./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 6b4ec56b 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_1b24e7ee-6d66-4acf-94fd-6cd52278a932/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b24e7ee-6d66-4acf-94fd-6cd52278a932/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b24e7ee-6d66-4acf-94fd-6cd52278a932/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b24e7ee-6d66-4acf-94fd-6cd52278a932/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b24e7ee-6d66-4acf-94fd-6cd52278a932/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b24e7ee-6d66-4acf-94fd-6cd52278a932/bin/uautomizer-ug76WZFUDN --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-6b4ec56 [2022-11-20 11:42:11,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:42:11,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:42:11,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:42:11,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:42:11,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:42:11,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:42:11,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:42:11,743 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:42:11,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:42:11,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:42:11,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:42:11,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:42:11,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:42:11,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:42:11,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:42:11,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:42:11,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:42:11,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:42:11,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:42:11,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:42:11,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:42:11,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:42:11,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:42:11,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:42:11,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:42:11,765 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:42:11,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:42:11,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:42:11,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:42:11,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:42:11,768 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:42:11,769 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:42:11,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:42:11,771 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:42:11,771 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:42:11,772 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:42:11,772 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:42:11,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:42:11,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:42:11,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:42:11,787 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b24e7ee-6d66-4acf-94fd-6cd52278a932/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:42:11,841 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:42:11,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:42:11,841 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:42:11,841 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:42:11,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:42:11,842 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:42:11,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:42:11,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:42:11,843 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:42:11,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:42:11,844 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:42:11,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:42:11,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:42:11,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:42:11,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:42:11,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:42:11,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:42:11,845 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:42:11,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:42:11,845 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:42:11,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:42:11,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:42:11,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:42:11,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:42:11,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:42:11,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:42:11,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:42:11,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:42:11,847 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:42:11,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:42:11,847 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:42:11,848 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:42:11,848 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:42:11,848 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_1b24e7ee-6d66-4acf-94fd-6cd52278a932/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b24e7ee-6d66-4acf-94fd-6cd52278a932/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c870162e8691a06e8bb6a8083be9eaf3f7ddc94357fb302a6e1fdd1b7aa873f8 [2022-11-20 11:42:12,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:42:12,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:42:12,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:42:12,190 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:42:12,191 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:42:12,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b24e7ee-6d66-4acf-94fd-6cd52278a932/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2022-11-20 11:42:15,352 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:42:15,575 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:42:15,576 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b24e7ee-6d66-4acf-94fd-6cd52278a932/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2022-11-20 11:42:15,587 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b24e7ee-6d66-4acf-94fd-6cd52278a932/bin/uautomizer-ug76WZFUDN/data/f8b518b6b/3a06f16c6dc24466bed041007e9009f6/FLAGc94f64bf5 [2022-11-20 11:42:15,610 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b24e7ee-6d66-4acf-94fd-6cd52278a932/bin/uautomizer-ug76WZFUDN/data/f8b518b6b/3a06f16c6dc24466bed041007e9009f6 [2022-11-20 11:42:15,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:42:15,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:42:15,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:42:15,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:42:15,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:42:15,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:42:15" (1/1) ... [2022-11-20 11:42:15,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8cb8e38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:15, skipping insertion in model container [2022-11-20 11:42:15,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:42:15" (1/1) ... [2022-11-20 11:42:15,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:42:15,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:42:15,868 WARN L237 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_1b24e7ee-6d66-4acf-94fd-6cd52278a932/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c[2755,2768] [2022-11-20 11:42:15,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:42:15,890 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:42:15,916 WARN L237 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_1b24e7ee-6d66-4acf-94fd-6cd52278a932/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c[2755,2768] [2022-11-20 11:42:15,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:42:15,936 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:42:15,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:15 WrapperNode [2022-11-20 11:42:15,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:42:15,938 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:42:15,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:42:15,939 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:42:15,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:15" (1/1) ... [2022-11-20 11:42:15,956 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:15" (1/1) ... [2022-11-20 11:42:16,008 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 17, calls inlined = 31, statements flattened = 277 [2022-11-20 11:42:16,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:42:16,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:42:16,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:42:16,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:42:16,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:15" (1/1) ... [2022-11-20 11:42:16,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:15" (1/1) ... [2022-11-20 11:42:16,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:15" (1/1) ... [2022-11-20 11:42:16,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:15" (1/1) ... [2022-11-20 11:42:16,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:15" (1/1) ... [2022-11-20 11:42:16,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:15" (1/1) ... [2022-11-20 11:42:16,071 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:15" (1/1) ... [2022-11-20 11:42:16,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:15" (1/1) ... [2022-11-20 11:42:16,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:42:16,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:42:16,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:42:16,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:42:16,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:15" (1/1) ... [2022-11-20 11:42:16,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:42:16,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b24e7ee-6d66-4acf-94fd-6cd52278a932/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:42:16,133 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b24e7ee-6d66-4acf-94fd-6cd52278a932/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:42:16,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b24e7ee-6d66-4acf-94fd-6cd52278a932/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:42:16,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:42:16,180 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:42:16,180 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:42:16,181 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:42:16,181 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:42:16,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:42:16,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:42:16,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:42:16,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:42:16,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:42:16,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:42:16,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:42:16,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:42:16,184 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:42:16,372 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:42:16,378 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:42:16,929 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:42:16,942 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:42:16,955 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 11:42:16,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:42:16 BoogieIcfgContainer [2022-11-20 11:42:16,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:42:16,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:42:16,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:42:16,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:42:16,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:42:15" (1/3) ... [2022-11-20 11:42:16,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6c6ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:42:16, skipping insertion in model container [2022-11-20 11:42:16,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:15" (2/3) ... [2022-11-20 11:42:16,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6c6ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:42:16, skipping insertion in model container [2022-11-20 11:42:16,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:42:16" (3/3) ... [2022-11-20 11:42:16,975 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2022-11-20 11:42:16,983 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:42:17,004 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:42:17,004 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:42:17,005 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:42:17,174 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 11:42:17,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 375 places, 396 transitions, 808 flow [2022-11-20 11:42:17,506 INFO L130 PetriNetUnfolder]: 28/394 cut-off events. [2022-11-20 11:42:17,506 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:42:17,527 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 923 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. [2022-11-20 11:42:17,527 INFO L82 GeneralOperation]: Start removeDead. Operand has 375 places, 396 transitions, 808 flow [2022-11-20 11:42:17,535 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 364 places, 385 transitions, 782 flow [2022-11-20 11:42:17,544 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:42:17,553 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;@3dad4fdf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:42:17,553 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-20 11:42:17,673 INFO L130 PetriNetUnfolder]: 28/384 cut-off events. [2022-11-20 11:42:17,673 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:42:17,673 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:42:17,675 INFO L209 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] [2022-11-20 11:42:17,675 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:42:17,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:42:17,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1784930771, now seen corresponding path program 1 times [2022-11-20 11:42:17,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:42:17,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5641893] [2022-11-20 11:42:17,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:42:17,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:42:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:18,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:42:18,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:42:18,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5641893] [2022-11-20 11:42:18,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5641893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:42:18,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:42:18,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:42:18,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64741683] [2022-11-20 11:42:18,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:42:18,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:42:18,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:42:18,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:42:18,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:42:18,130 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 368 out of 396 [2022-11-20 11:42:18,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 385 transitions, 782 flow. Second operand has 2 states, 2 states have (on average 371.5) internal successors, (743), 2 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:18,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:42:18,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 368 of 396 [2022-11-20 11:42:18,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:42:18,289 INFO L130 PetriNetUnfolder]: 5/362 cut-off events. [2022-11-20 11:42:18,290 INFO L131 PetriNetUnfolder]: For 8/9 co-relation queries the response was YES. [2022-11-20 11:42:18,299 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 887 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. [2022-11-20 11:42:18,301 INFO L137 encePairwiseOnDemand]: 373/396 looper letters, 4 selfloop transitions, 0 changer transitions 4/362 dead transitions. [2022-11-20 11:42:18,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 362 transitions, 744 flow [2022-11-20 11:42:18,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:42:18,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 11:42:18,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 763 transitions. [2022-11-20 11:42:18,323 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9633838383838383 [2022-11-20 11:42:18,324 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 763 transitions. [2022-11-20 11:42:18,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 763 transitions. [2022-11-20 11:42:18,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:42:18,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 763 transitions. [2022-11-20 11:42:18,338 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) [2022-11-20 11:42:18,347 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) [2022-11-20 11:42:18,348 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) [2022-11-20 11:42:18,350 INFO L175 Difference]: Start difference. First operand has 364 places, 385 transitions, 782 flow. Second operand 2 states and 763 transitions. [2022-11-20 11:42:18,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 362 transitions, 744 flow [2022-11-20 11:42:18,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 362 transitions, 736 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:42:18,365 INFO L231 Difference]: Finished difference. Result has 361 places, 358 transitions, 720 flow [2022-11-20 11:42:18,368 INFO L271 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} [2022-11-20 11:42:18,374 INFO L288 CegarLoopForPetriNet]: 364 programPoint places, -3 predicate places. [2022-11-20 11:42:18,374 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 358 transitions, 720 flow [2022-11-20 11:42:18,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 371.5) internal successors, (743), 2 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:18,375 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:42:18,376 INFO L209 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] [2022-11-20 11:42:18,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:42:18,377 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:42:18,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:42:18,378 INFO L85 PathProgramCache]: Analyzing trace with hash 62130702, now seen corresponding path program 1 times [2022-11-20 11:42:18,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:42:18,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274279664] [2022-11-20 11:42:18,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:42:18,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:42:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:20,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:42:20,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:42:20,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274279664] [2022-11-20 11:42:20,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274279664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:42:20,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:42:20,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:42:20,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759076575] [2022-11-20 11:42:20,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:42:20,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:42:20,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:42:20,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:42:20,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:42:20,235 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-11-20 11:42:20,241 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) [2022-11-20 11:42:20,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:42:20,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-11-20 11:42:20,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:42:25,932 INFO L130 PetriNetUnfolder]: 4047/14894 cut-off events. [2022-11-20 11:42:25,932 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-11-20 11:42:25,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22740 conditions, 14894 events. 4047/14894 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 149403 event pairs, 929 based on Foata normal form. 1/13986 useless extension candidates. Maximal degree in co-relation 22737. Up to 4039 conditions per place. [2022-11-20 11:42:26,075 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 574 selfloop transitions, 75 changer transitions 33/928 dead transitions. [2022-11-20 11:42:26,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 928 transitions, 3247 flow [2022-11-20 11:42:26,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:42:26,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-20 11:42:26,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 8875 transitions. [2022-11-20 11:42:26,093 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7003630050505051 [2022-11-20 11:42:26,093 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 8875 transitions. [2022-11-20 11:42:26,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 8875 transitions. [2022-11-20 11:42:26,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:42:26,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 8875 transitions. [2022-11-20 11:42:26,118 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) [2022-11-20 11:42:26,142 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) [2022-11-20 11:42:26,149 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) [2022-11-20 11:42:26,150 INFO L175 Difference]: Start difference. First operand has 361 places, 358 transitions, 720 flow. Second operand 32 states and 8875 transitions. [2022-11-20 11:42:26,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 928 transitions, 3247 flow [2022-11-20 11:42:26,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 928 transitions, 3247 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:42:26,169 INFO L231 Difference]: Finished difference. Result has 414 places, 433 transitions, 1231 flow [2022-11-20 11:42:26,170 INFO L271 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} [2022-11-20 11:42:26,171 INFO L288 CegarLoopForPetriNet]: 364 programPoint places, 50 predicate places. [2022-11-20 11:42:26,171 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 433 transitions, 1231 flow [2022-11-20 11:42:26,175 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) [2022-11-20 11:42:26,175 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:42:26,175 INFO L209 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] [2022-11-20 11:42:26,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:42:26,176 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:42:26,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:42:26,177 INFO L85 PathProgramCache]: Analyzing trace with hash 600824224, now seen corresponding path program 2 times [2022-11-20 11:42:26,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:42:26,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735404907] [2022-11-20 11:42:26,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:42:26,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:42:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:27,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:42:27,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:42:27,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735404907] [2022-11-20 11:42:27,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735404907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:42:27,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:42:27,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:42:27,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350200117] [2022-11-20 11:42:27,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:42:27,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:42:27,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:42:27,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:42:27,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:42:27,411 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-11-20 11:42:27,416 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) [2022-11-20 11:42:27,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:42:27,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-11-20 11:42:27,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:42:34,009 INFO L130 PetriNetUnfolder]: 4738/17490 cut-off events. [2022-11-20 11:42:34,009 INFO L131 PetriNetUnfolder]: For 6445/6497 co-relation queries the response was YES. [2022-11-20 11:42:34,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33368 conditions, 17490 events. 4738/17490 cut-off events. For 6445/6497 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 181890 event pairs, 1131 based on Foata normal form. 30/16417 useless extension candidates. Maximal degree in co-relation 33338. Up to 4459 conditions per place. [2022-11-20 11:42:34,217 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 509 selfloop transitions, 164 changer transitions 17/936 dead transitions. [2022-11-20 11:42:34,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 936 transitions, 4435 flow [2022-11-20 11:42:34,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-20 11:42:34,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-20 11:42:34,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 11120 transitions. [2022-11-20 11:42:34,244 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6848977580684897 [2022-11-20 11:42:34,245 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 11120 transitions. [2022-11-20 11:42:34,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 11120 transitions. [2022-11-20 11:42:34,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:42:34,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 11120 transitions. [2022-11-20 11:42:34,280 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) [2022-11-20 11:42:34,311 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) [2022-11-20 11:42:34,319 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) [2022-11-20 11:42:34,319 INFO L175 Difference]: Start difference. First operand has 414 places, 433 transitions, 1231 flow. Second operand 41 states and 11120 transitions. [2022-11-20 11:42:34,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 936 transitions, 4435 flow [2022-11-20 11:42:34,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 936 transitions, 4289 flow, removed 68 selfloop flow, removed 8 redundant places. [2022-11-20 11:42:34,435 INFO L231 Difference]: Finished difference. Result has 470 places, 546 transitions, 2416 flow [2022-11-20 11:42:34,436 INFO L271 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} [2022-11-20 11:42:34,438 INFO L288 CegarLoopForPetriNet]: 364 programPoint places, 106 predicate places. [2022-11-20 11:42:34,439 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 546 transitions, 2416 flow [2022-11-20 11:42:34,441 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) [2022-11-20 11:42:34,441 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:42:34,441 INFO L209 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] [2022-11-20 11:42:34,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:42:34,442 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:42:34,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:42:34,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1866303382, now seen corresponding path program 3 times [2022-11-20 11:42:34,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:42:34,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529728327] [2022-11-20 11:42:34,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:42:34,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:42:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:35,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:42:35,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:42:35,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529728327] [2022-11-20 11:42:35,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529728327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:42:35,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:42:35,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:42:35,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061744542] [2022-11-20 11:42:35,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:42:35,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:42:35,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:42:35,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:42:35,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:42:35,559 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-11-20 11:42:35,563 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) [2022-11-20 11:42:35,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:42:35,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-11-20 11:42:35,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:42:42,264 INFO L130 PetriNetUnfolder]: 4819/17596 cut-off events. [2022-11-20 11:42:42,265 INFO L131 PetriNetUnfolder]: For 16110/16165 co-relation queries the response was YES. [2022-11-20 11:42:42,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38541 conditions, 17596 events. 4819/17596 cut-off events. For 16110/16165 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 183203 event pairs, 823 based on Foata normal form. 40/16579 useless extension candidates. Maximal degree in co-relation 38486. Up to 4583 conditions per place. [2022-11-20 11:42:42,493 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 646 selfloop transitions, 173 changer transitions 17/1082 dead transitions. [2022-11-20 11:42:42,493 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 1082 transitions, 6476 flow [2022-11-20 11:42:42,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 11:42:42,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-20 11:42:42,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 10392 transitions. [2022-11-20 11:42:42,516 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6905901116427432 [2022-11-20 11:42:42,516 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 10392 transitions. [2022-11-20 11:42:42,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 10392 transitions. [2022-11-20 11:42:42,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:42:42,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 10392 transitions. [2022-11-20 11:42:42,543 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) [2022-11-20 11:42:42,569 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) [2022-11-20 11:42:42,578 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) [2022-11-20 11:42:42,579 INFO L175 Difference]: Start difference. First operand has 470 places, 546 transitions, 2416 flow. Second operand 38 states and 10392 transitions. [2022-11-20 11:42:42,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 1082 transitions, 6476 flow [2022-11-20 11:42:42,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 1082 transitions, 6150 flow, removed 144 selfloop flow, removed 9 redundant places. [2022-11-20 11:42:42,758 INFO L231 Difference]: Finished difference. Result has 507 places, 596 transitions, 3194 flow [2022-11-20 11:42:42,759 INFO L271 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} [2022-11-20 11:42:42,761 INFO L288 CegarLoopForPetriNet]: 364 programPoint places, 143 predicate places. [2022-11-20 11:42:42,761 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 596 transitions, 3194 flow [2022-11-20 11:42:42,763 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) [2022-11-20 11:42:42,768 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:42:42,768 INFO L209 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] [2022-11-20 11:42:42,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:42:42,769 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:42:42,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:42:42,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1956751312, now seen corresponding path program 4 times [2022-11-20 11:42:42,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:42:42,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140417417] [2022-11-20 11:42:42,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:42:42,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:42:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:43,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:42:43,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:42:43,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140417417] [2022-11-20 11:42:43,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140417417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:42:43,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:42:43,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:42:43,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347467356] [2022-11-20 11:42:43,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:42:43,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:42:43,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:42:43,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:42:43,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:42:43,712 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-11-20 11:42:43,717 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) [2022-11-20 11:42:43,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:42:43,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-11-20 11:42:43,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:42:50,817 INFO L130 PetriNetUnfolder]: 5252/19341 cut-off events. [2022-11-20 11:42:50,817 INFO L131 PetriNetUnfolder]: For 20560/20632 co-relation queries the response was YES. [2022-11-20 11:42:51,027 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 258. Compared 203664 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. [2022-11-20 11:42:51,081 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 690 selfloop transitions, 185 changer transitions 16/1137 dead transitions. [2022-11-20 11:42:51,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 1137 transitions, 7437 flow [2022-11-20 11:42:51,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:42:51,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:42:51,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 9353 transitions. [2022-11-20 11:42:51,096 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6946672608437314 [2022-11-20 11:42:51,096 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 9353 transitions. [2022-11-20 11:42:51,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 9353 transitions. [2022-11-20 11:42:51,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:42:51,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 9353 transitions. [2022-11-20 11:42:51,120 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) [2022-11-20 11:42:51,140 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) [2022-11-20 11:42:51,145 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) [2022-11-20 11:42:51,145 INFO L175 Difference]: Start difference. First operand has 507 places, 596 transitions, 3194 flow. Second operand 34 states and 9353 transitions. [2022-11-20 11:42:51,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 1137 transitions, 7437 flow [2022-11-20 11:42:51,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 1137 transitions, 7068 flow, removed 29 selfloop flow, removed 14 redundant places. [2022-11-20 11:42:51,375 INFO L231 Difference]: Finished difference. Result has 545 places, 702 transitions, 4555 flow [2022-11-20 11:42:51,376 INFO L271 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} [2022-11-20 11:42:51,379 INFO L288 CegarLoopForPetriNet]: 364 programPoint places, 181 predicate places. [2022-11-20 11:42:51,379 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 702 transitions, 4555 flow [2022-11-20 11:42:51,380 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) [2022-11-20 11:42:51,381 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:42:51,381 INFO L209 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] [2022-11-20 11:42:51,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:42:51,381 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:42:51,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:42:51,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1914444500, now seen corresponding path program 5 times [2022-11-20 11:42:51,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:42:51,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052617820] [2022-11-20 11:42:51,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:42:51,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:42:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:52,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:42:52,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:42:52,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052617820] [2022-11-20 11:42:52,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052617820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:42:52,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:42:52,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:42:52,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832040333] [2022-11-20 11:42:52,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:42:52,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:42:52,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:42:52,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:42:52,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:42:52,173 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-11-20 11:42:52,177 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) [2022-11-20 11:42:52,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:42:52,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-11-20 11:42:52,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:43:00,979 INFO L130 PetriNetUnfolder]: 5591/20983 cut-off events. [2022-11-20 11:43:00,979 INFO L131 PetriNetUnfolder]: For 34088/34221 co-relation queries the response was YES. [2022-11-20 11:43:01,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52182 conditions, 20983 events. 5591/20983 cut-off events. For 34088/34221 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 225985 event pairs, 949 based on Foata normal form. 74/19752 useless extension candidates. Maximal degree in co-relation 52091. Up to 5416 conditions per place. [2022-11-20 11:43:01,357 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 764 selfloop transitions, 267 changer transitions 17/1294 dead transitions. [2022-11-20 11:43:01,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 1294 transitions, 10100 flow [2022-11-20 11:43:01,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-20 11:43:01,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-20 11:43:01,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 11202 transitions. [2022-11-20 11:43:01,377 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6899482631189948 [2022-11-20 11:43:01,378 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 11202 transitions. [2022-11-20 11:43:01,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 11202 transitions. [2022-11-20 11:43:01,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:43:01,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 11202 transitions. [2022-11-20 11:43:01,398 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) [2022-11-20 11:43:01,423 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) [2022-11-20 11:43:01,429 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) [2022-11-20 11:43:01,429 INFO L175 Difference]: Start difference. First operand has 545 places, 702 transitions, 4555 flow. Second operand 41 states and 11202 transitions. [2022-11-20 11:43:01,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 1294 transitions, 10100 flow [2022-11-20 11:43:02,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 1294 transitions, 9623 flow, removed 215 selfloop flow, removed 8 redundant places. [2022-11-20 11:43:02,190 INFO L231 Difference]: Finished difference. Result has 594 places, 803 transitions, 6223 flow [2022-11-20 11:43:02,191 INFO L271 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} [2022-11-20 11:43:02,192 INFO L288 CegarLoopForPetriNet]: 364 programPoint places, 230 predicate places. [2022-11-20 11:43:02,192 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 803 transitions, 6223 flow [2022-11-20 11:43:02,193 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) [2022-11-20 11:43:02,194 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:43:02,194 INFO L209 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] [2022-11-20 11:43:02,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:43:02,195 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:43:02,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:43:02,195 INFO L85 PathProgramCache]: Analyzing trace with hash -621129676, now seen corresponding path program 6 times [2022-11-20 11:43:02,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:43:02,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774098545] [2022-11-20 11:43:02,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:02,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:43:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:02,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:43:02,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:43:02,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774098545] [2022-11-20 11:43:02,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774098545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:43:02,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:43:02,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:43:02,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074009311] [2022-11-20 11:43:02,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:43:02,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:43:02,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:43:02,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:43:02,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:43:02,953 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-11-20 11:43:02,961 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) [2022-11-20 11:43:02,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:43:02,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-11-20 11:43:02,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:43:12,695 INFO L130 PetriNetUnfolder]: 5843/21621 cut-off events. [2022-11-20 11:43:12,695 INFO L131 PetriNetUnfolder]: For 44184/44385 co-relation queries the response was YES. [2022-11-20 11:43:13,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56749 conditions, 21621 events. 5843/21621 cut-off events. For 44184/44385 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 234779 event pairs, 803 based on Foata normal form. 133/20480 useless extension candidates. Maximal degree in co-relation 56641. Up to 5454 conditions per place. [2022-11-20 11:43:13,143 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 695 selfloop transitions, 358 changer transitions 17/1316 dead transitions. [2022-11-20 11:43:13,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 1316 transitions, 11438 flow [2022-11-20 11:43:13,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-20 11:43:13,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-11-20 11:43:13,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 11693 transitions. [2022-11-20 11:43:13,161 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6866925064599483 [2022-11-20 11:43:13,161 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 11693 transitions. [2022-11-20 11:43:13,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 11693 transitions. [2022-11-20 11:43:13,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:43:13,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 11693 transitions. [2022-11-20 11:43:13,193 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) [2022-11-20 11:43:13,212 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) [2022-11-20 11:43:13,216 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) [2022-11-20 11:43:13,217 INFO L175 Difference]: Start difference. First operand has 594 places, 803 transitions, 6223 flow. Second operand 43 states and 11693 transitions. [2022-11-20 11:43:13,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 628 places, 1316 transitions, 11438 flow [2022-11-20 11:43:14,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 1316 transitions, 10969 flow, removed 134 selfloop flow, removed 13 redundant places. [2022-11-20 11:43:14,020 INFO L231 Difference]: Finished difference. Result has 635 places, 886 transitions, 7873 flow [2022-11-20 11:43:14,021 INFO L271 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} [2022-11-20 11:43:14,022 INFO L288 CegarLoopForPetriNet]: 364 programPoint places, 271 predicate places. [2022-11-20 11:43:14,022 INFO L495 AbstractCegarLoop]: Abstraction has has 635 places, 886 transitions, 7873 flow [2022-11-20 11:43:14,023 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) [2022-11-20 11:43:14,024 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:43:14,024 INFO L209 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] [2022-11-20 11:43:14,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:43:14,024 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:43:14,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:43:14,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1164770556, now seen corresponding path program 7 times [2022-11-20 11:43:14,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:43:14,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611504943] [2022-11-20 11:43:14,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:14,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:43:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:14,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:43:14,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:43:14,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611504943] [2022-11-20 11:43:14,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611504943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:43:14,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:43:14,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:43:14,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808495287] [2022-11-20 11:43:14,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:43:14,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:43:14,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:43:14,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:43:14,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:43:14,881 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-11-20 11:43:14,887 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) [2022-11-20 11:43:14,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:43:14,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-11-20 11:43:14,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:43:25,368 INFO L130 PetriNetUnfolder]: 6160/23012 cut-off events. [2022-11-20 11:43:25,368 INFO L131 PetriNetUnfolder]: For 60499/60715 co-relation queries the response was YES. [2022-11-20 11:43:25,907 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 329. Compared 253382 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. [2022-11-20 11:43:25,979 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 833 selfloop transitions, 324 changer transitions 16/1419 dead transitions. [2022-11-20 11:43:25,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 669 places, 1419 transitions, 13518 flow [2022-11-20 11:43:25,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-20 11:43:25,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-11-20 11:43:25,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 11433 transitions. [2022-11-20 11:43:25,993 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6874098124098124 [2022-11-20 11:43:25,993 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 11433 transitions. [2022-11-20 11:43:25,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 11433 transitions. [2022-11-20 11:43:25,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:43:25,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 11433 transitions. [2022-11-20 11:43:26,014 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) [2022-11-20 11:43:26,031 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) [2022-11-20 11:43:26,034 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) [2022-11-20 11:43:26,035 INFO L175 Difference]: Start difference. First operand has 635 places, 886 transitions, 7873 flow. Second operand 42 states and 11433 transitions. [2022-11-20 11:43:26,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 669 places, 1419 transitions, 13518 flow [2022-11-20 11:43:26,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 651 places, 1419 transitions, 12913 flow, removed 125 selfloop flow, removed 18 redundant places. [2022-11-20 11:43:26,947 INFO L231 Difference]: Finished difference. Result has 680 places, 989 transitions, 9572 flow [2022-11-20 11:43:26,949 INFO L271 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} [2022-11-20 11:43:26,949 INFO L288 CegarLoopForPetriNet]: 364 programPoint places, 316 predicate places. [2022-11-20 11:43:26,950 INFO L495 AbstractCegarLoop]: Abstraction has has 680 places, 989 transitions, 9572 flow [2022-11-20 11:43:26,951 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) [2022-11-20 11:43:26,951 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:43:26,951 INFO L209 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] [2022-11-20 11:43:26,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:43:26,952 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:43:26,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:43:26,952 INFO L85 PathProgramCache]: Analyzing trace with hash 605088366, now seen corresponding path program 8 times [2022-11-20 11:43:26,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:43:26,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583764030] [2022-11-20 11:43:26,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:26,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:43:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:27,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:43:27,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:43:27,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583764030] [2022-11-20 11:43:27,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583764030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:43:27,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:43:27,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:43:27,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153892943] [2022-11-20 11:43:27,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:43:27,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:43:27,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:43:27,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:43:27,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:43:27,716 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-11-20 11:43:27,720 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) [2022-11-20 11:43:27,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:43:27,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-11-20 11:43:27,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand