./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix044.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9d2836-9b3a-4f92-8a59-eb5a720c2b7f/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9d2836-9b3a-4f92-8a59-eb5a720c2b7f/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9d2836-9b3a-4f92-8a59-eb5a720c2b7f/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9d2836-9b3a-4f92-8a59-eb5a720c2b7f/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix044.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9d2836-9b3a-4f92-8a59-eb5a720c2b7f/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9d2836-9b3a-4f92-8a59-eb5a720c2b7f/bin/uautomizer-J5u9QxTXDZ --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 bb408c890b0d52a937687fd58d564d57121120b7f4647156375768e776a678b4 --- 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-dbf71c6-m [2022-10-17 10:20:35,544 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:20:35,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:20:35,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:20:35,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:20:35,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:20:35,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:20:35,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:20:35,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:20:35,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:20:35,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:20:35,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:20:35,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:20:35,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:20:35,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:20:35,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:20:35,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:20:35,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:20:35,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:20:35,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:20:35,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:20:35,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:20:35,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:20:35,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:20:35,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:20:35,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:20:35,674 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:20:35,676 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:20:35,676 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:20:35,677 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:20:35,678 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:20:35,679 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:20:35,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:20:35,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:20:35,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:20:35,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:20:35,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:20:35,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:20:35,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:20:35,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:20:35,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:20:35,688 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9d2836-9b3a-4f92-8a59-eb5a720c2b7f/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:20:35,735 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:20:35,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:20:35,736 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:20:35,737 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:20:35,737 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:20:35,738 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:20:35,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:20:35,738 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:20:35,739 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:20:35,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:20:35,740 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:20:35,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:20:35,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:20:35,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:20:35,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:20:35,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:20:35,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:20:35,742 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:20:35,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:20:35,742 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:20:35,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:20:35,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:20:35,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:20:35,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:20:35,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:20:35,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:20:35,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:20:35,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:20:35,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:20:35,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:20:35,746 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:20:35,747 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:20:35,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:20:35,747 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_dd9d2836-9b3a-4f92-8a59-eb5a720c2b7f/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9d2836-9b3a-4f92-8a59-eb5a720c2b7f/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb408c890b0d52a937687fd58d564d57121120b7f4647156375768e776a678b4 [2022-10-17 10:20:36,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:20:36,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:20:36,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:20:36,145 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:20:36,146 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:20:36,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9d2836-9b3a-4f92-8a59-eb5a720c2b7f/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-wmm/mix044.opt.i [2022-10-17 10:20:36,222 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9d2836-9b3a-4f92-8a59-eb5a720c2b7f/bin/uautomizer-J5u9QxTXDZ/data/f7108e84d/9c7d38b8c535462d96367f0257aca905/FLAG4c2cde234 [2022-10-17 10:20:36,906 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:20:36,907 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9d2836-9b3a-4f92-8a59-eb5a720c2b7f/sv-benchmarks/c/pthread-wmm/mix044.opt.i [2022-10-17 10:20:36,939 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9d2836-9b3a-4f92-8a59-eb5a720c2b7f/bin/uautomizer-J5u9QxTXDZ/data/f7108e84d/9c7d38b8c535462d96367f0257aca905/FLAG4c2cde234 [2022-10-17 10:20:37,178 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9d2836-9b3a-4f92-8a59-eb5a720c2b7f/bin/uautomizer-J5u9QxTXDZ/data/f7108e84d/9c7d38b8c535462d96367f0257aca905 [2022-10-17 10:20:37,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:20:37,184 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:20:37,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:20:37,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:20:37,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:20:37,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:20:37" (1/1) ... [2022-10-17 10:20:37,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21cc2757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:37, skipping insertion in model container [2022-10-17 10:20:37,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:20:37" (1/1) ... [2022-10-17 10:20:37,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:20:37,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:20:37,463 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9d2836-9b3a-4f92-8a59-eb5a720c2b7f/sv-benchmarks/c/pthread-wmm/mix044.opt.i[944,957] [2022-10-17 10:20:37,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:20:37,837 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:20:37,859 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9d2836-9b3a-4f92-8a59-eb5a720c2b7f/sv-benchmarks/c/pthread-wmm/mix044.opt.i[944,957] [2022-10-17 10:20:37,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:20:38,008 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:20:38,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:38 WrapperNode [2022-10-17 10:20:38,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:20:38,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:20:38,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:20:38,010 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:20:38,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:38" (1/1) ... [2022-10-17 10:20:38,062 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:38" (1/1) ... [2022-10-17 10:20:38,125 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 298 [2022-10-17 10:20:38,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:20:38,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:20:38,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:20:38,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:20:38,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:38" (1/1) ... [2022-10-17 10:20:38,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:38" (1/1) ... [2022-10-17 10:20:38,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:38" (1/1) ... [2022-10-17 10:20:38,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:38" (1/1) ... [2022-10-17 10:20:38,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:38" (1/1) ... [2022-10-17 10:20:38,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:38" (1/1) ... [2022-10-17 10:20:38,195 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:38" (1/1) ... [2022-10-17 10:20:38,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:38" (1/1) ... [2022-10-17 10:20:38,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:20:38,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:20:38,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:20:38,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:20:38,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:38" (1/1) ... [2022-10-17 10:20:38,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:20:38,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9d2836-9b3a-4f92-8a59-eb5a720c2b7f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:20:38,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9d2836-9b3a-4f92-8a59-eb5a720c2b7f/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:20:38,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9d2836-9b3a-4f92-8a59-eb5a720c2b7f/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:20:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:20:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:20:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:20:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:20:38,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:20:38,322 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-10-17 10:20:38,322 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-10-17 10:20:38,322 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-10-17 10:20:38,323 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-10-17 10:20:38,324 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-10-17 10:20:38,324 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-10-17 10:20:38,324 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-10-17 10:20:38,324 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-10-17 10:20:38,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:20:38,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:20:38,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:20:38,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:20:38,327 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:20:38,582 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:20:38,584 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:20:39,320 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:20:39,828 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:20:39,828 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:20:39,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:20:39 BoogieIcfgContainer [2022-10-17 10:20:39,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:20:39,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:20:39,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:20:39,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:20:39,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:20:37" (1/3) ... [2022-10-17 10:20:39,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@529e9048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:20:39, skipping insertion in model container [2022-10-17 10:20:39,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:38" (2/3) ... [2022-10-17 10:20:39,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@529e9048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:20:39, skipping insertion in model container [2022-10-17 10:20:39,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:20:39" (3/3) ... [2022-10-17 10:20:39,842 INFO L112 eAbstractionObserver]: Analyzing ICFG mix044.opt.i [2022-10-17 10:20:39,853 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:20:39,864 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:20:39,865 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-17 10:20:39,865 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:20:39,959 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:20:40,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 137 transitions, 294 flow [2022-10-17 10:20:40,144 INFO L130 PetriNetUnfolder]: 2/133 cut-off events. [2022-10-17 10:20:40,144 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:20:40,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 133 events. 2/133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-10-17 10:20:40,151 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 137 transitions, 294 flow [2022-10-17 10:20:40,162 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 133 transitions, 278 flow [2022-10-17 10:20:40,182 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:20:40,194 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;@70c74225, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:20:40,194 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-10-17 10:20:40,237 INFO L130 PetriNetUnfolder]: 0/91 cut-off events. [2022-10-17 10:20:40,238 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:20:40,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:20:40,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:20:40,241 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:20:40,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:40,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1364924999, now seen corresponding path program 1 times [2022-10-17 10:20:40,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:40,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676593976] [2022-10-17 10:20:40,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:40,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:41,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:20:41,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:41,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676593976] [2022-10-17 10:20:41,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676593976] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:41,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:41,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:20:41,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265872876] [2022-10-17 10:20:41,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:41,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:20:41,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:41,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:20:41,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:20:41,247 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 137 [2022-10-17 10:20:41,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 133 transitions, 278 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) [2022-10-17 10:20:41,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:20:41,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 137 [2022-10-17 10:20:41,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:20:41,468 INFO L130 PetriNetUnfolder]: 17/277 cut-off events. [2022-10-17 10:20:41,468 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-10-17 10:20:41,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 277 events. 17/277 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 829 event pairs, 7 based on Foata normal form. 9/275 useless extension candidates. Maximal degree in co-relation 275. Up to 27 conditions per place. [2022-10-17 10:20:41,476 INFO L137 encePairwiseOnDemand]: 132/137 looper letters, 11 selfloop transitions, 2 changer transitions 0/132 dead transitions. [2022-10-17 10:20:41,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 132 transitions, 302 flow [2022-10-17 10:20:41,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:20:41,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:20:41,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2022-10-17 10:20:41,500 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9416058394160584 [2022-10-17 10:20:41,500 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 387 transitions. [2022-10-17 10:20:41,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 387 transitions. [2022-10-17 10:20:41,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:20:41,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 387 transitions. [2022-10-17 10:20:41,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:41,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:41,537 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:41,539 INFO L175 Difference]: Start difference. First operand has 144 places, 133 transitions, 278 flow. Second operand 3 states and 387 transitions. [2022-10-17 10:20:41,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 132 transitions, 302 flow [2022-10-17 10:20:41,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 132 transitions, 298 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 10:20:41,553 INFO L231 Difference]: Finished difference. Result has 140 places, 129 transitions, 270 flow [2022-10-17 10:20:41,590 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=140, PETRI_TRANSITIONS=129} [2022-10-17 10:20:41,594 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, -4 predicate places. [2022-10-17 10:20:41,595 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 129 transitions, 270 flow [2022-10-17 10:20:41,595 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) [2022-10-17 10:20:41,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:20:41,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:20:41,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:20:41,597 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)] === [2022-10-17 10:20:41,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:41,597 INFO L85 PathProgramCache]: Analyzing trace with hash -836884992, now seen corresponding path program 1 times [2022-10-17 10:20:41,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:41,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942412393] [2022-10-17 10:20:41,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:41,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:42,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:20:42,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:42,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942412393] [2022-10-17 10:20:42,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942412393] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:42,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:42,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:20:42,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773491347] [2022-10-17 10:20:42,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:42,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:20:42,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:42,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:20:42,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:20:42,869 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 137 [2022-10-17 10:20:42,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 129 transitions, 270 flow. Second operand has 8 states, 8 states have (on average 115.75) internal successors, (926), 8 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:42,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:20:42,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 137 [2022-10-17 10:20:42,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:20:43,509 INFO L130 PetriNetUnfolder]: 132/664 cut-off events. [2022-10-17 10:20:43,509 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-10-17 10:20:43,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 966 conditions, 664 events. 132/664 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3814 event pairs, 49 based on Foata normal form. 0/647 useless extension candidates. Maximal degree in co-relation 907. Up to 147 conditions per place. [2022-10-17 10:20:43,520 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 17 selfloop transitions, 9 changer transitions 51/174 dead transitions. [2022-10-17 10:20:43,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 174 transitions, 504 flow [2022-10-17 10:20:43,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:20:43,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-10-17 10:20:43,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1663 transitions. [2022-10-17 10:20:43,529 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8670490093847758 [2022-10-17 10:20:43,529 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1663 transitions. [2022-10-17 10:20:43,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1663 transitions. [2022-10-17 10:20:43,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:20:43,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1663 transitions. [2022-10-17 10:20:43,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 118.78571428571429) internal successors, (1663), 14 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:43,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 137.0) internal successors, (2055), 15 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:43,547 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 137.0) internal successors, (2055), 15 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:43,547 INFO L175 Difference]: Start difference. First operand has 140 places, 129 transitions, 270 flow. Second operand 14 states and 1663 transitions. [2022-10-17 10:20:43,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 174 transitions, 504 flow [2022-10-17 10:20:43,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 174 transitions, 486 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:20:43,555 INFO L231 Difference]: Finished difference. Result has 162 places, 121 transitions, 320 flow [2022-10-17 10:20:43,556 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=320, PETRI_PLACES=162, PETRI_TRANSITIONS=121} [2022-10-17 10:20:43,557 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 18 predicate places. [2022-10-17 10:20:43,557 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 121 transitions, 320 flow [2022-10-17 10:20:43,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 115.75) internal successors, (926), 8 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:43,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:20:43,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:20:43,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:20:43,559 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)] === [2022-10-17 10:20:43,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:43,560 INFO L85 PathProgramCache]: Analyzing trace with hash -945134494, now seen corresponding path program 1 times [2022-10-17 10:20:43,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:43,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773349380] [2022-10-17 10:20:43,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:43,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:44,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:20:44,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:44,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773349380] [2022-10-17 10:20:44,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773349380] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:44,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:44,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:20:44,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729683261] [2022-10-17 10:20:44,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:44,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:20:44,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:44,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:20:44,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:20:44,094 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 137 [2022-10-17 10:20:44,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 121 transitions, 320 flow. Second operand has 6 states, 6 states have (on average 117.16666666666667) internal successors, (703), 6 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:44,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:20:44,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 137 [2022-10-17 10:20:44,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:20:44,890 INFO L130 PetriNetUnfolder]: 571/1387 cut-off events. [2022-10-17 10:20:44,890 INFO L131 PetriNetUnfolder]: For 2338/2440 co-relation queries the response was YES. [2022-10-17 10:20:44,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3654 conditions, 1387 events. 571/1387 cut-off events. For 2338/2440 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 9429 event pairs, 51 based on Foata normal form. 35/1387 useless extension candidates. Maximal degree in co-relation 3583. Up to 500 conditions per place. [2022-10-17 10:20:44,916 INFO L137 encePairwiseOnDemand]: 130/137 looper letters, 44 selfloop transitions, 15 changer transitions 12/171 dead transitions. [2022-10-17 10:20:44,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 171 transitions, 723 flow [2022-10-17 10:20:44,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:20:44,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:20:44,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1100 transitions. [2022-10-17 10:20:44,921 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8921330089213301 [2022-10-17 10:20:44,921 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1100 transitions. [2022-10-17 10:20:44,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1100 transitions. [2022-10-17 10:20:44,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:20:44,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1100 transitions. [2022-10-17 10:20:44,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 122.22222222222223) internal successors, (1100), 9 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:44,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:44,933 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:44,933 INFO L175 Difference]: Start difference. First operand has 162 places, 121 transitions, 320 flow. Second operand 9 states and 1100 transitions. [2022-10-17 10:20:44,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 171 transitions, 723 flow [2022-10-17 10:20:44,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 171 transitions, 707 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-10-17 10:20:44,955 INFO L231 Difference]: Finished difference. Result has 148 places, 135 transitions, 441 flow [2022-10-17 10:20:44,955 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=441, PETRI_PLACES=148, PETRI_TRANSITIONS=135} [2022-10-17 10:20:44,958 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 4 predicate places. [2022-10-17 10:20:44,958 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 135 transitions, 441 flow [2022-10-17 10:20:44,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.16666666666667) internal successors, (703), 6 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:44,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:20:44,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:20:44,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:20:44,960 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)] === [2022-10-17 10:20:44,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:44,961 INFO L85 PathProgramCache]: Analyzing trace with hash -479633915, now seen corresponding path program 1 times [2022-10-17 10:20:44,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:44,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60000810] [2022-10-17 10:20:44,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:44,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:45,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:20:45,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:45,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60000810] [2022-10-17 10:20:45,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60000810] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:45,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:45,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:20:45,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857638252] [2022-10-17 10:20:45,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:45,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:20:45,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:45,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:20:45,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:20:45,408 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 137 [2022-10-17 10:20:45,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 135 transitions, 441 flow. Second operand has 6 states, 6 states have (on average 118.16666666666667) internal successors, (709), 6 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:45,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:20:45,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 137 [2022-10-17 10:20:45,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:20:46,165 INFO L130 PetriNetUnfolder]: 448/1246 cut-off events. [2022-10-17 10:20:46,166 INFO L131 PetriNetUnfolder]: For 2950/2993 co-relation queries the response was YES. [2022-10-17 10:20:46,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3838 conditions, 1246 events. 448/1246 cut-off events. For 2950/2993 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 8816 event pairs, 65 based on Foata normal form. 22/1224 useless extension candidates. Maximal degree in co-relation 3764. Up to 261 conditions per place. [2022-10-17 10:20:46,190 INFO L137 encePairwiseOnDemand]: 131/137 looper letters, 27 selfloop transitions, 4 changer transitions 31/171 dead transitions. [2022-10-17 10:20:46,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 171 transitions, 798 flow [2022-10-17 10:20:46,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:20:46,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:20:46,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1086 transitions. [2022-10-17 10:20:46,196 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8807785888077859 [2022-10-17 10:20:46,196 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1086 transitions. [2022-10-17 10:20:46,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1086 transitions. [2022-10-17 10:20:46,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:20:46,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1086 transitions. [2022-10-17 10:20:46,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 120.66666666666667) internal successors, (1086), 9 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:46,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:46,206 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:46,206 INFO L175 Difference]: Start difference. First operand has 148 places, 135 transitions, 441 flow. Second operand 9 states and 1086 transitions. [2022-10-17 10:20:46,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 171 transitions, 798 flow [2022-10-17 10:20:46,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 171 transitions, 790 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-10-17 10:20:46,225 INFO L231 Difference]: Finished difference. Result has 163 places, 137 transitions, 507 flow [2022-10-17 10:20:46,226 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=507, PETRI_PLACES=163, PETRI_TRANSITIONS=137} [2022-10-17 10:20:46,227 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 19 predicate places. [2022-10-17 10:20:46,228 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 137 transitions, 507 flow [2022-10-17 10:20:46,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 118.16666666666667) internal successors, (709), 6 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:46,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:20:46,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:20:46,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:20:46,229 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)] === [2022-10-17 10:20:46,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:46,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1425939940, now seen corresponding path program 1 times [2022-10-17 10:20:46,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:46,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610198778] [2022-10-17 10:20:46,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:46,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:47,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:20:47,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:47,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610198778] [2022-10-17 10:20:47,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610198778] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:47,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:47,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-10-17 10:20:47,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888606479] [2022-10-17 10:20:47,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:47,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 10:20:47,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:47,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 10:20:47,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:20:47,494 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2022-10-17 10:20:47,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 137 transitions, 507 flow. Second operand has 12 states, 12 states have (on average 113.41666666666667) internal successors, (1361), 12 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:47,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:20:47,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2022-10-17 10:20:47,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:20:48,280 INFO L130 PetriNetUnfolder]: 334/1049 cut-off events. [2022-10-17 10:20:48,280 INFO L131 PetriNetUnfolder]: For 3532/3572 co-relation queries the response was YES. [2022-10-17 10:20:48,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3386 conditions, 1049 events. 334/1049 cut-off events. For 3532/3572 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 7432 event pairs, 115 based on Foata normal form. 15/1024 useless extension candidates. Maximal degree in co-relation 3299. Up to 275 conditions per place. [2022-10-17 10:20:48,300 INFO L137 encePairwiseOnDemand]: 125/137 looper letters, 18 selfloop transitions, 11 changer transitions 48/174 dead transitions. [2022-10-17 10:20:48,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 174 transitions, 967 flow [2022-10-17 10:20:48,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:20:48,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-10-17 10:20:48,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1619 transitions. [2022-10-17 10:20:48,307 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8441084462982273 [2022-10-17 10:20:48,307 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1619 transitions. [2022-10-17 10:20:48,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1619 transitions. [2022-10-17 10:20:48,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:20:48,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1619 transitions. [2022-10-17 10:20:48,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 115.64285714285714) internal successors, (1619), 14 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:48,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 137.0) internal successors, (2055), 15 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:48,322 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 137.0) internal successors, (2055), 15 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:48,322 INFO L175 Difference]: Start difference. First operand has 163 places, 137 transitions, 507 flow. Second operand 14 states and 1619 transitions. [2022-10-17 10:20:48,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 174 transitions, 967 flow [2022-10-17 10:20:48,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 174 transitions, 883 flow, removed 41 selfloop flow, removed 8 redundant places. [2022-10-17 10:20:48,346 INFO L231 Difference]: Finished difference. Result has 170 places, 124 transitions, 415 flow [2022-10-17 10:20:48,346 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=415, PETRI_PLACES=170, PETRI_TRANSITIONS=124} [2022-10-17 10:20:48,347 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 26 predicate places. [2022-10-17 10:20:48,347 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 124 transitions, 415 flow [2022-10-17 10:20:48,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 113.41666666666667) internal successors, (1361), 12 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:48,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:20:48,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:20:48,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:20:48,349 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)] === [2022-10-17 10:20:48,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:48,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1671292741, now seen corresponding path program 1 times [2022-10-17 10:20:48,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:48,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897550318] [2022-10-17 10:20:48,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:48,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:48,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:20:48,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:48,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897550318] [2022-10-17 10:20:48,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897550318] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:48,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:48,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:20:48,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87795621] [2022-10-17 10:20:48,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:48,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:20:48,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:48,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:20:48,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:20:48,751 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2022-10-17 10:20:48,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 124 transitions, 415 flow. Second operand has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:48,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:20:48,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2022-10-17 10:20:48,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:20:50,283 INFO L130 PetriNetUnfolder]: 2174/4148 cut-off events. [2022-10-17 10:20:50,283 INFO L131 PetriNetUnfolder]: For 11974/11974 co-relation queries the response was YES. [2022-10-17 10:20:50,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11712 conditions, 4148 events. 2174/4148 cut-off events. For 11974/11974 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 31857 event pairs, 69 based on Foata normal form. 0/3894 useless extension candidates. Maximal degree in co-relation 11624. Up to 1457 conditions per place. [2022-10-17 10:20:50,372 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 80 selfloop transitions, 20 changer transitions 0/199 dead transitions. [2022-10-17 10:20:50,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 199 transitions, 988 flow [2022-10-17 10:20:50,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:20:50,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:20:50,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1204 transitions. [2022-10-17 10:20:50,378 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8788321167883212 [2022-10-17 10:20:50,379 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1204 transitions. [2022-10-17 10:20:50,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1204 transitions. [2022-10-17 10:20:50,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:20:50,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1204 transitions. [2022-10-17 10:20:50,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 120.4) internal successors, (1204), 10 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:50,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 137.0) internal successors, (1507), 11 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:50,391 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 137.0) internal successors, (1507), 11 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:50,391 INFO L175 Difference]: Start difference. First operand has 170 places, 124 transitions, 415 flow. Second operand 10 states and 1204 transitions. [2022-10-17 10:20:50,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 199 transitions, 988 flow [2022-10-17 10:20:50,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 199 transitions, 920 flow, removed 16 selfloop flow, removed 16 redundant places. [2022-10-17 10:20:50,427 INFO L231 Difference]: Finished difference. Result has 156 places, 142 transitions, 504 flow [2022-10-17 10:20:50,427 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=504, PETRI_PLACES=156, PETRI_TRANSITIONS=142} [2022-10-17 10:20:50,431 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 12 predicate places. [2022-10-17 10:20:50,431 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 142 transitions, 504 flow [2022-10-17 10:20:50,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:50,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:20:50,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:20:50,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:20:50,433 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)] === [2022-10-17 10:20:50,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:50,433 INFO L85 PathProgramCache]: Analyzing trace with hash 943193173, now seen corresponding path program 1 times [2022-10-17 10:20:50,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:50,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294732536] [2022-10-17 10:20:50,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:50,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:50,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:20:50,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:50,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294732536] [2022-10-17 10:20:50,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294732536] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:50,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:50,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:20:51,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360106020] [2022-10-17 10:20:51,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:51,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:20:51,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:51,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:20:51,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:20:51,005 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2022-10-17 10:20:51,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 142 transitions, 504 flow. Second operand has 7 states, 7 states have (on average 114.28571428571429) internal successors, (800), 7 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:51,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:20:51,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2022-10-17 10:20:51,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:20:52,605 INFO L130 PetriNetUnfolder]: 2079/4163 cut-off events. [2022-10-17 10:20:52,605 INFO L131 PetriNetUnfolder]: For 15402/15402 co-relation queries the response was YES. [2022-10-17 10:20:52,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15285 conditions, 4163 events. 2079/4163 cut-off events. For 15402/15402 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 33386 event pairs, 67 based on Foata normal form. 67/4071 useless extension candidates. Maximal degree in co-relation 15204. Up to 1300 conditions per place. [2022-10-17 10:20:52,688 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 102 selfloop transitions, 38 changer transitions 0/239 dead transitions. [2022-10-17 10:20:52,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 239 transitions, 1474 flow [2022-10-17 10:20:52,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:20:52,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:20:52,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1568 transitions. [2022-10-17 10:20:52,694 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8804042672655812 [2022-10-17 10:20:52,695 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1568 transitions. [2022-10-17 10:20:52,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1568 transitions. [2022-10-17 10:20:52,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:20:52,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1568 transitions. [2022-10-17 10:20:52,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 120.61538461538461) internal successors, (1568), 13 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:52,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:52,708 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:52,708 INFO L175 Difference]: Start difference. First operand has 156 places, 142 transitions, 504 flow. Second operand 13 states and 1568 transitions. [2022-10-17 10:20:52,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 239 transitions, 1474 flow [2022-10-17 10:20:52,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 239 transitions, 1400 flow, removed 36 selfloop flow, removed 4 redundant places. [2022-10-17 10:20:52,759 INFO L231 Difference]: Finished difference. Result has 170 places, 162 transitions, 783 flow [2022-10-17 10:20:52,759 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=783, PETRI_PLACES=170, PETRI_TRANSITIONS=162} [2022-10-17 10:20:52,760 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 26 predicate places. [2022-10-17 10:20:52,760 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 162 transitions, 783 flow [2022-10-17 10:20:52,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.28571428571429) internal successors, (800), 7 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:52,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:20:52,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:20:52,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:20:52,761 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)] === [2022-10-17 10:20:52,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:52,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1611644078, now seen corresponding path program 1 times [2022-10-17 10:20:52,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:52,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685550358] [2022-10-17 10:20:52,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:52,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:53,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:20:53,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:53,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685550358] [2022-10-17 10:20:53,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685550358] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:53,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:53,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:20:53,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479475085] [2022-10-17 10:20:53,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:53,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:20:53,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:53,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:20:53,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:20:53,237 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 137 [2022-10-17 10:20:53,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 162 transitions, 783 flow. Second operand has 6 states, 6 states have (on average 117.5) internal successors, (705), 6 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:53,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:20:53,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 137 [2022-10-17 10:20:53,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:20:54,705 INFO L130 PetriNetUnfolder]: 1090/3921 cut-off events. [2022-10-17 10:20:54,705 INFO L131 PetriNetUnfolder]: For 11768/12418 co-relation queries the response was YES. [2022-10-17 10:20:54,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13869 conditions, 3921 events. 1090/3921 cut-off events. For 11768/12418 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 40755 event pairs, 140 based on Foata normal form. 63/3795 useless extension candidates. Maximal degree in co-relation 13783. Up to 1114 conditions per place. [2022-10-17 10:20:54,792 INFO L137 encePairwiseOnDemand]: 131/137 looper letters, 46 selfloop transitions, 11 changer transitions 3/199 dead transitions. [2022-10-17 10:20:54,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 199 transitions, 1111 flow [2022-10-17 10:20:54,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:20:54,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:20:54,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1088 transitions. [2022-10-17 10:20:54,797 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8824006488240065 [2022-10-17 10:20:54,797 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1088 transitions. [2022-10-17 10:20:54,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1088 transitions. [2022-10-17 10:20:54,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:20:54,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1088 transitions. [2022-10-17 10:20:54,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 120.88888888888889) internal successors, (1088), 9 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:54,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:54,807 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:54,807 INFO L175 Difference]: Start difference. First operand has 170 places, 162 transitions, 783 flow. Second operand 9 states and 1088 transitions. [2022-10-17 10:20:54,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 199 transitions, 1111 flow [2022-10-17 10:20:54,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 199 transitions, 1008 flow, removed 42 selfloop flow, removed 4 redundant places. [2022-10-17 10:20:54,996 INFO L231 Difference]: Finished difference. Result has 181 places, 170 transitions, 779 flow [2022-10-17 10:20:54,996 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=779, PETRI_PLACES=181, PETRI_TRANSITIONS=170} [2022-10-17 10:20:54,998 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 37 predicate places. [2022-10-17 10:20:54,998 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 170 transitions, 779 flow [2022-10-17 10:20:54,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.5) internal successors, (705), 6 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:54,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:20:54,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:20:55,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:20:55,000 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)] === [2022-10-17 10:20:55,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:55,001 INFO L85 PathProgramCache]: Analyzing trace with hash 396650622, now seen corresponding path program 1 times [2022-10-17 10:20:55,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:55,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320573241] [2022-10-17 10:20:55,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:55,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:55,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:20:55,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:55,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320573241] [2022-10-17 10:20:55,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320573241] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:55,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:55,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:20:55,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135398588] [2022-10-17 10:20:55,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:55,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:20:55,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:55,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:20:55,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:20:55,405 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2022-10-17 10:20:55,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 170 transitions, 779 flow. Second operand has 8 states, 8 states have (on average 114.125) internal successors, (913), 8 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:55,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:20:55,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2022-10-17 10:20:55,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:20:57,729 INFO L130 PetriNetUnfolder]: 2999/5974 cut-off events. [2022-10-17 10:20:57,729 INFO L131 PetriNetUnfolder]: For 26882/26892 co-relation queries the response was YES. [2022-10-17 10:20:57,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24167 conditions, 5974 events. 2999/5974 cut-off events. For 26882/26892 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 51993 event pairs, 63 based on Foata normal form. 65/5755 useless extension candidates. Maximal degree in co-relation 24075. Up to 1374 conditions per place. [2022-10-17 10:20:57,811 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 58 selfloop transitions, 32 changer transitions 88/276 dead transitions. [2022-10-17 10:20:57,811 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 276 transitions, 1980 flow [2022-10-17 10:20:57,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-17 10:20:57,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-10-17 10:20:57,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1931 transitions. [2022-10-17 10:20:57,828 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8809306569343066 [2022-10-17 10:20:57,828 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1931 transitions. [2022-10-17 10:20:57,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1931 transitions. [2022-10-17 10:20:57,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:20:57,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1931 transitions. [2022-10-17 10:20:57,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 120.6875) internal successors, (1931), 16 states have internal predecessors, (1931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:57,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 137.0) internal successors, (2329), 17 states have internal predecessors, (2329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:57,849 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 137.0) internal successors, (2329), 17 states have internal predecessors, (2329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:57,849 INFO L175 Difference]: Start difference. First operand has 181 places, 170 transitions, 779 flow. Second operand 16 states and 1931 transitions. [2022-10-17 10:20:57,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 276 transitions, 1980 flow [2022-10-17 10:20:57,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 276 transitions, 1942 flow, removed 7 selfloop flow, removed 2 redundant places. [2022-10-17 10:20:57,976 INFO L231 Difference]: Finished difference. Result has 200 places, 157 transitions, 881 flow [2022-10-17 10:20:57,977 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=881, PETRI_PLACES=200, PETRI_TRANSITIONS=157} [2022-10-17 10:20:57,978 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 56 predicate places. [2022-10-17 10:20:57,978 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 157 transitions, 881 flow [2022-10-17 10:20:57,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 114.125) internal successors, (913), 8 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:57,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:20:57,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:20:57,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:20:57,979 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)] === [2022-10-17 10:20:57,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:57,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1371288252, now seen corresponding path program 1 times [2022-10-17 10:20:57,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:57,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857799888] [2022-10-17 10:20:57,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:57,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:58,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:20:58,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:58,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857799888] [2022-10-17 10:20:58,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857799888] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:58,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:58,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:20:58,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117513541] [2022-10-17 10:20:58,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:58,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:20:58,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:58,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:20:58,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:20:58,391 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 137 [2022-10-17 10:20:58,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 157 transitions, 881 flow. Second operand has 7 states, 7 states have (on average 116.42857142857143) internal successors, (815), 7 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:58,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:20:58,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 137 [2022-10-17 10:20:58,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:20:59,641 INFO L130 PetriNetUnfolder]: 811/3759 cut-off events. [2022-10-17 10:20:59,641 INFO L131 PetriNetUnfolder]: For 21182/22375 co-relation queries the response was YES. [2022-10-17 10:20:59,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14584 conditions, 3759 events. 811/3759 cut-off events. For 21182/22375 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 43369 event pairs, 9 based on Foata normal form. 16/3485 useless extension candidates. Maximal degree in co-relation 14484. Up to 1119 conditions per place. [2022-10-17 10:20:59,683 INFO L137 encePairwiseOnDemand]: 131/137 looper letters, 41 selfloop transitions, 2 changer transitions 10/190 dead transitions. [2022-10-17 10:20:59,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 190 transitions, 1200 flow [2022-10-17 10:20:59,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:20:59,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-10-17 10:20:59,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 847 transitions. [2022-10-17 10:20:59,688 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8832116788321168 [2022-10-17 10:20:59,688 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 847 transitions. [2022-10-17 10:20:59,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 847 transitions. [2022-10-17 10:20:59,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:20:59,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 847 transitions. [2022-10-17 10:20:59,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:59,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:59,697 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:59,697 INFO L175 Difference]: Start difference. First operand has 200 places, 157 transitions, 881 flow. Second operand 7 states and 847 transitions. [2022-10-17 10:20:59,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 190 transitions, 1200 flow [2022-10-17 10:21:00,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 190 transitions, 968 flow, removed 101 selfloop flow, removed 15 redundant places. [2022-10-17 10:21:00,374 INFO L231 Difference]: Finished difference. Result has 184 places, 158 transitions, 700 flow [2022-10-17 10:21:00,375 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=700, PETRI_PLACES=184, PETRI_TRANSITIONS=158} [2022-10-17 10:21:00,376 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 40 predicate places. [2022-10-17 10:21:00,376 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 158 transitions, 700 flow [2022-10-17 10:21:00,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 116.42857142857143) internal successors, (815), 7 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:00,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:21:00,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:00,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-17 10:21:00,377 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)] === [2022-10-17 10:21:00,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:00,378 INFO L85 PathProgramCache]: Analyzing trace with hash 674731038, now seen corresponding path program 2 times [2022-10-17 10:21:00,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:00,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940768199] [2022-10-17 10:21:00,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:00,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:00,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:21:00,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:00,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940768199] [2022-10-17 10:21:00,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940768199] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:00,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:21:00,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:21:00,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693455878] [2022-10-17 10:21:00,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:00,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:21:00,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:00,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:21:00,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:21:00,774 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2022-10-17 10:21:00,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 158 transitions, 700 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) [2022-10-17 10:21:00,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:21:00,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2022-10-17 10:21:00,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:21:02,830 INFO L130 PetriNetUnfolder]: 2568/6888 cut-off events. [2022-10-17 10:21:02,831 INFO L131 PetriNetUnfolder]: For 16611/17495 co-relation queries the response was YES. [2022-10-17 10:21:02,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22725 conditions, 6888 events. 2568/6888 cut-off events. For 16611/17495 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 74575 event pairs, 17 based on Foata normal form. 127/6679 useless extension candidates. Maximal degree in co-relation 22686. Up to 751 conditions per place. [2022-10-17 10:21:02,936 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 52 selfloop transitions, 37 changer transitions 41/229 dead transitions. [2022-10-17 10:21:02,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 229 transitions, 1435 flow [2022-10-17 10:21:02,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-17 10:21:02,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-10-17 10:21:02,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2010 transitions. [2022-10-17 10:21:02,970 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.863031343924431 [2022-10-17 10:21:02,971 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2010 transitions. [2022-10-17 10:21:02,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2010 transitions. [2022-10-17 10:21:02,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:21:02,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2010 transitions. [2022-10-17 10:21:02,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 118.23529411764706) internal successors, (2010), 17 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:02,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 137.0) internal successors, (2466), 18 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:02,992 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 137.0) internal successors, (2466), 18 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:02,992 INFO L175 Difference]: Start difference. First operand has 184 places, 158 transitions, 700 flow. Second operand 17 states and 2010 transitions. [2022-10-17 10:21:02,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 229 transitions, 1435 flow [2022-10-17 10:21:03,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 229 transitions, 1340 flow, removed 46 selfloop flow, removed 9 redundant places. [2022-10-17 10:21:03,254 INFO L231 Difference]: Finished difference. Result has 195 places, 158 transitions, 763 flow [2022-10-17 10:21:03,255 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=763, PETRI_PLACES=195, PETRI_TRANSITIONS=158} [2022-10-17 10:21:03,256 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 51 predicate places. [2022-10-17 10:21:03,256 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 158 transitions, 763 flow [2022-10-17 10:21:03,257 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) [2022-10-17 10:21:03,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:21:03,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:03,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-17 10:21:03,258 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)] === [2022-10-17 10:21:03,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:03,259 INFO L85 PathProgramCache]: Analyzing trace with hash -2082214490, now seen corresponding path program 1 times [2022-10-17 10:21:03,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:03,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437813207] [2022-10-17 10:21:03,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:03,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:03,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:21:03,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:03,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437813207] [2022-10-17 10:21:03,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437813207] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:03,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:21:03,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:21:03,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22488589] [2022-10-17 10:21:03,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:03,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:21:03,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:03,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:21:03,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:21:03,744 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 137 [2022-10-17 10:21:03,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 158 transitions, 763 flow. Second operand has 7 states, 7 states have (on average 116.57142857142857) internal successors, (816), 7 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:03,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:21:03,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 137 [2022-10-17 10:21:03,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand