./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47956a2a-5ada-4bf7-b0fa-1cf0c26de2df/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47956a2a-5ada-4bf7-b0fa-1cf0c26de2df/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47956a2a-5ada-4bf7-b0fa-1cf0c26de2df/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47956a2a-5ada-4bf7-b0fa-1cf0c26de2df/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47956a2a-5ada-4bf7-b0fa-1cf0c26de2df/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47956a2a-5ada-4bf7-b0fa-1cf0c26de2df/bin/uautomizer-Dbtcem3rbc --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 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:38:38,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:38:38,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:38:38,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:38:38,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:38:38,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:38:38,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:38:38,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:38:38,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:38:38,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:38:38,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:38:38,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:38:38,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:38:38,449 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:38:38,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:38:38,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:38:38,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:38:38,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:38:38,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:38:38,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:38:38,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:38:38,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:38:38,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:38:38,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:38:38,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:38:38,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:38:38,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:38:38,476 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:38:38,476 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:38:38,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:38:38,479 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:38:38,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:38:38,481 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:38:38,482 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:38:38,484 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:38:38,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:38:38,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:38:38,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:38:38,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:38:38,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:38:38,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:38:38,491 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47956a2a-5ada-4bf7-b0fa-1cf0c26de2df/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:38:38,520 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:38:38,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:38:38,521 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:38:38,522 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:38:38,523 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:38:38,523 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:38:38,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:38:38,525 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:38:38,525 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:38:38,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:38:38,526 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:38:38,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:38:38,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:38:38,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:38:38,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:38:38,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:38:38,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:38:38,529 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:38:38,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:38:38,529 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:38:38,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:38:38,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:38:38,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:38:38,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:38:38,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:38:38,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:38:38,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:38:38,533 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:38:38,533 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:38:38,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:38:38,534 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:38:38,534 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:38:38,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:38:38,535 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_47956a2a-5ada-4bf7-b0fa-1cf0c26de2df/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47956a2a-5ada-4bf7-b0fa-1cf0c26de2df/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 [2022-11-02 20:38:38,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:38:38,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:38:38,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:38:38,949 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:38:38,950 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:38:38,952 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47956a2a-5ada-4bf7-b0fa-1cf0c26de2df/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2022-11-02 20:38:39,058 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47956a2a-5ada-4bf7-b0fa-1cf0c26de2df/bin/uautomizer-Dbtcem3rbc/data/1078425d1/749482d0501b4799b06c63abc43f1f00/FLAG701c8830f [2022-11-02 20:38:39,899 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:38:39,906 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47956a2a-5ada-4bf7-b0fa-1cf0c26de2df/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2022-11-02 20:38:39,942 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47956a2a-5ada-4bf7-b0fa-1cf0c26de2df/bin/uautomizer-Dbtcem3rbc/data/1078425d1/749482d0501b4799b06c63abc43f1f00/FLAG701c8830f [2022-11-02 20:38:39,980 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47956a2a-5ada-4bf7-b0fa-1cf0c26de2df/bin/uautomizer-Dbtcem3rbc/data/1078425d1/749482d0501b4799b06c63abc43f1f00 [2022-11-02 20:38:39,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:38:39,988 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:38:39,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:38:39,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:38:39,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:38:39,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:38:39" (1/1) ... [2022-11-02 20:38:39,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@773a97c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:39, skipping insertion in model container [2022-11-02 20:38:39,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:38:39" (1/1) ... [2022-11-02 20:38:40,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:38:40,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:38:41,235 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47956a2a-5ada-4bf7-b0fa-1cf0c26de2df/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i[76084,76097] [2022-11-02 20:38:41,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:38:41,332 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:38:41,381 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47956a2a-5ada-4bf7-b0fa-1cf0c26de2df/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i[76084,76097] [2022-11-02 20:38:41,397 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:38:41,572 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:38:41,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:41 WrapperNode [2022-11-02 20:38:41,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:38:41,574 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:38:41,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:38:41,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:38:41,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:41" (1/1) ... [2022-11-02 20:38:41,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:41" (1/1) ... [2022-11-02 20:38:41,652 INFO L138 Inliner]: procedures = 482, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 134 [2022-11-02 20:38:41,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:38:41,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:38:41,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:38:41,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:38:41,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:41" (1/1) ... [2022-11-02 20:38:41,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:41" (1/1) ... [2022-11-02 20:38:41,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:41" (1/1) ... [2022-11-02 20:38:41,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:41" (1/1) ... [2022-11-02 20:38:41,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:41" (1/1) ... [2022-11-02 20:38:41,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:41" (1/1) ... [2022-11-02 20:38:41,701 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:41" (1/1) ... [2022-11-02 20:38:41,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:41" (1/1) ... [2022-11-02 20:38:41,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:38:41,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:38:41,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:38:41,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:38:41,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:41" (1/1) ... [2022-11-02 20:38:41,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:38:41,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47956a2a-5ada-4bf7-b0fa-1cf0c26de2df/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:41,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47956a2a-5ada-4bf7-b0fa-1cf0c26de2df/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:38:41,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47956a2a-5ada-4bf7-b0fa-1cf0c26de2df/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:38:41,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:38:41,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:38:41,829 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 20:38:41,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:38:41,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:38:41,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:38:41,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:38:41,830 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-11-02 20:38:41,830 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-11-02 20:38:41,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:38:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:38:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:38:41,833 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:38:42,187 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:38:42,190 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:38:42,666 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:38:42,677 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:38:42,682 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:38:42,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:38:42 BoogieIcfgContainer [2022-11-02 20:38:42,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:38:42,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:38:42,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:38:42,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:38:42,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:38:39" (1/3) ... [2022-11-02 20:38:42,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f6d2f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:38:42, skipping insertion in model container [2022-11-02 20:38:42,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:41" (2/3) ... [2022-11-02 20:38:42,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f6d2f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:38:42, skipping insertion in model container [2022-11-02 20:38:42,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:38:42" (3/3) ... [2022-11-02 20:38:42,707 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_1-container_of-global.i [2022-11-02 20:38:42,723 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:38:42,736 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:38:42,737 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-02 20:38:42,737 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:38:42,903 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:38:42,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 194 transitions, 404 flow [2022-11-02 20:38:43,088 INFO L130 PetriNetUnfolder]: 10/239 cut-off events. [2022-11-02 20:38:43,088 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:38:43,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 239 events. 10/239 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 391 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 141. Up to 4 conditions per place. [2022-11-02 20:38:43,094 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 194 transitions, 404 flow [2022-11-02 20:38:43,113 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 180 transitions, 372 flow [2022-11-02 20:38:43,137 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:38:43,150 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4abc5a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:38:43,150 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-02 20:38:43,183 INFO L130 PetriNetUnfolder]: 0/46 cut-off events. [2022-11-02 20:38:43,184 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:38:43,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:38:43,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:43,186 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:38:43,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:43,194 INFO L85 PathProgramCache]: Analyzing trace with hash -974822883, now seen corresponding path program 1 times [2022-11-02 20:38:43,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:43,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043776070] [2022-11-02 20:38:43,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:43,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:44,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:44,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:44,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043776070] [2022-11-02 20:38:44,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043776070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:44,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:44,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:38:44,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101265703] [2022-11-02 20:38:44,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:44,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:38:44,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:44,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:38:44,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:38:44,344 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 194 [2022-11-02 20:38:44,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 180 transitions, 372 flow. Second operand has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:44,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:38:44,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 194 [2022-11-02 20:38:44,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:38:45,143 INFO L130 PetriNetUnfolder]: 361/1044 cut-off events. [2022-11-02 20:38:45,143 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-02 20:38:45,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1735 conditions, 1044 events. 361/1044 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6057 event pairs, 216 based on Foata normal form. 20/1010 useless extension candidates. Maximal degree in co-relation 1486. Up to 397 conditions per place. [2022-11-02 20:38:45,162 INFO L137 encePairwiseOnDemand]: 172/194 looper letters, 53 selfloop transitions, 17 changer transitions 1/176 dead transitions. [2022-11-02 20:38:45,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 176 transitions, 506 flow [2022-11-02 20:38:45,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:38:45,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:38:45,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1129 transitions. [2022-11-02 20:38:45,195 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6466208476517755 [2022-11-02 20:38:45,196 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1129 transitions. [2022-11-02 20:38:45,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1129 transitions. [2022-11-02 20:38:45,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:38:45,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1129 transitions. [2022-11-02 20:38:45,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 125.44444444444444) internal successors, (1129), 9 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:45,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 194.0) internal successors, (1940), 10 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:45,229 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 194.0) internal successors, (1940), 10 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:45,232 INFO L175 Difference]: Start difference. First operand has 180 places, 180 transitions, 372 flow. Second operand 9 states and 1129 transitions. [2022-11-02 20:38:45,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 176 transitions, 506 flow [2022-11-02 20:38:45,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 176 transitions, 498 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:38:45,248 INFO L231 Difference]: Finished difference. Result has 178 places, 169 transitions, 383 flow [2022-11-02 20:38:45,251 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=383, PETRI_PLACES=178, PETRI_TRANSITIONS=169} [2022-11-02 20:38:45,255 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, -2 predicate places. [2022-11-02 20:38:45,255 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 169 transitions, 383 flow [2022-11-02 20:38:45,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:45,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:38:45,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:45,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:38:45,258 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:38:45,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:45,260 INFO L85 PathProgramCache]: Analyzing trace with hash 2102646053, now seen corresponding path program 1 times [2022-11-02 20:38:45,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:45,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182175601] [2022-11-02 20:38:45,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:45,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:45,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:45,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:45,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182175601] [2022-11-02 20:38:45,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182175601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:45,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:45,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:38:45,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689931590] [2022-11-02 20:38:45,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:45,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:38:45,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:45,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:38:45,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:38:45,742 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 194 [2022-11-02 20:38:45,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 169 transitions, 383 flow. Second operand has 6 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:45,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:38:45,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 194 [2022-11-02 20:38:45,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:38:46,205 INFO L130 PetriNetUnfolder]: 361/1014 cut-off events. [2022-11-02 20:38:46,212 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-11-02 20:38:46,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1782 conditions, 1014 events. 361/1014 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5740 event pairs, 120 based on Foata normal form. 1/980 useless extension candidates. Maximal degree in co-relation 881. Up to 261 conditions per place. [2022-11-02 20:38:46,223 INFO L137 encePairwiseOnDemand]: 175/194 looper letters, 61 selfloop transitions, 18 changer transitions 1/184 dead transitions. [2022-11-02 20:38:46,224 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 184 transitions, 575 flow [2022-11-02 20:38:46,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:38:46,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:38:46,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1251 transitions. [2022-11-02 20:38:46,228 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6448453608247423 [2022-11-02 20:38:46,229 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1251 transitions. [2022-11-02 20:38:46,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1251 transitions. [2022-11-02 20:38:46,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:38:46,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1251 transitions. [2022-11-02 20:38:46,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 125.1) internal successors, (1251), 10 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:46,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 194.0) internal successors, (2134), 11 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:46,241 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 194.0) internal successors, (2134), 11 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:46,241 INFO L175 Difference]: Start difference. First operand has 178 places, 169 transitions, 383 flow. Second operand 10 states and 1251 transitions. [2022-11-02 20:38:46,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 184 transitions, 575 flow [2022-11-02 20:38:46,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 184 transitions, 546 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-02 20:38:46,256 INFO L231 Difference]: Finished difference. Result has 179 places, 168 transitions, 394 flow [2022-11-02 20:38:46,256 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=394, PETRI_PLACES=179, PETRI_TRANSITIONS=168} [2022-11-02 20:38:46,257 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, -1 predicate places. [2022-11-02 20:38:46,257 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 168 transitions, 394 flow [2022-11-02 20:38:46,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:46,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:38:46,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:46,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:38:46,260 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:38:46,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:46,263 INFO L85 PathProgramCache]: Analyzing trace with hash 2061215173, now seen corresponding path program 1 times [2022-11-02 20:38:46,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:46,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322806083] [2022-11-02 20:38:46,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:46,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:46,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:46,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:46,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322806083] [2022-11-02 20:38:46,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322806083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:46,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:46,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:38:46,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568259362] [2022-11-02 20:38:46,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:46,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:38:46,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:46,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:38:46,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:38:46,851 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 194 [2022-11-02 20:38:46,853 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 168 transitions, 394 flow. Second operand has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:46,853 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:38:46,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 194 [2022-11-02 20:38:46,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:38:47,796 INFO L130 PetriNetUnfolder]: 832/2091 cut-off events. [2022-11-02 20:38:47,797 INFO L131 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2022-11-02 20:38:47,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3834 conditions, 2091 events. 832/2091 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 13972 event pairs, 169 based on Foata normal form. 32/2090 useless extension candidates. Maximal degree in co-relation 1026. Up to 499 conditions per place. [2022-11-02 20:38:47,815 INFO L137 encePairwiseOnDemand]: 173/194 looper letters, 100 selfloop transitions, 49 changer transitions 0/253 dead transitions. [2022-11-02 20:38:47,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 253 transitions, 878 flow [2022-11-02 20:38:47,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:38:47,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-02 20:38:47,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1644 transitions. [2022-11-02 20:38:47,822 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6518636003172086 [2022-11-02 20:38:47,823 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1644 transitions. [2022-11-02 20:38:47,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1644 transitions. [2022-11-02 20:38:47,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:38:47,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1644 transitions. [2022-11-02 20:38:47,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 126.46153846153847) internal successors, (1644), 13 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:47,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 194.0) internal successors, (2716), 14 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:47,843 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 194.0) internal successors, (2716), 14 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:47,843 INFO L175 Difference]: Start difference. First operand has 179 places, 168 transitions, 394 flow. Second operand 13 states and 1644 transitions. [2022-11-02 20:38:47,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 253 transitions, 878 flow [2022-11-02 20:38:47,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 253 transitions, 832 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-02 20:38:47,854 INFO L231 Difference]: Finished difference. Result has 191 places, 205 transitions, 664 flow [2022-11-02 20:38:47,855 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=664, PETRI_PLACES=191, PETRI_TRANSITIONS=205} [2022-11-02 20:38:47,855 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 11 predicate places. [2022-11-02 20:38:47,856 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 205 transitions, 664 flow [2022-11-02 20:38:47,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:47,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:38:47,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:47,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:38:47,857 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:38:47,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:47,858 INFO L85 PathProgramCache]: Analyzing trace with hash 856568329, now seen corresponding path program 1 times [2022-11-02 20:38:47,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:47,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954598465] [2022-11-02 20:38:47,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:47,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:48,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:48,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954598465] [2022-11-02 20:38:48,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954598465] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:48,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:48,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:38:48,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926336605] [2022-11-02 20:38:48,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:48,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:38:48,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:48,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:38:48,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:38:48,400 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 194 [2022-11-02 20:38:48,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 205 transitions, 664 flow. Second operand has 6 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:48,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:38:48,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 194 [2022-11-02 20:38:48,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:38:49,452 INFO L130 PetriNetUnfolder]: 1084/2665 cut-off events. [2022-11-02 20:38:49,452 INFO L131 PetriNetUnfolder]: For 10877/10958 co-relation queries the response was YES. [2022-11-02 20:38:49,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9159 conditions, 2665 events. 1084/2665 cut-off events. For 10877/10958 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 19175 event pairs, 218 based on Foata normal form. 47/2679 useless extension candidates. Maximal degree in co-relation 7850. Up to 732 conditions per place. [2022-11-02 20:38:49,480 INFO L137 encePairwiseOnDemand]: 175/194 looper letters, 74 selfloop transitions, 48 changer transitions 69/294 dead transitions. [2022-11-02 20:38:49,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 294 transitions, 1748 flow [2022-11-02 20:38:49,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:38:49,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 20:38:49,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1395 transitions. [2022-11-02 20:38:49,486 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6537019681349578 [2022-11-02 20:38:49,486 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1395 transitions. [2022-11-02 20:38:49,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1395 transitions. [2022-11-02 20:38:49,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:38:49,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1395 transitions. [2022-11-02 20:38:49,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 126.81818181818181) internal successors, (1395), 11 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:49,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 194.0) internal successors, (2328), 12 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:49,498 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 194.0) internal successors, (2328), 12 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:49,501 INFO L175 Difference]: Start difference. First operand has 191 places, 205 transitions, 664 flow. Second operand 11 states and 1395 transitions. [2022-11-02 20:38:49,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 294 transitions, 1748 flow [2022-11-02 20:38:49,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 294 transitions, 1748 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:38:49,535 INFO L231 Difference]: Finished difference. Result has 209 places, 211 transitions, 977 flow [2022-11-02 20:38:49,536 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=977, PETRI_PLACES=209, PETRI_TRANSITIONS=211} [2022-11-02 20:38:49,537 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 29 predicate places. [2022-11-02 20:38:49,538 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 211 transitions, 977 flow [2022-11-02 20:38:49,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:49,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:38:49,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:49,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:38:49,541 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:38:49,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:49,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1190557847, now seen corresponding path program 1 times [2022-11-02 20:38:49,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:49,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141087760] [2022-11-02 20:38:49,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:49,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:49,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:49,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:49,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141087760] [2022-11-02 20:38:49,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141087760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:49,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:49,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:38:49,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316771144] [2022-11-02 20:38:49,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:49,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:38:49,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:49,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:38:49,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:38:49,816 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 194 [2022-11-02 20:38:49,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 211 transitions, 977 flow. Second operand has 5 states, 5 states have (on average 169.2) internal successors, (846), 5 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:49,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:38:49,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 194 [2022-11-02 20:38:49,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:38:49,904 INFO L130 PetriNetUnfolder]: 4/167 cut-off events. [2022-11-02 20:38:49,904 INFO L131 PetriNetUnfolder]: For 459/531 co-relation queries the response was YES. [2022-11-02 20:38:49,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 167 events. 4/167 cut-off events. For 459/531 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 4 based on Foata normal form. 8/173 useless extension candidates. Maximal degree in co-relation 336. Up to 13 conditions per place. [2022-11-02 20:38:49,906 INFO L137 encePairwiseOnDemand]: 189/194 looper letters, 9 selfloop transitions, 4 changer transitions 0/139 dead transitions. [2022-11-02 20:38:49,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 139 transitions, 436 flow [2022-11-02 20:38:49,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:38:49,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:38:49,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1016 transitions. [2022-11-02 20:38:49,909 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.872852233676976 [2022-11-02 20:38:49,910 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1016 transitions. [2022-11-02 20:38:49,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1016 transitions. [2022-11-02 20:38:49,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:38:49,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1016 transitions. [2022-11-02 20:38:49,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 169.33333333333334) internal successors, (1016), 6 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:49,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 194.0) internal successors, (1358), 7 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:49,917 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 194.0) internal successors, (1358), 7 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:49,918 INFO L175 Difference]: Start difference. First operand has 209 places, 211 transitions, 977 flow. Second operand 6 states and 1016 transitions. [2022-11-02 20:38:49,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 139 transitions, 436 flow [2022-11-02 20:38:49,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 139 transitions, 316 flow, removed 40 selfloop flow, removed 19 redundant places. [2022-11-02 20:38:49,924 INFO L231 Difference]: Finished difference. Result has 152 places, 139 transitions, 298 flow [2022-11-02 20:38:49,925 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=298, PETRI_PLACES=152, PETRI_TRANSITIONS=139} [2022-11-02 20:38:49,929 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, -28 predicate places. [2022-11-02 20:38:49,929 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 139 transitions, 298 flow [2022-11-02 20:38:49,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 169.2) internal successors, (846), 5 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:49,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:38:49,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:49,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:38:49,931 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:38:49,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:49,935 INFO L85 PathProgramCache]: Analyzing trace with hash 747769414, now seen corresponding path program 1 times [2022-11-02 20:38:49,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:49,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643620032] [2022-11-02 20:38:49,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:49,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:51,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:51,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:51,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643620032] [2022-11-02 20:38:51,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643620032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:51,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:51,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:38:51,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742675311] [2022-11-02 20:38:51,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:51,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:38:51,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:51,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:38:51,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:38:51,945 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 194 [2022-11-02 20:38:51,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 139 transitions, 298 flow. Second operand has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:51,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:38:51,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 194 [2022-11-02 20:38:51,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:38:52,448 INFO L130 PetriNetUnfolder]: 88/403 cut-off events. [2022-11-02 20:38:52,448 INFO L131 PetriNetUnfolder]: For 45/189 co-relation queries the response was YES. [2022-11-02 20:38:52,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 680 conditions, 403 events. 88/403 cut-off events. For 45/189 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1542 event pairs, 18 based on Foata normal form. 7/404 useless extension candidates. Maximal degree in co-relation 672. Up to 68 conditions per place. [2022-11-02 20:38:52,453 INFO L137 encePairwiseOnDemand]: 186/194 looper letters, 54 selfloop transitions, 9 changer transitions 0/179 dead transitions. [2022-11-02 20:38:52,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 179 transitions, 531 flow [2022-11-02 20:38:52,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:38:52,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:38:52,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1177 transitions. [2022-11-02 20:38:52,457 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8667157584683358 [2022-11-02 20:38:52,458 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1177 transitions. [2022-11-02 20:38:52,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1177 transitions. [2022-11-02 20:38:52,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:38:52,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1177 transitions. [2022-11-02 20:38:52,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 168.14285714285714) internal successors, (1177), 7 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:52,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:52,467 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:52,467 INFO L175 Difference]: Start difference. First operand has 152 places, 139 transitions, 298 flow. Second operand 7 states and 1177 transitions. [2022-11-02 20:38:52,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 179 transitions, 531 flow [2022-11-02 20:38:52,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 179 transitions, 524 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:38:52,472 INFO L231 Difference]: Finished difference. Result has 157 places, 145 transitions, 340 flow [2022-11-02 20:38:52,473 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=340, PETRI_PLACES=157, PETRI_TRANSITIONS=145} [2022-11-02 20:38:52,474 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, -23 predicate places. [2022-11-02 20:38:52,474 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 145 transitions, 340 flow [2022-11-02 20:38:52,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:52,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:38:52,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:52,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:38:52,476 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:38:52,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:52,477 INFO L85 PathProgramCache]: Analyzing trace with hash 917303412, now seen corresponding path program 2 times [2022-11-02 20:38:52,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:52,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477926981] [2022-11-02 20:38:52,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:52,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:54,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:54,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:54,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477926981] [2022-11-02 20:38:54,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477926981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:54,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:54,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-02 20:38:54,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300012779] [2022-11-02 20:38:54,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:54,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 20:38:54,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:54,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 20:38:54,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:38:54,939 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-11-02 20:38:54,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 145 transitions, 340 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:54,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:38:54,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-11-02 20:38:54,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:38:56,559 INFO L130 PetriNetUnfolder]: 583/1594 cut-off events. [2022-11-02 20:38:56,559 INFO L131 PetriNetUnfolder]: For 510/514 co-relation queries the response was YES. [2022-11-02 20:38:56,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3450 conditions, 1594 events. 583/1594 cut-off events. For 510/514 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 10341 event pairs, 95 based on Foata normal form. 3/1556 useless extension candidates. Maximal degree in co-relation 3439. Up to 337 conditions per place. [2022-11-02 20:38:56,574 INFO L137 encePairwiseOnDemand]: 169/194 looper letters, 140 selfloop transitions, 33 changer transitions 0/246 dead transitions. [2022-11-02 20:38:56,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 246 transitions, 970 flow [2022-11-02 20:38:56,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:38:56,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-02 20:38:56,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1967 transitions. [2022-11-02 20:38:56,582 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5336408030385241 [2022-11-02 20:38:56,582 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1967 transitions. [2022-11-02 20:38:56,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1967 transitions. [2022-11-02 20:38:56,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:38:56,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1967 transitions. [2022-11-02 20:38:56,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 103.52631578947368) internal successors, (1967), 19 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:56,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:56,600 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:56,600 INFO L175 Difference]: Start difference. First operand has 157 places, 145 transitions, 340 flow. Second operand 19 states and 1967 transitions. [2022-11-02 20:38:56,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 246 transitions, 970 flow [2022-11-02 20:38:56,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 246 transitions, 967 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:38:56,628 INFO L231 Difference]: Finished difference. Result has 180 places, 166 transitions, 515 flow [2022-11-02 20:38:56,629 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=515, PETRI_PLACES=180, PETRI_TRANSITIONS=166} [2022-11-02 20:38:56,630 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 0 predicate places. [2022-11-02 20:38:56,630 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 166 transitions, 515 flow [2022-11-02 20:38:56,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:56,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:38:56,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:56,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:38:56,634 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:38:56,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:56,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1335065666, now seen corresponding path program 3 times [2022-11-02 20:38:56,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:56,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512410189] [2022-11-02 20:38:56,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:56,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:58,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:58,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:58,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512410189] [2022-11-02 20:38:58,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512410189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:58,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:58,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-02 20:38:58,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910415954] [2022-11-02 20:38:58,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:58,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 20:38:58,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:58,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 20:38:58,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:38:58,820 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-11-02 20:38:58,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 166 transitions, 515 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:58,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:38:58,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-11-02 20:38:58,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:39:00,564 INFO L130 PetriNetUnfolder]: 729/2084 cut-off events. [2022-11-02 20:39:00,565 INFO L131 PetriNetUnfolder]: For 1538/1552 co-relation queries the response was YES. [2022-11-02 20:39:00,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5073 conditions, 2084 events. 729/2084 cut-off events. For 1538/1552 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 14881 event pairs, 317 based on Foata normal form. 5/2036 useless extension candidates. Maximal degree in co-relation 5055. Up to 659 conditions per place. [2022-11-02 20:39:00,587 INFO L137 encePairwiseOnDemand]: 172/194 looper letters, 134 selfloop transitions, 35 changer transitions 0/242 dead transitions. [2022-11-02 20:39:00,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 242 transitions, 1171 flow [2022-11-02 20:39:00,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:39:00,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:39:00,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1843 transitions. [2022-11-02 20:39:00,596 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2022-11-02 20:39:00,596 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1843 transitions. [2022-11-02 20:39:00,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1843 transitions. [2022-11-02 20:39:00,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:39:00,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1843 transitions. [2022-11-02 20:39:00,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 102.38888888888889) internal successors, (1843), 18 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:00,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 194.0) internal successors, (3686), 19 states have internal predecessors, (3686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:00,612 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 194.0) internal successors, (3686), 19 states have internal predecessors, (3686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:00,613 INFO L175 Difference]: Start difference. First operand has 180 places, 166 transitions, 515 flow. Second operand 18 states and 1843 transitions. [2022-11-02 20:39:00,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 242 transitions, 1171 flow [2022-11-02 20:39:00,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 242 transitions, 1151 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-02 20:39:00,624 INFO L231 Difference]: Finished difference. Result has 201 places, 180 transitions, 693 flow [2022-11-02 20:39:00,624 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=693, PETRI_PLACES=201, PETRI_TRANSITIONS=180} [2022-11-02 20:39:00,627 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 21 predicate places. [2022-11-02 20:39:00,628 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 180 transitions, 693 flow [2022-11-02 20:39:00,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:00,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:39:00,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:00,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:39:00,630 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:39:00,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:00,630 INFO L85 PathProgramCache]: Analyzing trace with hash -42614400, now seen corresponding path program 4 times [2022-11-02 20:39:00,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:00,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543144234] [2022-11-02 20:39:00,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:00,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:00,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:02,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:02,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:02,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543144234] [2022-11-02 20:39:02,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543144234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:02,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:02,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-02 20:39:02,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990763918] [2022-11-02 20:39:02,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:02,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 20:39:02,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:02,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 20:39:02,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:39:02,816 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-11-02 20:39:02,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 180 transitions, 693 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:02,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:39:02,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-11-02 20:39:02,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:39:04,569 INFO L130 PetriNetUnfolder]: 730/2136 cut-off events. [2022-11-02 20:39:04,569 INFO L131 PetriNetUnfolder]: For 2421/2451 co-relation queries the response was YES. [2022-11-02 20:39:04,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5515 conditions, 2136 events. 730/2136 cut-off events. For 2421/2451 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 15325 event pairs, 138 based on Foata normal form. 9/2095 useless extension candidates. Maximal degree in co-relation 5486. Up to 672 conditions per place. [2022-11-02 20:39:04,593 INFO L137 encePairwiseOnDemand]: 171/194 looper letters, 156 selfloop transitions, 42 changer transitions 0/271 dead transitions. [2022-11-02 20:39:04,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 271 transitions, 1496 flow [2022-11-02 20:39:04,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:39:04,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-02 20:39:04,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1958 transitions. [2022-11-02 20:39:04,602 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5311991318502441 [2022-11-02 20:39:04,603 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1958 transitions. [2022-11-02 20:39:04,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1958 transitions. [2022-11-02 20:39:04,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:39:04,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1958 transitions. [2022-11-02 20:39:04,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 103.05263157894737) internal successors, (1958), 19 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:04,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:04,624 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:04,625 INFO L175 Difference]: Start difference. First operand has 201 places, 180 transitions, 693 flow. Second operand 19 states and 1958 transitions. [2022-11-02 20:39:04,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 271 transitions, 1496 flow [2022-11-02 20:39:04,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 271 transitions, 1473 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-11-02 20:39:04,644 INFO L231 Difference]: Finished difference. Result has 223 places, 197 transitions, 943 flow [2022-11-02 20:39:04,645 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=943, PETRI_PLACES=223, PETRI_TRANSITIONS=197} [2022-11-02 20:39:04,645 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 43 predicate places. [2022-11-02 20:39:04,646 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 197 transitions, 943 flow [2022-11-02 20:39:04,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:04,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:39:04,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:04,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:39:04,649 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:39:04,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:04,649 INFO L85 PathProgramCache]: Analyzing trace with hash 147195474, now seen corresponding path program 5 times [2022-11-02 20:39:04,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:04,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415982893] [2022-11-02 20:39:04,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:04,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:05,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:05,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415982893] [2022-11-02 20:39:05,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415982893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:05,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:05,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:39:05,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172557850] [2022-11-02 20:39:05,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:05,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:39:05,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:05,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:39:05,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:39:05,860 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 194 [2022-11-02 20:39:05,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 197 transitions, 943 flow. Second operand has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:05,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:39:05,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 194 [2022-11-02 20:39:05,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:39:06,581 INFO L130 PetriNetUnfolder]: 288/1308 cut-off events. [2022-11-02 20:39:06,582 INFO L131 PetriNetUnfolder]: For 2558/3299 co-relation queries the response was YES. [2022-11-02 20:39:06,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3525 conditions, 1308 events. 288/1308 cut-off events. For 2558/3299 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 9008 event pairs, 47 based on Foata normal form. 31/1297 useless extension candidates. Maximal degree in co-relation 3487. Up to 316 conditions per place. [2022-11-02 20:39:06,603 INFO L137 encePairwiseOnDemand]: 186/194 looper letters, 87 selfloop transitions, 15 changer transitions 0/260 dead transitions. [2022-11-02 20:39:06,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 260 transitions, 1600 flow [2022-11-02 20:39:06,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:39:06,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:39:06,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1177 transitions. [2022-11-02 20:39:06,607 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8667157584683358 [2022-11-02 20:39:06,608 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1177 transitions. [2022-11-02 20:39:06,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1177 transitions. [2022-11-02 20:39:06,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:39:06,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1177 transitions. [2022-11-02 20:39:06,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 168.14285714285714) internal successors, (1177), 7 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:06,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:06,625 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:06,626 INFO L175 Difference]: Start difference. First operand has 223 places, 197 transitions, 943 flow. Second operand 7 states and 1177 transitions. [2022-11-02 20:39:06,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 260 transitions, 1600 flow [2022-11-02 20:39:06,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 260 transitions, 1537 flow, removed 21 selfloop flow, removed 5 redundant places. [2022-11-02 20:39:06,652 INFO L231 Difference]: Finished difference. Result has 227 places, 206 transitions, 1022 flow [2022-11-02 20:39:06,654 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=902, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1022, PETRI_PLACES=227, PETRI_TRANSITIONS=206} [2022-11-02 20:39:06,655 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 47 predicate places. [2022-11-02 20:39:06,655 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 206 transitions, 1022 flow [2022-11-02 20:39:06,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:06,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:39:06,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:06,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:39:06,657 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:39:06,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:06,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1877372928, now seen corresponding path program 6 times [2022-11-02 20:39:06,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:06,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077674064] [2022-11-02 20:39:06,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:06,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:06,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:08,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:08,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:08,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077674064] [2022-11-02 20:39:08,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077674064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:08,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:08,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-02 20:39:08,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460058370] [2022-11-02 20:39:08,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:08,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 20:39:08,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:08,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 20:39:08,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:39:08,439 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-11-02 20:39:08,442 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 206 transitions, 1022 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:08,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:39:08,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-11-02 20:39:08,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:39:10,452 INFO L130 PetriNetUnfolder]: 1217/3497 cut-off events. [2022-11-02 20:39:10,453 INFO L131 PetriNetUnfolder]: For 7875/7951 co-relation queries the response was YES. [2022-11-02 20:39:10,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10511 conditions, 3497 events. 1217/3497 cut-off events. For 7875/7951 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 29184 event pairs, 221 based on Foata normal form. 42/3455 useless extension candidates. Maximal degree in co-relation 10469. Up to 952 conditions per place. [2022-11-02 20:39:10,502 INFO L137 encePairwiseOnDemand]: 169/194 looper letters, 179 selfloop transitions, 50 changer transitions 0/309 dead transitions. [2022-11-02 20:39:10,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 309 transitions, 2226 flow [2022-11-02 20:39:10,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:39:10,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-02 20:39:10,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1745 transitions. [2022-11-02 20:39:10,507 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5291085506367496 [2022-11-02 20:39:10,508 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1745 transitions. [2022-11-02 20:39:10,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1745 transitions. [2022-11-02 20:39:10,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:39:10,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1745 transitions. [2022-11-02 20:39:10,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 102.6470588235294) internal successors, (1745), 17 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:10,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 194.0) internal successors, (3492), 18 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:10,523 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 194.0) internal successors, (3492), 18 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:10,524 INFO L175 Difference]: Start difference. First operand has 227 places, 206 transitions, 1022 flow. Second operand 17 states and 1745 transitions. [2022-11-02 20:39:10,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 309 transitions, 2226 flow [2022-11-02 20:39:10,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 309 transitions, 2208 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-11-02 20:39:10,565 INFO L231 Difference]: Finished difference. Result has 249 places, 225 transitions, 1365 flow [2022-11-02 20:39:10,565 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1365, PETRI_PLACES=249, PETRI_TRANSITIONS=225} [2022-11-02 20:39:10,566 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 69 predicate places. [2022-11-02 20:39:10,567 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 225 transitions, 1365 flow [2022-11-02 20:39:10,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:10,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:39:10,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:10,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:39:10,569 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:39:10,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:10,569 INFO L85 PathProgramCache]: Analyzing trace with hash 503735988, now seen corresponding path program 7 times [2022-11-02 20:39:10,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:10,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283891215] [2022-11-02 20:39:10,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:10,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:12,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:12,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:12,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283891215] [2022-11-02 20:39:12,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283891215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:12,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:12,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-02 20:39:12,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864614954] [2022-11-02 20:39:12,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:12,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 20:39:12,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:12,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 20:39:12,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:39:12,602 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-11-02 20:39:12,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 225 transitions, 1365 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:12,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:39:12,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-11-02 20:39:12,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:39:15,229 INFO L130 PetriNetUnfolder]: 1630/5055 cut-off events. [2022-11-02 20:39:15,229 INFO L131 PetriNetUnfolder]: For 14265/14388 co-relation queries the response was YES. [2022-11-02 20:39:15,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16025 conditions, 5055 events. 1630/5055 cut-off events. For 14265/14388 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 46427 event pairs, 690 based on Foata normal form. 61/5014 useless extension candidates. Maximal degree in co-relation 15976. Up to 1617 conditions per place. [2022-11-02 20:39:15,322 INFO L137 encePairwiseOnDemand]: 172/194 looper letters, 181 selfloop transitions, 70 changer transitions 0/331 dead transitions. [2022-11-02 20:39:15,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 331 transitions, 2705 flow [2022-11-02 20:39:15,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:39:15,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:39:15,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1840 transitions. [2022-11-02 20:39:15,328 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5269186712485682 [2022-11-02 20:39:15,328 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1840 transitions. [2022-11-02 20:39:15,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1840 transitions. [2022-11-02 20:39:15,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:39:15,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1840 transitions. [2022-11-02 20:39:15,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 102.22222222222223) internal successors, (1840), 18 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:15,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 194.0) internal successors, (3686), 19 states have internal predecessors, (3686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:15,342 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 194.0) internal successors, (3686), 19 states have internal predecessors, (3686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:15,342 INFO L175 Difference]: Start difference. First operand has 249 places, 225 transitions, 1365 flow. Second operand 18 states and 1840 transitions. [2022-11-02 20:39:15,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 331 transitions, 2705 flow [2022-11-02 20:39:15,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 331 transitions, 2650 flow, removed 14 selfloop flow, removed 6 redundant places. [2022-11-02 20:39:15,419 INFO L231 Difference]: Finished difference. Result has 270 places, 255 transitions, 1884 flow [2022-11-02 20:39:15,420 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1884, PETRI_PLACES=270, PETRI_TRANSITIONS=255} [2022-11-02 20:39:15,421 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 90 predicate places. [2022-11-02 20:39:15,421 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 255 transitions, 1884 flow [2022-11-02 20:39:15,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:15,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:39:15,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:15,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:39:15,423 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:39:15,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:15,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1071368198, now seen corresponding path program 8 times [2022-11-02 20:39:15,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:15,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411822658] [2022-11-02 20:39:15,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:15,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:16,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:16,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:16,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411822658] [2022-11-02 20:39:16,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411822658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:16,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:16,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:39:16,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63606753] [2022-11-02 20:39:16,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:16,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:39:16,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:16,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:39:16,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:39:16,266 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 194 [2022-11-02 20:39:16,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 255 transitions, 1884 flow. Second operand has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:16,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:39:16,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 194 [2022-11-02 20:39:16,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:39:17,915 INFO L130 PetriNetUnfolder]: 965/4542 cut-off events. [2022-11-02 20:39:17,915 INFO L131 PetriNetUnfolder]: For 20898/24220 co-relation queries the response was YES. [2022-11-02 20:39:17,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15136 conditions, 4542 events. 965/4542 cut-off events. For 20898/24220 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 47214 event pairs, 237 based on Foata normal form. 58/4489 useless extension candidates. Maximal degree in co-relation 15076. Up to 1214 conditions per place. [2022-11-02 20:39:17,992 INFO L137 encePairwiseOnDemand]: 186/194 looper letters, 121 selfloop transitions, 24 changer transitions 0/343 dead transitions. [2022-11-02 20:39:17,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 343 transitions, 2920 flow [2022-11-02 20:39:17,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:39:17,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:39:17,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1184 transitions. [2022-11-02 20:39:17,995 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8718703976435935 [2022-11-02 20:39:17,996 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1184 transitions. [2022-11-02 20:39:17,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1184 transitions. [2022-11-02 20:39:17,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:39:17,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1184 transitions. [2022-11-02 20:39:17,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 169.14285714285714) internal successors, (1184), 7 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) [2022-11-02 20:39:18,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:18,004 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:18,004 INFO L175 Difference]: Start difference. First operand has 270 places, 255 transitions, 1884 flow. Second operand 7 states and 1184 transitions. [2022-11-02 20:39:18,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 343 transitions, 2920 flow [2022-11-02 20:39:18,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 343 transitions, 2859 flow, removed 24 selfloop flow, removed 5 redundant places. [2022-11-02 20:39:18,099 INFO L231 Difference]: Finished difference. Result has 275 places, 266 transitions, 2032 flow [2022-11-02 20:39:18,099 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=1827, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2032, PETRI_PLACES=275, PETRI_TRANSITIONS=266} [2022-11-02 20:39:18,102 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 95 predicate places. [2022-11-02 20:39:18,103 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 266 transitions, 2032 flow [2022-11-02 20:39:18,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:18,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:39:18,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:18,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:39:18,104 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:39:18,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:18,105 INFO L85 PathProgramCache]: Analyzing trace with hash -926912250, now seen corresponding path program 9 times [2022-11-02 20:39:18,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:18,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922361273] [2022-11-02 20:39:18,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:18,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:20,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:20,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:20,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922361273] [2022-11-02 20:39:20,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922361273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:20,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:20,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 20:39:20,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985792827] [2022-11-02 20:39:20,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:20,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 20:39:20,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:20,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:39:20,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:39:20,699 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 194 [2022-11-02 20:39:20,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 266 transitions, 2032 flow. Second operand has 20 states, 20 states have (on average 97.1) internal successors, (1942), 20 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:20,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:39:20,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 194 [2022-11-02 20:39:20,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:39:26,220 INFO L130 PetriNetUnfolder]: 2837/9394 cut-off events. [2022-11-02 20:39:26,220 INFO L131 PetriNetUnfolder]: For 39672/40100 co-relation queries the response was YES. [2022-11-02 20:39:26,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32784 conditions, 9394 events. 2837/9394 cut-off events. For 39672/40100 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 101134 event pairs, 1275 based on Foata normal form. 174/9383 useless extension candidates. Maximal degree in co-relation 32720. Up to 2403 conditions per place. [2022-11-02 20:39:26,387 INFO L137 encePairwiseOnDemand]: 165/194 looper letters, 255 selfloop transitions, 108 changer transitions 0/448 dead transitions. [2022-11-02 20:39:26,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 448 transitions, 4508 flow [2022-11-02 20:39:26,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-02 20:39:26,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-02 20:39:26,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2785 transitions. [2022-11-02 20:39:26,394 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5127025036818851 [2022-11-02 20:39:26,394 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2785 transitions. [2022-11-02 20:39:26,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2785 transitions. [2022-11-02 20:39:26,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:39:26,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2785 transitions. [2022-11-02 20:39:26,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 99.46428571428571) internal successors, (2785), 28 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:26,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 194.0) internal successors, (5626), 29 states have internal predecessors, (5626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:26,415 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 194.0) internal successors, (5626), 29 states have internal predecessors, (5626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:26,416 INFO L175 Difference]: Start difference. First operand has 275 places, 266 transitions, 2032 flow. Second operand 28 states and 2785 transitions. [2022-11-02 20:39:26,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 448 transitions, 4508 flow [2022-11-02 20:39:26,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 448 transitions, 4480 flow, removed 7 selfloop flow, removed 2 redundant places. [2022-11-02 20:39:26,637 INFO L231 Difference]: Finished difference. Result has 309 places, 319 transitions, 3131 flow [2022-11-02 20:39:26,638 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=2010, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=3131, PETRI_PLACES=309, PETRI_TRANSITIONS=319} [2022-11-02 20:39:26,639 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 129 predicate places. [2022-11-02 20:39:26,639 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 319 transitions, 3131 flow [2022-11-02 20:39:26,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 97.1) internal successors, (1942), 20 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:26,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:39:26,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:26,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:39:26,641 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:39:26,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:26,642 INFO L85 PathProgramCache]: Analyzing trace with hash -711573664, now seen corresponding path program 10 times [2022-11-02 20:39:26,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:26,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753078543] [2022-11-02 20:39:26,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:26,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:27,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:27,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:27,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753078543] [2022-11-02 20:39:27,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753078543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:27,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:27,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:39:27,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269757124] [2022-11-02 20:39:27,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:27,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:39:27,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:27,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:39:27,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:39:27,669 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 194 [2022-11-02 20:39:27,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 319 transitions, 3131 flow. Second operand has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:27,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:39:27,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 194 [2022-11-02 20:39:27,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:39:30,263 INFO L130 PetriNetUnfolder]: 1507/7597 cut-off events. [2022-11-02 20:39:30,263 INFO L131 PetriNetUnfolder]: For 50025/65844 co-relation queries the response was YES. [2022-11-02 20:39:30,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27688 conditions, 7597 events. 1507/7597 cut-off events. For 50025/65844 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 89594 event pairs, 412 based on Foata normal form. 55/7497 useless extension candidates. Maximal degree in co-relation 27615. Up to 1440 conditions per place. [2022-11-02 20:39:30,371 INFO L137 encePairwiseOnDemand]: 186/194 looper letters, 138 selfloop transitions, 31 changer transitions 0/415 dead transitions. [2022-11-02 20:39:30,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 415 transitions, 4421 flow [2022-11-02 20:39:30,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:39:30,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:39:30,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1182 transitions. [2022-11-02 20:39:30,375 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8703976435935199 [2022-11-02 20:39:30,375 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1182 transitions. [2022-11-02 20:39:30,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1182 transitions. [2022-11-02 20:39:30,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:39:30,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1182 transitions. [2022-11-02 20:39:30,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 168.85714285714286) internal successors, (1182), 7 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:30,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:30,383 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:30,383 INFO L175 Difference]: Start difference. First operand has 309 places, 319 transitions, 3131 flow. Second operand 7 states and 1182 transitions. [2022-11-02 20:39:30,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 415 transitions, 4421 flow [2022-11-02 20:39:30,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 415 transitions, 4304 flow, removed 44 selfloop flow, removed 12 redundant places. [2022-11-02 20:39:30,622 INFO L231 Difference]: Finished difference. Result has 308 places, 332 transitions, 3327 flow [2022-11-02 20:39:30,623 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=3038, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3327, PETRI_PLACES=308, PETRI_TRANSITIONS=332} [2022-11-02 20:39:30,624 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 128 predicate places. [2022-11-02 20:39:30,624 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 332 transitions, 3327 flow [2022-11-02 20:39:30,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:30,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:39:30,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:30,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:39:30,625 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:39:30,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:30,626 INFO L85 PathProgramCache]: Analyzing trace with hash -363771670, now seen corresponding path program 11 times [2022-11-02 20:39:30,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:30,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129672082] [2022-11-02 20:39:30,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:30,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:32,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:32,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:32,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129672082] [2022-11-02 20:39:32,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129672082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:32,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:32,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-02 20:39:32,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557115201] [2022-11-02 20:39:32,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:32,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 20:39:32,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:32,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 20:39:32,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:39:32,446 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-11-02 20:39:32,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 332 transitions, 3327 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:32,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:39:32,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-11-02 20:39:32,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:39:37,557 INFO L130 PetriNetUnfolder]: 3848/12965 cut-off events. [2022-11-02 20:39:37,557 INFO L131 PetriNetUnfolder]: For 75158/75951 co-relation queries the response was YES. [2022-11-02 20:39:37,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49464 conditions, 12965 events. 3848/12965 cut-off events. For 75158/75951 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 149168 event pairs, 718 based on Foata normal form. 343/13060 useless extension candidates. Maximal degree in co-relation 49385. Up to 2280 conditions per place. [2022-11-02 20:39:37,779 INFO L137 encePairwiseOnDemand]: 169/194 looper letters, 273 selfloop transitions, 147 changer transitions 0/513 dead transitions. [2022-11-02 20:39:37,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 513 transitions, 6050 flow [2022-11-02 20:39:37,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:39:37,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-02 20:39:37,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1964 transitions. [2022-11-02 20:39:37,784 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5328269126424309 [2022-11-02 20:39:37,784 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1964 transitions. [2022-11-02 20:39:37,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1964 transitions. [2022-11-02 20:39:37,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:39:37,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1964 transitions. [2022-11-02 20:39:37,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 103.36842105263158) internal successors, (1964), 19 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:37,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:37,799 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:37,799 INFO L175 Difference]: Start difference. First operand has 308 places, 332 transitions, 3327 flow. Second operand 19 states and 1964 transitions. [2022-11-02 20:39:37,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 513 transitions, 6050 flow [2022-11-02 20:39:38,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 513 transitions, 6030 flow, removed 8 selfloop flow, removed 1 redundant places. [2022-11-02 20:39:38,245 INFO L231 Difference]: Finished difference. Result has 332 places, 379 transitions, 4561 flow [2022-11-02 20:39:38,246 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=3307, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4561, PETRI_PLACES=332, PETRI_TRANSITIONS=379} [2022-11-02 20:39:38,247 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 152 predicate places. [2022-11-02 20:39:38,247 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 379 transitions, 4561 flow [2022-11-02 20:39:38,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:38,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:39:38,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:38,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 20:39:38,249 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:39:38,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:38,249 INFO L85 PathProgramCache]: Analyzing trace with hash -451604274, now seen corresponding path program 12 times [2022-11-02 20:39:38,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:38,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312360358] [2022-11-02 20:39:38,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:38,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:39,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:39,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:39,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312360358] [2022-11-02 20:39:39,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312360358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:39,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:39,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:39:39,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262015772] [2022-11-02 20:39:39,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:39,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:39:39,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:39,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:39:39,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:39:39,124 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 194 [2022-11-02 20:39:39,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 379 transitions, 4561 flow. Second operand has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:39,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:39:39,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 194 [2022-11-02 20:39:39,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:39:41,557 INFO L130 PetriNetUnfolder]: 1227/6787 cut-off events. [2022-11-02 20:39:41,557 INFO L131 PetriNetUnfolder]: For 67839/75210 co-relation queries the response was YES. [2022-11-02 20:39:41,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27750 conditions, 6787 events. 1227/6787 cut-off events. For 67839/75210 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 78207 event pairs, 521 based on Foata normal form. 51/6668 useless extension candidates. Maximal degree in co-relation 27664. Up to 2426 conditions per place. [2022-11-02 20:39:41,630 INFO L137 encePairwiseOnDemand]: 187/194 looper letters, 137 selfloop transitions, 25 changer transitions 0/448 dead transitions. [2022-11-02 20:39:41,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 448 transitions, 5610 flow [2022-11-02 20:39:41,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:39:41,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:39:41,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1177 transitions. [2022-11-02 20:39:41,633 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8667157584683358 [2022-11-02 20:39:41,633 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1177 transitions. [2022-11-02 20:39:41,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1177 transitions. [2022-11-02 20:39:41,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:39:41,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1177 transitions. [2022-11-02 20:39:41,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 168.14285714285714) internal successors, (1177), 7 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:41,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:41,641 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:41,641 INFO L175 Difference]: Start difference. First operand has 332 places, 379 transitions, 4561 flow. Second operand 7 states and 1177 transitions. [2022-11-02 20:39:41,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 448 transitions, 5610 flow [2022-11-02 20:39:41,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 448 transitions, 5490 flow, removed 45 selfloop flow, removed 6 redundant places. [2022-11-02 20:39:41,951 INFO L231 Difference]: Finished difference. Result has 335 places, 379 transitions, 4519 flow [2022-11-02 20:39:41,952 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=4349, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4519, PETRI_PLACES=335, PETRI_TRANSITIONS=379} [2022-11-02 20:39:41,953 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 155 predicate places. [2022-11-02 20:39:41,953 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 379 transitions, 4519 flow [2022-11-02 20:39:41,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:41,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:39:41,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:41,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 20:39:41,954 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:39:41,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:41,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1697167838, now seen corresponding path program 13 times [2022-11-02 20:39:41,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:41,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407700691] [2022-11-02 20:39:41,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:41,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:42,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:42,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:42,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407700691] [2022-11-02 20:39:42,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407700691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:42,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:42,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:39:42,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828513771] [2022-11-02 20:39:42,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:42,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:39:42,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:42,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:39:42,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:39:42,808 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 194 [2022-11-02 20:39:42,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 379 transitions, 4519 flow. Second operand has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:42,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:39:42,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 194 [2022-11-02 20:39:42,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:39:45,626 INFO L130 PetriNetUnfolder]: 1220/7133 cut-off events. [2022-11-02 20:39:45,626 INFO L131 PetriNetUnfolder]: For 70371/84038 co-relation queries the response was YES. [2022-11-02 20:39:45,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29065 conditions, 7133 events. 1220/7133 cut-off events. For 70371/84038 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 83959 event pairs, 527 based on Foata normal form. 68/7026 useless extension candidates. Maximal degree in co-relation 28975. Up to 1432 conditions per place. [2022-11-02 20:39:45,719 INFO L137 encePairwiseOnDemand]: 186/194 looper letters, 156 selfloop transitions, 32 changer transitions 0/474 dead transitions. [2022-11-02 20:39:45,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 474 transitions, 5934 flow [2022-11-02 20:39:45,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:39:45,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:39:45,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1185 transitions. [2022-11-02 20:39:45,722 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8726067746686303 [2022-11-02 20:39:45,723 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1185 transitions. [2022-11-02 20:39:45,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1185 transitions. [2022-11-02 20:39:45,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:39:45,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1185 transitions. [2022-11-02 20:39:45,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 169.28571428571428) internal successors, (1185), 7 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:45,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:45,730 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:45,730 INFO L175 Difference]: Start difference. First operand has 335 places, 379 transitions, 4519 flow. Second operand 7 states and 1185 transitions. [2022-11-02 20:39:45,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 474 transitions, 5934 flow [2022-11-02 20:39:45,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 474 transitions, 5874 flow, removed 9 selfloop flow, removed 3 redundant places. [2022-11-02 20:39:45,997 INFO L231 Difference]: Finished difference. Result has 341 places, 386 transitions, 4688 flow [2022-11-02 20:39:45,998 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=4471, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4688, PETRI_PLACES=341, PETRI_TRANSITIONS=386} [2022-11-02 20:39:45,998 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 161 predicate places. [2022-11-02 20:39:45,998 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 386 transitions, 4688 flow [2022-11-02 20:39:45,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:45,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:39:45,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:45,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 20:39:45,999 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:39:46,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:46,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1230231410, now seen corresponding path program 14 times [2022-11-02 20:39:46,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:46,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004008399] [2022-11-02 20:39:46,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:46,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:46,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:46,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:46,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004008399] [2022-11-02 20:39:46,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004008399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:46,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:46,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:39:46,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791632401] [2022-11-02 20:39:46,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:46,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:39:46,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:46,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:39:46,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:39:46,712 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 194 [2022-11-02 20:39:46,713 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 386 transitions, 4688 flow. Second operand has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:46,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:39:46,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 194 [2022-11-02 20:39:46,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:39:49,836 INFO L130 PetriNetUnfolder]: 1467/8749 cut-off events. [2022-11-02 20:39:49,836 INFO L131 PetriNetUnfolder]: For 90303/122357 co-relation queries the response was YES. [2022-11-02 20:39:49,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35873 conditions, 8749 events. 1467/8749 cut-off events. For 90303/122357 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 108578 event pairs, 504 based on Foata normal form. 68/8620 useless extension candidates. Maximal degree in co-relation 35780. Up to 2726 conditions per place. [2022-11-02 20:39:49,990 INFO L137 encePairwiseOnDemand]: 186/194 looper letters, 161 selfloop transitions, 39 changer transitions 0/486 dead transitions. [2022-11-02 20:39:49,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 486 transitions, 6254 flow [2022-11-02 20:39:49,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:39:49,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:39:49,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1183 transitions. [2022-11-02 20:39:49,994 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8711340206185567 [2022-11-02 20:39:49,994 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1183 transitions. [2022-11-02 20:39:49,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1183 transitions. [2022-11-02 20:39:49,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:39:49,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1183 transitions. [2022-11-02 20:39:49,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 169.0) internal successors, (1183), 7 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) [2022-11-02 20:39:50,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:50,003 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:50,003 INFO L175 Difference]: Start difference. First operand has 341 places, 386 transitions, 4688 flow. Second operand 7 states and 1183 transitions. [2022-11-02 20:39:50,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 486 transitions, 6254 flow [2022-11-02 20:39:50,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 486 transitions, 6190 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-11-02 20:39:50,502 INFO L231 Difference]: Finished difference. Result has 348 places, 397 transitions, 4942 flow [2022-11-02 20:39:50,502 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=4632, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4942, PETRI_PLACES=348, PETRI_TRANSITIONS=397} [2022-11-02 20:39:50,503 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 168 predicate places. [2022-11-02 20:39:50,503 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 397 transitions, 4942 flow [2022-11-02 20:39:50,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:50,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:39:50,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:50,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-02 20:39:50,505 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:39:50,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:50,505 INFO L85 PathProgramCache]: Analyzing trace with hash 712131988, now seen corresponding path program 15 times [2022-11-02 20:39:50,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:50,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492685133] [2022-11-02 20:39:50,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:50,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:51,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:51,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:51,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492685133] [2022-11-02 20:39:51,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492685133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:51,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:51,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:39:51,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992927520] [2022-11-02 20:39:51,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:51,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:39:51,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:51,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:39:51,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:39:51,317 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 194 [2022-11-02 20:39:51,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 397 transitions, 4942 flow. Second operand has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:51,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:39:51,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 194 [2022-11-02 20:39:51,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:39:54,607 INFO L130 PetriNetUnfolder]: 1447/8525 cut-off events. [2022-11-02 20:39:54,608 INFO L131 PetriNetUnfolder]: For 95371/126509 co-relation queries the response was YES. [2022-11-02 20:39:54,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36479 conditions, 8525 events. 1447/8525 cut-off events. For 95371/126509 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 104847 event pairs, 670 based on Foata normal form. 62/8368 useless extension candidates. Maximal degree in co-relation 36382. Up to 2100 conditions per place. [2022-11-02 20:39:54,743 INFO L137 encePairwiseOnDemand]: 186/194 looper letters, 188 selfloop transitions, 31 changer transitions 0/505 dead transitions. [2022-11-02 20:39:54,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 505 transitions, 6669 flow [2022-11-02 20:39:54,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:39:54,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:39:54,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1187 transitions. [2022-11-02 20:39:54,746 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.874079528718704 [2022-11-02 20:39:54,746 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1187 transitions. [2022-11-02 20:39:54,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1187 transitions. [2022-11-02 20:39:54,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:39:54,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1187 transitions. [2022-11-02 20:39:54,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 169.57142857142858) internal successors, (1187), 7 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) [2022-11-02 20:39:54,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:54,753 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:54,754 INFO L175 Difference]: Start difference. First operand has 348 places, 397 transitions, 4942 flow. Second operand 7 states and 1187 transitions. [2022-11-02 20:39:54,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 505 transitions, 6669 flow [2022-11-02 20:39:55,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 505 transitions, 6575 flow, removed 27 selfloop flow, removed 2 redundant places. [2022-11-02 20:39:55,291 INFO L231 Difference]: Finished difference. Result has 356 places, 406 transitions, 5154 flow [2022-11-02 20:39:55,291 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=4865, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5154, PETRI_PLACES=356, PETRI_TRANSITIONS=406} [2022-11-02 20:39:55,292 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 176 predicate places. [2022-11-02 20:39:55,292 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 406 transitions, 5154 flow [2022-11-02 20:39:55,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:55,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:39:55,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:55,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 20:39:55,293 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:39:55,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:55,294 INFO L85 PathProgramCache]: Analyzing trace with hash -177082658, now seen corresponding path program 16 times [2022-11-02 20:39:55,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:55,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319823658] [2022-11-02 20:39:55,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:55,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:55,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:55,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:55,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319823658] [2022-11-02 20:39:55,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319823658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:55,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:55,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:39:55,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471147540] [2022-11-02 20:39:55,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:55,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:39:55,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:55,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:39:55,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:39:55,934 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 194 [2022-11-02 20:39:55,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 406 transitions, 5154 flow. Second operand has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:55,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:39:55,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 194 [2022-11-02 20:39:55,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:39:59,348 INFO L130 PetriNetUnfolder]: 1431/8506 cut-off events. [2022-11-02 20:39:59,348 INFO L131 PetriNetUnfolder]: For 98102/133052 co-relation queries the response was YES. [2022-11-02 20:39:59,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36465 conditions, 8506 events. 1431/8506 cut-off events. For 98102/133052 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 104642 event pairs, 513 based on Foata normal form. 58/8362 useless extension candidates. Maximal degree in co-relation 36364. Up to 1809 conditions per place. [2022-11-02 20:39:59,507 INFO L137 encePairwiseOnDemand]: 186/194 looper letters, 175 selfloop transitions, 35 changer transitions 0/496 dead transitions. [2022-11-02 20:39:59,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 496 transitions, 6639 flow [2022-11-02 20:39:59,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:39:59,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:39:59,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1180 transitions. [2022-11-02 20:39:59,510 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8689248895434463 [2022-11-02 20:39:59,510 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1180 transitions. [2022-11-02 20:39:59,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1180 transitions. [2022-11-02 20:39:59,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:39:59,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1180 transitions. [2022-11-02 20:39:59,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 168.57142857142858) internal successors, (1180), 7 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:59,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:59,517 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:59,517 INFO L175 Difference]: Start difference. First operand has 356 places, 406 transitions, 5154 flow. Second operand 7 states and 1180 transitions. [2022-11-02 20:39:59,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 496 transitions, 6639 flow [2022-11-02 20:39:59,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 496 transitions, 6585 flow, removed 16 selfloop flow, removed 2 redundant places. [2022-11-02 20:39:59,935 INFO L231 Difference]: Finished difference. Result has 365 places, 417 transitions, 5443 flow [2022-11-02 20:39:59,936 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=5104, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5443, PETRI_PLACES=365, PETRI_TRANSITIONS=417} [2022-11-02 20:39:59,936 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 185 predicate places. [2022-11-02 20:39:59,937 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 417 transitions, 5443 flow [2022-11-02 20:39:59,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:59,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:39:59,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:59,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-02 20:39:59,937 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:39:59,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:59,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1685746818, now seen corresponding path program 17 times [2022-11-02 20:39:59,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:59,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277436631] [2022-11-02 20:39:59,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:59,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:00,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:00,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:00,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277436631] [2022-11-02 20:40:00,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277436631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:00,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:00,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:40:00,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118828745] [2022-11-02 20:40:00,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:00,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:40:00,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:00,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:40:00,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:40:00,870 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 194 [2022-11-02 20:40:00,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 417 transitions, 5443 flow. Second operand has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:00,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:00,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 194 [2022-11-02 20:40:00,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:04,355 INFO L130 PetriNetUnfolder]: 1180/7342 cut-off events. [2022-11-02 20:40:04,355 INFO L131 PetriNetUnfolder]: For 93170/124884 co-relation queries the response was YES. [2022-11-02 20:40:04,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32623 conditions, 7342 events. 1180/7342 cut-off events. For 93170/124884 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 87961 event pairs, 578 based on Foata normal form. 58/7203 useless extension candidates. Maximal degree in co-relation 32517. Up to 2084 conditions per place. [2022-11-02 20:40:04,478 INFO L137 encePairwiseOnDemand]: 186/194 looper letters, 201 selfloop transitions, 33 changer transitions 0/516 dead transitions. [2022-11-02 20:40:04,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 516 transitions, 6979 flow [2022-11-02 20:40:04,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:40:04,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:40:04,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1191 transitions. [2022-11-02 20:40:04,482 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8770250368188512 [2022-11-02 20:40:04,482 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1191 transitions. [2022-11-02 20:40:04,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1191 transitions. [2022-11-02 20:40:04,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:04,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1191 transitions. [2022-11-02 20:40:04,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 170.14285714285714) internal successors, (1191), 7 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:04,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:04,490 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:04,490 INFO L175 Difference]: Start difference. First operand has 365 places, 417 transitions, 5443 flow. Second operand 7 states and 1191 transitions. [2022-11-02 20:40:04,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 516 transitions, 6979 flow [2022-11-02 20:40:04,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 516 transitions, 6907 flow, removed 36 selfloop flow, removed 0 redundant places. [2022-11-02 20:40:04,924 INFO L231 Difference]: Finished difference. Result has 374 places, 418 transitions, 5505 flow [2022-11-02 20:40:04,924 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=5267, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5505, PETRI_PLACES=374, PETRI_TRANSITIONS=418} [2022-11-02 20:40:04,925 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 194 predicate places. [2022-11-02 20:40:04,925 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 418 transitions, 5505 flow [2022-11-02 20:40:04,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:04,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:04,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:04,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-02 20:40:04,926 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:40:04,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:04,927 INFO L85 PathProgramCache]: Analyzing trace with hash -403948616, now seen corresponding path program 18 times [2022-11-02 20:40:04,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:04,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673027417] [2022-11-02 20:40:04,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:04,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:05,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:05,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:05,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673027417] [2022-11-02 20:40:05,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673027417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:05,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:05,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:40:05,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861999061] [2022-11-02 20:40:05,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:05,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:40:05,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:05,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:40:05,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:40:05,781 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 194 [2022-11-02 20:40:05,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 418 transitions, 5505 flow. Second operand has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:05,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:05,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 194 [2022-11-02 20:40:05,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:08,595 INFO L130 PetriNetUnfolder]: 956/6478 cut-off events. [2022-11-02 20:40:08,595 INFO L131 PetriNetUnfolder]: For 84941/117974 co-relation queries the response was YES. [2022-11-02 20:40:08,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28569 conditions, 6478 events. 956/6478 cut-off events. For 84941/117974 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 75938 event pairs, 419 based on Foata normal form. 36/6349 useless extension candidates. Maximal degree in co-relation 28459. Up to 2150 conditions per place. [2022-11-02 20:40:08,687 INFO L137 encePairwiseOnDemand]: 187/194 looper letters, 156 selfloop transitions, 44 changer transitions 0/478 dead transitions. [2022-11-02 20:40:08,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 478 transitions, 6559 flow [2022-11-02 20:40:08,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:40:08,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:40:08,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1178 transitions. [2022-11-02 20:40:08,691 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8674521354933726 [2022-11-02 20:40:08,691 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1178 transitions. [2022-11-02 20:40:08,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1178 transitions. [2022-11-02 20:40:08,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:08,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1178 transitions. [2022-11-02 20:40:08,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 168.28571428571428) internal successors, (1178), 7 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:08,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:08,697 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:08,697 INFO L175 Difference]: Start difference. First operand has 374 places, 418 transitions, 5505 flow. Second operand 7 states and 1178 transitions. [2022-11-02 20:40:08,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 478 transitions, 6559 flow [2022-11-02 20:40:09,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 478 transitions, 6490 flow, removed 16 selfloop flow, removed 3 redundant places. [2022-11-02 20:40:09,085 INFO L231 Difference]: Finished difference. Result has 380 places, 418 transitions, 5566 flow [2022-11-02 20:40:09,085 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=5324, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5566, PETRI_PLACES=380, PETRI_TRANSITIONS=418} [2022-11-02 20:40:09,086 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 200 predicate places. [2022-11-02 20:40:09,086 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 418 transitions, 5566 flow [2022-11-02 20:40:09,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:09,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:09,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:09,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-02 20:40:09,087 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:40:09,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:09,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1387493026, now seen corresponding path program 19 times [2022-11-02 20:40:09,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:09,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597324363] [2022-11-02 20:40:09,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:09,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:10,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:10,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:10,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597324363] [2022-11-02 20:40:10,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597324363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:10,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:10,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:40:10,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693101208] [2022-11-02 20:40:10,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:10,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:40:10,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:10,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:40:10,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:40:10,159 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 194 [2022-11-02 20:40:10,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 418 transitions, 5566 flow. Second operand has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:10,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:10,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 194 [2022-11-02 20:40:10,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:12,975 INFO L130 PetriNetUnfolder]: 948/6725 cut-off events. [2022-11-02 20:40:12,975 INFO L131 PetriNetUnfolder]: For 91894/128358 co-relation queries the response was YES. [2022-11-02 20:40:13,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29846 conditions, 6725 events. 948/6725 cut-off events. For 91894/128358 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 79835 event pairs, 352 based on Foata normal form. 56/6592 useless extension candidates. Maximal degree in co-relation 29733. Up to 1269 conditions per place. [2022-11-02 20:40:13,123 INFO L137 encePairwiseOnDemand]: 186/194 looper letters, 191 selfloop transitions, 36 changer transitions 0/501 dead transitions. [2022-11-02 20:40:13,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 501 transitions, 6938 flow [2022-11-02 20:40:13,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:40:13,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:40:13,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1184 transitions. [2022-11-02 20:40:13,127 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8718703976435935 [2022-11-02 20:40:13,127 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1184 transitions. [2022-11-02 20:40:13,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1184 transitions. [2022-11-02 20:40:13,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:13,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1184 transitions. [2022-11-02 20:40:13,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 169.14285714285714) internal successors, (1184), 7 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) [2022-11-02 20:40:13,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:13,135 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:13,135 INFO L175 Difference]: Start difference. First operand has 380 places, 418 transitions, 5566 flow. Second operand 7 states and 1184 transitions. [2022-11-02 20:40:13,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 501 transitions, 6938 flow [2022-11-02 20:40:13,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 501 transitions, 6816 flow, removed 21 selfloop flow, removed 3 redundant places. [2022-11-02 20:40:13,605 INFO L231 Difference]: Finished difference. Result has 386 places, 421 transitions, 5606 flow [2022-11-02 20:40:13,605 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=5369, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5606, PETRI_PLACES=386, PETRI_TRANSITIONS=421} [2022-11-02 20:40:13,606 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 206 predicate places. [2022-11-02 20:40:13,606 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 421 transitions, 5606 flow [2022-11-02 20:40:13,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:13,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:13,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:13,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-02 20:40:13,607 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:40:13,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:13,607 INFO L85 PathProgramCache]: Analyzing trace with hash 735001446, now seen corresponding path program 20 times [2022-11-02 20:40:13,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:13,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821050284] [2022-11-02 20:40:13,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:13,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:14,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:14,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:14,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821050284] [2022-11-02 20:40:14,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821050284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:14,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:14,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:40:14,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710654916] [2022-11-02 20:40:14,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:14,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:40:14,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:14,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:40:14,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:40:14,531 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 194 [2022-11-02 20:40:14,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 421 transitions, 5606 flow. Second operand has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:14,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:14,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 194 [2022-11-02 20:40:14,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:17,193 INFO L130 PetriNetUnfolder]: 951/6786 cut-off events. [2022-11-02 20:40:17,193 INFO L131 PetriNetUnfolder]: For 93056/128667 co-relation queries the response was YES. [2022-11-02 20:40:17,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30298 conditions, 6786 events. 951/6786 cut-off events. For 93056/128667 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 80870 event pairs, 298 based on Foata normal form. 42/6649 useless extension candidates. Maximal degree in co-relation 30182. Up to 1269 conditions per place. [2022-11-02 20:40:17,325 INFO L137 encePairwiseOnDemand]: 186/194 looper letters, 219 selfloop transitions, 33 changer transitions 0/526 dead transitions. [2022-11-02 20:40:17,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 526 transitions, 7379 flow [2022-11-02 20:40:17,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:40:17,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:40:17,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1188 transitions. [2022-11-02 20:40:17,328 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8748159057437408 [2022-11-02 20:40:17,328 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1188 transitions. [2022-11-02 20:40:17,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1188 transitions. [2022-11-02 20:40:17,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:17,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1188 transitions. [2022-11-02 20:40:17,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 169.71428571428572) internal successors, (1188), 7 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:17,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:17,334 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:17,334 INFO L175 Difference]: Start difference. First operand has 386 places, 421 transitions, 5606 flow. Second operand 7 states and 1188 transitions. [2022-11-02 20:40:17,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 526 transitions, 7379 flow [2022-11-02 20:40:17,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 526 transitions, 7289 flow, removed 29 selfloop flow, removed 2 redundant places. [2022-11-02 20:40:17,775 INFO L231 Difference]: Finished difference. Result has 394 places, 430 transitions, 5831 flow [2022-11-02 20:40:17,776 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=5524, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5831, PETRI_PLACES=394, PETRI_TRANSITIONS=430} [2022-11-02 20:40:17,777 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 214 predicate places. [2022-11-02 20:40:17,777 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 430 transitions, 5831 flow [2022-11-02 20:40:17,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:17,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:17,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:17,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-02 20:40:17,778 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:40:17,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:17,779 INFO L85 PathProgramCache]: Analyzing trace with hash 7633362, now seen corresponding path program 21 times [2022-11-02 20:40:17,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:17,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588205262] [2022-11-02 20:40:17,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:17,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:18,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:18,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:18,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588205262] [2022-11-02 20:40:18,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588205262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:18,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:18,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:40:18,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338212435] [2022-11-02 20:40:18,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:18,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:40:18,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:18,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:40:18,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:40:18,419 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 194 [2022-11-02 20:40:18,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 430 transitions, 5831 flow. Second operand has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:18,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:18,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 194 [2022-11-02 20:40:18,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:20,699 INFO L130 PetriNetUnfolder]: 703/5675 cut-off events. [2022-11-02 20:40:20,699 INFO L131 PetriNetUnfolder]: For 85461/120607 co-relation queries the response was YES. [2022-11-02 20:40:20,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25677 conditions, 5675 events. 703/5675 cut-off events. For 85461/120607 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 65677 event pairs, 278 based on Foata normal form. 58/5561 useless extension candidates. Maximal degree in co-relation 25557. Up to 1269 conditions per place. [2022-11-02 20:40:20,803 INFO L137 encePairwiseOnDemand]: 186/194 looper letters, 219 selfloop transitions, 33 changer transitions 0/499 dead transitions. [2022-11-02 20:40:20,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 499 transitions, 6930 flow [2022-11-02 20:40:20,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:40:20,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:40:20,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1191 transitions. [2022-11-02 20:40:20,807 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8770250368188512 [2022-11-02 20:40:20,807 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1191 transitions. [2022-11-02 20:40:20,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1191 transitions. [2022-11-02 20:40:20,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:20,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1191 transitions. [2022-11-02 20:40:20,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 170.14285714285714) internal successors, (1191), 7 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:20,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:20,811 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:20,812 INFO L175 Difference]: Start difference. First operand has 394 places, 430 transitions, 5831 flow. Second operand 7 states and 1191 transitions. [2022-11-02 20:40:20,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 499 transitions, 6930 flow [2022-11-02 20:40:21,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 499 transitions, 6350 flow, removed 145 selfloop flow, removed 35 redundant places. [2022-11-02 20:40:21,225 INFO L231 Difference]: Finished difference. Result has 366 places, 406 transitions, 5149 flow [2022-11-02 20:40:21,226 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=4898, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5149, PETRI_PLACES=366, PETRI_TRANSITIONS=406} [2022-11-02 20:40:21,227 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 186 predicate places. [2022-11-02 20:40:21,227 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 406 transitions, 5149 flow [2022-11-02 20:40:21,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:21,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:21,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:21,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-02 20:40:21,228 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:40:21,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:21,228 INFO L85 PathProgramCache]: Analyzing trace with hash -844170165, now seen corresponding path program 1 times [2022-11-02 20:40:21,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:21,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228727820] [2022-11-02 20:40:21,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:21,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:25,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:25,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:25,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228727820] [2022-11-02 20:40:25,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228727820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:25,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:25,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-11-02 20:40:25,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921488873] [2022-11-02 20:40:25,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:25,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-02 20:40:25,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:25,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-02 20:40:25,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1006, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 20:40:25,162 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 194 [2022-11-02 20:40:25,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 406 transitions, 5149 flow. Second operand has 34 states, 34 states have (on average 88.20588235294117) internal successors, (2999), 34 states have internal predecessors, (2999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:25,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:25,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 194 [2022-11-02 20:40:25,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:36,728 INFO L130 PetriNetUnfolder]: 4416/13489 cut-off events. [2022-11-02 20:40:36,728 INFO L131 PetriNetUnfolder]: For 134660/134690 co-relation queries the response was YES. [2022-11-02 20:40:36,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58661 conditions, 13489 events. 4416/13489 cut-off events. For 134660/134690 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 147035 event pairs, 1223 based on Foata normal form. 11/13215 useless extension candidates. Maximal degree in co-relation 58567. Up to 4989 conditions per place. [2022-11-02 20:40:36,963 INFO L137 encePairwiseOnDemand]: 154/194 looper letters, 436 selfloop transitions, 206 changer transitions 30/740 dead transitions. [2022-11-02 20:40:36,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 740 transitions, 11450 flow [2022-11-02 20:40:36,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-02 20:40:36,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-11-02 20:40:36,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 3850 transitions. [2022-11-02 20:40:36,970 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4725085910652921 [2022-11-02 20:40:36,970 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 3850 transitions. [2022-11-02 20:40:36,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 3850 transitions. [2022-11-02 20:40:36,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:36,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 3850 transitions. [2022-11-02 20:40:36,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 91.66666666666667) internal successors, (3850), 42 states have internal predecessors, (3850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:36,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 194.0) internal successors, (8342), 43 states have internal predecessors, (8342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:36,991 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 194.0) internal successors, (8342), 43 states have internal predecessors, (8342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:36,991 INFO L175 Difference]: Start difference. First operand has 366 places, 406 transitions, 5149 flow. Second operand 42 states and 3850 transitions. [2022-11-02 20:40:36,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 740 transitions, 11450 flow [2022-11-02 20:40:37,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 740 transitions, 11258 flow, removed 54 selfloop flow, removed 3 redundant places. [2022-11-02 20:40:37,837 INFO L231 Difference]: Finished difference. Result has 421 places, 504 transitions, 7299 flow [2022-11-02 20:40:37,838 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=5058, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=7299, PETRI_PLACES=421, PETRI_TRANSITIONS=504} [2022-11-02 20:40:37,838 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 241 predicate places. [2022-11-02 20:40:37,838 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 504 transitions, 7299 flow [2022-11-02 20:40:37,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 88.20588235294117) internal successors, (2999), 34 states have internal predecessors, (2999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:37,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:37,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:37,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-02 20:40:37,839 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:40:37,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:37,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1563477259, now seen corresponding path program 2 times [2022-11-02 20:40:37,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:37,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247457216] [2022-11-02 20:40:37,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:37,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat