./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed905f7-f51e-4b39-8fbb-aa5a393fae8f/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed905f7-f51e-4b39-8fbb-aa5a393fae8f/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_0ed905f7-f51e-4b39-8fbb-aa5a393fae8f/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed905f7-f51e-4b39-8fbb-aa5a393fae8f/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed905f7-f51e-4b39-8fbb-aa5a393fae8f/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_0ed905f7-f51e-4b39-8fbb-aa5a393fae8f/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 514e162b13bdcbe99106b4f79e5a61b8afdae9b478788e06b35106cd952df62f --- 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 20:08:55,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:08:55,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:08:55,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:08:55,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:08:55,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:08:55,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:08:55,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:08:55,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:08:55,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:08:55,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:08:55,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:08:55,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:08:55,635 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:08:55,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:08:55,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:08:55,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:08:55,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:08:55,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:08:55,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:08:55,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:08:55,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:08:55,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:08:55,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:08:55,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:08:55,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:08:55,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:08:55,657 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:08:55,658 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:08:55,659 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:08:55,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:08:55,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:08:55,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:08:55,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:08:55,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:08:55,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:08:55,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:08:55,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:08:55,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:08:55,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:08:55,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:08:55,681 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed905f7-f51e-4b39-8fbb-aa5a393fae8f/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:08:55,718 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:08:55,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:08:55,719 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:08:55,719 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:08:55,720 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:08:55,720 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:08:55,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:08:55,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:08:55,722 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:08:55,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:08:55,722 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:08:55,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:08:55,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:08:55,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:08:55,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:08:55,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:08:55,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:08:55,724 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:08:55,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:08:55,725 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:08:55,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:08:55,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:08:55,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:08:55,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:08:55,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:08:55,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:08:55,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:08:55,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:08:55,727 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:08:55,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:08:55,728 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:08:55,728 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:08:55,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:08:55,728 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_0ed905f7-f51e-4b39-8fbb-aa5a393fae8f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed905f7-f51e-4b39-8fbb-aa5a393fae8f/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 514e162b13bdcbe99106b4f79e5a61b8afdae9b478788e06b35106cd952df62f [2022-11-02 20:08:56,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:08:56,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:08:56,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:08:56,102 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:08:56,103 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:08:56,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed905f7-f51e-4b39-8fbb-aa5a393fae8f/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2022-11-02 20:08:56,186 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed905f7-f51e-4b39-8fbb-aa5a393fae8f/bin/uautomizer-Dbtcem3rbc/data/55f91e967/294c6a9ec43e407494cc5897e6f6389d/FLAG47fbdf3bc [2022-11-02 20:08:56,715 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:08:56,716 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed905f7-f51e-4b39-8fbb-aa5a393fae8f/sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2022-11-02 20:08:56,726 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed905f7-f51e-4b39-8fbb-aa5a393fae8f/bin/uautomizer-Dbtcem3rbc/data/55f91e967/294c6a9ec43e407494cc5897e6f6389d/FLAG47fbdf3bc [2022-11-02 20:08:57,026 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed905f7-f51e-4b39-8fbb-aa5a393fae8f/bin/uautomizer-Dbtcem3rbc/data/55f91e967/294c6a9ec43e407494cc5897e6f6389d [2022-11-02 20:08:57,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:08:57,031 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:08:57,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:08:57,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:08:57,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:08:57,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:08:57" (1/1) ... [2022-11-02 20:08:57,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@145fe86e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:57, skipping insertion in model container [2022-11-02 20:08:57,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:08:57" (1/1) ... [2022-11-02 20:08:57,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:08:57,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:08:57,309 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_0ed905f7-f51e-4b39-8fbb-aa5a393fae8f/sv-benchmarks/c/weaver/chl-node-symm.wvr.c[3305,3318] [2022-11-02 20:08:57,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:08:57,335 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:08:57,361 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_0ed905f7-f51e-4b39-8fbb-aa5a393fae8f/sv-benchmarks/c/weaver/chl-node-symm.wvr.c[3305,3318] [2022-11-02 20:08:57,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:08:57,383 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:08:57,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:57 WrapperNode [2022-11-02 20:08:57,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:08:57,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:08:57,385 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:08:57,385 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:08:57,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:57" (1/1) ... [2022-11-02 20:08:57,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:57" (1/1) ... [2022-11-02 20:08:57,443 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 314 [2022-11-02 20:08:57,444 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:08:57,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:08:57,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:08:57,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:08:57,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:57" (1/1) ... [2022-11-02 20:08:57,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:57" (1/1) ... [2022-11-02 20:08:57,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:57" (1/1) ... [2022-11-02 20:08:57,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:57" (1/1) ... [2022-11-02 20:08:57,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:57" (1/1) ... [2022-11-02 20:08:57,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:57" (1/1) ... [2022-11-02 20:08:57,487 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:57" (1/1) ... [2022-11-02 20:08:57,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:57" (1/1) ... [2022-11-02 20:08:57,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:08:57,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:08:57,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:08:57,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:08:57,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:57" (1/1) ... [2022-11-02 20:08:57,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:08:57,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed905f7-f51e-4b39-8fbb-aa5a393fae8f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:57,541 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed905f7-f51e-4b39-8fbb-aa5a393fae8f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:08:57,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed905f7-f51e-4b39-8fbb-aa5a393fae8f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:08:57,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:08:57,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:08:57,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:08:57,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:08:57,615 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:08:57,615 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:08:57,615 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:08:57,617 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:08:57,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:08:57,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:08:57,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:08:57,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:08:57,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:08:57,620 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 20:08:57,782 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:08:57,784 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:08:58,408 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:08:58,424 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:08:58,424 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-02 20:08:58,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:08:58 BoogieIcfgContainer [2022-11-02 20:08:58,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:08:58,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:08:58,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:08:58,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:08:58,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:08:57" (1/3) ... [2022-11-02 20:08:58,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b4c030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:08:58, skipping insertion in model container [2022-11-02 20:08:58,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:57" (2/3) ... [2022-11-02 20:08:58,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b4c030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:08:58, skipping insertion in model container [2022-11-02 20:08:58,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:08:58" (3/3) ... [2022-11-02 20:08:58,453 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2022-11-02 20:08:58,478 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:08:58,495 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:08:58,495 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:08:58,495 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:08:58,744 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:08:58,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 385 places, 414 transitions, 844 flow [2022-11-02 20:08:58,989 INFO L130 PetriNetUnfolder]: 36/412 cut-off events. [2022-11-02 20:08:58,989 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:08:58,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 412 events. 36/412 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 475 event pairs, 0 based on Foata normal form. 0/375 useless extension candidates. Maximal degree in co-relation 303. Up to 2 conditions per place. [2022-11-02 20:08:59,000 INFO L82 GeneralOperation]: Start removeDead. Operand has 385 places, 414 transitions, 844 flow [2022-11-02 20:08:59,009 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 374 places, 403 transitions, 818 flow [2022-11-02 20:08:59,019 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:08:59,026 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;@228b4d6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:08:59,026 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-02 20:08:59,111 INFO L130 PetriNetUnfolder]: 36/402 cut-off events. [2022-11-02 20:08:59,111 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:08:59,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:08:59,112 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:08:59,113 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:08:59,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:59,119 INFO L85 PathProgramCache]: Analyzing trace with hash -107699594, now seen corresponding path program 1 times [2022-11-02 20:08:59,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:59,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164861729] [2022-11-02 20:08:59,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:59,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:59,630 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 20:08:59,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:59,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164861729] [2022-11-02 20:08:59,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164861729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:59,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:59,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:08:59,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012977640] [2022-11-02 20:08:59,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:59,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:08:59,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:59,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:08:59,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:08:59,695 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 414 [2022-11-02 20:08:59,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 403 transitions, 818 flow. Second operand has 2 states, 2 states have (on average 391.5) internal successors, (783), 2 states have internal predecessors, (783), 0 states have call successors, (0), 0 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 20:08:59,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:08:59,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 414 [2022-11-02 20:08:59,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:08:59,834 INFO L130 PetriNetUnfolder]: 16/383 cut-off events. [2022-11-02 20:08:59,834 INFO L131 PetriNetUnfolder]: For 8/9 co-relation queries the response was YES. [2022-11-02 20:08:59,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 383 events. 16/383 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 460 event pairs, 0 based on Foata normal form. 21/372 useless extension candidates. Maximal degree in co-relation 287. Up to 5 conditions per place. [2022-11-02 20:08:59,841 INFO L137 encePairwiseOnDemand]: 394/414 looper letters, 4 selfloop transitions, 0 changer transitions 12/383 dead transitions. [2022-11-02 20:08:59,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 383 transitions, 786 flow [2022-11-02 20:08:59,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:08:59,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:08:59,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 802 transitions. [2022-11-02 20:08:59,863 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9685990338164251 [2022-11-02 20:08:59,864 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 802 transitions. [2022-11-02 20:08:59,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 802 transitions. [2022-11-02 20:08:59,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:08:59,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 802 transitions. [2022-11-02 20:08:59,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 401.0) internal successors, (802), 2 states have internal predecessors, (802), 0 states have call successors, (0), 0 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 20:08:59,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 414.0) internal successors, (1242), 3 states have internal predecessors, (1242), 0 states have call successors, (0), 0 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 20:08:59,896 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 414.0) internal successors, (1242), 3 states have internal predecessors, (1242), 0 states have call successors, (0), 0 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 20:08:59,898 INFO L175 Difference]: Start difference. First operand has 374 places, 403 transitions, 818 flow. Second operand 2 states and 802 transitions. [2022-11-02 20:08:59,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 383 transitions, 786 flow [2022-11-02 20:08:59,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 383 transitions, 778 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:08:59,917 INFO L231 Difference]: Finished difference. Result has 371 places, 371 transitions, 746 flow [2022-11-02 20:08:59,920 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=746, PETRI_PLACES=371, PETRI_TRANSITIONS=371} [2022-11-02 20:08:59,924 INFO L287 CegarLoopForPetriNet]: 374 programPoint places, -3 predicate places. [2022-11-02 20:08:59,924 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 371 transitions, 746 flow [2022-11-02 20:08:59,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 391.5) internal successors, (783), 2 states have internal predecessors, (783), 0 states have call successors, (0), 0 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 20:08:59,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:08:59,926 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:08:59,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:08:59,926 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:08:59,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:59,928 INFO L85 PathProgramCache]: Analyzing trace with hash -2041905993, now seen corresponding path program 1 times [2022-11-02 20:08:59,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:59,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518219316] [2022-11-02 20:08:59,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:59,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:09:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:00,272 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 20:09:00,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:09:00,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518219316] [2022-11-02 20:09:00,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518219316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:00,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:00,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:09:00,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366047532] [2022-11-02 20:09:00,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:00,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:09:00,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:09:00,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:09:00,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:09:00,287 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 382 out of 414 [2022-11-02 20:09:00,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 371 transitions, 746 flow. Second operand has 3 states, 3 states have (on average 384.6666666666667) internal successors, (1154), 3 states have internal predecessors, (1154), 0 states have call successors, (0), 0 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 20:09:00,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:09:00,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 382 of 414 [2022-11-02 20:09:00,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:09:00,440 INFO L130 PetriNetUnfolder]: 31/508 cut-off events. [2022-11-02 20:09:00,440 INFO L131 PetriNetUnfolder]: For 2/9 co-relation queries the response was YES. [2022-11-02 20:09:00,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 508 events. 31/508 cut-off events. For 2/9 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1303 event pairs, 5 based on Foata normal form. 1/476 useless extension candidates. Maximal degree in co-relation 546. Up to 22 conditions per place. [2022-11-02 20:09:00,444 INFO L137 encePairwiseOnDemand]: 410/414 looper letters, 11 selfloop transitions, 3 changer transitions 0/374 dead transitions. [2022-11-02 20:09:00,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 374 transitions, 781 flow [2022-11-02 20:09:00,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:09:00,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:09:00,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1161 transitions. [2022-11-02 20:09:00,448 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9347826086956522 [2022-11-02 20:09:00,448 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1161 transitions. [2022-11-02 20:09:00,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1161 transitions. [2022-11-02 20:09:00,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:09:00,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1161 transitions. [2022-11-02 20:09:00,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 387.0) internal successors, (1161), 3 states have internal predecessors, (1161), 0 states have call successors, (0), 0 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 20:09:00,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:00,456 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:00,456 INFO L175 Difference]: Start difference. First operand has 371 places, 371 transitions, 746 flow. Second operand 3 states and 1161 transitions. [2022-11-02 20:09:00,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 374 transitions, 781 flow [2022-11-02 20:09:00,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 374 transitions, 781 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:09:00,465 INFO L231 Difference]: Finished difference. Result has 363 places, 373 transitions, 768 flow [2022-11-02 20:09:00,465 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=768, PETRI_PLACES=363, PETRI_TRANSITIONS=373} [2022-11-02 20:09:00,466 INFO L287 CegarLoopForPetriNet]: 374 programPoint places, -11 predicate places. [2022-11-02 20:09:00,466 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 373 transitions, 768 flow [2022-11-02 20:09:00,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 384.6666666666667) internal successors, (1154), 3 states have internal predecessors, (1154), 0 states have call successors, (0), 0 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 20:09:00,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:09:00,468 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:00,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:09:00,468 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:09:00,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:00,469 INFO L85 PathProgramCache]: Analyzing trace with hash -513583859, now seen corresponding path program 1 times [2022-11-02 20:09:00,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:09:00,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403007921] [2022-11-02 20:09:00,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:00,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:09:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:00,655 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 20:09:00,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:09:00,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403007921] [2022-11-02 20:09:00,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403007921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:00,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:00,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:09:00,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329064734] [2022-11-02 20:09:00,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:00,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:09:00,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:09:00,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:09:00,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:09:00,660 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 382 out of 414 [2022-11-02 20:09:00,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 373 transitions, 768 flow. Second operand has 3 states, 3 states have (on average 384.6666666666667) internal successors, (1154), 3 states have internal predecessors, (1154), 0 states have call successors, (0), 0 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 20:09:00,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:09:00,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 382 of 414 [2022-11-02 20:09:00,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:09:00,757 INFO L130 PetriNetUnfolder]: 27/448 cut-off events. [2022-11-02 20:09:00,757 INFO L131 PetriNetUnfolder]: For 12/13 co-relation queries the response was YES. [2022-11-02 20:09:00,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 448 events. 27/448 cut-off events. For 12/13 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 790 event pairs, 5 based on Foata normal form. 0/418 useless extension candidates. Maximal degree in co-relation 488. Up to 22 conditions per place. [2022-11-02 20:09:00,761 INFO L137 encePairwiseOnDemand]: 410/414 looper letters, 11 selfloop transitions, 3 changer transitions 0/376 dead transitions. [2022-11-02 20:09:00,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 376 transitions, 803 flow [2022-11-02 20:09:00,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:09:00,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:09:00,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1161 transitions. [2022-11-02 20:09:00,764 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9347826086956522 [2022-11-02 20:09:00,765 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1161 transitions. [2022-11-02 20:09:00,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1161 transitions. [2022-11-02 20:09:00,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:09:00,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1161 transitions. [2022-11-02 20:09:00,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 387.0) internal successors, (1161), 3 states have internal predecessors, (1161), 0 states have call successors, (0), 0 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 20:09:00,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:00,772 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:00,772 INFO L175 Difference]: Start difference. First operand has 363 places, 373 transitions, 768 flow. Second operand 3 states and 1161 transitions. [2022-11-02 20:09:00,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 376 transitions, 803 flow [2022-11-02 20:09:00,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 376 transitions, 797 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:09:00,780 INFO L231 Difference]: Finished difference. Result has 365 places, 375 transitions, 784 flow [2022-11-02 20:09:00,781 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=784, PETRI_PLACES=365, PETRI_TRANSITIONS=375} [2022-11-02 20:09:00,782 INFO L287 CegarLoopForPetriNet]: 374 programPoint places, -9 predicate places. [2022-11-02 20:09:00,782 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 375 transitions, 784 flow [2022-11-02 20:09:00,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 384.6666666666667) internal successors, (1154), 3 states have internal predecessors, (1154), 0 states have call successors, (0), 0 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 20:09:00,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:09:00,783 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:00,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:09:00,784 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:09:00,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:00,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1693829105, now seen corresponding path program 1 times [2022-11-02 20:09:00,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:09:00,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87323538] [2022-11-02 20:09:00,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:00,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:09:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:01,449 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 20:09:01,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:09:01,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87323538] [2022-11-02 20:09:01,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87323538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:01,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:01,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:09:01,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274647129] [2022-11-02 20:09:01,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:01,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:09:01,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:09:01,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:09:01,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:09:01,463 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-11-02 20:09:01,467 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 375 transitions, 784 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 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 20:09:01,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:09:01,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-11-02 20:09:01,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:09:04,669 INFO L130 PetriNetUnfolder]: 1644/8845 cut-off events. [2022-11-02 20:09:04,670 INFO L131 PetriNetUnfolder]: For 167/197 co-relation queries the response was YES. [2022-11-02 20:09:04,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11988 conditions, 8845 events. 1644/8845 cut-off events. For 167/197 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 100483 event pairs, 501 based on Foata normal form. 3/8292 useless extension candidates. Maximal degree in co-relation 11982. Up to 1102 conditions per place. [2022-11-02 20:09:04,736 INFO L137 encePairwiseOnDemand]: 397/414 looper letters, 242 selfloop transitions, 35 changer transitions 0/587 dead transitions. [2022-11-02 20:09:04,736 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 587 transitions, 1786 flow [2022-11-02 20:09:04,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:09:04,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-02 20:09:04,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 7823 transitions. [2022-11-02 20:09:04,753 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8215710985087167 [2022-11-02 20:09:04,753 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 7823 transitions. [2022-11-02 20:09:04,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 7823 transitions. [2022-11-02 20:09:04,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:09:04,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 7823 transitions. [2022-11-02 20:09:04,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 340.1304347826087) internal successors, (7823), 23 states have internal predecessors, (7823), 0 states have call successors, (0), 0 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 20:09:04,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 414.0) internal successors, (9936), 24 states have internal predecessors, (9936), 0 states have call successors, (0), 0 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 20:09:04,803 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 414.0) internal successors, (9936), 24 states have internal predecessors, (9936), 0 states have call successors, (0), 0 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 20:09:04,803 INFO L175 Difference]: Start difference. First operand has 365 places, 375 transitions, 784 flow. Second operand 23 states and 7823 transitions. [2022-11-02 20:09:04,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 587 transitions, 1786 flow [2022-11-02 20:09:04,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 587 transitions, 1780 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:09:04,832 INFO L231 Difference]: Finished difference. Result has 404 places, 409 transitions, 1017 flow [2022-11-02 20:09:04,832 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1017, PETRI_PLACES=404, PETRI_TRANSITIONS=409} [2022-11-02 20:09:04,833 INFO L287 CegarLoopForPetriNet]: 374 programPoint places, 30 predicate places. [2022-11-02 20:09:04,833 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 409 transitions, 1017 flow [2022-11-02 20:09:04,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 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 20:09:04,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:09:04,836 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:04,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:09:04,836 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:09:04,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:04,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1538060769, now seen corresponding path program 2 times [2022-11-02 20:09:04,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:09:04,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956161373] [2022-11-02 20:09:04,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:04,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:09:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:05,348 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 20:09:05,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:09:05,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956161373] [2022-11-02 20:09:05,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956161373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:05,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:05,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:09:05,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574756747] [2022-11-02 20:09:05,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:05,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:09:05,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:09:05,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:09:05,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:09:05,356 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-11-02 20:09:05,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 409 transitions, 1017 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 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 20:09:05,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:09:05,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-11-02 20:09:05,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:09:08,717 INFO L130 PetriNetUnfolder]: 1632/9842 cut-off events. [2022-11-02 20:09:08,717 INFO L131 PetriNetUnfolder]: For 1531/1549 co-relation queries the response was YES. [2022-11-02 20:09:08,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14653 conditions, 9842 events. 1632/9842 cut-off events. For 1531/1549 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 116016 event pairs, 44 based on Foata normal form. 2/9459 useless extension candidates. Maximal degree in co-relation 14628. Up to 1200 conditions per place. [2022-11-02 20:09:08,833 INFO L137 encePairwiseOnDemand]: 398/414 looper letters, 290 selfloop transitions, 34 changer transitions 0/634 dead transitions. [2022-11-02 20:09:08,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 634 transitions, 2538 flow [2022-11-02 20:09:08,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:09:08,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-02 20:09:08,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 7793 transitions. [2022-11-02 20:09:08,850 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.81842049989498 [2022-11-02 20:09:08,850 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 7793 transitions. [2022-11-02 20:09:08,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 7793 transitions. [2022-11-02 20:09:08,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:09:08,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 7793 transitions. [2022-11-02 20:09:08,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 338.82608695652175) internal successors, (7793), 23 states have internal predecessors, (7793), 0 states have call successors, (0), 0 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 20:09:08,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 414.0) internal successors, (9936), 24 states have internal predecessors, (9936), 0 states have call successors, (0), 0 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 20:09:08,908 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 414.0) internal successors, (9936), 24 states have internal predecessors, (9936), 0 states have call successors, (0), 0 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 20:09:08,909 INFO L175 Difference]: Start difference. First operand has 404 places, 409 transitions, 1017 flow. Second operand 23 states and 7793 transitions. [2022-11-02 20:09:08,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 634 transitions, 2538 flow [2022-11-02 20:09:08,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 634 transitions, 2538 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:09:08,938 INFO L231 Difference]: Finished difference. Result has 433 places, 430 transitions, 1196 flow [2022-11-02 20:09:08,939 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1196, PETRI_PLACES=433, PETRI_TRANSITIONS=430} [2022-11-02 20:09:08,940 INFO L287 CegarLoopForPetriNet]: 374 programPoint places, 59 predicate places. [2022-11-02 20:09:08,940 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 430 transitions, 1196 flow [2022-11-02 20:09:08,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 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 20:09:08,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:09:08,942 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:08,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:09:08,942 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:09:08,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:08,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1937241171, now seen corresponding path program 3 times [2022-11-02 20:09:08,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:09:08,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804479318] [2022-11-02 20:09:08,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:08,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:09:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:09,457 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 20:09:09,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:09:09,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804479318] [2022-11-02 20:09:09,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804479318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:09,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:09,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:09:09,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067254300] [2022-11-02 20:09:09,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:09,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:09:09,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:09:09,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:09:09,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:09:09,465 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-11-02 20:09:09,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 430 transitions, 1196 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 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 20:09:09,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:09:09,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-11-02 20:09:09,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:09:14,216 INFO L130 PetriNetUnfolder]: 2314/14945 cut-off events. [2022-11-02 20:09:14,216 INFO L131 PetriNetUnfolder]: For 3666/3700 co-relation queries the response was YES. [2022-11-02 20:09:14,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22627 conditions, 14945 events. 2314/14945 cut-off events. For 3666/3700 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 194126 event pairs, 557 based on Foata normal form. 28/14408 useless extension candidates. Maximal degree in co-relation 22594. Up to 1159 conditions per place. [2022-11-02 20:09:14,369 INFO L137 encePairwiseOnDemand]: 397/414 looper letters, 334 selfloop transitions, 61 changer transitions 0/705 dead transitions. [2022-11-02 20:09:14,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 705 transitions, 3020 flow [2022-11-02 20:09:14,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-02 20:09:14,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-02 20:09:14,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 9526 transitions. [2022-11-02 20:09:14,391 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8217736369910283 [2022-11-02 20:09:14,391 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 9526 transitions. [2022-11-02 20:09:14,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 9526 transitions. [2022-11-02 20:09:14,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:09:14,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 9526 transitions. [2022-11-02 20:09:14,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 340.2142857142857) internal successors, (9526), 28 states have internal predecessors, (9526), 0 states have call successors, (0), 0 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 20:09:14,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 414.0) internal successors, (12006), 29 states have internal predecessors, (12006), 0 states have call successors, (0), 0 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 20:09:14,443 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 414.0) internal successors, (12006), 29 states have internal predecessors, (12006), 0 states have call successors, (0), 0 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 20:09:14,443 INFO L175 Difference]: Start difference. First operand has 433 places, 430 transitions, 1196 flow. Second operand 28 states and 9526 transitions. [2022-11-02 20:09:14,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 705 transitions, 3020 flow [2022-11-02 20:09:14,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 705 transitions, 2849 flow, removed 17 selfloop flow, removed 5 redundant places. [2022-11-02 20:09:14,488 INFO L231 Difference]: Finished difference. Result has 468 places, 455 transitions, 1505 flow [2022-11-02 20:09:14,489 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1505, PETRI_PLACES=468, PETRI_TRANSITIONS=455} [2022-11-02 20:09:14,490 INFO L287 CegarLoopForPetriNet]: 374 programPoint places, 94 predicate places. [2022-11-02 20:09:14,491 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 455 transitions, 1505 flow [2022-11-02 20:09:14,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 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 20:09:14,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:09:14,492 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:14,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:09:14,493 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:09:14,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:14,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1100639273, now seen corresponding path program 4 times [2022-11-02 20:09:14,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:09:14,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218051377] [2022-11-02 20:09:14,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:14,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:09:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:14,909 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 20:09:14,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:09:14,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218051377] [2022-11-02 20:09:14,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218051377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:14,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:14,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:09:14,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123521870] [2022-11-02 20:09:14,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:14,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:09:14,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:09:14,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:09:14,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:09:14,916 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-11-02 20:09:14,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 455 transitions, 1505 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 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 20:09:14,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:09:14,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-11-02 20:09:14,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:09:19,461 INFO L130 PetriNetUnfolder]: 2351/14879 cut-off events. [2022-11-02 20:09:19,461 INFO L131 PetriNetUnfolder]: For 7522/7556 co-relation queries the response was YES. [2022-11-02 20:09:19,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24004 conditions, 14879 events. 2351/14879 cut-off events. For 7522/7556 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 191331 event pairs, 44 based on Foata normal form. 16/14345 useless extension candidates. Maximal degree in co-relation 23957. Up to 1964 conditions per place. [2022-11-02 20:09:19,648 INFO L137 encePairwiseOnDemand]: 398/414 looper letters, 299 selfloop transitions, 56 changer transitions 0/665 dead transitions. [2022-11-02 20:09:19,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 665 transitions, 3380 flow [2022-11-02 20:09:19,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:09:19,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-02 20:09:19,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 7787 transitions. [2022-11-02 20:09:19,664 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8177903801722327 [2022-11-02 20:09:19,665 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 7787 transitions. [2022-11-02 20:09:19,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 7787 transitions. [2022-11-02 20:09:19,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:09:19,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 7787 transitions. [2022-11-02 20:09:19,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 338.5652173913044) internal successors, (7787), 23 states have internal predecessors, (7787), 0 states have call successors, (0), 0 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 20:09:19,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 414.0) internal successors, (9936), 24 states have internal predecessors, (9936), 0 states have call successors, (0), 0 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 20:09:19,706 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 414.0) internal successors, (9936), 24 states have internal predecessors, (9936), 0 states have call successors, (0), 0 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 20:09:19,706 INFO L175 Difference]: Start difference. First operand has 468 places, 455 transitions, 1505 flow. Second operand 23 states and 7787 transitions. [2022-11-02 20:09:19,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 665 transitions, 3380 flow [2022-11-02 20:09:19,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 665 transitions, 3192 flow, removed 13 selfloop flow, removed 12 redundant places. [2022-11-02 20:09:19,774 INFO L231 Difference]: Finished difference. Result has 488 places, 469 transitions, 1718 flow [2022-11-02 20:09:19,775 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=1422, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1718, PETRI_PLACES=488, PETRI_TRANSITIONS=469} [2022-11-02 20:09:19,776 INFO L287 CegarLoopForPetriNet]: 374 programPoint places, 114 predicate places. [2022-11-02 20:09:19,776 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 469 transitions, 1718 flow [2022-11-02 20:09:19,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 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 20:09:19,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:09:19,778 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:19,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:09:19,779 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:09:19,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:19,779 INFO L85 PathProgramCache]: Analyzing trace with hash 935176303, now seen corresponding path program 5 times [2022-11-02 20:09:19,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:09:19,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834511614] [2022-11-02 20:09:19,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:19,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:09:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:20,339 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 20:09:20,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:09:20,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834511614] [2022-11-02 20:09:20,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834511614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:20,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:20,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:09:20,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910839221] [2022-11-02 20:09:20,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:20,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:09:20,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:09:20,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:09:20,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:09:20,346 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-11-02 20:09:20,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 469 transitions, 1718 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 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 20:09:20,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:09:20,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-11-02 20:09:20,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:09:24,635 INFO L130 PetriNetUnfolder]: 2351/14449 cut-off events. [2022-11-02 20:09:24,636 INFO L131 PetriNetUnfolder]: For 9976/10038 co-relation queries the response was YES. [2022-11-02 20:09:24,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24629 conditions, 14449 events. 2351/14449 cut-off events. For 9976/10038 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 185376 event pairs, 527 based on Foata normal form. 30/13923 useless extension candidates. Maximal degree in co-relation 24572. Up to 1611 conditions per place. [2022-11-02 20:09:24,797 INFO L137 encePairwiseOnDemand]: 397/414 looper letters, 278 selfloop transitions, 69 changer transitions 0/657 dead transitions. [2022-11-02 20:09:24,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 657 transitions, 3345 flow [2022-11-02 20:09:24,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:09:24,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-02 20:09:24,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 7817 transitions. [2022-11-02 20:09:24,807 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8209409787859694 [2022-11-02 20:09:24,807 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 7817 transitions. [2022-11-02 20:09:24,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 7817 transitions. [2022-11-02 20:09:24,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:09:24,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 7817 transitions. [2022-11-02 20:09:24,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 339.8695652173913) internal successors, (7817), 23 states have internal predecessors, (7817), 0 states have call successors, (0), 0 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 20:09:24,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 414.0) internal successors, (9936), 24 states have internal predecessors, (9936), 0 states have call successors, (0), 0 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 20:09:24,837 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 414.0) internal successors, (9936), 24 states have internal predecessors, (9936), 0 states have call successors, (0), 0 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 20:09:24,837 INFO L175 Difference]: Start difference. First operand has 488 places, 469 transitions, 1718 flow. Second operand 23 states and 7817 transitions. [2022-11-02 20:09:24,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 657 transitions, 3345 flow [2022-11-02 20:09:24,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 657 transitions, 3125 flow, removed 26 selfloop flow, removed 12 redundant places. [2022-11-02 20:09:24,915 INFO L231 Difference]: Finished difference. Result has 504 places, 475 transitions, 1849 flow [2022-11-02 20:09:24,916 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=1623, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1849, PETRI_PLACES=504, PETRI_TRANSITIONS=475} [2022-11-02 20:09:24,917 INFO L287 CegarLoopForPetriNet]: 374 programPoint places, 130 predicate places. [2022-11-02 20:09:24,917 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 475 transitions, 1849 flow [2022-11-02 20:09:24,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 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 20:09:24,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:09:24,918 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:24,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:09:24,919 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:09:24,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:24,919 INFO L85 PathProgramCache]: Analyzing trace with hash 2060573035, now seen corresponding path program 6 times [2022-11-02 20:09:24,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:09:24,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21733521] [2022-11-02 20:09:24,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:24,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:09:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:25,281 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 20:09:25,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:09:25,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21733521] [2022-11-02 20:09:25,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21733521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:25,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:25,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:09:25,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334354071] [2022-11-02 20:09:25,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:25,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:09:25,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:09:25,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:09:25,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:09:25,286 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-11-02 20:09:25,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 475 transitions, 1849 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 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 20:09:25,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:09:25,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-11-02 20:09:25,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:09:30,547 INFO L130 PetriNetUnfolder]: 2946/19732 cut-off events. [2022-11-02 20:09:30,547 INFO L131 PetriNetUnfolder]: For 17262/17359 co-relation queries the response was YES. [2022-11-02 20:09:30,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33242 conditions, 19732 events. 2946/19732 cut-off events. For 17262/17359 co-relation queries the response was YES. Maximal size of possible extension queue 697. Compared 272153 event pairs, 352 based on Foata normal form. 25/19030 useless extension candidates. Maximal degree in co-relation 33179. Up to 2301 conditions per place. [2022-11-02 20:09:30,801 INFO L137 encePairwiseOnDemand]: 398/414 looper letters, 341 selfloop transitions, 71 changer transitions 0/722 dead transitions. [2022-11-02 20:09:30,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 722 transitions, 4235 flow [2022-11-02 20:09:30,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-02 20:09:30,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-02 20:09:30,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 8485 transitions. [2022-11-02 20:09:30,815 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8198067632850241 [2022-11-02 20:09:30,816 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 8485 transitions. [2022-11-02 20:09:30,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 8485 transitions. [2022-11-02 20:09:30,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:09:30,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 8485 transitions. [2022-11-02 20:09:30,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 339.4) internal successors, (8485), 25 states have internal predecessors, (8485), 0 states have call successors, (0), 0 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 20:09:30,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 414.0) internal successors, (10764), 26 states have internal predecessors, (10764), 0 states have call successors, (0), 0 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 20:09:30,857 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 414.0) internal successors, (10764), 26 states have internal predecessors, (10764), 0 states have call successors, (0), 0 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 20:09:30,858 INFO L175 Difference]: Start difference. First operand has 504 places, 475 transitions, 1849 flow. Second operand 25 states and 8485 transitions. [2022-11-02 20:09:30,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 722 transitions, 4235 flow [2022-11-02 20:09:30,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 722 transitions, 4000 flow, removed 20 selfloop flow, removed 13 redundant places. [2022-11-02 20:09:30,997 INFO L231 Difference]: Finished difference. Result has 526 places, 507 transitions, 2325 flow [2022-11-02 20:09:30,998 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=1741, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2325, PETRI_PLACES=526, PETRI_TRANSITIONS=507} [2022-11-02 20:09:30,999 INFO L287 CegarLoopForPetriNet]: 374 programPoint places, 152 predicate places. [2022-11-02 20:09:30,999 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 507 transitions, 2325 flow [2022-11-02 20:09:31,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 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 20:09:31,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:09:31,001 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:31,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:09:31,001 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:09:31,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:31,002 INFO L85 PathProgramCache]: Analyzing trace with hash -782352579, now seen corresponding path program 7 times [2022-11-02 20:09:31,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:09:31,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498727959] [2022-11-02 20:09:31,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:31,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:09:31,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:31,488 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 20:09:31,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:09:31,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498727959] [2022-11-02 20:09:31,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498727959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:31,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:31,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:09:31,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964328091] [2022-11-02 20:09:31,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:31,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:09:31,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:09:31,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:09:31,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:09:31,500 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-11-02 20:09:31,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 507 transitions, 2325 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 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 20:09:31,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:09:31,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-11-02 20:09:31,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:09:37,477 INFO L130 PetriNetUnfolder]: 2974/19636 cut-off events. [2022-11-02 20:09:37,477 INFO L131 PetriNetUnfolder]: For 21525/21590 co-relation queries the response was YES. [2022-11-02 20:09:37,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34319 conditions, 19636 events. 2974/19636 cut-off events. For 21525/21590 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 270225 event pairs, 557 based on Foata normal form. 46/18928 useless extension candidates. Maximal degree in co-relation 34245. Up to 1289 conditions per place. [2022-11-02 20:09:37,805 INFO L137 encePairwiseOnDemand]: 395/414 looper letters, 344 selfloop transitions, 128 changer transitions 0/782 dead transitions. [2022-11-02 20:09:37,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 782 transitions, 4757 flow [2022-11-02 20:09:37,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-02 20:09:37,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-02 20:09:37,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 9881 transitions. [2022-11-02 20:09:37,828 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8230051640846243 [2022-11-02 20:09:37,829 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 9881 transitions. [2022-11-02 20:09:37,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 9881 transitions. [2022-11-02 20:09:37,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:09:37,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 9881 transitions. [2022-11-02 20:09:37,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 340.7241379310345) internal successors, (9881), 29 states have internal predecessors, (9881), 0 states have call successors, (0), 0 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 20:09:37,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 414.0) internal successors, (12420), 30 states have internal predecessors, (12420), 0 states have call successors, (0), 0 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 20:09:37,885 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 414.0) internal successors, (12420), 30 states have internal predecessors, (12420), 0 states have call successors, (0), 0 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 20:09:37,885 INFO L175 Difference]: Start difference. First operand has 526 places, 507 transitions, 2325 flow. Second operand 29 states and 9881 transitions. [2022-11-02 20:09:37,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 782 transitions, 4757 flow [2022-11-02 20:09:38,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 782 transitions, 4500 flow, removed 79 selfloop flow, removed 7 redundant places. [2022-11-02 20:09:38,135 INFO L231 Difference]: Finished difference. Result has 559 places, 538 transitions, 2762 flow [2022-11-02 20:09:38,138 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=2154, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2762, PETRI_PLACES=559, PETRI_TRANSITIONS=538} [2022-11-02 20:09:38,139 INFO L287 CegarLoopForPetriNet]: 374 programPoint places, 185 predicate places. [2022-11-02 20:09:38,140 INFO L495 AbstractCegarLoop]: Abstraction has has 559 places, 538 transitions, 2762 flow [2022-11-02 20:09:38,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 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 20:09:38,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:09:38,142 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:38,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:09:38,143 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:09:38,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:38,143 INFO L85 PathProgramCache]: Analyzing trace with hash -371443717, now seen corresponding path program 8 times [2022-11-02 20:09:38,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:09:38,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772420031] [2022-11-02 20:09:38,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:38,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:09:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:38,785 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 20:09:38,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:09:38,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772420031] [2022-11-02 20:09:38,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772420031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:38,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:38,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:09:38,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052056384] [2022-11-02 20:09:38,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:38,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:09:38,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:09:38,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:09:38,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:09:38,791 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-11-02 20:09:38,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 538 transitions, 2762 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 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 20:09:38,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:09:38,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-11-02 20:09:38,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:09:45,722 INFO L130 PetriNetUnfolder]: 3717/24666 cut-off events. [2022-11-02 20:09:45,722 INFO L131 PetriNetUnfolder]: For 33813/33909 co-relation queries the response was YES. [2022-11-02 20:09:46,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44916 conditions, 24666 events. 3717/24666 cut-off events. For 33813/33909 co-relation queries the response was YES. Maximal size of possible extension queue 848. Compared 354311 event pairs, 612 based on Foata normal form. 59/23749 useless extension candidates. Maximal degree in co-relation 44830. Up to 1760 conditions per place. [2022-11-02 20:09:46,202 INFO L137 encePairwiseOnDemand]: 397/414 looper letters, 367 selfloop transitions, 146 changer transitions 0/823 dead transitions. [2022-11-02 20:09:46,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 823 transitions, 5719 flow [2022-11-02 20:09:46,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-02 20:09:46,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-02 20:09:46,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 9866 transitions. [2022-11-02 20:09:46,217 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8217557887722805 [2022-11-02 20:09:46,217 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 9866 transitions. [2022-11-02 20:09:46,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 9866 transitions. [2022-11-02 20:09:46,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:09:46,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 9866 transitions. [2022-11-02 20:09:46,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 340.2068965517241) internal successors, (9866), 29 states have internal predecessors, (9866), 0 states have call successors, (0), 0 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 20:09:46,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 414.0) internal successors, (12420), 30 states have internal predecessors, (12420), 0 states have call successors, (0), 0 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 20:09:46,260 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 414.0) internal successors, (12420), 30 states have internal predecessors, (12420), 0 states have call successors, (0), 0 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 20:09:46,260 INFO L175 Difference]: Start difference. First operand has 559 places, 538 transitions, 2762 flow. Second operand 29 states and 9866 transitions. [2022-11-02 20:09:46,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 823 transitions, 5719 flow [2022-11-02 20:09:46,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 823 transitions, 5518 flow, removed 17 selfloop flow, removed 8 redundant places. [2022-11-02 20:09:46,885 INFO L231 Difference]: Finished difference. Result has 602 places, 581 transitions, 3683 flow [2022-11-02 20:09:46,885 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=2623, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3683, PETRI_PLACES=602, PETRI_TRANSITIONS=581} [2022-11-02 20:09:46,886 INFO L287 CegarLoopForPetriNet]: 374 programPoint places, 228 predicate places. [2022-11-02 20:09:46,886 INFO L495 AbstractCegarLoop]: Abstraction has has 602 places, 581 transitions, 3683 flow [2022-11-02 20:09:46,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 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 20:09:46,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:09:46,887 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:46,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:09:46,888 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:09:46,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:46,888 INFO L85 PathProgramCache]: Analyzing trace with hash -984593389, now seen corresponding path program 9 times [2022-11-02 20:09:46,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:09:46,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847863517] [2022-11-02 20:09:46,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:46,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:09:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:47,314 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 20:09:47,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:09:47,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847863517] [2022-11-02 20:09:47,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847863517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:47,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:47,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:09:47,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838340273] [2022-11-02 20:09:47,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:47,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:09:47,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:09:47,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:09:47,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:09:47,320 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-11-02 20:09:47,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 602 places, 581 transitions, 3683 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 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 20:09:47,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:09:47,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-11-02 20:09:47,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:09:55,305 INFO L130 PetriNetUnfolder]: 3663/23390 cut-off events. [2022-11-02 20:09:55,305 INFO L131 PetriNetUnfolder]: For 47398/47518 co-relation queries the response was YES. [2022-11-02 20:09:55,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46134 conditions, 23390 events. 3663/23390 cut-off events. For 47398/47518 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 331166 event pairs, 380 based on Foata normal form. 63/22613 useless extension candidates. Maximal degree in co-relation 46024. Up to 2157 conditions per place. [2022-11-02 20:09:56,042 INFO L137 encePairwiseOnDemand]: 397/414 looper letters, 391 selfloop transitions, 125 changer transitions 0/826 dead transitions. [2022-11-02 20:09:56,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 826 transitions, 6532 flow [2022-11-02 20:09:56,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 20:09:56,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-02 20:09:56,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 9189 transitions. [2022-11-02 20:09:56,052 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.822061191626409 [2022-11-02 20:09:56,053 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 9189 transitions. [2022-11-02 20:09:56,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 9189 transitions. [2022-11-02 20:09:56,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:09:56,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 9189 transitions. [2022-11-02 20:09:56,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 340.3333333333333) internal successors, (9189), 27 states have internal predecessors, (9189), 0 states have call successors, (0), 0 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 20:09:56,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 414.0) internal successors, (11592), 28 states have internal predecessors, (11592), 0 states have call successors, (0), 0 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 20:09:56,083 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 414.0) internal successors, (11592), 28 states have internal predecessors, (11592), 0 states have call successors, (0), 0 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 20:09:56,083 INFO L175 Difference]: Start difference. First operand has 602 places, 581 transitions, 3683 flow. Second operand 27 states and 9189 transitions. [2022-11-02 20:09:56,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 628 places, 826 transitions, 6532 flow [2022-11-02 20:09:56,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 826 transitions, 6110 flow, removed 179 selfloop flow, removed 3 redundant places. [2022-11-02 20:09:56,472 INFO L231 Difference]: Finished difference. Result has 629 places, 586 transitions, 3836 flow [2022-11-02 20:09:56,473 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=3441, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=3836, PETRI_PLACES=629, PETRI_TRANSITIONS=586} [2022-11-02 20:09:56,474 INFO L287 CegarLoopForPetriNet]: 374 programPoint places, 255 predicate places. [2022-11-02 20:09:56,474 INFO L495 AbstractCegarLoop]: Abstraction has has 629 places, 586 transitions, 3836 flow [2022-11-02 20:09:56,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 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 20:09:56,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:09:56,476 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:56,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:09:56,477 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:09:56,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:56,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1504035169, now seen corresponding path program 10 times [2022-11-02 20:09:56,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:09:56,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854993613] [2022-11-02 20:09:56,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:56,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:09:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:56,852 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 20:09:56,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:09:56,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854993613] [2022-11-02 20:09:56,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854993613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:56,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:56,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:09:56,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352911807] [2022-11-02 20:09:56,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:56,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:09:56,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:09:56,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:09:56,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:09:56,857 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-11-02 20:09:56,860 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 586 transitions, 3836 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 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 20:09:56,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:09:56,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-11-02 20:09:56,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand