./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix040.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1909c5c9-2512-468a-8306-177bbf4c44bd/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1909c5c9-2512-468a-8306-177bbf4c44bd/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1909c5c9-2512-468a-8306-177bbf4c44bd/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1909c5c9-2512-468a-8306-177bbf4c44bd/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix040.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1909c5c9-2512-468a-8306-177bbf4c44bd/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1909c5c9-2512-468a-8306-177bbf4c44bd/bin/uautomizer-tPACEb0tL8 --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 9adb0e975425d9a1b173bce1a766592f39d0541cd50cefd6e228e1140c2f9f3e --- 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-e04fb08 [2022-11-16 12:07:32,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:07:32,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:07:32,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:07:32,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:07:32,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:07:32,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:07:32,708 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:07:32,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:07:32,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:07:32,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:07:32,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:07:32,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:07:32,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:07:32,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:07:32,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:07:32,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:07:32,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:07:32,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:07:32,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:07:32,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:07:32,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:07:32,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:07:32,730 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:07:32,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:07:32,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:07:32,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:07:32,735 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:07:32,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:07:32,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:07:32,737 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:07:32,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:07:32,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:07:32,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:07:32,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:07:32,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:07:32,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:07:32,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:07:32,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:07:32,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:07:32,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:07:32,754 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1909c5c9-2512-468a-8306-177bbf4c44bd/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:07:32,806 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:07:32,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:07:32,807 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:07:32,807 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:07:32,807 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:07:32,808 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:07:32,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:07:32,808 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:07:32,809 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:07:32,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:07:32,809 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:07:32,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:07:32,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:07:32,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:07:32,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:07:32,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:07:32,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:07:32,810 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:07:32,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:07:32,811 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:07:32,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:07:32,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:07:32,811 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:07:32,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:07:32,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:07:32,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:07:32,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:07:32,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:07:32,813 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:07:32,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:07:32,813 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:07:32,813 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:07:32,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:07:32,813 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_1909c5c9-2512-468a-8306-177bbf4c44bd/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1909c5c9-2512-468a-8306-177bbf4c44bd/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9adb0e975425d9a1b173bce1a766592f39d0541cd50cefd6e228e1140c2f9f3e [2022-11-16 12:07:33,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:07:33,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:07:33,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:07:33,158 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:07:33,159 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:07:33,160 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1909c5c9-2512-468a-8306-177bbf4c44bd/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-wmm/mix040.opt.i [2022-11-16 12:07:33,228 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1909c5c9-2512-468a-8306-177bbf4c44bd/bin/uautomizer-tPACEb0tL8/data/2570327b6/da564c3a48ee414985f95a2b17987815/FLAG67fd36b00 [2022-11-16 12:07:33,745 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:07:33,751 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1909c5c9-2512-468a-8306-177bbf4c44bd/sv-benchmarks/c/pthread-wmm/mix040.opt.i [2022-11-16 12:07:33,770 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1909c5c9-2512-468a-8306-177bbf4c44bd/bin/uautomizer-tPACEb0tL8/data/2570327b6/da564c3a48ee414985f95a2b17987815/FLAG67fd36b00 [2022-11-16 12:07:34,077 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1909c5c9-2512-468a-8306-177bbf4c44bd/bin/uautomizer-tPACEb0tL8/data/2570327b6/da564c3a48ee414985f95a2b17987815 [2022-11-16 12:07:34,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:07:34,082 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:07:34,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:07:34,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:07:34,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:07:34,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:07:34" (1/1) ... [2022-11-16 12:07:34,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@567514e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:34, skipping insertion in model container [2022-11-16 12:07:34,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:07:34" (1/1) ... [2022-11-16 12:07:34,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:07:34,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:07:34,338 WARN L229 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_1909c5c9-2512-468a-8306-177bbf4c44bd/sv-benchmarks/c/pthread-wmm/mix040.opt.i[944,957] [2022-11-16 12:07:34,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:07:34,606 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:07:34,620 WARN L229 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_1909c5c9-2512-468a-8306-177bbf4c44bd/sv-benchmarks/c/pthread-wmm/mix040.opt.i[944,957] [2022-11-16 12:07:34,691 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:07:34,732 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:07:34,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:34 WrapperNode [2022-11-16 12:07:34,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:07:34,733 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:07:34,734 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:07:34,734 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:07:34,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:34" (1/1) ... [2022-11-16 12:07:34,775 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:34" (1/1) ... [2022-11-16 12:07:34,800 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 151 [2022-11-16 12:07:34,801 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:07:34,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:07:34,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:07:34,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:07:34,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:34" (1/1) ... [2022-11-16 12:07:34,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:34" (1/1) ... [2022-11-16 12:07:34,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:34" (1/1) ... [2022-11-16 12:07:34,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:34" (1/1) ... [2022-11-16 12:07:34,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:34" (1/1) ... [2022-11-16 12:07:34,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:34" (1/1) ... [2022-11-16 12:07:34,830 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:34" (1/1) ... [2022-11-16 12:07:34,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:34" (1/1) ... [2022-11-16 12:07:34,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:07:34,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:07:34,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:07:34,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:07:34,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:34" (1/1) ... [2022-11-16 12:07:34,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:07:34,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1909c5c9-2512-468a-8306-177bbf4c44bd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:34,872 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1909c5c9-2512-468a-8306-177bbf4c44bd/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:34,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1909c5c9-2512-468a-8306-177bbf4c44bd/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:07:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:07:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:07:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:07:34,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:07:34,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:07:34,920 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-16 12:07:34,920 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-16 12:07:34,920 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-16 12:07:34,921 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-16 12:07:34,921 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-16 12:07:34,921 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-16 12:07:34,921 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-16 12:07:34,922 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-16 12:07:34,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:07:34,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:07:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:07:34,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:07:34,925 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:07:35,153 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:07:35,155 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:07:35,532 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:07:35,678 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:07:35,678 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:07:35,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:07:35 BoogieIcfgContainer [2022-11-16 12:07:35,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:07:35,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:07:35,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:07:35,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:07:35,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:07:34" (1/3) ... [2022-11-16 12:07:35,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cef811b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:07:35, skipping insertion in model container [2022-11-16 12:07:35,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:34" (2/3) ... [2022-11-16 12:07:35,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cef811b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:07:35, skipping insertion in model container [2022-11-16 12:07:35,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:07:35" (3/3) ... [2022-11-16 12:07:35,692 INFO L112 eAbstractionObserver]: Analyzing ICFG mix040.opt.i [2022-11-16 12:07:35,702 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:07:35,711 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:07:35,712 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 12:07:35,712 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:07:35,797 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:07:35,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 136 transitions, 292 flow [2022-11-16 12:07:35,961 INFO L130 PetriNetUnfolder]: 2/132 cut-off events. [2022-11-16 12:07:35,961 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:07:35,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 132 events. 2/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2022-11-16 12:07:35,969 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 136 transitions, 292 flow [2022-11-16 12:07:35,979 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 132 transitions, 276 flow [2022-11-16 12:07:36,002 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:07:36,013 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;@1b3da924, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:07:36,013 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-16 12:07:36,053 INFO L130 PetriNetUnfolder]: 0/89 cut-off events. [2022-11-16 12:07:36,054 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:07:36,054 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:36,055 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] [2022-11-16 12:07:36,056 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:07:36,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:36,064 INFO L85 PathProgramCache]: Analyzing trace with hash 97696729, now seen corresponding path program 1 times [2022-11-16 12:07:36,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:36,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084963353] [2022-11-16 12:07:36,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:36,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:36,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:36,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:36,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084963353] [2022-11-16 12:07:36,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084963353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:36,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:36,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:07:36,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10155860] [2022-11-16 12:07:36,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:36,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:07:36,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:36,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:07:36,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:07:36,932 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 136 [2022-11-16 12:07:36,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 132 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:36,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:36,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 136 [2022-11-16 12:07:36,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:37,031 INFO L130 PetriNetUnfolder]: 10/170 cut-off events. [2022-11-16 12:07:37,031 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-16 12:07:37,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 170 events. 10/170 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 262 event pairs, 2 based on Foata normal form. 6/169 useless extension candidates. Maximal degree in co-relation 155. Up to 17 conditions per place. [2022-11-16 12:07:37,034 INFO L137 encePairwiseOnDemand]: 131/136 looper letters, 9 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2022-11-16 12:07:37,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 130 transitions, 294 flow [2022-11-16 12:07:37,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:07:37,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:07:37,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2022-11-16 12:07:37,059 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9436274509803921 [2022-11-16 12:07:37,060 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2022-11-16 12:07:37,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2022-11-16 12:07:37,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:37,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2022-11-16 12:07:37,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:37,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:37,075 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:37,077 INFO L175 Difference]: Start difference. First operand has 143 places, 132 transitions, 276 flow. Second operand 3 states and 385 transitions. [2022-11-16 12:07:37,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 130 transitions, 294 flow [2022-11-16 12:07:37,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 130 transitions, 290 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:07:37,089 INFO L231 Difference]: Finished difference. Result has 139 places, 128 transitions, 268 flow [2022-11-16 12:07:37,092 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=139, PETRI_TRANSITIONS=128} [2022-11-16 12:07:37,098 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, -4 predicate places. [2022-11-16 12:07:37,098 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 128 transitions, 268 flow [2022-11-16 12:07:37,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:37,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:37,099 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] [2022-11-16 12:07:37,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:07:37,100 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:07:37,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:37,101 INFO L85 PathProgramCache]: Analyzing trace with hash 366503190, now seen corresponding path program 1 times [2022-11-16 12:07:37,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:37,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772284065] [2022-11-16 12:07:37,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:37,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:37,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:37,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:37,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772284065] [2022-11-16 12:07:37,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772284065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:37,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:37,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:07:37,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312750616] [2022-11-16 12:07:37,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:37,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:07:37,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:37,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:07:37,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:07:37,652 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 136 [2022-11-16 12:07:37,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 128 transitions, 268 flow. Second operand has 7 states, 7 states have (on average 108.28571428571429) internal successors, (758), 7 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:37,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:37,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 136 [2022-11-16 12:07:37,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:39,662 INFO L130 PetriNetUnfolder]: 3270/8009 cut-off events. [2022-11-16 12:07:39,662 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2022-11-16 12:07:39,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12917 conditions, 8009 events. 3270/8009 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 73928 event pairs, 426 based on Foata normal form. 0/7836 useless extension candidates. Maximal degree in co-relation 12856. Up to 1498 conditions per place. [2022-11-16 12:07:39,727 INFO L137 encePairwiseOnDemand]: 124/136 looper letters, 35 selfloop transitions, 8 changer transitions 92/224 dead transitions. [2022-11-16 12:07:39,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 224 transitions, 710 flow [2022-11-16 12:07:39,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:07:39,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:07:39,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1503 transitions. [2022-11-16 12:07:39,732 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8501131221719457 [2022-11-16 12:07:39,733 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1503 transitions. [2022-11-16 12:07:39,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1503 transitions. [2022-11-16 12:07:39,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:39,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1503 transitions. [2022-11-16 12:07:39,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.61538461538461) internal successors, (1503), 13 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:39,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:39,748 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:39,748 INFO L175 Difference]: Start difference. First operand has 139 places, 128 transitions, 268 flow. Second operand 13 states and 1503 transitions. [2022-11-16 12:07:39,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 224 transitions, 710 flow [2022-11-16 12:07:39,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 224 transitions, 700 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:07:39,755 INFO L231 Difference]: Finished difference. Result has 161 places, 120 transitions, 350 flow [2022-11-16 12:07:39,755 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=350, PETRI_PLACES=161, PETRI_TRANSITIONS=120} [2022-11-16 12:07:39,756 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 18 predicate places. [2022-11-16 12:07:39,757 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 120 transitions, 350 flow [2022-11-16 12:07:39,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.28571428571429) internal successors, (758), 7 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:39,758 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:39,758 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] [2022-11-16 12:07:39,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:07:39,759 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:07:39,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:39,760 INFO L85 PathProgramCache]: Analyzing trace with hash 737299577, now seen corresponding path program 1 times [2022-11-16 12:07:39,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:39,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92816259] [2022-11-16 12:07:39,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:39,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:40,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:40,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:40,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92816259] [2022-11-16 12:07:40,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92816259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:40,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:40,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:07:40,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072562435] [2022-11-16 12:07:40,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:40,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:07:40,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:40,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:07:40,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:07:40,085 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 136 [2022-11-16 12:07:40,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 120 transitions, 350 flow. Second operand has 7 states, 7 states have (on average 108.57142857142857) internal successors, (760), 7 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:40,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:40,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 136 [2022-11-16 12:07:40,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:41,490 INFO L130 PetriNetUnfolder]: 2063/4583 cut-off events. [2022-11-16 12:07:41,491 INFO L131 PetriNetUnfolder]: For 10895/10895 co-relation queries the response was YES. [2022-11-16 12:07:41,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15044 conditions, 4583 events. 2063/4583 cut-off events. For 10895/10895 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 36000 event pairs, 388 based on Foata normal form. 88/4518 useless extension candidates. Maximal degree in co-relation 14971. Up to 1263 conditions per place. [2022-11-16 12:07:41,537 INFO L137 encePairwiseOnDemand]: 123/136 looper letters, 43 selfloop transitions, 18 changer transitions 82/232 dead transitions. [2022-11-16 12:07:41,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 232 transitions, 1404 flow [2022-11-16 12:07:41,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:07:41,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:07:41,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1502 transitions. [2022-11-16 12:07:41,543 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8495475113122172 [2022-11-16 12:07:41,543 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1502 transitions. [2022-11-16 12:07:41,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1502 transitions. [2022-11-16 12:07:41,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:41,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1502 transitions. [2022-11-16 12:07:41,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.53846153846153) internal successors, (1502), 13 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:41,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:41,554 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:41,555 INFO L175 Difference]: Start difference. First operand has 161 places, 120 transitions, 350 flow. Second operand 13 states and 1502 transitions. [2022-11-16 12:07:41,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 232 transitions, 1404 flow [2022-11-16 12:07:41,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 232 transitions, 1376 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-11-16 12:07:41,584 INFO L231 Difference]: Finished difference. Result has 158 places, 133 transitions, 575 flow [2022-11-16 12:07:41,584 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=575, PETRI_PLACES=158, PETRI_TRANSITIONS=133} [2022-11-16 12:07:41,585 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 15 predicate places. [2022-11-16 12:07:41,585 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 133 transitions, 575 flow [2022-11-16 12:07:41,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.57142857142857) internal successors, (760), 7 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:41,586 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:41,586 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] [2022-11-16 12:07:41,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:07:41,587 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:07:41,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:41,588 INFO L85 PathProgramCache]: Analyzing trace with hash 641659860, now seen corresponding path program 1 times [2022-11-16 12:07:41,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:41,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971285528] [2022-11-16 12:07:41,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:41,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:41,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:41,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:41,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:41,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971285528] [2022-11-16 12:07:41,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971285528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:41,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:41,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:07:41,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141565571] [2022-11-16 12:07:41,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:41,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:07:41,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:41,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:07:41,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:07:41,869 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 136 [2022-11-16 12:07:41,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 133 transitions, 575 flow. Second operand has 7 states, 7 states have (on average 108.71428571428571) internal successors, (761), 7 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:41,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:41,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 136 [2022-11-16 12:07:41,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:43,018 INFO L130 PetriNetUnfolder]: 1615/3711 cut-off events. [2022-11-16 12:07:43,018 INFO L131 PetriNetUnfolder]: For 17276/17300 co-relation queries the response was YES. [2022-11-16 12:07:43,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14884 conditions, 3711 events. 1615/3711 cut-off events. For 17276/17300 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 28378 event pairs, 331 based on Foata normal form. 69/3644 useless extension candidates. Maximal degree in co-relation 14799. Up to 1052 conditions per place. [2022-11-16 12:07:43,067 INFO L137 encePairwiseOnDemand]: 123/136 looper letters, 44 selfloop transitions, 29 changer transitions 61/223 dead transitions. [2022-11-16 12:07:43,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 223 transitions, 1637 flow [2022-11-16 12:07:43,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:07:43,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:07:43,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1495 transitions. [2022-11-16 12:07:43,072 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8455882352941176 [2022-11-16 12:07:43,072 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1495 transitions. [2022-11-16 12:07:43,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1495 transitions. [2022-11-16 12:07:43,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:43,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1495 transitions. [2022-11-16 12:07:43,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.0) internal successors, (1495), 13 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:43,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:43,083 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:43,083 INFO L175 Difference]: Start difference. First operand has 158 places, 133 transitions, 575 flow. Second operand 13 states and 1495 transitions. [2022-11-16 12:07:43,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 223 transitions, 1637 flow [2022-11-16 12:07:43,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 223 transitions, 1565 flow, removed 36 selfloop flow, removed 3 redundant places. [2022-11-16 12:07:43,150 INFO L231 Difference]: Finished difference. Result has 170 places, 143 transitions, 824 flow [2022-11-16 12:07:43,150 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=824, PETRI_PLACES=170, PETRI_TRANSITIONS=143} [2022-11-16 12:07:43,151 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 27 predicate places. [2022-11-16 12:07:43,151 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 143 transitions, 824 flow [2022-11-16 12:07:43,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.71428571428571) internal successors, (761), 7 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:43,152 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:43,152 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] [2022-11-16 12:07:43,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:07:43,153 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:07:43,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:43,153 INFO L85 PathProgramCache]: Analyzing trace with hash -917619096, now seen corresponding path program 1 times [2022-11-16 12:07:43,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:43,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174984625] [2022-11-16 12:07:43,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:43,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:43,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:43,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:43,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174984625] [2022-11-16 12:07:43,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174984625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:43,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:43,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:07:43,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853939968] [2022-11-16 12:07:43,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:43,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:07:43,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:43,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:07:43,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:07:43,542 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 136 [2022-11-16 12:07:43,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 143 transitions, 824 flow. Second operand has 7 states, 7 states have (on average 108.85714285714286) internal successors, (762), 7 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:43,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:43,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 136 [2022-11-16 12:07:43,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:44,866 INFO L130 PetriNetUnfolder]: 1500/3772 cut-off events. [2022-11-16 12:07:44,866 INFO L131 PetriNetUnfolder]: For 19535/19535 co-relation queries the response was YES. [2022-11-16 12:07:44,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16162 conditions, 3772 events. 1500/3772 cut-off events. For 19535/19535 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 31514 event pairs, 293 based on Foata normal form. 45/3710 useless extension candidates. Maximal degree in co-relation 16064. Up to 945 conditions per place. [2022-11-16 12:07:44,923 INFO L137 encePairwiseOnDemand]: 124/136 looper letters, 49 selfloop transitions, 31 changer transitions 59/228 dead transitions. [2022-11-16 12:07:44,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 228 transitions, 1937 flow [2022-11-16 12:07:44,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:07:44,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:07:44,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1482 transitions. [2022-11-16 12:07:44,928 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8382352941176471 [2022-11-16 12:07:44,928 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1482 transitions. [2022-11-16 12:07:44,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1482 transitions. [2022-11-16 12:07:44,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:44,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1482 transitions. [2022-11-16 12:07:44,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 114.0) internal successors, (1482), 13 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:44,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:44,939 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:44,939 INFO L175 Difference]: Start difference. First operand has 170 places, 143 transitions, 824 flow. Second operand 13 states and 1482 transitions. [2022-11-16 12:07:44,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 228 transitions, 1937 flow [2022-11-16 12:07:44,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 228 transitions, 1809 flow, removed 64 selfloop flow, removed 15 redundant places. [2022-11-16 12:07:44,988 INFO L231 Difference]: Finished difference. Result has 170 places, 149 transitions, 1022 flow [2022-11-16 12:07:44,989 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1022, PETRI_PLACES=170, PETRI_TRANSITIONS=149} [2022-11-16 12:07:44,992 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 27 predicate places. [2022-11-16 12:07:44,993 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 149 transitions, 1022 flow [2022-11-16 12:07:44,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.85714285714286) internal successors, (762), 7 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:44,994 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:44,994 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] [2022-11-16 12:07:44,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:07:44,995 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:07:44,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:44,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1181114223, now seen corresponding path program 1 times [2022-11-16 12:07:44,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:44,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000833731] [2022-11-16 12:07:44,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:44,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:45,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:45,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:45,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000833731] [2022-11-16 12:07:45,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000833731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:45,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:45,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:07:45,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744787785] [2022-11-16 12:07:45,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:45,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:07:45,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:45,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:07:45,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:07:45,285 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 136 [2022-11-16 12:07:45,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 149 transitions, 1022 flow. Second operand has 6 states, 6 states have (on average 114.16666666666667) internal successors, (685), 6 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:45,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:45,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 136 [2022-11-16 12:07:45,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:49,310 INFO L130 PetriNetUnfolder]: 10376/19110 cut-off events. [2022-11-16 12:07:49,311 INFO L131 PetriNetUnfolder]: For 79237/103043 co-relation queries the response was YES. [2022-11-16 12:07:49,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55803 conditions, 19110 events. 10376/19110 cut-off events. For 79237/103043 co-relation queries the response was YES. Maximal size of possible extension queue 1501. Compared 176139 event pairs, 586 based on Foata normal form. 381/18015 useless extension candidates. Maximal degree in co-relation 55710. Up to 6507 conditions per place. [2022-11-16 12:07:49,605 INFO L137 encePairwiseOnDemand]: 125/136 looper letters, 71 selfloop transitions, 20 changer transitions 14/231 dead transitions. [2022-11-16 12:07:49,605 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 231 transitions, 1864 flow [2022-11-16 12:07:49,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:07:49,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:07:49,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1203 transitions. [2022-11-16 12:07:49,609 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8845588235294117 [2022-11-16 12:07:49,610 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1203 transitions. [2022-11-16 12:07:49,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1203 transitions. [2022-11-16 12:07:49,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:49,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1203 transitions. [2022-11-16 12:07:49,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 120.3) internal successors, (1203), 10 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:49,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:49,621 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:49,622 INFO L175 Difference]: Start difference. First operand has 170 places, 149 transitions, 1022 flow. Second operand 10 states and 1203 transitions. [2022-11-16 12:07:49,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 231 transitions, 1864 flow [2022-11-16 12:07:49,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 231 transitions, 1807 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-16 12:07:49,688 INFO L231 Difference]: Finished difference. Result has 172 places, 167 transitions, 1129 flow [2022-11-16 12:07:49,689 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1129, PETRI_PLACES=172, PETRI_TRANSITIONS=167} [2022-11-16 12:07:49,692 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 29 predicate places. [2022-11-16 12:07:49,692 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 167 transitions, 1129 flow [2022-11-16 12:07:49,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.16666666666667) internal successors, (685), 6 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:49,693 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:49,693 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] [2022-11-16 12:07:49,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:07:49,694 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:07:49,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:49,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1499244212, now seen corresponding path program 1 times [2022-11-16 12:07:49,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:49,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639724191] [2022-11-16 12:07:49,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:49,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:50,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:50,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:50,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639724191] [2022-11-16 12:07:50,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639724191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:50,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:50,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:07:50,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59326073] [2022-11-16 12:07:50,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:50,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:07:50,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:50,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:07:50,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:07:50,188 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 136 [2022-11-16 12:07:50,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 167 transitions, 1129 flow. Second operand has 7 states, 7 states have (on average 108.85714285714286) internal successors, (762), 7 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:50,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:50,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 136 [2022-11-16 12:07:50,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:52,783 INFO L130 PetriNetUnfolder]: 3802/11923 cut-off events. [2022-11-16 12:07:52,783 INFO L131 PetriNetUnfolder]: For 43323/46804 co-relation queries the response was YES. [2022-11-16 12:07:52,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40815 conditions, 11923 events. 3802/11923 cut-off events. For 43323/46804 co-relation queries the response was YES. Maximal size of possible extension queue 938. Compared 141857 event pairs, 1319 based on Foata normal form. 248/11097 useless extension candidates. Maximal degree in co-relation 40713. Up to 3226 conditions per place. [2022-11-16 12:07:52,942 INFO L137 encePairwiseOnDemand]: 124/136 looper letters, 83 selfloop transitions, 45 changer transitions 15/250 dead transitions. [2022-11-16 12:07:52,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 250 transitions, 2330 flow [2022-11-16 12:07:52,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:07:52,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:07:52,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1483 transitions. [2022-11-16 12:07:52,948 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8388009049773756 [2022-11-16 12:07:52,948 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1483 transitions. [2022-11-16 12:07:52,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1483 transitions. [2022-11-16 12:07:52,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:52,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1483 transitions. [2022-11-16 12:07:52,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 114.07692307692308) internal successors, (1483), 13 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:52,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:52,959 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:52,959 INFO L175 Difference]: Start difference. First operand has 172 places, 167 transitions, 1129 flow. Second operand 13 states and 1483 transitions. [2022-11-16 12:07:52,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 250 transitions, 2330 flow [2022-11-16 12:07:53,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 250 transitions, 2328 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:07:53,072 INFO L231 Difference]: Finished difference. Result has 193 places, 188 transitions, 1626 flow [2022-11-16 12:07:53,072 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=1127, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1626, PETRI_PLACES=193, PETRI_TRANSITIONS=188} [2022-11-16 12:07:53,073 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 50 predicate places. [2022-11-16 12:07:53,073 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 188 transitions, 1626 flow [2022-11-16 12:07:53,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.85714285714286) internal successors, (762), 7 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:53,074 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:53,074 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] [2022-11-16 12:07:53,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:07:53,074 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:07:53,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:53,075 INFO L85 PathProgramCache]: Analyzing trace with hash 217649848, now seen corresponding path program 1 times [2022-11-16 12:07:53,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:53,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272278116] [2022-11-16 12:07:53,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:53,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:53,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:53,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:53,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272278116] [2022-11-16 12:07:53,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272278116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:53,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:53,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:07:53,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152677234] [2022-11-16 12:07:53,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:53,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:07:53,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:53,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:07:53,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:07:53,450 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 136 [2022-11-16 12:07:53,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 188 transitions, 1626 flow. Second operand has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:53,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:53,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 136 [2022-11-16 12:07:53,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:59,180 INFO L130 PetriNetUnfolder]: 14503/27912 cut-off events. [2022-11-16 12:07:59,180 INFO L131 PetriNetUnfolder]: For 137166/157609 co-relation queries the response was YES. [2022-11-16 12:07:59,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110377 conditions, 27912 events. 14503/27912 cut-off events. For 137166/157609 co-relation queries the response was YES. Maximal size of possible extension queue 2295. Compared 287062 event pairs, 456 based on Foata normal form. 1237/27973 useless extension candidates. Maximal degree in co-relation 110268. Up to 9226 conditions per place. [2022-11-16 12:07:59,513 INFO L137 encePairwiseOnDemand]: 125/136 looper letters, 108 selfloop transitions, 38 changer transitions 19/305 dead transitions. [2022-11-16 12:07:59,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 305 transitions, 3250 flow [2022-11-16 12:07:59,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:07:59,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:07:59,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1567 transitions. [2022-11-16 12:07:59,517 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8863122171945701 [2022-11-16 12:07:59,517 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1567 transitions. [2022-11-16 12:07:59,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1567 transitions. [2022-11-16 12:07:59,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:59,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1567 transitions. [2022-11-16 12:07:59,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 120.53846153846153) internal successors, (1567), 13 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:59,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:59,527 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:59,527 INFO L175 Difference]: Start difference. First operand has 193 places, 188 transitions, 1626 flow. Second operand 13 states and 1567 transitions. [2022-11-16 12:07:59,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 305 transitions, 3250 flow [2022-11-16 12:08:00,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 305 transitions, 3130 flow, removed 60 selfloop flow, removed 0 redundant places. [2022-11-16 12:08:00,376 INFO L231 Difference]: Finished difference. Result has 211 places, 202 transitions, 1697 flow [2022-11-16 12:08:00,377 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=1506, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1697, PETRI_PLACES=211, PETRI_TRANSITIONS=202} [2022-11-16 12:08:00,378 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 68 predicate places. [2022-11-16 12:08:00,378 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 202 transitions, 1697 flow [2022-11-16 12:08:00,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:00,379 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:08:00,379 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] [2022-11-16 12:08:00,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:08:00,380 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:08:00,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:00,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1259593149, now seen corresponding path program 1 times [2022-11-16 12:08:00,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:00,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428071294] [2022-11-16 12:08:00,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:00,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:00,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:08:00,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:00,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428071294] [2022-11-16 12:08:00,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428071294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:00,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:00,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:08:00,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998458852] [2022-11-16 12:08:00,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:00,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:08:00,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:00,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:08:00,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:08:00,792 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 136 [2022-11-16 12:08:00,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 202 transitions, 1697 flow. Second operand has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:00,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:08:00,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 136 [2022-11-16 12:08:00,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:08:07,106 INFO L130 PetriNetUnfolder]: 13861/27536 cut-off events. [2022-11-16 12:08:07,107 INFO L131 PetriNetUnfolder]: For 200872/225097 co-relation queries the response was YES. [2022-11-16 12:08:07,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132622 conditions, 27536 events. 13861/27536 cut-off events. For 200872/225097 co-relation queries the response was YES. Maximal size of possible extension queue 2312. Compared 293091 event pairs, 360 based on Foata normal form. 1725/28154 useless extension candidates. Maximal degree in co-relation 132504. Up to 8731 conditions per place. [2022-11-16 12:08:07,410 INFO L137 encePairwiseOnDemand]: 125/136 looper letters, 90 selfloop transitions, 58 changer transitions 67/342 dead transitions. [2022-11-16 12:08:07,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 342 transitions, 3826 flow [2022-11-16 12:08:07,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:08:07,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 12:08:07,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1930 transitions. [2022-11-16 12:08:07,416 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8869485294117647 [2022-11-16 12:08:07,416 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1930 transitions. [2022-11-16 12:08:07,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1930 transitions. [2022-11-16 12:08:07,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:08:07,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1930 transitions. [2022-11-16 12:08:07,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 120.625) internal successors, (1930), 16 states have internal predecessors, (1930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:07,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 136.0) internal successors, (2312), 17 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:07,428 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 136.0) internal successors, (2312), 17 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:07,428 INFO L175 Difference]: Start difference. First operand has 211 places, 202 transitions, 1697 flow. Second operand 16 states and 1930 transitions. [2022-11-16 12:08:07,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 342 transitions, 3826 flow [2022-11-16 12:08:13,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 342 transitions, 3676 flow, removed 58 selfloop flow, removed 9 redundant places. [2022-11-16 12:08:13,425 INFO L231 Difference]: Finished difference. Result has 221 places, 214 transitions, 1830 flow [2022-11-16 12:08:13,426 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=1555, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1830, PETRI_PLACES=221, PETRI_TRANSITIONS=214} [2022-11-16 12:08:13,426 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 78 predicate places. [2022-11-16 12:08:13,427 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 214 transitions, 1830 flow [2022-11-16 12:08:13,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:13,427 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:08:13,428 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] [2022-11-16 12:08:13,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:08:13,428 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:08:13,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:13,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1587561443, now seen corresponding path program 1 times [2022-11-16 12:08:13,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:13,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335974639] [2022-11-16 12:08:13,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:13,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:13,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:08:13,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:13,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335974639] [2022-11-16 12:08:13,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335974639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:13,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:13,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:08:13,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298711375] [2022-11-16 12:08:13,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:13,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:08:13,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:13,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:08:13,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:08:13,861 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 136 [2022-11-16 12:08:13,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 214 transitions, 1830 flow. Second operand has 9 states, 9 states have (on average 114.0) internal successors, (1026), 9 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:13,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:08:13,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 136 [2022-11-16 12:08:13,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:08:19,777 INFO L130 PetriNetUnfolder]: 13051/26352 cut-off events. [2022-11-16 12:08:19,777 INFO L131 PetriNetUnfolder]: For 191761/211374 co-relation queries the response was YES. [2022-11-16 12:08:20,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124061 conditions, 26352 events. 13051/26352 cut-off events. For 191761/211374 co-relation queries the response was YES. Maximal size of possible extension queue 2266. Compared 284735 event pairs, 351 based on Foata normal form. 1297/26558 useless extension candidates. Maximal degree in co-relation 124007. Up to 5371 conditions per place. [2022-11-16 12:08:20,067 INFO L137 encePairwiseOnDemand]: 125/136 looper letters, 61 selfloop transitions, 59 changer transitions 71/318 dead transitions. [2022-11-16 12:08:20,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 318 transitions, 3331 flow [2022-11-16 12:08:20,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:08:20,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-16 12:08:20,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2257 transitions. [2022-11-16 12:08:20,072 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8734520123839009 [2022-11-16 12:08:20,072 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2257 transitions. [2022-11-16 12:08:20,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2257 transitions. [2022-11-16 12:08:20,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:08:20,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2257 transitions. [2022-11-16 12:08:20,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 118.78947368421052) internal successors, (2257), 19 states have internal predecessors, (2257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:20,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 136.0) internal successors, (2720), 20 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:20,084 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 136.0) internal successors, (2720), 20 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:20,084 INFO L175 Difference]: Start difference. First operand has 221 places, 214 transitions, 1830 flow. Second operand 19 states and 2257 transitions. [2022-11-16 12:08:20,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 318 transitions, 3331 flow [2022-11-16 12:08:32,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 318 transitions, 2722 flow, removed 259 selfloop flow, removed 27 redundant places. [2022-11-16 12:08:32,460 INFO L231 Difference]: Finished difference. Result has 210 places, 206 transitions, 1495 flow [2022-11-16 12:08:32,460 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=1407, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1495, PETRI_PLACES=210, PETRI_TRANSITIONS=206} [2022-11-16 12:08:32,461 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 67 predicate places. [2022-11-16 12:08:32,461 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 206 transitions, 1495 flow [2022-11-16 12:08:32,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 114.0) internal successors, (1026), 9 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:32,463 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:08:32,463 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] [2022-11-16 12:08:32,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:08:32,463 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:08:32,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:32,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1676905411, now seen corresponding path program 1 times [2022-11-16 12:08:32,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:32,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69319818] [2022-11-16 12:08:32,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:32,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:33,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:08:33,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:33,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69319818] [2022-11-16 12:08:33,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69319818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:33,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:33,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 12:08:33,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397173395] [2022-11-16 12:08:33,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:33,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:08:33,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:33,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:08:33,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:08:33,620 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 136 [2022-11-16 12:08:33,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 206 transitions, 1495 flow. Second operand has 13 states, 13 states have (on average 101.46153846153847) internal successors, (1319), 13 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:33,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:08:33,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 136 [2022-11-16 12:08:33,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:08:36,012 INFO L130 PetriNetUnfolder]: 5306/17615 cut-off events. [2022-11-16 12:08:36,012 INFO L131 PetriNetUnfolder]: For 51720/54783 co-relation queries the response was YES. [2022-11-16 12:08:36,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59537 conditions, 17615 events. 5306/17615 cut-off events. For 51720/54783 co-relation queries the response was YES. Maximal size of possible extension queue 2321. Compared 249914 event pairs, 22 based on Foata normal form. 3/16467 useless extension candidates. Maximal degree in co-relation 59421. Up to 1844 conditions per place. [2022-11-16 12:08:36,252 INFO L137 encePairwiseOnDemand]: 117/136 looper letters, 75 selfloop transitions, 87 changer transitions 31/334 dead transitions. [2022-11-16 12:08:36,252 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 334 transitions, 3608 flow [2022-11-16 12:08:36,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:08:36,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:08:36,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1884 transitions. [2022-11-16 12:08:36,257 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7696078431372549 [2022-11-16 12:08:36,258 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1884 transitions. [2022-11-16 12:08:36,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1884 transitions. [2022-11-16 12:08:36,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:08:36,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1884 transitions. [2022-11-16 12:08:36,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 104.66666666666667) internal successors, (1884), 18 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:36,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 136.0) internal successors, (2584), 19 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:36,270 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 136.0) internal successors, (2584), 19 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:36,270 INFO L175 Difference]: Start difference. First operand has 210 places, 206 transitions, 1495 flow. Second operand 18 states and 1884 transitions. [2022-11-16 12:08:36,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 334 transitions, 3608 flow [2022-11-16 12:08:39,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 334 transitions, 3308 flow, removed 106 selfloop flow, removed 17 redundant places. [2022-11-16 12:08:39,310 INFO L231 Difference]: Finished difference. Result has 215 places, 271 transitions, 2619 flow [2022-11-16 12:08:39,310 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=1363, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2619, PETRI_PLACES=215, PETRI_TRANSITIONS=271} [2022-11-16 12:08:39,311 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 72 predicate places. [2022-11-16 12:08:39,311 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 271 transitions, 2619 flow [2022-11-16 12:08:39,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 101.46153846153847) internal successors, (1319), 13 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:39,311 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:08:39,312 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] [2022-11-16 12:08:39,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:08:39,312 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:08:39,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:39,312 INFO L85 PathProgramCache]: Analyzing trace with hash 735133601, now seen corresponding path program 2 times [2022-11-16 12:08:39,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:39,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429248174] [2022-11-16 12:08:39,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:39,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:39,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:39,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:08:39,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:39,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429248174] [2022-11-16 12:08:39,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429248174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:39,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:39,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:08:39,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510345683] [2022-11-16 12:08:39,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:39,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:08:39,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:39,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:08:39,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:08:39,619 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 136 [2022-11-16 12:08:39,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 271 transitions, 2619 flow. Second operand has 8 states, 8 states have (on average 107.375) internal successors, (859), 8 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:39,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:08:39,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 136 [2022-11-16 12:08:39,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:08:42,704 INFO L130 PetriNetUnfolder]: 6401/21417 cut-off events. [2022-11-16 12:08:42,704 INFO L131 PetriNetUnfolder]: For 46439/47072 co-relation queries the response was YES. [2022-11-16 12:08:42,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65740 conditions, 21417 events. 6401/21417 cut-off events. For 46439/47072 co-relation queries the response was YES. Maximal size of possible extension queue 2708. Compared 315736 event pairs, 64 based on Foata normal form. 7/20169 useless extension candidates. Maximal degree in co-relation 65699. Up to 2529 conditions per place. [2022-11-16 12:08:42,953 INFO L137 encePairwiseOnDemand]: 124/136 looper letters, 24 selfloop transitions, 8 changer transitions 146/318 dead transitions. [2022-11-16 12:08:42,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 318 transitions, 3587 flow [2022-11-16 12:08:42,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:08:42,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:08:42,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1006 transitions. [2022-11-16 12:08:42,955 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8218954248366013 [2022-11-16 12:08:42,956 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1006 transitions. [2022-11-16 12:08:42,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1006 transitions. [2022-11-16 12:08:42,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:08:42,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1006 transitions. [2022-11-16 12:08:42,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 111.77777777777777) internal successors, (1006), 9 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:42,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 136.0) internal successors, (1360), 10 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:42,959 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 136.0) internal successors, (1360), 10 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:42,960 INFO L175 Difference]: Start difference. First operand has 215 places, 271 transitions, 2619 flow. Second operand 9 states and 1006 transitions. [2022-11-16 12:08:42,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 318 transitions, 3587 flow [2022-11-16 12:08:47,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 318 transitions, 3547 flow, removed 16 selfloop flow, removed 7 redundant places. [2022-11-16 12:08:47,051 INFO L231 Difference]: Finished difference. Result has 217 places, 170 transitions, 948 flow [2022-11-16 12:08:47,052 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=2583, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=948, PETRI_PLACES=217, PETRI_TRANSITIONS=170} [2022-11-16 12:08:47,053 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 74 predicate places. [2022-11-16 12:08:47,053 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 170 transitions, 948 flow [2022-11-16 12:08:47,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 107.375) internal successors, (859), 8 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:47,054 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:08:47,054 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] [2022-11-16 12:08:47,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:08:47,054 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:08:47,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:47,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1186555581, now seen corresponding path program 3 times [2022-11-16 12:08:47,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:47,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357918324] [2022-11-16 12:08:47,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:47,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:48,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:08:48,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:48,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357918324] [2022-11-16 12:08:48,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357918324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:48,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:48,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:08:48,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153122554] [2022-11-16 12:08:48,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:48,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:08:48,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:48,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:08:48,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:08:48,043 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 136 [2022-11-16 12:08:48,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 170 transitions, 948 flow. Second operand has 10 states, 10 states have (on average 112.1) internal successors, (1121), 10 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:48,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:08:48,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 136 [2022-11-16 12:08:48,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand