11,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:11,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:11,546 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:11,547 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 152 transitions, 1171 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:11,547 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:11,547 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:11,547 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:11,881 INFO L129 PetriNetUnfolder]: 73/428 cut-off events. [2021-10-28 23:25:11,881 INFO L130 PetriNetUnfolder]: For 1757/1774 co-relation queries the response was YES. [2021-10-28 23:25:11,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1875 conditions, 428 events. 73/428 cut-off events. For 1757/1774 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2350 event pairs, 30 based on Foata normal form. 1/425 useless extension candidates. Maximal degree in co-relation 1807. Up to 195 conditions per place. [2021-10-28 23:25:11,888 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 81 selfloop transitions, 22 changer transitions 24/181 dead transitions. [2021-10-28 23:25:11,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 181 transitions, 1693 flow [2021-10-28 23:25:11,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 23:25:11,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-28 23:25:11,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1009 transitions. [2021-10-28 23:25:11,891 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6451406649616368 [2021-10-28 23:25:11,892 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1009 transitions. [2021-10-28 23:25:11,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1009 transitions. [2021-10-28 23:25:11,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:11,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1009 transitions. [2021-10-28 23:25:11,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 59.35294117647059) internal successors, (1009), 17 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:11,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:11,898 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:11,898 INFO L186 Difference]: Start difference. First operand has 209 places, 152 transitions, 1171 flow. Second operand 17 states and 1009 transitions. [2021-10-28 23:25:11,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 181 transitions, 1693 flow [2021-10-28 23:25:11,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 181 transitions, 1612 flow, removed 36 selfloop flow, removed 5 redundant places. [2021-10-28 23:25:11,923 INFO L242 Difference]: Finished difference. Result has 221 places, 156 transitions, 1253 flow [2021-10-28 23:25:11,924 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1121, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1253, PETRI_PLACES=221, PETRI_TRANSITIONS=156} [2021-10-28 23:25:11,924 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 139 predicate places. [2021-10-28 23:25:11,924 INFO L470 AbstractCegarLoop]: Abstraction has has 221 places, 156 transitions, 1253 flow [2021-10-28 23:25:11,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:11,925 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:11,925 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] [2021-10-28 23:25:11,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-10-28 23:25:11,925 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:11,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:11,926 INFO L85 PathProgramCache]: Analyzing trace with hash -100897857, now seen corresponding path program 19 times [2021-10-28 23:25:11,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:11,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691227488] [2021-10-28 23:25:11,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:11,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:12,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:12,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:12,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691227488] [2021-10-28 23:25:12,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691227488] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:12,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:12,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:12,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152901499] [2021-10-28 23:25:12,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:12,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:12,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:12,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:12,043 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:12,044 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 156 transitions, 1253 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:12,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:12,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:12,044 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:12,392 INFO L129 PetriNetUnfolder]: 69/407 cut-off events. [2021-10-28 23:25:12,393 INFO L130 PetriNetUnfolder]: For 1743/1760 co-relation queries the response was YES. [2021-10-28 23:25:12,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1842 conditions, 407 events. 69/407 cut-off events. For 1743/1760 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2203 event pairs, 30 based on Foata normal form. 1/404 useless extension candidates. Maximal degree in co-relation 1768. Up to 195 conditions per place. [2021-10-28 23:25:12,400 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 80 selfloop transitions, 13 changer transitions 29/176 dead transitions. [2021-10-28 23:25:12,400 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 176 transitions, 1663 flow [2021-10-28 23:25:12,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 23:25:12,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-28 23:25:12,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1062 transitions. [2021-10-28 23:25:12,404 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6413043478260869 [2021-10-28 23:25:12,404 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1062 transitions. [2021-10-28 23:25:12,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1062 transitions. [2021-10-28 23:25:12,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:12,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1062 transitions. [2021-10-28 23:25:12,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 59.0) internal successors, (1062), 18 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:12,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:12,411 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:12,412 INFO L186 Difference]: Start difference. First operand has 221 places, 156 transitions, 1253 flow. Second operand 18 states and 1062 transitions. [2021-10-28 23:25:12,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 176 transitions, 1663 flow [2021-10-28 23:25:12,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 176 transitions, 1556 flow, removed 33 selfloop flow, removed 8 redundant places. [2021-10-28 23:25:12,437 INFO L242 Difference]: Finished difference. Result has 230 places, 147 transitions, 1119 flow [2021-10-28 23:25:12,438 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1119, PETRI_PLACES=230, PETRI_TRANSITIONS=147} [2021-10-28 23:25:12,438 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 148 predicate places. [2021-10-28 23:25:12,438 INFO L470 AbstractCegarLoop]: Abstraction has has 230 places, 147 transitions, 1119 flow [2021-10-28 23:25:12,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:12,439 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:12,439 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] [2021-10-28 23:25:12,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-10-28 23:25:12,439 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:12,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:12,440 INFO L85 PathProgramCache]: Analyzing trace with hash 78205775, now seen corresponding path program 20 times [2021-10-28 23:25:12,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:12,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500217034] [2021-10-28 23:25:12,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:12,441 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:12,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:12,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:12,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500217034] [2021-10-28 23:25:12,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500217034] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:12,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:12,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:12,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375994149] [2021-10-28 23:25:12,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:12,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:12,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:12,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:12,593 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:12,594 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 147 transitions, 1119 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:12,594 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:12,594 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:12,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:12,856 INFO L129 PetriNetUnfolder]: 63/346 cut-off events. [2021-10-28 23:25:12,856 INFO L130 PetriNetUnfolder]: For 1575/1592 co-relation queries the response was YES. [2021-10-28 23:25:12,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1605 conditions, 346 events. 63/346 cut-off events. For 1575/1592 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1755 event pairs, 30 based on Foata normal form. 1/343 useless extension candidates. Maximal degree in co-relation 1529. Up to 176 conditions per place. [2021-10-28 23:25:12,862 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 67 selfloop transitions, 0 changer transitions 43/158 dead transitions. [2021-10-28 23:25:12,862 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 158 transitions, 1392 flow [2021-10-28 23:25:12,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 23:25:12,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-28 23:25:12,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 998 transitions. [2021-10-28 23:25:12,865 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6381074168797954 [2021-10-28 23:25:12,865 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 998 transitions. [2021-10-28 23:25:12,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 998 transitions. [2021-10-28 23:25:12,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:12,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 998 transitions. [2021-10-28 23:25:12,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 58.705882352941174) internal successors, (998), 17 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:12,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:12,874 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:12,874 INFO L186 Difference]: Start difference. First operand has 230 places, 147 transitions, 1119 flow. Second operand 17 states and 998 transitions. [2021-10-28 23:25:12,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 158 transitions, 1392 flow [2021-10-28 23:25:12,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 158 transitions, 1288 flow, removed 27 selfloop flow, removed 21 redundant places. [2021-10-28 23:25:12,895 INFO L242 Difference]: Finished difference. Result has 211 places, 115 transitions, 785 flow [2021-10-28 23:25:12,896 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1030, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=785, PETRI_PLACES=211, PETRI_TRANSITIONS=115} [2021-10-28 23:25:12,900 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 129 predicate places. [2021-10-28 23:25:12,901 INFO L470 AbstractCegarLoop]: Abstraction has has 211 places, 115 transitions, 785 flow [2021-10-28 23:25:12,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:12,901 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:12,901 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] [2021-10-28 23:25:12,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-10-28 23:25:12,901 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:12,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:12,902 INFO L85 PathProgramCache]: Analyzing trace with hash 68284651, now seen corresponding path program 7 times [2021-10-28 23:25:12,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:12,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423143253] [2021-10-28 23:25:12,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:12,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:12,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:13,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:13,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:13,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423143253] [2021-10-28 23:25:13,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423143253] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:13,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:13,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:13,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696196697] [2021-10-28 23:25:13,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:13,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:13,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:13,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:13,004 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:13,005 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 115 transitions, 785 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:13,005 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:13,005 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:13,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:13,303 INFO L129 PetriNetUnfolder]: 60/318 cut-off events. [2021-10-28 23:25:13,304 INFO L130 PetriNetUnfolder]: For 1535/1540 co-relation queries the response was YES. [2021-10-28 23:25:13,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1429 conditions, 318 events. 60/318 cut-off events. For 1535/1540 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1548 event pairs, 7 based on Foata normal form. 1/318 useless extension candidates. Maximal degree in co-relation 1365. Up to 55 conditions per place. [2021-10-28 23:25:13,309 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 64 selfloop transitions, 30 changer transitions 25/167 dead transitions. [2021-10-28 23:25:13,309 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 167 transitions, 1607 flow [2021-10-28 23:25:13,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-28 23:25:13,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-10-28 23:25:13,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1288 transitions. [2021-10-28 23:25:13,312 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2021-10-28 23:25:13,312 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1288 transitions. [2021-10-28 23:25:13,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1288 transitions. [2021-10-28 23:25:13,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:13,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1288 transitions. [2021-10-28 23:25:13,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 58.54545454545455) internal successors, (1288), 22 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:13,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 92.0) internal successors, (2116), 23 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:13,320 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 92.0) internal successors, (2116), 23 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:13,320 INFO L186 Difference]: Start difference. First operand has 211 places, 115 transitions, 785 flow. Second operand 22 states and 1288 transitions. [2021-10-28 23:25:13,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 167 transitions, 1607 flow [2021-10-28 23:25:13,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 167 transitions, 1584 flow, removed 6 selfloop flow, removed 9 redundant places. [2021-10-28 23:25:13,337 INFO L242 Difference]: Finished difference. Result has 192 places, 120 transitions, 951 flow [2021-10-28 23:25:13,337 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=951, PETRI_PLACES=192, PETRI_TRANSITIONS=120} [2021-10-28 23:25:13,338 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 110 predicate places. [2021-10-28 23:25:13,338 INFO L470 AbstractCegarLoop]: Abstraction has has 192 places, 120 transitions, 951 flow [2021-10-28 23:25:13,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:13,338 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:13,339 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] [2021-10-28 23:25:13,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-10-28 23:25:13,339 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:13,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:13,340 INFO L85 PathProgramCache]: Analyzing trace with hash -2021917595, now seen corresponding path program 8 times [2021-10-28 23:25:13,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:13,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786083060] [2021-10-28 23:25:13,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:13,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:13,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:13,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:13,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786083060] [2021-10-28 23:25:13,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786083060] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:13,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:13,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:13,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202089034] [2021-10-28 23:25:13,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:13,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:13,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:13,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:13,473 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:13,474 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 120 transitions, 951 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:13,474 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:13,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:13,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:13,748 INFO L129 PetriNetUnfolder]: 55/295 cut-off events. [2021-10-28 23:25:13,749 INFO L130 PetriNetUnfolder]: For 2229/2241 co-relation queries the response was YES. [2021-10-28 23:25:13,752 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1554 conditions, 295 events. 55/295 cut-off events. For 2229/2241 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1358 event pairs, 7 based on Foata normal form. 3/297 useless extension candidates. Maximal degree in co-relation 1483. Up to 60 conditions per place. [2021-10-28 23:25:13,754 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 58 selfloop transitions, 32 changer transitions 21/159 dead transitions. [2021-10-28 23:25:13,754 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 159 transitions, 1703 flow [2021-10-28 23:25:13,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 23:25:13,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-28 23:25:13,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 946 transitions. [2021-10-28 23:25:13,757 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6426630434782609 [2021-10-28 23:25:13,757 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 946 transitions. [2021-10-28 23:25:13,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 946 transitions. [2021-10-28 23:25:13,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:13,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 946 transitions. [2021-10-28 23:25:13,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 59.125) internal successors, (946), 16 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:13,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:13,762 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:13,762 INFO L186 Difference]: Start difference. First operand has 192 places, 120 transitions, 951 flow. Second operand 16 states and 946 transitions. [2021-10-28 23:25:13,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 159 transitions, 1703 flow [2021-10-28 23:25:13,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 159 transitions, 1548 flow, removed 64 selfloop flow, removed 12 redundant places. [2021-10-28 23:25:13,784 INFO L242 Difference]: Finished difference. Result has 190 places, 125 transitions, 1050 flow [2021-10-28 23:25:13,784 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1050, PETRI_PLACES=190, PETRI_TRANSITIONS=125} [2021-10-28 23:25:13,785 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 108 predicate places. [2021-10-28 23:25:13,785 INFO L470 AbstractCegarLoop]: Abstraction has has 190 places, 125 transitions, 1050 flow [2021-10-28 23:25:13,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:13,785 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:13,786 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] [2021-10-28 23:25:13,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-10-28 23:25:13,786 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:13,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:13,787 INFO L85 PathProgramCache]: Analyzing trace with hash 13810053, now seen corresponding path program 9 times [2021-10-28 23:25:13,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:13,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793327123] [2021-10-28 23:25:13,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:13,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:13,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:13,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:13,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793327123] [2021-10-28 23:25:13,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793327123] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:13,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:13,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:13,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479576083] [2021-10-28 23:25:13,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:13,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:13,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:13,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:13,910 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:13,914 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 125 transitions, 1050 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:13,914 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:13,915 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:13,915 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:14,165 INFO L129 PetriNetUnfolder]: 48/273 cut-off events. [2021-10-28 23:25:14,165 INFO L130 PetriNetUnfolder]: For 1861/1877 co-relation queries the response was YES. [2021-10-28 23:25:14,167 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1396 conditions, 273 events. 48/273 cut-off events. For 1861/1877 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1197 event pairs, 7 based on Foata normal form. 7/279 useless extension candidates. Maximal degree in co-relation 1327. Up to 54 conditions per place. [2021-10-28 23:25:14,168 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 54 selfloop transitions, 20 changer transitions 27/149 dead transitions. [2021-10-28 23:25:14,168 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 149 transitions, 1512 flow [2021-10-28 23:25:14,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 23:25:14,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-28 23:25:14,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1053 transitions. [2021-10-28 23:25:14,176 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6358695652173914 [2021-10-28 23:25:14,176 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1053 transitions. [2021-10-28 23:25:14,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1053 transitions. [2021-10-28 23:25:14,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:14,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1053 transitions. [2021-10-28 23:25:14,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.5) internal successors, (1053), 18 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:14,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:14,182 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:14,183 INFO L186 Difference]: Start difference. First operand has 190 places, 125 transitions, 1050 flow. Second operand 18 states and 1053 transitions. [2021-10-28 23:25:14,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 149 transitions, 1512 flow [2021-10-28 23:25:14,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 149 transitions, 1378 flow, removed 35 selfloop flow, removed 9 redundant places. [2021-10-28 23:25:14,205 INFO L242 Difference]: Finished difference. Result has 198 places, 110 transitions, 803 flow [2021-10-28 23:25:14,205 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=803, PETRI_PLACES=198, PETRI_TRANSITIONS=110} [2021-10-28 23:25:14,205 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 116 predicate places. [2021-10-28 23:25:14,206 INFO L470 AbstractCegarLoop]: Abstraction has has 198 places, 110 transitions, 803 flow [2021-10-28 23:25:14,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:14,206 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:14,206 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] [2021-10-28 23:25:14,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-10-28 23:25:14,207 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:14,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:14,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1899785425, now seen corresponding path program 10 times [2021-10-28 23:25:14,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:14,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788887453] [2021-10-28 23:25:14,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:14,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:14,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:14,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:14,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:14,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788887453] [2021-10-28 23:25:14,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788887453] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:14,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:14,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:14,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327043746] [2021-10-28 23:25:14,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:14,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:14,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:14,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:14,340 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:14,341 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 110 transitions, 803 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:14,341 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:14,341 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:14,341 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:14,662 INFO L129 PetriNetUnfolder]: 51/269 cut-off events. [2021-10-28 23:25:14,662 INFO L130 PetriNetUnfolder]: For 1875/1886 co-relation queries the response was YES. [2021-10-28 23:25:14,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1411 conditions, 269 events. 51/269 cut-off events. For 1875/1886 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1143 event pairs, 14 based on Foata normal form. 3/270 useless extension candidates. Maximal degree in co-relation 1341. Up to 69 conditions per place. [2021-10-28 23:25:14,666 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 49 selfloop transitions, 28 changer transitions 19/144 dead transitions. [2021-10-28 23:25:14,667 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 144 transitions, 1424 flow [2021-10-28 23:25:14,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 23:25:14,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-28 23:25:14,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1061 transitions. [2021-10-28 23:25:14,669 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6407004830917874 [2021-10-28 23:25:14,669 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1061 transitions. [2021-10-28 23:25:14,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1061 transitions. [2021-10-28 23:25:14,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:14,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1061 transitions. [2021-10-28 23:25:14,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.94444444444444) internal successors, (1061), 18 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:14,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:14,677 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:14,677 INFO L186 Difference]: Start difference. First operand has 198 places, 110 transitions, 803 flow. Second operand 18 states and 1061 transitions. [2021-10-28 23:25:14,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 144 transitions, 1424 flow [2021-10-28 23:25:14,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 144 transitions, 1249 flow, removed 32 selfloop flow, removed 19 redundant places. [2021-10-28 23:25:14,695 INFO L242 Difference]: Finished difference. Result has 182 places, 119 transitions, 909 flow [2021-10-28 23:25:14,696 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=909, PETRI_PLACES=182, PETRI_TRANSITIONS=119} [2021-10-28 23:25:14,696 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 100 predicate places. [2021-10-28 23:25:14,696 INFO L470 AbstractCegarLoop]: Abstraction has has 182 places, 119 transitions, 909 flow [2021-10-28 23:25:14,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:14,697 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:14,697 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] [2021-10-28 23:25:14,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-10-28 23:25:14,697 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:14,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:14,698 INFO L85 PathProgramCache]: Analyzing trace with hash -138731753, now seen corresponding path program 11 times [2021-10-28 23:25:14,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:14,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395415906] [2021-10-28 23:25:14,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:14,699 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:14,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:14,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:14,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395415906] [2021-10-28 23:25:14,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395415906] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:14,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:14,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:14,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602031534] [2021-10-28 23:25:14,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:14,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:14,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:14,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:14,831 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:14,832 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 119 transitions, 909 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:14,832 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:14,832 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:14,832 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:15,097 INFO L129 PetriNetUnfolder]: 48/264 cut-off events. [2021-10-28 23:25:15,097 INFO L130 PetriNetUnfolder]: For 1439/1450 co-relation queries the response was YES. [2021-10-28 23:25:15,098 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1319 conditions, 264 events. 48/264 cut-off events. For 1439/1450 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1138 event pairs, 12 based on Foata normal form. 3/265 useless extension candidates. Maximal degree in co-relation 1254. Up to 67 conditions per place. [2021-10-28 23:25:15,100 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 50 selfloop transitions, 30 changer transitions 20/148 dead transitions. [2021-10-28 23:25:15,100 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 148 transitions, 1461 flow [2021-10-28 23:25:15,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 23:25:15,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-28 23:25:15,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1005 transitions. [2021-10-28 23:25:15,103 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6425831202046036 [2021-10-28 23:25:15,103 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1005 transitions. [2021-10-28 23:25:15,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1005 transitions. [2021-10-28 23:25:15,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:15,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1005 transitions. [2021-10-28 23:25:15,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 59.11764705882353) internal successors, (1005), 17 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:15,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:15,108 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:15,109 INFO L186 Difference]: Start difference. First operand has 182 places, 119 transitions, 909 flow. Second operand 17 states and 1005 transitions. [2021-10-28 23:25:15,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 148 transitions, 1461 flow [2021-10-28 23:25:15,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 148 transitions, 1378 flow, removed 33 selfloop flow, removed 6 redundant places. [2021-10-28 23:25:15,127 INFO L242 Difference]: Finished difference. Result has 193 places, 123 transitions, 1008 flow [2021-10-28 23:25:15,127 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1008, PETRI_PLACES=193, PETRI_TRANSITIONS=123} [2021-10-28 23:25:15,127 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 111 predicate places. [2021-10-28 23:25:15,128 INFO L470 AbstractCegarLoop]: Abstraction has has 193 places, 123 transitions, 1008 flow [2021-10-28 23:25:15,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:15,128 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:15,128 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] [2021-10-28 23:25:15,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-10-28 23:25:15,129 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:15,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:15,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1749198423, now seen corresponding path program 12 times [2021-10-28 23:25:15,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:15,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342901517] [2021-10-28 23:25:15,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:15,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:15,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:15,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:15,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342901517] [2021-10-28 23:25:15,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342901517] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:15,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:15,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:15,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858881113] [2021-10-28 23:25:15,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:15,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:15,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:15,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:15,249 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:15,250 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 123 transitions, 1008 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:15,250 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:15,250 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:15,250 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:15,487 INFO L129 PetriNetUnfolder]: 44/258 cut-off events. [2021-10-28 23:25:15,487 INFO L130 PetriNetUnfolder]: For 1499/1505 co-relation queries the response was YES. [2021-10-28 23:25:15,490 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1291 conditions, 258 events. 44/258 cut-off events. For 1499/1505 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1089 event pairs, 14 based on Foata normal form. 1/257 useless extension candidates. Maximal degree in co-relation 1221. Up to 66 conditions per place. [2021-10-28 23:25:15,492 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 50 selfloop transitions, 20 changer transitions 26/144 dead transitions. [2021-10-28 23:25:15,492 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 144 transitions, 1439 flow [2021-10-28 23:25:15,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 23:25:15,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-28 23:25:15,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1002 transitions. [2021-10-28 23:25:15,494 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6406649616368286 [2021-10-28 23:25:15,494 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1002 transitions. [2021-10-28 23:25:15,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1002 transitions. [2021-10-28 23:25:15,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:15,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1002 transitions. [2021-10-28 23:25:15,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 58.94117647058823) internal successors, (1002), 17 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:15,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:15,499 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:15,500 INFO L186 Difference]: Start difference. First operand has 193 places, 123 transitions, 1008 flow. Second operand 17 states and 1002 transitions. [2021-10-28 23:25:15,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 144 transitions, 1439 flow [2021-10-28 23:25:15,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 144 transitions, 1346 flow, removed 22 selfloop flow, removed 8 redundant places. [2021-10-28 23:25:15,522 INFO L242 Difference]: Finished difference. Result has 200 places, 114 transitions, 862 flow [2021-10-28 23:25:15,523 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=862, PETRI_PLACES=200, PETRI_TRANSITIONS=114} [2021-10-28 23:25:15,523 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 118 predicate places. [2021-10-28 23:25:15,523 INFO L470 AbstractCegarLoop]: Abstraction has has 200 places, 114 transitions, 862 flow [2021-10-28 23:25:15,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:15,524 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:15,524 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:25:15,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-10-28 23:25:15,524 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:15,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:15,525 INFO L85 PathProgramCache]: Analyzing trace with hash 538441871, now seen corresponding path program 13 times [2021-10-28 23:25:15,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:15,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140504372] [2021-10-28 23:25:15,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:15,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:15,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:15,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:15,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140504372] [2021-10-28 23:25:15,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140504372] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:15,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:15,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:15,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127902417] [2021-10-28 23:25:15,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:15,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:15,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:15,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:15,650 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:15,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 114 transitions, 862 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:15,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:15,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:15,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:15,942 INFO L129 PetriNetUnfolder]: 37/223 cut-off events. [2021-10-28 23:25:15,942 INFO L130 PetriNetUnfolder]: For 1373/1384 co-relation queries the response was YES. [2021-10-28 23:25:15,945 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1079 conditions, 223 events. 37/223 cut-off events. For 1373/1384 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 828 event pairs, 12 based on Foata normal form. 3/224 useless extension candidates. Maximal degree in co-relation 1008. Up to 63 conditions per place. [2021-10-28 23:25:15,946 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 40 selfloop transitions, 9 changer transitions 29/126 dead transitions. [2021-10-28 23:25:15,946 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 126 transitions, 1142 flow [2021-10-28 23:25:15,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 23:25:15,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-28 23:25:15,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1049 transitions. [2021-10-28 23:25:15,948 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6334541062801933 [2021-10-28 23:25:15,948 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1049 transitions. [2021-10-28 23:25:15,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1049 transitions. [2021-10-28 23:25:15,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:15,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1049 transitions. [2021-10-28 23:25:15,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.27777777777778) internal successors, (1049), 18 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:15,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:15,953 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:15,954 INFO L186 Difference]: Start difference. First operand has 200 places, 114 transitions, 862 flow. Second operand 18 states and 1049 transitions. [2021-10-28 23:25:15,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 126 transitions, 1142 flow [2021-10-28 23:25:15,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 126 transitions, 1010 flow, removed 26 selfloop flow, removed 21 redundant places. [2021-10-28 23:25:15,970 INFO L242 Difference]: Finished difference. Result has 185 places, 94 transitions, 552 flow [2021-10-28 23:25:15,971 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=552, PETRI_PLACES=185, PETRI_TRANSITIONS=94} [2021-10-28 23:25:15,971 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 103 predicate places. [2021-10-28 23:25:15,971 INFO L470 AbstractCegarLoop]: Abstraction has has 185 places, 94 transitions, 552 flow [2021-10-28 23:25:15,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:15,972 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:15,972 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] [2021-10-28 23:25:15,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-10-28 23:25:15,972 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:15,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:15,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1243091695, now seen corresponding path program 14 times [2021-10-28 23:25:15,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:15,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198700564] [2021-10-28 23:25:15,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:15,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:16,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:16,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:16,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198700564] [2021-10-28 23:25:16,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198700564] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:16,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:16,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:16,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884159038] [2021-10-28 23:25:16,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:16,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:16,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:16,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:16,105 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:16,105 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 94 transitions, 552 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:16,106 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:16,106 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:16,106 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:16,408 INFO L129 PetriNetUnfolder]: 31/205 cut-off events. [2021-10-28 23:25:16,408 INFO L130 PetriNetUnfolder]: For 921/922 co-relation queries the response was YES. [2021-10-28 23:25:16,411 INFO L84 FinitePrefix]: Finished finitePrefix Result has 893 conditions, 205 events. 31/205 cut-off events. For 921/922 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 688 event pairs, 4 based on Foata normal form. 1/206 useless extension candidates. Maximal degree in co-relation 830. Up to 29 conditions per place. [2021-10-28 23:25:16,412 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 36 selfloop transitions, 21 changer transitions 25/130 dead transitions. [2021-10-28 23:25:16,412 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 130 transitions, 1118 flow [2021-10-28 23:25:16,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-28 23:25:16,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-28 23:25:16,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1228 transitions. [2021-10-28 23:25:16,415 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6356107660455487 [2021-10-28 23:25:16,415 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1228 transitions. [2021-10-28 23:25:16,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1228 transitions. [2021-10-28 23:25:16,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:16,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1228 transitions. [2021-10-28 23:25:16,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 58.476190476190474) internal successors, (1228), 21 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:16,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 92.0) internal successors, (2024), 22 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:16,421 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 92.0) internal successors, (2024), 22 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:16,421 INFO L186 Difference]: Start difference. First operand has 185 places, 94 transitions, 552 flow. Second operand 21 states and 1228 transitions. [2021-10-28 23:25:16,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 130 transitions, 1118 flow [2021-10-28 23:25:16,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 130 transitions, 900 flow, removed 33 selfloop flow, removed 24 redundant places. [2021-10-28 23:25:16,432 INFO L242 Difference]: Finished difference. Result has 166 places, 96 transitions, 552 flow [2021-10-28 23:25:16,432 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=552, PETRI_PLACES=166, PETRI_TRANSITIONS=96} [2021-10-28 23:25:16,432 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 84 predicate places. [2021-10-28 23:25:16,433 INFO L470 AbstractCegarLoop]: Abstraction has has 166 places, 96 transitions, 552 flow [2021-10-28 23:25:16,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:16,434 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:16,434 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] [2021-10-28 23:25:16,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-10-28 23:25:16,435 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:16,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:16,436 INFO L85 PathProgramCache]: Analyzing trace with hash 864875245, now seen corresponding path program 15 times [2021-10-28 23:25:16,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:16,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076483972] [2021-10-28 23:25:16,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:16,437 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:16,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:16,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:16,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076483972] [2021-10-28 23:25:16,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076483972] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:16,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:16,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:16,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153683030] [2021-10-28 23:25:16,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:16,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:16,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:16,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:16,564 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:16,565 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 96 transitions, 552 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:16,565 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:16,565 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:16,565 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:16,814 INFO L129 PetriNetUnfolder]: 26/204 cut-off events. [2021-10-28 23:25:16,814 INFO L130 PetriNetUnfolder]: For 780/781 co-relation queries the response was YES. [2021-10-28 23:25:16,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 853 conditions, 204 events. 26/204 cut-off events. For 780/781 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 715 event pairs, 2 based on Foata normal form. 1/205 useless extension candidates. Maximal degree in co-relation 796. Up to 33 conditions per place. [2021-10-28 23:25:16,818 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 34 selfloop transitions, 22 changer transitions 21/125 dead transitions. [2021-10-28 23:25:16,818 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 125 transitions, 1024 flow [2021-10-28 23:25:16,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 23:25:16,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-28 23:25:16,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 942 transitions. [2021-10-28 23:25:16,820 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6399456521739131 [2021-10-28 23:25:16,820 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 942 transitions. [2021-10-28 23:25:16,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 942 transitions. [2021-10-28 23:25:16,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:16,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 942 transitions. [2021-10-28 23:25:16,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 58.875) internal successors, (942), 16 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:16,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:16,827 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:16,827 INFO L186 Difference]: Start difference. First operand has 166 places, 96 transitions, 552 flow. Second operand 16 states and 942 transitions. [2021-10-28 23:25:16,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 125 transitions, 1024 flow [2021-10-28 23:25:16,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 125 transitions, 877 flow, removed 47 selfloop flow, removed 17 redundant places. [2021-10-28 23:25:16,838 INFO L242 Difference]: Finished difference. Result has 160 places, 101 transitions, 600 flow [2021-10-28 23:25:16,838 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=600, PETRI_PLACES=160, PETRI_TRANSITIONS=101} [2021-10-28 23:25:16,838 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 78 predicate places. [2021-10-28 23:25:16,838 INFO L470 AbstractCegarLoop]: Abstraction has has 160 places, 101 transitions, 600 flow [2021-10-28 23:25:16,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:16,839 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:16,839 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] [2021-10-28 23:25:16,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-10-28 23:25:16,840 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:16,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:16,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1157209939, now seen corresponding path program 16 times [2021-10-28 23:25:16,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:16,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742311966] [2021-10-28 23:25:16,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:16,841 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:16,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:16,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:16,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742311966] [2021-10-28 23:25:16,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742311966] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:16,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:16,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:16,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803756621] [2021-10-28 23:25:16,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:16,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:16,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:16,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:16,971 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:16,972 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 101 transitions, 600 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:16,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:16,972 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:16,972 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:17,226 INFO L129 PetriNetUnfolder]: 19/172 cut-off events. [2021-10-28 23:25:17,227 INFO L130 PetriNetUnfolder]: For 478/479 co-relation queries the response was YES. [2021-10-28 23:25:17,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 172 events. 19/172 cut-off events. For 478/479 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 490 event pairs, 2 based on Foata normal form. 1/173 useless extension candidates. Maximal degree in co-relation 635. Up to 27 conditions per place. [2021-10-28 23:25:17,228 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 31 selfloop transitions, 10 changer transitions 26/115 dead transitions. [2021-10-28 23:25:17,229 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 115 transitions, 857 flow [2021-10-28 23:25:17,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 23:25:17,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-28 23:25:17,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1049 transitions. [2021-10-28 23:25:17,230 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6334541062801933 [2021-10-28 23:25:17,231 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1049 transitions. [2021-10-28 23:25:17,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1049 transitions. [2021-10-28 23:25:17,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:17,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1049 transitions. [2021-10-28 23:25:17,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.27777777777778) internal successors, (1049), 18 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:17,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:17,236 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:17,236 INFO L186 Difference]: Start difference. First operand has 160 places, 101 transitions, 600 flow. Second operand 18 states and 1049 transitions. [2021-10-28 23:25:17,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 115 transitions, 857 flow [2021-10-28 23:25:17,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 115 transitions, 759 flow, removed 27 selfloop flow, removed 9 redundant places. [2021-10-28 23:25:17,245 INFO L242 Difference]: Finished difference. Result has 168 places, 86 transitions, 406 flow [2021-10-28 23:25:17,245 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=406, PETRI_PLACES=168, PETRI_TRANSITIONS=86} [2021-10-28 23:25:17,245 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 86 predicate places. [2021-10-28 23:25:17,245 INFO L470 AbstractCegarLoop]: Abstraction has has 168 places, 86 transitions, 406 flow [2021-10-28 23:25:17,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:17,246 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:17,246 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] [2021-10-28 23:25:17,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-10-28 23:25:17,246 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:17,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:17,247 INFO L85 PathProgramCache]: Analyzing trace with hash 2082622499, now seen corresponding path program 17 times [2021-10-28 23:25:17,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:17,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997976320] [2021-10-28 23:25:17,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:17,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:17,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:17,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:17,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997976320] [2021-10-28 23:25:17,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997976320] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:17,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:17,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:17,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693502584] [2021-10-28 23:25:17,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:17,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:17,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:17,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:17,364 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:17,365 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 86 transitions, 406 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:17,365 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:17,365 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:17,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:17,617 INFO L129 PetriNetUnfolder]: 22/172 cut-off events. [2021-10-28 23:25:17,617 INFO L130 PetriNetUnfolder]: For 537/538 co-relation queries the response was YES. [2021-10-28 23:25:17,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 172 events. 22/172 cut-off events. For 537/538 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 490 event pairs, 2 based on Foata normal form. 1/173 useless extension candidates. Maximal degree in co-relation 644. Up to 27 conditions per place. [2021-10-28 23:25:17,620 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 29 selfloop transitions, 20 changer transitions 19/116 dead transitions. [2021-10-28 23:25:17,620 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 116 transitions, 858 flow [2021-10-28 23:25:17,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 23:25:17,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-28 23:25:17,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1054 transitions. [2021-10-28 23:25:17,623 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6364734299516909 [2021-10-28 23:25:17,623 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1054 transitions. [2021-10-28 23:25:17,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1054 transitions. [2021-10-28 23:25:17,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:17,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1054 transitions. [2021-10-28 23:25:17,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.55555555555556) internal successors, (1054), 18 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:17,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:17,628 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:17,629 INFO L186 Difference]: Start difference. First operand has 168 places, 86 transitions, 406 flow. Second operand 18 states and 1054 transitions. [2021-10-28 23:25:17,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 116 transitions, 858 flow [2021-10-28 23:25:17,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 116 transitions, 712 flow, removed 25 selfloop flow, removed 18 redundant places. [2021-10-28 23:25:17,636 INFO L242 Difference]: Finished difference. Result has 153 places, 95 transitions, 517 flow [2021-10-28 23:25:17,636 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=517, PETRI_PLACES=153, PETRI_TRANSITIONS=95} [2021-10-28 23:25:17,637 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 71 predicate places. [2021-10-28 23:25:17,637 INFO L470 AbstractCegarLoop]: Abstraction has has 153 places, 95 transitions, 517 flow [2021-10-28 23:25:17,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:17,637 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:17,638 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:25:17,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-10-28 23:25:17,638 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:17,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:17,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1324750551, now seen corresponding path program 18 times [2021-10-28 23:25:17,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:17,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551899328] [2021-10-28 23:25:17,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:17,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:17,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:17,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:17,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551899328] [2021-10-28 23:25:17,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551899328] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:17,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:17,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:17,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96542859] [2021-10-28 23:25:17,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:17,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:17,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:17,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:17,759 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:17,760 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 95 transitions, 517 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:17,760 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:17,760 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:17,760 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:18,060 INFO L129 PetriNetUnfolder]: 19/181 cut-off events. [2021-10-28 23:25:18,061 INFO L130 PetriNetUnfolder]: For 374/375 co-relation queries the response was YES. [2021-10-28 23:25:18,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 181 events. 19/181 cut-off events. For 374/375 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 555 event pairs, 0 based on Foata normal form. 1/182 useless extension candidates. Maximal degree in co-relation 619. Up to 27 conditions per place. [2021-10-28 23:25:18,063 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 30 selfloop transitions, 22 changer transitions 20/120 dead transitions. [2021-10-28 23:25:18,063 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 120 transitions, 905 flow [2021-10-28 23:25:18,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 23:25:18,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-28 23:25:18,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 998 transitions. [2021-10-28 23:25:18,066 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6381074168797954 [2021-10-28 23:25:18,066 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 998 transitions. [2021-10-28 23:25:18,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 998 transitions. [2021-10-28 23:25:18,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:18,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 998 transitions. [2021-10-28 23:25:18,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 58.705882352941174) internal successors, (998), 17 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:18,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:18,071 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:18,071 INFO L186 Difference]: Start difference. First operand has 153 places, 95 transitions, 517 flow. Second operand 17 states and 998 transitions. [2021-10-28 23:25:18,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 120 transitions, 905 flow [2021-10-28 23:25:18,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 120 transitions, 826 flow, removed 35 selfloop flow, removed 5 redundant places. [2021-10-28 23:25:18,079 INFO L242 Difference]: Finished difference. Result has 165 places, 99 transitions, 599 flow [2021-10-28 23:25:18,079 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=599, PETRI_PLACES=165, PETRI_TRANSITIONS=99} [2021-10-28 23:25:18,079 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 83 predicate places. [2021-10-28 23:25:18,080 INFO L470 AbstractCegarLoop]: Abstraction has has 165 places, 99 transitions, 599 flow [2021-10-28 23:25:18,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:18,080 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:18,080 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] [2021-10-28 23:25:18,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-10-28 23:25:18,082 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:18,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:18,082 INFO L85 PathProgramCache]: Analyzing trace with hash -720882079, now seen corresponding path program 19 times [2021-10-28 23:25:18,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:18,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187432258] [2021-10-28 23:25:18,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:18,083 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:18,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:18,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:18,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187432258] [2021-10-28 23:25:18,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187432258] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:18,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:18,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:18,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28438074] [2021-10-28 23:25:18,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:18,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:18,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:18,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:18,194 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:18,195 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 99 transitions, 599 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:18,195 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:18,195 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:18,195 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:18,480 INFO L129 PetriNetUnfolder]: 15/168 cut-off events. [2021-10-28 23:25:18,480 INFO L130 PetriNetUnfolder]: For 366/367 co-relation queries the response was YES. [2021-10-28 23:25:18,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 649 conditions, 168 events. 15/168 cut-off events. For 366/367 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 474 event pairs, 0 based on Foata normal form. 1/169 useless extension candidates. Maximal degree in co-relation 594. Up to 27 conditions per place. [2021-10-28 23:25:18,482 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 29 selfloop transitions, 13 changer transitions 25/115 dead transitions. [2021-10-28 23:25:18,483 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 115 transitions, 883 flow [2021-10-28 23:25:18,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 23:25:18,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-28 23:25:18,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1051 transitions. [2021-10-28 23:25:18,485 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6346618357487923 [2021-10-28 23:25:18,485 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1051 transitions. [2021-10-28 23:25:18,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1051 transitions. [2021-10-28 23:25:18,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:18,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1051 transitions. [2021-10-28 23:25:18,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.388888888888886) internal successors, (1051), 18 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:18,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:18,491 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:18,491 INFO L186 Difference]: Start difference. First operand has 165 places, 99 transitions, 599 flow. Second operand 18 states and 1051 transitions. [2021-10-28 23:25:18,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 115 transitions, 883 flow [2021-10-28 23:25:18,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 115 transitions, 788 flow, removed 27 selfloop flow, removed 9 redundant places. [2021-10-28 23:25:18,500 INFO L242 Difference]: Finished difference. Result has 173 places, 90 transitions, 471 flow [2021-10-28 23:25:18,500 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=471, PETRI_PLACES=173, PETRI_TRANSITIONS=90} [2021-10-28 23:25:18,501 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 91 predicate places. [2021-10-28 23:25:18,501 INFO L470 AbstractCegarLoop]: Abstraction has has 173 places, 90 transitions, 471 flow [2021-10-28 23:25:18,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:18,502 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:25:18,502 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] [2021-10-28 23:25:18,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-10-28 23:25:18,502 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 23:25:18,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:25:18,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1087779575, now seen corresponding path program 20 times [2021-10-28 23:25:18,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:25:18,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480347648] [2021-10-28 23:25:18,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:25:18,504 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:25:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:25:18,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:25:18,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:25:18,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480347648] [2021-10-28 23:25:18,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480347648] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:25:18,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:25:18,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:25:18,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285956149] [2021-10-28 23:25:18,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:25:18,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:25:18,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:25:18,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:25:18,632 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-28 23:25:18,633 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 90 transitions, 471 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:18,633 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:25:18,633 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-28 23:25:18,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:25:18,838 INFO L129 PetriNetUnfolder]: 9/112 cut-off events. [2021-10-28 23:25:18,838 INFO L130 PetriNetUnfolder]: For 223/224 co-relation queries the response was YES. [2021-10-28 23:25:18,839 INFO L84 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 112 events. 9/112 cut-off events. For 223/224 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 219 event pairs, 0 based on Foata normal form. 1/113 useless extension candidates. Maximal degree in co-relation 369. Up to 12 conditions per place. [2021-10-28 23:25:18,839 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 0 selfloop transitions, 0 changer transitions 84/84 dead transitions. [2021-10-28 23:25:18,840 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 84 transitions, 570 flow [2021-10-28 23:25:18,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 23:25:18,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-28 23:25:18,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 972 transitions. [2021-10-28 23:25:18,841 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6214833759590793 [2021-10-28 23:25:18,841 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 972 transitions. [2021-10-28 23:25:18,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 972 transitions. [2021-10-28 23:25:18,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:25:18,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 972 transitions. [2021-10-28 23:25:18,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 57.1764705882353) internal successors, (972), 17 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:18,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:18,846 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:18,846 INFO L186 Difference]: Start difference. First operand has 173 places, 90 transitions, 471 flow. Second operand 17 states and 972 transitions. [2021-10-28 23:25:18,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 84 transitions, 570 flow [2021-10-28 23:25:18,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 84 transitions, 476 flow, removed 22 selfloop flow, removed 20 redundant places. [2021-10-28 23:25:18,851 INFO L242 Difference]: Finished difference. Result has 142 places, 0 transitions, 0 flow [2021-10-28 23:25:18,852 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=0, PETRI_PLACES=142, PETRI_TRANSITIONS=0} [2021-10-28 23:25:18,852 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 60 predicate places. [2021-10-28 23:25:18,852 INFO L470 AbstractCegarLoop]: Abstraction has has 142 places, 0 transitions, 0 flow [2021-10-28 23:25:18,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:25:18,855 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:25:18,856 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 23:25:18,856 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 23:25:18,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-10-28 23:25:18,860 INFO L731 BasicCegarLoop]: Path program histogram: [20, 20, 2, 2, 2, 1] [2021-10-28 23:25:18,865 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 23:25:18,865 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:25:18,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:25:18 BasicIcfg [2021-10-28 23:25:18,878 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:25:18,879 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:25:18,879 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:25:18,879 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:25:18,880 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:24:54" (3/4) ... [2021-10-28 23:25:18,884 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:25:18,890 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-28 23:25:18,891 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-28 23:25:18,897 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-28 23:25:18,898 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 23:25:18,898 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:25:18,898 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:25:18,943 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483de3f9-82a6-452c-8e5b-1f21d0a43c75/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:25:18,943 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:25:18,945 INFO L168 Benchmark]: Toolchain (without parser) took 25519.17 ms. Allocated memory was 92.3 MB in the beginning and 268.4 MB in the end (delta: 176.2 MB). Free memory was 57.5 MB in the beginning and 186.3 MB in the end (delta: -128.8 MB). Peak memory consumption was 45.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:25:18,946 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 92.3 MB. Free memory was 65.0 MB in the beginning and 65.0 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:25:18,947 INFO L168 Benchmark]: CACSL2BoogieTranslator took 407.72 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 57.2 MB in the beginning and 85.6 MB in the end (delta: -28.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:25:18,949 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.67 ms. Allocated memory is still 111.1 MB. Free memory was 85.6 MB in the beginning and 84.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:25:18,949 INFO L168 Benchmark]: Boogie Preprocessor took 58.16 ms. Allocated memory is still 111.1 MB. Free memory was 84.2 MB in the beginning and 82.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:25:18,949 INFO L168 Benchmark]: RCFGBuilder took 534.47 ms. Allocated memory is still 111.1 MB. Free memory was 82.9 MB in the beginning and 71.0 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:25:18,950 INFO L168 Benchmark]: TraceAbstraction took 24402.21 ms. Allocated memory was 111.1 MB in the beginning and 268.4 MB in the end (delta: 157.3 MB). Free memory was 70.4 MB in the beginning and 188.4 MB in the end (delta: -118.0 MB). Peak memory consumption was 40.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:25:18,950 INFO L168 Benchmark]: Witness Printer took 64.39 ms. Allocated memory is still 268.4 MB. Free memory was 188.4 MB in the beginning and 186.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:25:18,954 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 92.3 MB. Free memory was 65.0 MB in the beginning and 65.0 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 407.72 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 57.2 MB in the beginning and 85.6 MB in the end (delta: -28.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.67 ms. Allocated memory is still 111.1 MB. Free memory was 85.6 MB in the beginning and 84.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.16 ms. Allocated memory is still 111.1 MB. Free memory was 84.2 MB in the beginning and 82.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 534.47 ms. Allocated memory is still 111.1 MB. Free memory was 82.9 MB in the beginning and 71.0 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 24402.21 ms. Allocated memory was 111.1 MB in the beginning and 268.4 MB in the end (delta: 157.3 MB). Free memory was 70.4 MB in the beginning and 188.4 MB in the end (delta: -118.0 MB). Peak memory consumption was 40.5 MB. Max. memory is 16.1 GB. * Witness Printer took 64.39 ms. Allocated memory is still 268.4 MB. Free memory was 188.4 MB in the beginning and 186.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 69]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 112 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 24.2s, OverallIterations: 47, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 17.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1806 SDtfs, 1738 SDslu, 7675 SDs, 0 SdLazy, 5672 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1021 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 878 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3636 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1483occurred in iteration=20, InterpolantAutomatonStates: 803, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 3188 NumberOfCodeBlocks, 3188 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 3141 ConstructedInterpolants, 0 QuantifiedInterpolants, 11811 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 47 InterpolantComputations, 47 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 23:25:19,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483de3f9-82a6-452c-8e5b-1f21d0a43c75/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...