./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee7da2c-ca39-4f57-ad1f-0f0d96420f7c/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee7da2c-ca39-4f57-ad1f-0f0d96420f7c/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_eee7da2c-ca39-4f57-ad1f-0f0d96420f7c/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee7da2c-ca39-4f57-ad1f-0f0d96420f7c/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee7da2c-ca39-4f57-ad1f-0f0d96420f7c/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_eee7da2c-ca39-4f57-ad1f-0f0d96420f7c/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 c870162e8691a06e8bb6a8083be9eaf3f7ddc94357fb302a6e1fdd1b7aa873f8 --- 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 20:11:45,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:11:45,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:11:45,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:11:45,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:11:45,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:11:45,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:11:45,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:11:45,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:11:45,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:11:45,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:11:45,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:11:45,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:11:45,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:11:45,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:11:45,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:11:45,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:11:45,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:11:45,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:11:45,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:11:45,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:11:45,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:11:45,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:11:45,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:11:45,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:11:45,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:11:45,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:11:45,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:11:45,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:11:45,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:11:45,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:11:45,670 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:11:45,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:11:45,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:11:45,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:11:45,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:11:45,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:11:45,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:11:45,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:11:45,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:11:45,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:11:45,683 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee7da2c-ca39-4f57-ad1f-0f0d96420f7c/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:11:45,732 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:11:45,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:11:45,733 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:11:45,733 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:11:45,734 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:11:45,735 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:11:45,736 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:11:45,736 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:11:45,736 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:11:45,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:11:45,738 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:11:45,738 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:11:45,738 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:11:45,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:11:45,739 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:11:45,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:11:45,739 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:11:45,739 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:11:45,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:11:45,740 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:11:45,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:11:45,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:11:45,741 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:11:45,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:11:45,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:11:45,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:11:45,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:11:45,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:11:45,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:11:45,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:11:45,744 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:11:45,744 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:11:45,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:11:45,745 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_eee7da2c-ca39-4f57-ad1f-0f0d96420f7c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee7da2c-ca39-4f57-ad1f-0f0d96420f7c/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c870162e8691a06e8bb6a8083be9eaf3f7ddc94357fb302a6e1fdd1b7aa873f8 [2022-11-02 20:11:46,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:11:46,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:11:46,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:11:46,063 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:11:46,064 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:11:46,066 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee7da2c-ca39-4f57-ad1f-0f0d96420f7c/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2022-11-02 20:11:46,149 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee7da2c-ca39-4f57-ad1f-0f0d96420f7c/bin/uautomizer-Dbtcem3rbc/data/c0e71578c/4fa5b0f32a164c4a90fcf3fc5c45986d/FLAGfef7a99fc [2022-11-02 20:11:46,678 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:11:46,679 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee7da2c-ca39-4f57-ad1f-0f0d96420f7c/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2022-11-02 20:11:46,687 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee7da2c-ca39-4f57-ad1f-0f0d96420f7c/bin/uautomizer-Dbtcem3rbc/data/c0e71578c/4fa5b0f32a164c4a90fcf3fc5c45986d/FLAGfef7a99fc [2022-11-02 20:11:47,023 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee7da2c-ca39-4f57-ad1f-0f0d96420f7c/bin/uautomizer-Dbtcem3rbc/data/c0e71578c/4fa5b0f32a164c4a90fcf3fc5c45986d [2022-11-02 20:11:47,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:11:47,031 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:11:47,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:11:47,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:11:47,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:11:47,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:11:47" (1/1) ... [2022-11-02 20:11:47,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e55b80e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:47, skipping insertion in model container [2022-11-02 20:11:47,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:11:47" (1/1) ... [2022-11-02 20:11:47,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:11:47,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:11:47,403 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_eee7da2c-ca39-4f57-ad1f-0f0d96420f7c/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c[2755,2768] [2022-11-02 20:11:47,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:11:47,425 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:11:47,452 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_eee7da2c-ca39-4f57-ad1f-0f0d96420f7c/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c[2755,2768] [2022-11-02 20:11:47,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:11:47,473 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:11:47,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:47 WrapperNode [2022-11-02 20:11:47,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:11:47,476 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:11:47,476 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:11:47,476 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:11:47,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:47" (1/1) ... [2022-11-02 20:11:47,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:47" (1/1) ... [2022-11-02 20:11:47,529 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 17, calls inlined = 31, statements flattened = 277 [2022-11-02 20:11:47,529 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:11:47,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:11:47,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:11:47,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:11:47,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:47" (1/1) ... [2022-11-02 20:11:47,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:47" (1/1) ... [2022-11-02 20:11:47,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:47" (1/1) ... [2022-11-02 20:11:47,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:47" (1/1) ... [2022-11-02 20:11:47,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:47" (1/1) ... [2022-11-02 20:11:47,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:47" (1/1) ... [2022-11-02 20:11:47,564 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:47" (1/1) ... [2022-11-02 20:11:47,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:47" (1/1) ... [2022-11-02 20:11:47,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:11:47,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:11:47,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:11:47,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:11:47,573 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:47" (1/1) ... [2022-11-02 20:11:47,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:11:47,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee7da2c-ca39-4f57-ad1f-0f0d96420f7c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:11:47,609 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee7da2c-ca39-4f57-ad1f-0f0d96420f7c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:11:47,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee7da2c-ca39-4f57-ad1f-0f0d96420f7c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:11:47,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:11:47,669 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:11:47,670 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:11:47,670 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:11:47,670 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:11:47,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:11:47,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:11:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:11:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:11:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:11:47,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:11:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:11:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:11:47,676 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 20:11:47,862 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:11:47,864 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:11:48,635 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:11:48,653 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:11:48,653 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-02 20:11:48,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:11:48 BoogieIcfgContainer [2022-11-02 20:11:48,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:11:48,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:11:48,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:11:48,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:11:48,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:11:47" (1/3) ... [2022-11-02 20:11:48,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b80f606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:11:48, skipping insertion in model container [2022-11-02 20:11:48,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:47" (2/3) ... [2022-11-02 20:11:48,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b80f606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:11:48, skipping insertion in model container [2022-11-02 20:11:48,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:11:48" (3/3) ... [2022-11-02 20:11:48,674 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2022-11-02 20:11:48,685 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:11:48,698 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:11:48,698 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:11:48,699 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:11:48,877 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:11:48,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 375 places, 396 transitions, 808 flow [2022-11-02 20:11:49,215 INFO L130 PetriNetUnfolder]: 28/394 cut-off events. [2022-11-02 20:11:49,215 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:11:49,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 394 events. 28/394 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 915 event pairs, 0 based on Foata normal form. 0/365 useless extension candidates. Maximal degree in co-relation 271. Up to 2 conditions per place. [2022-11-02 20:11:49,234 INFO L82 GeneralOperation]: Start removeDead. Operand has 375 places, 396 transitions, 808 flow [2022-11-02 20:11:49,243 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 364 places, 385 transitions, 782 flow [2022-11-02 20:11:49,256 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:11:49,265 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;@22ee2d4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:11:49,265 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-02 20:11:49,381 INFO L130 PetriNetUnfolder]: 28/384 cut-off events. [2022-11-02 20:11:49,382 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:11:49,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:11:49,383 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] [2022-11-02 20:11:49,384 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 20:11:49,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:49,420 INFO L85 PathProgramCache]: Analyzing trace with hash -917878546, now seen corresponding path program 1 times [2022-11-02 20:11:49,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:11:49,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544254101] [2022-11-02 20:11:49,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:49,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:11:49,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:49,827 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 20:11:49,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:11:49,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544254101] [2022-11-02 20:11:49,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544254101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:49,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:49,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:11:49,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063379403] [2022-11-02 20:11:49,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:49,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:11:49,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:11:49,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:11:49,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:11:49,916 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 368 out of 396 [2022-11-02 20:11:49,926 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 385 transitions, 782 flow. Second operand has 2 states, 2 states have (on average 371.0) internal successors, (742), 2 states have internal predecessors, (742), 0 states have call successors, (0), 0 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 20:11:49,926 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:11:49,926 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 368 of 396 [2022-11-02 20:11:49,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:11:50,147 INFO L130 PetriNetUnfolder]: 5/362 cut-off events. [2022-11-02 20:11:50,149 INFO L131 PetriNetUnfolder]: For 8/9 co-relation queries the response was YES. [2022-11-02 20:11:50,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 362 events. 5/362 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 907 event pairs, 0 based on Foata normal form. 29/366 useless extension candidates. Maximal degree in co-relation 254. Up to 5 conditions per place. [2022-11-02 20:11:50,161 INFO L137 encePairwiseOnDemand]: 373/396 looper letters, 4 selfloop transitions, 0 changer transitions 4/362 dead transitions. [2022-11-02 20:11:50,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 362 transitions, 744 flow [2022-11-02 20:11:50,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:11:50,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:11:50,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 763 transitions. [2022-11-02 20:11:50,190 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9633838383838383 [2022-11-02 20:11:50,191 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 763 transitions. [2022-11-02 20:11:50,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 763 transitions. [2022-11-02 20:11:50,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:11:50,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 763 transitions. [2022-11-02 20:11:50,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 381.5) internal successors, (763), 2 states have internal predecessors, (763), 0 states have call successors, (0), 0 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 20:11:50,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 396.0) internal successors, (1188), 3 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:50,227 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 396.0) internal successors, (1188), 3 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:50,230 INFO L175 Difference]: Start difference. First operand has 364 places, 385 transitions, 782 flow. Second operand 2 states and 763 transitions. [2022-11-02 20:11:50,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 362 transitions, 744 flow [2022-11-02 20:11:50,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 362 transitions, 736 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:11:50,251 INFO L231 Difference]: Finished difference. Result has 361 places, 358 transitions, 720 flow [2022-11-02 20:11:50,254 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=720, PETRI_PLACES=361, PETRI_TRANSITIONS=358} [2022-11-02 20:11:50,261 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, -3 predicate places. [2022-11-02 20:11:50,261 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 358 transitions, 720 flow [2022-11-02 20:11:50,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 371.0) internal successors, (742), 2 states have internal predecessors, (742), 0 states have call successors, (0), 0 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 20:11:50,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:11:50,263 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] [2022-11-02 20:11:50,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:11:50,264 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 20:11:50,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:50,266 INFO L85 PathProgramCache]: Analyzing trace with hash -441871954, now seen corresponding path program 1 times [2022-11-02 20:11:50,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:11:50,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317388004] [2022-11-02 20:11:50,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:50,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:11:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:52,341 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 20:11:52,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:11:52,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317388004] [2022-11-02 20:11:52,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317388004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:52,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:52,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 20:11:52,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834046736] [2022-11-02 20:11:52,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:52,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:11:52,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:11:52,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:11:52,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:11:52,361 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-11-02 20:11:52,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 358 transitions, 720 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 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 20:11:52,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:11:52,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-11-02 20:11:52,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:11:58,703 INFO L130 PetriNetUnfolder]: 4047/15008 cut-off events. [2022-11-02 20:11:58,704 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-11-02 20:11:58,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22854 conditions, 15008 events. 4047/15008 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 151325 event pairs, 841 based on Foata normal form. 1/14058 useless extension candidates. Maximal degree in co-relation 22851. Up to 4039 conditions per place. [2022-11-02 20:11:58,823 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 574 selfloop transitions, 75 changer transitions 33/928 dead transitions. [2022-11-02 20:11:58,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 928 transitions, 3247 flow [2022-11-02 20:11:58,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 20:11:58,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-02 20:11:58,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 8875 transitions. [2022-11-02 20:11:58,844 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7003630050505051 [2022-11-02 20:11:58,845 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 8875 transitions. [2022-11-02 20:11:58,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 8875 transitions. [2022-11-02 20:11:58,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:11:58,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 8875 transitions. [2022-11-02 20:11:58,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 277.34375) internal successors, (8875), 32 states have internal predecessors, (8875), 0 states have call successors, (0), 0 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 20:11:58,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 396.0) internal successors, (13068), 33 states have internal predecessors, (13068), 0 states have call successors, (0), 0 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 20:11:58,919 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 396.0) internal successors, (13068), 33 states have internal predecessors, (13068), 0 states have call successors, (0), 0 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 20:11:58,919 INFO L175 Difference]: Start difference. First operand has 361 places, 358 transitions, 720 flow. Second operand 32 states and 8875 transitions. [2022-11-02 20:11:58,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 928 transitions, 3247 flow [2022-11-02 20:11:58,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 928 transitions, 3247 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:11:58,943 INFO L231 Difference]: Finished difference. Result has 414 places, 433 transitions, 1231 flow [2022-11-02 20:11:58,944 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1231, PETRI_PLACES=414, PETRI_TRANSITIONS=433} [2022-11-02 20:11:58,945 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 50 predicate places. [2022-11-02 20:11:58,945 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 433 transitions, 1231 flow [2022-11-02 20:11:58,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 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 20:11:58,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:11:58,948 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] [2022-11-02 20:11:58,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:11:58,950 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 20:11:58,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:58,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1778856486, now seen corresponding path program 2 times [2022-11-02 20:11:58,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:11:58,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604800517] [2022-11-02 20:11:58,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:58,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:11:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:00,267 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 20:12:00,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:12:00,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604800517] [2022-11-02 20:12:00,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604800517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:12:00,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:12:00,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 20:12:00,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589831899] [2022-11-02 20:12:00,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:12:00,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:12:00,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:12:00,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:12:00,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:12:00,280 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-11-02 20:12:00,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 433 transitions, 1231 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 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 20:12:00,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:12:00,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-11-02 20:12:00,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:12:07,753 INFO L130 PetriNetUnfolder]: 4738/17502 cut-off events. [2022-11-02 20:12:07,753 INFO L131 PetriNetUnfolder]: For 6448/6500 co-relation queries the response was YES. [2022-11-02 20:12:07,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33380 conditions, 17502 events. 4738/17502 cut-off events. For 6448/6500 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 182049 event pairs, 1131 based on Foata normal form. 30/16430 useless extension candidates. Maximal degree in co-relation 33350. Up to 4459 conditions per place. [2022-11-02 20:12:07,965 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 509 selfloop transitions, 164 changer transitions 17/936 dead transitions. [2022-11-02 20:12:07,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 936 transitions, 4435 flow [2022-11-02 20:12:07,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-02 20:12:07,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-02 20:12:07,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 11120 transitions. [2022-11-02 20:12:08,005 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6848977580684897 [2022-11-02 20:12:08,005 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 11120 transitions. [2022-11-02 20:12:08,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 11120 transitions. [2022-11-02 20:12:08,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:12:08,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 11120 transitions. [2022-11-02 20:12:08,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 271.219512195122) internal successors, (11120), 41 states have internal predecessors, (11120), 0 states have call successors, (0), 0 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 20:12:08,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 396.0) internal successors, (16632), 42 states have internal predecessors, (16632), 0 states have call successors, (0), 0 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 20:12:08,117 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 396.0) internal successors, (16632), 42 states have internal predecessors, (16632), 0 states have call successors, (0), 0 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 20:12:08,119 INFO L175 Difference]: Start difference. First operand has 414 places, 433 transitions, 1231 flow. Second operand 41 states and 11120 transitions. [2022-11-02 20:12:08,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 936 transitions, 4435 flow [2022-11-02 20:12:08,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 936 transitions, 4289 flow, removed 68 selfloop flow, removed 8 redundant places. [2022-11-02 20:12:08,272 INFO L231 Difference]: Finished difference. Result has 470 places, 546 transitions, 2416 flow [2022-11-02 20:12:08,273 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=1197, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=2416, PETRI_PLACES=470, PETRI_TRANSITIONS=546} [2022-11-02 20:12:08,276 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 106 predicate places. [2022-11-02 20:12:08,276 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 546 transitions, 2416 flow [2022-11-02 20:12:08,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 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 20:12:08,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:12:08,280 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] [2022-11-02 20:12:08,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:12:08,280 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 20:12:08,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:08,282 INFO L85 PathProgramCache]: Analyzing trace with hash -525432176, now seen corresponding path program 3 times [2022-11-02 20:12:08,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:12:08,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643746442] [2022-11-02 20:12:08,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:08,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:12:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:09,449 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 20:12:09,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:12:09,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643746442] [2022-11-02 20:12:09,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643746442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:12:09,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:12:09,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 20:12:09,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122511600] [2022-11-02 20:12:09,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:12:09,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:12:09,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:12:09,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:12:09,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:12:09,457 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-11-02 20:12:09,462 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 546 transitions, 2416 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 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 20:12:09,462 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:12:09,462 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-11-02 20:12:09,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:12:16,995 INFO L130 PetriNetUnfolder]: 4819/17595 cut-off events. [2022-11-02 20:12:16,995 INFO L131 PetriNetUnfolder]: For 16137/16192 co-relation queries the response was YES. [2022-11-02 20:12:17,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38540 conditions, 17595 events. 4819/17595 cut-off events. For 16137/16192 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 182671 event pairs, 823 based on Foata normal form. 40/16578 useless extension candidates. Maximal degree in co-relation 38485. Up to 4583 conditions per place. [2022-11-02 20:12:17,234 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 646 selfloop transitions, 173 changer transitions 17/1082 dead transitions. [2022-11-02 20:12:17,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 1082 transitions, 6476 flow [2022-11-02 20:12:17,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-02 20:12:17,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-02 20:12:17,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 10392 transitions. [2022-11-02 20:12:17,257 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6905901116427432 [2022-11-02 20:12:17,258 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 10392 transitions. [2022-11-02 20:12:17,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 10392 transitions. [2022-11-02 20:12:17,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:12:17,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 10392 transitions. [2022-11-02 20:12:17,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 273.4736842105263) internal successors, (10392), 38 states have internal predecessors, (10392), 0 states have call successors, (0), 0 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 20:12:17,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 396.0) internal successors, (15444), 39 states have internal predecessors, (15444), 0 states have call successors, (0), 0 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 20:12:17,324 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 396.0) internal successors, (15444), 39 states have internal predecessors, (15444), 0 states have call successors, (0), 0 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 20:12:17,324 INFO L175 Difference]: Start difference. First operand has 470 places, 546 transitions, 2416 flow. Second operand 38 states and 10392 transitions. [2022-11-02 20:12:17,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 1082 transitions, 6476 flow [2022-11-02 20:12:17,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 1082 transitions, 6150 flow, removed 144 selfloop flow, removed 9 redundant places. [2022-11-02 20:12:17,533 INFO L231 Difference]: Finished difference. Result has 507 places, 596 transitions, 3194 flow [2022-11-02 20:12:17,535 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=2304, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3194, PETRI_PLACES=507, PETRI_TRANSITIONS=596} [2022-11-02 20:12:17,536 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 143 predicate places. [2022-11-02 20:12:17,537 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 596 transitions, 3194 flow [2022-11-02 20:12:17,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 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 20:12:17,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:12:17,541 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] [2022-11-02 20:12:17,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:12:17,542 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 20:12:17,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:17,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1779878828, now seen corresponding path program 4 times [2022-11-02 20:12:17,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:12:17,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614154169] [2022-11-02 20:12:17,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:17,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:12:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:18,534 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 20:12:18,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:12:18,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614154169] [2022-11-02 20:12:18,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614154169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:12:18,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:12:18,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 20:12:18,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649248876] [2022-11-02 20:12:18,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:12:18,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:12:18,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:12:18,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:12:18,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:12:18,544 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-11-02 20:12:18,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 596 transitions, 3194 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 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 20:12:18,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:12:18,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-11-02 20:12:18,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:12:26,664 INFO L130 PetriNetUnfolder]: 5252/19341 cut-off events. [2022-11-02 20:12:26,664 INFO L131 PetriNetUnfolder]: For 20560/20632 co-relation queries the response was YES. [2022-11-02 20:12:27,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43318 conditions, 19341 events. 5252/19341 cut-off events. For 20560/20632 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 203946 event pairs, 849 based on Foata normal form. 39/18199 useless extension candidates. Maximal degree in co-relation 43252. Up to 5413 conditions per place. [2022-11-02 20:12:27,158 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 690 selfloop transitions, 185 changer transitions 16/1137 dead transitions. [2022-11-02 20:12:27,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 1137 transitions, 7437 flow [2022-11-02 20:12:27,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 20:12:27,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-02 20:12:27,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 9353 transitions. [2022-11-02 20:12:27,175 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6946672608437314 [2022-11-02 20:12:27,175 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 9353 transitions. [2022-11-02 20:12:27,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 9353 transitions. [2022-11-02 20:12:27,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:12:27,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 9353 transitions. [2022-11-02 20:12:27,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 275.0882352941176) internal successors, (9353), 34 states have internal predecessors, (9353), 0 states have call successors, (0), 0 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 20:12:27,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 396.0) internal successors, (13860), 35 states have internal predecessors, (13860), 0 states have call successors, (0), 0 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 20:12:27,220 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 396.0) internal successors, (13860), 35 states have internal predecessors, (13860), 0 states have call successors, (0), 0 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 20:12:27,220 INFO L175 Difference]: Start difference. First operand has 507 places, 596 transitions, 3194 flow. Second operand 34 states and 9353 transitions. [2022-11-02 20:12:27,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 1137 transitions, 7437 flow [2022-11-02 20:12:27,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 1137 transitions, 7068 flow, removed 29 selfloop flow, removed 14 redundant places. [2022-11-02 20:12:27,527 INFO L231 Difference]: Finished difference. Result has 545 places, 702 transitions, 4555 flow [2022-11-02 20:12:27,529 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=2988, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=4555, PETRI_PLACES=545, PETRI_TRANSITIONS=702} [2022-11-02 20:12:27,532 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 181 predicate places. [2022-11-02 20:12:27,532 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 702 transitions, 4555 flow [2022-11-02 20:12:27,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 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 20:12:27,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:12:27,534 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] [2022-11-02 20:12:27,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:12:27,535 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 20:12:27,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:27,537 INFO L85 PathProgramCache]: Analyzing trace with hash 5554452, now seen corresponding path program 5 times [2022-11-02 20:12:27,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:12:27,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040029004] [2022-11-02 20:12:27,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:27,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:12:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:28,524 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 20:12:28,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:12:28,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040029004] [2022-11-02 20:12:28,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040029004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:12:28,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:12:28,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 20:12:28,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206079539] [2022-11-02 20:12:28,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:12:28,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:12:28,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:12:28,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:12:28,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:12:28,535 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-11-02 20:12:28,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 702 transitions, 4555 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 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 20:12:28,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:12:28,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-11-02 20:12:28,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:12:38,461 INFO L130 PetriNetUnfolder]: 5591/20970 cut-off events. [2022-11-02 20:12:38,462 INFO L131 PetriNetUnfolder]: For 34081/34214 co-relation queries the response was YES. [2022-11-02 20:12:38,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52169 conditions, 20970 events. 5591/20970 cut-off events. For 34081/34214 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 225265 event pairs, 949 based on Foata normal form. 74/19738 useless extension candidates. Maximal degree in co-relation 52078. Up to 5416 conditions per place. [2022-11-02 20:12:38,904 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 764 selfloop transitions, 267 changer transitions 17/1294 dead transitions. [2022-11-02 20:12:38,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 1294 transitions, 10100 flow [2022-11-02 20:12:38,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-02 20:12:38,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-02 20:12:38,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 11202 transitions. [2022-11-02 20:12:38,932 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6899482631189948 [2022-11-02 20:12:38,932 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 11202 transitions. [2022-11-02 20:12:38,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 11202 transitions. [2022-11-02 20:12:38,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:12:38,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 11202 transitions. [2022-11-02 20:12:38,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 273.219512195122) internal successors, (11202), 41 states have internal predecessors, (11202), 0 states have call successors, (0), 0 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 20:12:38,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 396.0) internal successors, (16632), 42 states have internal predecessors, (16632), 0 states have call successors, (0), 0 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 20:12:38,984 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 396.0) internal successors, (16632), 42 states have internal predecessors, (16632), 0 states have call successors, (0), 0 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 20:12:38,984 INFO L175 Difference]: Start difference. First operand has 545 places, 702 transitions, 4555 flow. Second operand 41 states and 11202 transitions. [2022-11-02 20:12:38,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 1294 transitions, 10100 flow [2022-11-02 20:12:39,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 1294 transitions, 9623 flow, removed 215 selfloop flow, removed 8 redundant places. [2022-11-02 20:12:39,906 INFO L231 Difference]: Finished difference. Result has 594 places, 803 transitions, 6223 flow [2022-11-02 20:12:39,907 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=4312, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=6223, PETRI_PLACES=594, PETRI_TRANSITIONS=803} [2022-11-02 20:12:39,911 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 230 predicate places. [2022-11-02 20:12:39,912 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 803 transitions, 6223 flow [2022-11-02 20:12:39,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 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 20:12:39,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:12:39,914 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] [2022-11-02 20:12:39,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:12:39,915 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 20:12:39,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:39,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1373590978, now seen corresponding path program 6 times [2022-11-02 20:12:39,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:12:39,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371713736] [2022-11-02 20:12:39,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:39,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:12:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:40,893 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 20:12:40,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:12:40,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371713736] [2022-11-02 20:12:40,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371713736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:12:40,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:12:40,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 20:12:40,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078681027] [2022-11-02 20:12:40,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:12:40,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:12:40,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:12:40,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:12:40,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:12:40,901 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-11-02 20:12:40,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 803 transitions, 6223 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 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 20:12:40,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:12:40,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-11-02 20:12:40,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:12:52,236 INFO L130 PetriNetUnfolder]: 5843/21622 cut-off events. [2022-11-02 20:12:52,237 INFO L131 PetriNetUnfolder]: For 44179/44380 co-relation queries the response was YES. [2022-11-02 20:12:52,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56750 conditions, 21622 events. 5843/21622 cut-off events. For 44179/44380 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 235089 event pairs, 803 based on Foata normal form. 133/20481 useless extension candidates. Maximal degree in co-relation 56642. Up to 5454 conditions per place. [2022-11-02 20:12:52,739 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 695 selfloop transitions, 358 changer transitions 17/1316 dead transitions. [2022-11-02 20:12:52,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 1316 transitions, 11438 flow [2022-11-02 20:12:52,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-02 20:12:52,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-11-02 20:12:52,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 11693 transitions. [2022-11-02 20:12:52,760 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6866925064599483 [2022-11-02 20:12:52,761 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 11693 transitions. [2022-11-02 20:12:52,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 11693 transitions. [2022-11-02 20:12:52,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:12:52,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 11693 transitions. [2022-11-02 20:12:52,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 271.93023255813955) internal successors, (11693), 43 states have internal predecessors, (11693), 0 states have call successors, (0), 0 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 20:12:52,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 396.0) internal successors, (17424), 44 states have internal predecessors, (17424), 0 states have call successors, (0), 0 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 20:12:52,828 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 396.0) internal successors, (17424), 44 states have internal predecessors, (17424), 0 states have call successors, (0), 0 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 20:12:52,829 INFO L175 Difference]: Start difference. First operand has 594 places, 803 transitions, 6223 flow. Second operand 43 states and 11693 transitions. [2022-11-02 20:12:52,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 628 places, 1316 transitions, 11438 flow [2022-11-02 20:12:53,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 1316 transitions, 10969 flow, removed 134 selfloop flow, removed 13 redundant places. [2022-11-02 20:12:53,654 INFO L231 Difference]: Finished difference. Result has 635 places, 886 transitions, 7873 flow [2022-11-02 20:12:53,655 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=5887, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=803, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=278, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=7873, PETRI_PLACES=635, PETRI_TRANSITIONS=886} [2022-11-02 20:12:53,656 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 271 predicate places. [2022-11-02 20:12:53,656 INFO L495 AbstractCegarLoop]: Abstraction has has 635 places, 886 transitions, 7873 flow [2022-11-02 20:12:53,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 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 20:12:53,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:12:53,657 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] [2022-11-02 20:12:53,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:12:53,658 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 20:12:53,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:53,658 INFO L85 PathProgramCache]: Analyzing trace with hash -684355140, now seen corresponding path program 7 times [2022-11-02 20:12:53,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:12:53,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302615287] [2022-11-02 20:12:53,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:53,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:12:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:54,633 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 20:12:54,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:12:54,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302615287] [2022-11-02 20:12:54,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302615287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:12:54,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:12:54,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 20:12:54,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669850970] [2022-11-02 20:12:54,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:12:54,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:12:54,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:12:54,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:12:54,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:12:54,642 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-11-02 20:12:54,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 635 places, 886 transitions, 7873 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 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 20:12:54,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:12:54,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-11-02 20:12:54,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:13:06,465 INFO L130 PetriNetUnfolder]: 6160/23012 cut-off events. [2022-11-02 20:13:06,465 INFO L131 PetriNetUnfolder]: For 60499/60715 co-relation queries the response was YES. [2022-11-02 20:13:07,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63594 conditions, 23012 events. 6160/23012 cut-off events. For 60499/60715 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 253142 event pairs, 957 based on Foata normal form. 142/21771 useless extension candidates. Maximal degree in co-relation 63470. Up to 6072 conditions per place. [2022-11-02 20:13:07,166 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 833 selfloop transitions, 324 changer transitions 16/1419 dead transitions. [2022-11-02 20:13:07,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 669 places, 1419 transitions, 13518 flow [2022-11-02 20:13:07,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-02 20:13:07,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-11-02 20:13:07,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 11433 transitions. [2022-11-02 20:13:07,204 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6874098124098124 [2022-11-02 20:13:07,204 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 11433 transitions. [2022-11-02 20:13:07,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 11433 transitions. [2022-11-02 20:13:07,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:13:07,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 11433 transitions. [2022-11-02 20:13:07,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 272.2142857142857) internal successors, (11433), 42 states have internal predecessors, (11433), 0 states have call successors, (0), 0 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 20:13:07,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 396.0) internal successors, (17028), 43 states have internal predecessors, (17028), 0 states have call successors, (0), 0 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 20:13:07,291 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 396.0) internal successors, (17028), 43 states have internal predecessors, (17028), 0 states have call successors, (0), 0 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 20:13:07,291 INFO L175 Difference]: Start difference. First operand has 635 places, 886 transitions, 7873 flow. Second operand 42 states and 11433 transitions. [2022-11-02 20:13:07,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 669 places, 1419 transitions, 13518 flow [2022-11-02 20:13:08,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 651 places, 1419 transitions, 12913 flow, removed 125 selfloop flow, removed 18 redundant places. [2022-11-02 20:13:08,345 INFO L231 Difference]: Finished difference. Result has 680 places, 989 transitions, 9572 flow [2022-11-02 20:13:08,346 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=7342, PETRI_DIFFERENCE_MINUEND_PLACES=610, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=886, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=9572, PETRI_PLACES=680, PETRI_TRANSITIONS=989} [2022-11-02 20:13:08,347 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 316 predicate places. [2022-11-02 20:13:08,347 INFO L495 AbstractCegarLoop]: Abstraction has has 680 places, 989 transitions, 9572 flow [2022-11-02 20:13:08,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 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 20:13:08,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:13:08,349 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] [2022-11-02 20:13:08,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:13:08,349 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 20:13:08,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:08,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1739470564, now seen corresponding path program 8 times [2022-11-02 20:13:08,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:13:08,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533609733] [2022-11-02 20:13:08,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:08,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:13:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:09,469 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 20:13:09,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:13:09,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533609733] [2022-11-02 20:13:09,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533609733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:09,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:09,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 20:13:09,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796300591] [2022-11-02 20:13:09,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:09,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:13:09,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:13:09,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:13:09,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:13:09,476 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-11-02 20:13:09,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 680 places, 989 transitions, 9572 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 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 20:13:09,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:13:09,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-11-02 20:13:09,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand